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1. Reset TN Initial settings Save settingiem factory settings Front panel key RST Recall Backup SYST PRES Data transfer Binary ASCII ASCii 1 oo format Binary Data Byte order NORmal 1 oo ASCII Long format OFF 1 oo Feeding target parameter oo oo i Control feed not feed NEVer oo oo Data buffer BUFIIBUF2 200 oo oo Buffer size BUF3 1000 oo oo ON OFF OFF 1 oo Limit range reset No effect oo oo Limit range Primary parameter ON 1 oo ON OFF Secondary parameter ON 1 oo Primary limit range setup 0 1 oo Secondary limit range setup 0 1 oo Limit range Primary Limit range f designation method mode ABS 1 oo setting a selection Primary Reference nominal 0 1 value Comparator AUX BIN ON OFF OFF 1 oo ON OFF OFF 1 oo Low C reject Limit value 096 1 oo ON OFF OFF 1 oo Reset Count value No effect oo oo Readout of Count value 0 oo oo Readout of Count value at BIN count overload d I M Readout of Count value for 0 co oo each channel Readout of Count valueon oo oo overload per channel ON OFF ON 1 oo Current Vind i onitor value monitor T oo oo Measurement Signal readout AMICO 7 Monitor ON OFF ON 1 oo Voltage Monitor value monitor No effect oo e readout ON OFF ON 1 oo i
2. 1 0E 8 1 0E 7 1 0E 6 1 0E 5 Measurement Value Cp Cs F 1 0E 4 1 0E 3 Chapter 10 Specifications and Supplemental Information Basic Specifications Figure 10 2 Accuracy of Cp and Cs when measurement frequency is 120 Hz measurement range 10 nF to 100 uF measurement signal level 0 5V te B amp B ui o a e I o S 3 o o lt 1 0E 7 1 0E 6 Measurement Value Cp Cs e4981cue0026 pue suomneoyioeds 01 CD en Ke e o E o 2 v 3 e 3 c E e 2 Chapter 10 189 Specifications and Supplemental Information Basic Specifications Figure 10 3 Accuracy of D when measurement frequency is 120 Hz measurement range 220 uF to 1 mF measurement signal level 1V 0 001 Measurement Value Cp Cs F e4981cue0029 190 Chapter 10 Specifications and Supplemental Information Basic Specifications Figure 10 4 Accuracy of Cp and Cs when measurement frequency is 120 Hz measurement range 220 uF to 1 mF measurement signal level 1V Accuracy of Cp and Cs w
3. Step 1 Step 2 Step 3 Step 4 NOTE NOTE NOTE Step 1 Step 2 Step 3 Step 4 NOTE Preparation for Accurate Measurement Executing Correction Turning ON OFF Correction Functions Setting up ON OFF directly Use the following procedure to set the SHORT correction to ON OFF Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the SHORT field Press the ON softkey to turn ON the SHORT correction function If you change the setup of the cable length or frequency shift 1 MHz with the SHORT correction ON the warning message Need corr meas appears and the SHORT correction is automatically set to OFF Along with SHORT correction OPEN and LOAD correction is set to OFF as well If you set the SHORT correction to ON using the above procedure when the setup of the cable length or frequency shift differs from that during measurement of the data for SHORT correction the warning message Need short meas appears Even if this warning message appears the SHORT correction is set to ON However you must again measure the data for SHORT correction to ensure accurate measurement When the measurement result becomes overload Measurement failed error is displayed and SHORT correction data is not updated Turning ON LOAD correction Use one of the following two ways to set the LOAD correction to ON Measuring LOAD correction data Execute measurement of the data for the LOAD
4. Table 8 2 Description of the handler interface input output signals Pin Signal name Input output Description number 8 P P E 1 BINI Sorting judgment signals A BIN signal of the sorting 2 BIN2 result one of pin numbers 1 11 becomes LOW These signals do not become LOW if measurement is not 3 BIN3 possible overload 4 BIN4 5 BINS 6 BIN6 Output 7 BIN7 8 BIN8 9 BIN9 10 OUT_OF_BINS 11 AUX_BIN External trigger signal This is active when the trigger mode is set to the external trigger Ext The trigger is 12 13 EXT_TRIG Input generated at the rising edge of a pulse When this trigger pin is not used the pin should be connected with GND LO 152 Chapter 8 Table 8 2 Using Handler Interface Input Output Signal Pin Assignment Description of the handler interface input output signals Pin number Signal name Input output Description 14 15 EXT DCV2 Input External dc voltage This supplies the voltage to the input signals EXT TRIG and KEY LOCK and the operation output signals ALARM INDEX EOM and READY FOR TRIOG The input voltage range is between 5V and 24V 16 17 18 45V 19 PHI 20 PLO 21 SREJ 22 READY_FOR_TRIG 23 LOWC_OR_NC 24 OVLD Output Internal dc voltage Primary parameter upper limit exceeded signal When the upper limit of BIN1 BINO is exceeded this becomes LOW Primary p
5. Chapter 3 49 Getting Started Learning Basic Measurement Procedure Setting up cable length Select the length of the measurement cable from 0 m m or 2 m depending on the test set lead you use 0m When you do not use the test lead in other words when you connect the test fixture directly to the UNKNOWN terminal lm When you use the Keysight 16048A B test lead 2m When you use the Keysight 16048D test lead The procedure used to set up the length of the measurement cable is described below Step 1 Press Meas Setup key Step 2 Press the CORRECTION softkey Step 3 Use the cursor keys to select the CABLE field Step 4 Use the following softkeys Softkey Description Om Sets the cable length to 0 meter 1m Sets the cable length to 1 meter 2m Sets the cable length to 2 meter Figure 3 7 Cable length selection menu screen CORRECTION OPEN OFF CABLE m SHORT OFF MULTI OFF LOAD OFF LOAD REF SINGLE OFFSET OFF LOAD RNG AUTO CH B OPEN G B SHORT R X LOAD Cp D REF OFFSET BF Use softkeus to select e4981auj0008 50 Chapter 3 Step 1 Step 2 Getting Started Learning Basic Measurement Procedure Executing measurement to compensate errors You can compensate for errors in the measurement caused by disturbances such as stray admittance and residual impedance of the test fixture and cable Corrections should be performed before actually connecting the DUT to the test fixture Meas
6. 5 NOTE Step 1 Step 2 Step 3 Step 4 Using Scanner Interface Using Multi correction Function Using Multi correction Function The E4981A provides a function that lets you select a data set from up to 256 correction data sets measured and stored in advance and use it multi correction function This function performs OPEN SHORT LOAD correction for each channel of the scanner to cancel variations in measured values caused by a different measurement path for each channel Consequently the function can provide highly reliable measurement This section describes how to use the multi correction function Turning ON OFF multi correction function When you turn ON the multi correction function the correction data for each channel which has been measured in advance according to the procedure described in Measuring multi correction data is used to perform error correction The ON OFF state of the multi correction function is dependent on the ON OFF state of the scanner interface When the multi correction function is OFF the channel number inputs CHO CH7 and CH VALID from the scanner interface are ignored and INDEX and EOM stay LOW Regardless of the ON OFF state of the multi correction function EXT TRIG is valid when the trigger mode is set to the external trigger EXT The procedure to turn ON OFF the multi correction function is given below Press Meas Setup Press CORRECTION softkey Use the cursor keys t
7. Inputting an external trigger signal through the Ext Trig External trigger EXT terminal handler interface or scanner interface generates a trigger BUS trigger BUS The E4981A performs one cycle of measurement each time it receives a trigger command sent via GPIB LAN USB E49814A ignores any trigger that is input during the measurement cycle Be sure to trigger the instrument when it is not in a measurement cycle Setting the trigger mode Press Meas Setup Use the cursor keys to select the TRIG field Select the desired trigger mode by pressing the appropriate softkey Softkey Function INT Puts the instrument into internal trigger INT mode MAN Puts the instrument into manual trigger MAN mode EXT Puts the instrument into external trigger EXT mode BUS Puts the instrument into bus trigger GPIB USB LAN mode 126 Chapter 6 Executing Measurement Starting triggering Measurement Perform successive measurements automatically Select the internal trigger mode according to the procedure in Setting the trigger mode In this mode measurements are automatically repeated triggered by the internal trigger signal D m x D e en rt a D e n en o D 2 Specifying measurement timing Generating a trigger manually Step 1 Select manual trigger mode according to the procedure in Setting the trigger mode Step 2 Press Display Format key Step 3 Press Trigger
8. Measurement value Recommended measurement range Significant measurement range 100 pF 0 F 150 pF 0 F 150 pF 220 pF 150 pF 330 pF 0 F 330 pF 470 pF 330 pF 680 pF 0 F 680 pF 1 nF 680 pF 1 5 nF 0 F 1 5 nF 2 2 nF 1 5 nF 3 3 nF 0 F 3 3 nF 4 7 nF 3 3 nF 6 8 nF 0 F 6 8 nF 10 nF 6 8 nF 15 nF 0 F 15 nF 22 nF 15 nF 33 nF 0 F 33 nF 47 nF 33 nF 68 nF 0 F 68 nF 100 nF 68 nF 150 nF 0 F 150 nF 220 nF 150 nF 330 nF 0 F 330 nF 470 nF 330 nF 680 nF 0 F 680 nF 1 uF 680 nF 1 5 uF 0 F 1 5 uF 2 2 UF 1 5 uF 3 3 WF 0 F 3 3 UF 4 7 uF 3 3 UF 6 8 WF 0 F 6 8 uF 10 uF 6 8 uF 15 uF 0 F 15 uF 22 UF 15 uF 33 uF 0 F 33 uF 47 uF 33 uF 68 uF 0 F 68 uF 100 uF 68 uF 200 uF 0 F 200 uF Measurable capacitance ranges when measurement frequency is 1 MHz 1 MHz 1 1 MHz 2 Measurement value Recommended measurement range Significant measurement range 1 pF 0 F 1 5 pF 0 F 1 5 pF 2 2 pF 1 5 pF 3 3 pF 0 F 3 3 pF 4 7 pF 3 3 pF 6 8 pF 0 F 6 8 pF 10 pF 6 8 pF 15 pF 0 F 15 pF 22 pF 15 pF 33 pF 0 F 33 pF 47 pF 33 pF 68 pF 0 F 68 pF 100 pF 68 pF 150 pF 0 F 150 pF 220 pF 150 pF 330 pF 0 F 330 pF 470 pF 330 pF 680 pF 0 F 680 pF 1 nF 680 pF 1 5 nF 0 F 1 5 nF 182 Chapter 10 Specifications and Supplemental Information Basic Specifications Measurement accuracy The measurement accuracy is defined when all of the following conditions are met Warm up time 30 minutes or longer Ambient temperature 18 C 28 C
9. is displayed in the system message area If this happens refer to Check Items When Trouble Occurs on page 220 Executing the self test from the front panel The self test of the E4981A can be executed from the front panel The steps are given below Self test procedure Step 1 Press System key Step 2 Press the SELF TEST softkey Step 3 Use the cursor key to select the right of TEST No 1 in Figure 11 2 Step 4 Select the number corresponding to the test that you want to perform by using the INCR and DECR softkeys Step 5 Press the EXECUTE softkey 2 in Figure 11 2 Step 6 Press the TEST START softkey 2 in Figure 11 2 to execute the selected test item Figure 11 2 Self test screen and procedure SELF TEST 6 HANDLER INTERFACE SCANNER INTERFACE TEST STOP INCR TEST Mo 1 SYSTEM In 2 USER DATA 3 BATTERY 4 KEY 5 DISPLAY y SN TE Enter test number or select e4981auj0002 The following test items can be checked by using the self test Chapter 11 215 NOTE Precautions for Use and Daily Checks Daily Checks Executing the self test Self test items 1 SYSTEM 2 USER DATA 3 BATTERY 4 KEY 5 DISPLAY 6 HANDLER INTERFACE 7 SCANNER INTERFACE Checks the system A1 A2 A3 boards and system correction data Checks the settings of GPIB and LAN instrument setup information correction data and scanner s correction data Checks the internal batt
10. jen O o 9 z 2 Q 2 on U D o RV o imd ie 2 Unpacking and Preparation This chapter describes how to set up and start the Keysight E4981A Capacitance Meter 17 Unpacking and Preparation Contents of this Chapter o Checking the Shipment on page 19 After you receive the E4981A check all the items in the packing container o Environmental Requirements on page 20 Describes the system requirements needed to install the E4981A and how to secure space for heat radiation o How to Remove the Handle on page 23 Shows how to attach and remove the handle o Preparations before Use on page 25 Shows how to check the power supply as well as check and connect the power cable This section also describes how to deal with a blown fuse o Starting the E4981A on page 27 Describes how to turn on off the power switch and cut off the power supply 18 Chapter 1 WARNING Step 1 NOTE Step 2 Step 3 Step 4 Unpacking and Preparation Checking the Shipment Checking the Shipment After you receive the E4981A carry out checks during unpacking according to the following procedure ENS jen O o Q z 2 Q o 2 on U x D O o 0 a o 2 If the external face of the Capacitance meter such as the cover front rear panel LCD screen power switch and port connectors appears to have been damaged during transport do not turn on the power switch
11. lseleeeeeeeeeee eee ee 143 Setting up limit boundary value of Low C reject function 00 eese 143 Reading out Sorting Judgment Result lleeeeeeeeeeeeeee eens 145 Reading out Sort Count of Each BIN BIN count function 0 0 00 eee eee eee ee 147 setup procedure ssi es Re RE ath e Robs GSU ate D E EE Rc e dap Re ce e Ra 147 Making a Beep based on Sorting Judgment Result llle 148 8 Using Handler Interface Output of Comparator Sorting Result liess 150 12 Contents Input Output Signal Pin Assignment 0 0 0 2 ee II eens 152 Timing CHALE RC 154 Electrical Characteristics i ise wkend ob gud Re pe CR RH RC pd Ren Red Belgie Ecc R 156 Output signals e repe ett teer e LER Lode P weh e eee ed bee Re reet 156 Input signal ken ema ab eased GA se a Sheela She SS o hk bab gael Cb E edd uals Rappel tins 159 Control Check the Handler Interface for Maintenance eee 161 Starting Handler Interface Test l lllleseeeeeeeeeeeeee eee 161 Using Handler Interface Test Commands 0 0 0 cee cee een eee 161 Ending Handler Interface Test cooo occse 0 m 161 9 Using Scanner Interface Using Multi correction Function 0 0 0 cette een ene eee 164 Turning ON OFF multi correction function lille ee 164 selecting a channela 2 urb pb RR VIPATIU RAND ETUR ALE a A o RASA 165 Measuring multi correction data llsseleeeeeeee eens 166
12. 470 nF 1 uF 2 2 uF 4 7 UF 10 uF 0 055 0 030 K 0 055 0 022 K 0 055 0 018 K 0 055 0 016 K 0 055 0 015 K 22 uF 47 uF 100 uF 0 4 0 060 K 0 4 0 044 ee K 0 4 0 036 K 0 4 0 032 K 0 4 0 030 K 186 Chapter 10 Table 10 11 Specifications and Supplemental Information Basic Specifications Measurement accuracy of D measurement frequency 1 kHz D MEAS TIME N 100 pF 0 00035 0 00070 eK 0 00035 0 00047 K 0 00035 0 00036 K 0 00035 0 00033 K 0 00035 0 00030 K 220 pF 0 00035 0 00045 K 0 00035 0 00032 K 0 00035 0 00025 K 0 00035 0 00022 K 0 00035 0 00020 K 470 pF l nF 2 2 nF 4 7 nF 10 nF 22 nF 47 nF 100 nF 220 nF 470 nF 1 uF 2 2 uF 4 7 UF 10 uF 0 00035 0 00030 K 0 00035 0 00022 K 0 00035 0 00018 K 0 00035 0 00016 K 0 00035 0 00015 K 22 uF 47 uF 100 uF 0 004 0 00060 co K 0 004 0 00044 co K 0 004 0 00036 co K 0 004 0 00032 co K 0 004 0 00030 e K Table 10 12 Measurement accuracy of Cp Cs measurement frequency 1 MHz 1 MHz 1 1 MHz 2 Cp Cs MEAS TIME N 1 pF 0 055 0 070 ee K 0 055 0
13. Enter the IP address using the entry keys Example 192 168 1 101 Press the ENTER softkey Use the cursor keys to select the MANUAL SUBNET MASK field Enter the subnet mask using the entry keys Press the ENTER softkey Use the cursor keys to select the MANUAL GATEWAY field Enter the gateway using the entry keys Press the ENTER softkey Press the RESTART NETWORK softkey Checking the LAN connection status You can check the CURRENT LAN STATUS monitor area to see the LAN connection status of the E4981A The status is expressed as one of the following LAN connection status Status Description NORMAL LAN connection is OK FAILED Disconnected from the LAN or LAN connection has failed IDENTIFY LAN connection is being initialized To reconnect to the network Press System Press SYSTEM CONFIG softkey Press the RESTART NETWORK softkey on the IP CONFIG field MANUAL IP ADDR field MANUAL SUBNET MASK field or MANUAL GATEWAY field Chapter 4 87 B On D o 25 zo e es Qo v 30 Qa og m Lo Bg lt 5 re NOTE Table 4 8 NOTE Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Saving Recalling Instrument Setup State save recall function You can save recall up to 20 instrument setup states into from the built in FLASH memory 0 through 9 and external USB memory 10 through 19 The ninth
14. For the input method in the comment line refer to Inputting Comment line on page 61 3 Softkey Area Displays softkey labels corresponding to the field A gt displayed to the right of a softkey indicates that pressing that softkey will display the softkey label one level lower Pressing the Return key when the lower level softkey label is displayed will display the softkey label one level higher In this case a lt is displayed on the label to the left of the Return key Chapter 2 37 Overview Screen Area Names and Functions of Parts Figure 2 4 Softkey Area Return e4981aue0018 4 Measurement Data Conditions Area Displays measurement conditions and measurement results 5 Input Line Area Displays numeric values entered with the entry key 6 System Message Area Displays a system message warning and an error message 7 Status Display Area Return When the front panel key is locked LOCK is displayed in this area When sending SCPI commands from an external controller RMT is displayed and the front panel keys are locked When E4981A accesses the USB memory USB is displayed in this area 38 Chapter 2 Overview Basic Operation e aa Basic Operation The E4981 A s basic operations are described below 1 Display the desired page using both the MENU keys and softkeys 2 Move the cursor to the desired field using the cursor keys Whe
15. Preparation for Accurate Measurement Executing Correction Obtaining correction Data Setting up Data for OFFSET correction You can define a certain value and set it up as the data for OFFSET correction When the OFFSET correction is ON taking the measured value before correction as Meas and the data for the OFFSET correction as Offset the measured value is corrected as Meas Offset Therefore to correct the measurement result to your desired value set up the difference between the desired value and the measurement result as the data for the OFFSET correction For example to correct the current measured value of the primary parameter of 1 012 nF to the measured value of 1 000 nF set up the data for the OFFSET correction for the primary parameter to 12 pF The data for the OFFSET correction consists of 120 Hz 1 kHz and 1 MHz data for both the primary and secondary parameters as shown in Table 5 2 Structure of data for OFFSET correction For primary parameter For secondary parameter 120 Hz correction data 120 Hz correction data 1 kHz correction data 1 kHz correction data 1 MHz correction data 1 MHz correction data Setup procedure Press Meas Setup Press CORRECTION softkey Use the cursor keys to select OFFSET field Use the following softkeys Softkey Function ON Turns ON the OFFSET correction function OFF Turns OFF the OFFSET correction function Use the cursor keys to select the OFFSET
16. Step 1 Step 2 Step 3 NOTE Setting up Measurement Conditions and Display Setting Up Display Setting Up Display Turning ON OFF display You can turn ON OFF the display with the Display Format key If you turn OFF the display DISPLAY NORMAL is always displayed in the display area for the above items and you cannot read the measurement result However the measurement time is shortened because no additional time is required for updating the display Setup procedure Press Display Format Press DISPLAY BLANK softkey If you turn OFF the display DISPLAY NORMAL is always displayed in the display area To return to normal display press the DISPLAY NORMAL softkey Using fixed point display for measurement result The following two display modes can be used to display the measurement result of the measurement parameter Description Floating point display The value displayed at each digit is not fixed and changes depending on the default setup measured value Fixed point display The value displayed at each digit is fixed to the value defined by the user The fixed point display is always used to display the deviation percentage refer to Displaying measurement result in deviation from reference value deviation measurement mode as well as to display D and Q Chapter 4 73 B On D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 Step 1 Step 2 Step 3
17. Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Setting up Measurement Conditions and Display Setting up Contact Check Setting up Contact Check The E4981A contact check function can be used to check for contact failure between the E4981A connector and the DUT When contact failure is detected N C will appear on the display and a fixed value 9 9E37 is always read out via GPIB LAN USB as the measurement value and the LOWC_OR_NC signal of the handler interface goes Low The contact check function is available only at 120 Hz and 1 kHz measurement frequency This function does not works when range is set as AUTO Setup procedure Press Meas Setup Press CONT CHECK softkey Use the cursor keys to select the CONT CHK1 field Use the following softkeys Softkey Description ON Turns ON the contact check function to detect loose connection OFF Turns OFF the contact check function Use the cursor keys to select CC1 TH1 field TH1 is a parameter proportional to the contact resistance of Hp or Hc Use the recommended setting value 0 1 default value for CC1 TH1 Recommended setting value for TH1 and TH2 Range THI TH2 120 Hz 1 kHz 10 nF 100 pF 1 nF 0 08 22 nF 100 nF 2 2 nF 10 nF 0 08 220 nF 1 uF 22 nF 100 nF 0 1 0 08 2 2 UF 10 uF 220 nF 1 uF 0 1 22 uF 100 uF 2 2 UF 10 uF 0 15 220 uF 1 mF 22 uF 100 UF NA Default valu
18. Step 3 Use the numeric keys or following softkeys Softkey ON OFF INCR DECR 68 Description Turns ON the averaging feature Turns OFF the averaging feature Increments the averaging factor in steps of 1 Decrements the averaging factor in steps of 1 Chapter 4 Setting up Measurement Conditions and Display Setting Up Trigger Delay Time Setting Up Trigger Delay Time You can set up a wait time trigger delay time between when a trigger is detected and when the measurement is started You can set up the trigger delay time within the range of Osto 1 sin steps of 100 us Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor keys to select the TRIG DLY field Step 3 Use the numeric keys or following softkeys Softkey Description INCR Increments the trigger delay time in steps of 1 msec INCR Increments the trigger delay time in steps of 0 1 msec DECR Decrements the trigger delay time in steps of 0 1 msec DECR Decrements the trigger delay time in steps of 1 msec NOTE When source delay is available trigger delay executes after source delay time B OW o Bro Sa 25 a e c 3 no v z 2 0 Qa o og m o9 bg 5 E Chapter 4 69 Step 1 Step 2 Step 3 Step 4 Step 5 NOTE Setting up Measurement Conditions and Display Outputting the Measurement Signal only during the Measurement to Protect the Contact Pin Synchronous source function Output
19. e m 3 D m ie 2 Chapter 10 205 Specifications and Supplemental Information General Specifications General Specifications Power source Voltage 90 VAC to 264 VAC Frequency 47 Hz to 63 Hz Power consumption Max 150 VA Operating environment Temperature 0 C to 45 C Humidity lt 40 C no condensation 15 to 85 RH Altitude 0 m to 2000 m Storage environment Temperature 20 C to 70 C Humidity lt 65 C no condensation 0 to 90 RH Altitude 0 m to 4572 m Weight 4 3 kg nominal Display LCD 320 240 pixels RGB color Outer dimensions 370 width 105 height 405 depth mm nominal 206 Chapter 10 Specifications and Supplemental Information General Specifications Figure 10 13 Dimensions front view with handle and bumper in millimeters nominal SX Agilent E4981A e4981aue0007 Figure 10 14 Dimensions front view without handle and bumper in millimeters nominal UNKNOWN e4981aue0001 pue suomneoyioeds 0L 09 les Ke o oO E oO 5 p v 53 ZA 9 3 D 9 5 Chapter 10 207 Specifications and Supplemental Information General Specifications
20. e When the measurement has finished the OPEN measurement in progress message disappears e During the measurement the ABORT softkey is shown Use this key when you want to abort open correction Remove the OPEN termination and connect LOAD standard 16383A 100pF or 42037A 1k 2 to the end terminal of the cable Press the MEAS LOAD softkey The data for the LOAD correction is then measured e During the measurement the LOAD measurement in progress message is shown on the display When the measurement has finished the LOAD measurement in progress message disappears e During the measurement the ABORT softkey is shown Use this key when you want to abort load correction Press the SAVE softkey when the measurement of reference open and load is successfully 122 Chapter 5 NOTE NOTE Preparation for Accurate Measurement Executing Correction Obtaining cable correction data completed to turn ON the correction function When measurement is executed the correction function including OFFSET correction turns OFF automatically If cable correction is ON when the measurement is being executed it turns OFF automatically Description of softkeys To enable disable the cable correction function use the following softkeys Softkey Function MEAS REF Measures the cable correction reference value MEAS OPEN Measures the cable correction open value MEAS LOAD Measures the cable correction load
21. gt P o a Oo a gt o G i 3 o o lt 0 1 0E 13 1 0E 12 1 0E 11 1 0E 10 1 0E 9 1 0E 8 Measurement Value Cp Cs F e4981cue0034 196 Chapter 10 Specifications and Supplemental Information Basic Specifications Figure 10 10 Accuracy of D when measurement frequency is 1 MHz measurement signal level 1V a gt o G x 5 o o lt 1 0E 12 1 0E 11 1 0E 10 1 0E 9 1 0E 8 Measurement Value Cp Cs F e4981cue0035 pue suomneoyioeds 01 c5 en Ke O D 3 D 2 m 3 je y D E je 2 Chapter 10 197 Specifications and Supplemental Information Supplemental Information Supplemental Information Table 10 14 Measurement Signal Source Output Impedance Output Impedance Frequency 120 Hz SLC OFF gt 220 UF range 1 5 Q nom SLC ON gt 220 uF range 0 3 Q nom 2 2 uF 100 uF range 0 3 Q nom 10 nF 1 pF range 20 Q nom Frequency 1 kHz SLC OFF gt 22 uF range 1 5 Q nom SLC ON gt 22 UF range 0 5 Q nom 220 nF 10 uF range 0 3 Q nom 100 pF 1
22. A 57 4 Setting up Measurement Conditions and Display Selecting Measurement Parameters 0 0 0 ee e 60 Setup procedure 24 cu 2Gh cecal hae M ave beet E Meee ete puede e ug aut DOE ERR UEM tens 60 Inputting Comment lime sois pu obese he Soe RR ES EUS TN UR Ee ERI S ees 61 To enter a comment into the comment line 0 0 ee e 61 Setting Up Measurement Signals frequency and level 0 00 cee cece eee eee 62 Setting up frequency 455 Abe toU USRE PUES VUA LESAGE es hae bes 62 setting up level ese eL VR es At ERES E RIGG EEG SEARS FEELERS URBE TEES 62 Setting up Signal level compensation SLC function 2 2 0 00 eee eee 63 Selecting Measurement Range eri c ERA aA EEEE EEEE REDEE RERE I A E Rd EY 64 Setting measurement range to be automatically selected auto ranging 0 00000 64 Selecting Measurement Time eue me eee bee eRe ERE REF Se EMRE REMUS 66 Setup procedures aussi RIS RI ERES RIE CEDE EE ha aie Utne geet etree Od gees 66 selecting Cable Lenpth z 2s gebe IRR REORPRU HOA RIS du aoe gee SHE PEERS UE DAT 67 Setup Procedure Loa EP PER ERE nei dda UH A OHNE DUREE M es 67 Setting Up Averagimg Count exces der OBERQEWENERRRNEN ER NT VERG TEX RES 68 Functional Description 3 b de cite Raby ds RECIPE LODS eI CnEUUENEN EUN RE DU es 68 Setup procedure ick eos Seeker ede REED RHRRERSE SE DEST REESE GEES Ree Rae MOE TREES E PRU 68 Setting Up Trigger Delay Time 0 0 ence e ene n ene
23. Cleaning Parts Other than Unknown Terminals To remove stains on parts other than the unknown terminals wipe them gently with a soft cloth that is dry or one that is wetted with a small amount of water and wrung tightly Chapter 11 217 Precautions for Use and Daily Checks Cautions Applicable to Requesting Repair Replacement Regular Calibration etc Cautions Applicable to Requesting Repair Replacement Regular Calibration etc Caution when Sending the Unit If it is necessary to send the unit to a Service Center of Keysight Technologies please follow the instructions below Equipment to be Sent When requesting repair or regular calibration of the unit at our Service Center send only the E4981A main unit without any installed option Unless specifically instructed it is not necessary to send accessories Packing Use the original package and shock absorbers or equivalent antistatic packing materials when sending the unit Shipping Address For the address of the nearest Keysight Technologies Service Center direct inquiries to the Customer Contact shown at the end of this manual Recommended Calibration Period The recommended interval between calibrations of this instrument is one year Keysight recommendis that you request our Service Center to perform regular calibration every year 218 Chapter 11 a x je en o D n 2 Q e A 2 Q 12 Troubleshooting This chapter lists ite
24. Input Output Signal Pin Assignment 0 0 0 2 ee II 168 Tinung Chait no s 0 3s anc ee RAS beet Mae He eee R ee ERR AEQ ERSEAW E IU ROSE Ee ER 170 Blectrical Characteristics 222 our Sete bbe RSE AULLEUCURL SURE beeen tba EU CHA PA 171 Output signal sa Son p EE ee ARES by BERGEN ee ee ete qu rise eed ee ee 171 Input sienal 5 42 9e tea Peake be bebe heehee daa SUA e Uere eee dene es 172 POWerSOULCE sels dan de te nb Ghee hy ne bk EOP ORE SE Ee ED UE Gu ee Oe PEE ee ee S 175 Control Check the Scanner Interface for Maintenance lisse 176 Starting Scanner Interface Testi cssul tss pa ver et RR ER bu E SPREE SPREE ROE S 176 Using Scanner Interface Test Commands 0 0 0 ec eee nee 176 Ending Scanner Interface Test sek oped bois Panes ESET Yu P REROPAXAG PARESE OTTA ES 176 10 Specifications and Supplemental Information Ib asini 23 spice PEU 178 Option Dependencies usse eR EU LREE e UNE HUS UR REESE PEL ENDE RE EE 178 Basic Specifications oeir eec vr toe dep hte eres Reo Op t sed aep ot cd deat 179 Measurement parameters c ecssreer eR trodro EEOAE WERE AU EENATEESSCEEOCSRERESREPEXG ER 179 Measurement sipnalsz Li igciviwiiecubrengiieeetiaeiihe te bide bbe detec ed Seb eiissa 179 Measurement cable lengths spise sesso RR ep ns urhe RR REIR REY OPA HR AS RARE 180 Measurement time selection 2 2 erenn as ENEE ERORE eect eee eee eae 180 Measurement range selection 2 s esae t RR REV RE ES ESP PORES EMS SEEN RE RES
25. ON OFF OFF 1 oo Fixed point MoT of the highest digit displa alue of the highest digi play Msd 1 nF 1 Primary ON OFF OFF l oo Deviation parameter Mode DEV 1 oo Display measurement Secondary ON OFF OFF 1 oo mode parameter Mode DEV 1 EE Reference value 0 1 oo Page number of instrument setup display area MEAS 1 oo Input the comment line s 1 oo Output the displayed image to controller No effect oo oo Contact Check ON OFF OFF 1 oo 236 Appendix C Initial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up Table C 1 Initial settings settings that can be saved recalled settings that can be backed up Reset m Initial settings Save Setting items factory settings Front panel key RST Recall Backup SYST PRES Key lock ON OFF OFF oo oo ON OFF ON 1 oo Beeper Mode 3 No effect oo i Comparator Beeper condition FAIL 1 oo Clear No effect oo oo Status Byte register value d No effect P readout Service request enable register No effect 2 y value Register No effect oo eo Standard reading event status OPC ON No effect oo oo Status Report Function register Valid register 2 No effect oo oo setup Clear No effect oo oo Operation Register 0 No effect oo oo reading
26. SHORT correction IZI lt 20 Q LOAD correction IZrefl 0 9 lt IZI lt IZrefl e 1 1 In the above table Y is the measured admittance value Z is the measured impedance value and Zref is the LOAD correction standard definition value WARNING Improper high low limits The upper limit value is less than the lower limit value Set the lower limit value to less than the upper limit value Appendix D 247 Error Messages Warning Messages WARNING WARNING Incompatible state file The setting file recalled from external mass storage device has been saved using an E4981A with a different firmware version or different options There may be some parameters set up incorrectly Check the setting This message may appear due to option mismatch firmware mismatch check sum error or state format mismatch 248 Appendix D Mm Ey 2 2 Q v EI e mj E D os ie 2 Technical Information This chapter provides technical information on the operating principles of the E4981A and the basic principles of capacitance measurement 249 Figure E 1 Figure E 2 Technical Information Measurement Principle Measurement Principle This section explains the underlying principle of how the E4981A is used to measure the impedance of a DUT Circuit Model of Impedance Measurement Rs V MAA o BUT 9 4 Lolo az Vs U V A V 2e T V Figur
27. When the desired item is selected press the softkey to confirm the selection An example is given below Press the Meas Setup key Use the cursor keys to select TRIG field Press the MAN softkey to set the trigger type to manual A value entry screen appears In this case pressing a key changes the screen display from the measurement screen to the value entry screen Use the following keys to enter a value e Entry 0 1 2 3 4 5 6 7 8 9 decimal point and plus minus keys e Softkeys How to use each key is described below Entry keys Keys used to enter a value The lt key deletes the last character of the input value Softkeys Use this key to terminate the input You can enter values by using only the entry keys and the softkeys However depending on the instrument setup state when you try to enter a value some of these keys may be unavailable 42 Chapter 3 Getting Started Key Operation Basics Example of operation used to enter a value To learn how to enter a value follow the steps below to change the measurement range setup the measurement range of 220 pF when the measurement frequency is 1 kHz in the following two ways entry using the numeric keys and softkey and entry using only the softkeys Each procedure is described below Step 1 Press the Meas Setup key Step 2 Use the cursor keys to select the RANGE field as shown in Figure 3 1 Figure
28. event status z 2 OPC ON 0 No effect oo oo register Valid register 0 No effect oo oo setup GPIB Address 17 No effect oo i LAN setup Fixed IP 196 168 1 101 No effect oo 1 Fixed 0 0 0 0 No effect E Gateway Fixed Subnet 255 255 255 0 No effect e l mask Auto IP AUTO No effect oo 1 External Controller LAN status Address No effect oo oo Gateway No effect oo oo Subnet Mask No effect oo oo MAC Address No effect oo oo Reconnect after reset to No effect e ai factory state Reconnection No effect oo oo Socket port number 0 No effect oo oo Internal Clock Date No effect oo oo Time No effect oo oo Time zone 0 No effect oo 1 In E4981A the signal monitor is always ON Appendix C 237 3 o n 6 4 5 Ko 7 Initial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up 238 Appendix C m x x je m D n n 5 Q D n Error Messages The Keysight E4981A provides error messages to indicate its operating status This appendix describes the error messages of the E4981A in alphabetical order 239 NOTE 21 1103 168 41 1200 1201 Error Messages Error messages alphabetical order Error messages alphabetical order Error messages are displayed in the lower row of the E4981A s display You can read them out by using the SCPI command This section provides a descriptio
29. key to make a single measurement Generating a trigger with an external signal Step 1 Select external trigger mode according to the procedure in Setting the trigger mode Step 2 Press Display Format key Step 3 Input a trigger signal TTL pulse signal from the Ext Trig terminal on the rear panel or input EXT TRIG through the handler scanner interface to perform a single measurement The trigger signal input from the Ext Trig terminal on the rear panel must meet the following requirements input voltage and pulse width dp High level input voltage 2 5 V lt Low level input voltage 0 0 5 V a Trigger pulse width longer than 100 usec e4981aue0045 Step 4 To repeat measurement repeat Step 3 Selecting polarity for BNC external trigger Step 1 Press System key Step 2 Use the cursor keys to select EXT TRIG POL field Step 3 Use the following softkeys Softkey Description POS Specifies positive edge trigger NEG Specifies negative edge trigger NOTE Setting the trigger polarity for BNC external trigger on the rear panel does not affects the trigger signal on handler scanner interface Chapter 6 127 Executing Measurement Starting triggering Measurement Notes on inputting a trigger signal A trigger signal is not recognized until measurement with the previous input trigger is finished the EOM signal turns to LOW o Ifa trigger is input twice double trigger only the first one i
30. status to HIGH LOW TEST HANDIler STATus INDex sets the Handler Index value to HIGH LOW e TEST HANDIler STATus NC sets the Handler No Contact Low C Reject signal to HIGH LOW e TEST HANDler STATus OVLD sets the Handler Overload signal status to HIGH LOW e TEST HANDler STATus RDY Trig sets the Handler Ready for Trigger signal to HIGH LOW e TEST HANDler TRIGger gets the Handler Trigger signal status as HIGH LOW eo jen o 2 Q I 5 2 e D m 3 gt D ms D e 0 For more information about Handler Test commands refer to the Keysight E4981 A Programming Manual Ending Handler Interface Test When the Handler interface test is finished close the E4981A Handler interface test mode by setting TEST HANDIer MODE command value to OFF so that handler interface pin signal is generated according to the actual measurement result Chapter 8 161 Using Handler Interface Control Check the Handler Interface for Maintenance 162 Chapter 8 ie jen o 2 el e O 5 J 2 D m D m iR e 0 Using Scanner Interface You can select correction data for each channel up to 256sets multi correction function or input output a timing control signal for measurement and scanner operation through the scanner interface This chapter gives information required to configure a scanning system using the scanner interface and multi correction function 163 ju Lu
31. 01 99999 99 Rs Rp 1 000000 aQ 999 9999 EQ G 1 000000 aS 999 9999 ES A 0 0001 999 9999 Available measurement ranges Table 10 2 Table 10 3 and Table 10 4 show recommended measurement ranges recommended for accurate measurement and significant measurement ranges ranges that do not cause overload for each measurement value under the condition D dissipation factor lt 0 5 Measurable capacitance ranges when measurement frequency is 120 Hz Measurement value Recommended measurement range Significant measurement range 10 nF 0 nF 15 nF 0 F 15 nF 22 nF 15 nF 33 nF 0 F 33 nF 47 nF 33 nF 68 nF 0 F 68 nF 100 nF 68 nF 150 nF 0 F 150 nF 220 nF 150 nF 330 nF 0 F 330 nF 470 nF 330 nF 680 nF 0 F 680 nF 1 uF 680 nF 1 5uF 0 F 1 5 uF 2 2 uF 1 5 uF 3 3 uF 0 F 3 3 uF 4 7 uF 3 3 uF 6 8 uF 0 F 6 8 uF 10 uF 6 8 uF 15 uF 0 F 15 uF 22 uF 15 uF 33 uF 0 F 33 uF 47 uF 33 UF 68 uF 0 F 68 uF 100 uF 68 uF 150 uF 0 F 150 uF 220 uF 150 uF 330 uF 0 F 330 uF 470 uF 330 uF 680 uF 0 F 680 uF 1 mF 680 uF 2 mF 0 F 2 mF Chapter 10 pue suolyeoisineds 0L C5 en Ke 2 D 3 D 2 m EI je y D E je 181 Table 10 3 Table 10 4 Specifications and Supplemental Information Basic Specifications Measurable capacitance ranges when measurement frequency is 1 kHz
32. 047 K 0 055 0 036 K 0 055 0 033 ee K 0 055 0 030 K 2 2 pF 0 055 0 045 K 0 055 0 032 K 0 055 0 025 ee K 0 055 0 022 K 0 055 0 020 K 4 7 pF 10 pF 22 pF 47 pF 100 pF 220 pF 470 pF l nF 0 055 0 030 K 0 055 0 022 K 0 055 0 018 K 0 055 0 016 K 0 055 0 015 K Chapter 10 187 C5 en Ke o D 3 D 2 v EI e os 3 D oa ie 2 pue suomneoyioeds OL Specifications and Supplemental Information Basic Specifications Table 10 13 Measurement accuracy of D measurement frequency 1 MHz 1 MHz 1 1 MHz 2 D MEAS TIME 1 2 4 6 8 N isB 0 00035 0 00070 0 00035 0 00047 0 00035 0 00036 0 00035 0 00033 0 00035 0 00030 p oo K oo K eK oo K oo K oan 0 00035 0 00045 0 00035 0 00032 0 00035 0 00025 0 00035 0 00022 0 00035 0 00020 P oo K oo K K oo K K 4 7 pF 0 00035 0 00016 10 pF eE 22 pF 47 pF 0 00035 0 00030 0 00035 0 00022 0 00035 0 00018 0 00035 0 00015 100 pF eK eK eK eK 220 pF 470 pF 1 nF Figure 10 1 Accuracy of D when measurement frequency is 120 Hz measurement range 10 nF to 100 uF measurement signal level 0 5V 0 1 0E 9 e4981cue0028 188
33. 0E7 10E6 1 0E 5 1 0E 4 Measurement Value Cp Cs F e4981cue0030 pue suomneoyioeds 0L c5 en Ke O D D 2 m 3 je y D E ie 2 Chapter 10 193 Specifications and Supplemental Information Basic Specifications Figure 10 7 Accuracy of D when measurement frequency is 1 kHz measurement range 22 uF to 100 uF measurement signal level 1V 0 005 0 0049 0 0048 0 0047 0 0046 e o e 2 Es lt 0 0045 0 0044 0 0043 0 0042 0 00001 0 0001 Measurement Value Cp Cs F e4981cue0033 194 Chapter 10 Specifications and Supplemental Information Basic Specifications Figure 10 8 Accuracy of Cp and Cs when measurement frequency is 1 kHz measurement range 22 uF to 100 uF measurement signal level 1V o 2v g Ww O c O o m i 3 e o lt NI N 1 0 42 Lo pL LL LL d 0 00001 0 0001 Measurement Value Cp Cs F e4981cue0031 pue suomneoyioeds 01 CD en Ke e o E o 2 v 3 e 3 c E e 2 Chapter 10 195 Specifications and Supplemental Information Basic Specifications Figure 10 9 Accuracy of Cp and Cs when measurement frequency is 1 MHz measurement signal level 1V I E ei
34. 3 1 Measurement setup screen lt MEAS SETUP USER COMMENT FUNC Cp D RANGE FREQ 1 kHz LEVEL 14 MEAS TIME 8 AVG 1 TRIG INT SYNC SRC OFF TRIG DLY 8s SRC DLY 16 ms ALC ON FREQ SHFT 8 LOW C REJ OFF REF CLK EXT DEV A aABS REF 12 8915 pF B aABS B 178 521 m Enter value or select e4981auj0015 Step 3 Enter 220 pF Entry using the numeric entry keys and softkeys e e D a o D m D a When data is entered with the numeric entry keys the softkeys change to units labels pF nF uF mF F Press the 2 key 2 key and 0 key Then press the pF softkey Entry using only the softkeys Softkey Description INCR Increments the measurement range in the HOLD mode DECR Decrements the measurement range in the HOLD mode Chapter 3 43 Getting Started Learning Basic Measurement Procedure Learning Basic Measurement Procedure This section describes the procedure used to measure a capacitor with the test fixture This description is intended to help you learn the basic measurement procedure of the E4981A Connecting test fixture CAUTION To avoid failure do not apply DC voltage or current to the UNKNOWN terminal Special A care must be taken for capacitors because they may be charged Fully discharge DUTs before connecting them to the UNKNOWN terminal or the test fixture It is difficult to connect the DUT capacitor directly to the E4981A Therefore a test fixture is gener
35. A B field Use the numeric entry keys to enter the correction value for primary and secondary parameter The entered values are set up as the data for the OFFSET correction for the measurement frequency at the time of data entry 118 Chapter 5 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Preparation for Accurate Measurement Executing Correction Checking displaying Setting up correction Data Checking displaying Setting up correction Data Checking displaying setting up data for OPEN correction Displaying data Selecting parameter format for OPEN correction For information on the procedure to display the data for OPEN correction refer to Checking data for OPEN correction on page 52 Setting up data for OPEN correction You can setup the data for OPEN correction by the following procedure Press Meas Setup key Press CORRECTION softkey Use the cursor keys to select the OPEN G B field Select G B or Cp G which you required Use the right cursor keys to select A field Input your desired value for the primary parameter for OPEN Use the right cursor keys to select B field Input your desired value for the secondary parameter for OPEN Checking displaying setting up data for SHORT correction Displaying data Selecting parameter format for SHORT correction 6 digits For information on the procedure to display the data f
36. BIN and OUT OF BINS OUT OF BINS Readout of count value of Reads out each overload N A Reads out each overload count value overload count value Readout of count values for Reads out the count Reads out the count each channel value of BINI to BIN9 value of BINI to OUT OF BINS and BINS AUX BIN of selected OUT OF BINS and channel AUX BIN of selected channel Readout of count value of Reads out the overload Reads out the overload for each channel count value of the overload count value selected channel of the selected channel Measurement Current Voltage Monitor value readout Always ON Can be turned Can be turned signal monitor monitor ON OFF ON OFF Save Recall Save Recall 10 setups can be stored 10 setups can be stored 10 setups can be in Flash memory and 10 in EEPROM stored in EEPROM setups can be stored in external USB memory Delete Deletes the states from N A N A the memory Appendix B 229 EN N op fee P EN N 00 jee gt z ITI EN fee bard gt w 53 EI fe 3 D m fe 2 pe fe S J oO D Q e Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A Function E4981A 4268A 4288A Display ON OFF Can enable disable the Can enable disable the Can enable disable display of the display of the
37. BIN8 BIN8 Measured 8 No error 0 value BIN9 BIN9 9 AUX BIN OUT OF BINS 0 fee One of BINI to OFF IREI BINO OUT en AUX BIN AUX BIN i Ex ON SREJ e gt Bid aan OUT OF BINS 2 minimum n ive s PLO D OUT ower limit N A 0 ni 3 Other than OUT OF BINS D above PHI D O Overload Cannot be sorted OVLD 1 9 9E37 11 p Low C LOWC OR NC 2 Measured 0 10 value j No Contact Cannot be sorted LOWC_OR_NC 2 9 9E37 11 LOWC becomes active together with the signal that corresponds to the result of normal sorting judgment judg ment result when no error occurs Chapter 8 151 Using Handler Interface Input Output Signal Pin Assignment Input Output Signal Pin Assignment Figure 8 2 shows the input output signal pin assignment of the handler interface connector Table 8 2 gives a description of the input output signals NOTE A slash symbol preceding signal names means that they are negative logic active low Figure 8 2 Pin assignment of the handler interface connector e4981aue0015 A900 1X3 NIS XNV jonsicuixa SNIS8 dO LNO UJ UJ UJ UJ UJ UJ Ww m EEG es o 10o0 4 amp 0nmMN E 0l S INST 9c Q1A0 ON HO 9MO1 raus Old 3901 A33 S9IHL HOJ AQV3H p m s
38. DATA S zy command For more information refer to Programming Manual E go el NOTE The overload count value can be read only through the SCPI command and cannot be a ae D displayed on the screen S DID gc og o5 Setup procedure The BIN count value is displayed in the BINCOUNT DISPLAY page The setup procedure is given below Step 1 Press Display Format Step 2 Press BIN COUNT softkey Step 3 Use the following softkeys Softkey Function COUNT ON Turns ON the count function COUNT OFF Turns OFF the count function RESET COUNT Resets the count function NOTE Clearing the BIN count values initializes all of the count values to 0 NOTE The BIN count value for each channel when the MULTI correction function is ON can be checked only through SCPI command and cannot be displayed on the screen NOTE The overload count value of each channel when the MULTI correction function is ON can be read with the CALCulate1 COMParator COUNT MULTIi OVLD command For more information refer to Programming Manual Chapter 7 147 Sorting Based on Measured Results Comparator Function Making a Beep based on Sorting Judgment Result Making a Beep based on Sorting Judgment Result You can set the conditions for making a beep sound based on the sorting judgment result to one of the following e Makes a beep when the sorting judgment result is OUT OF BINS AUX BIN or OVLD and LOWC OR NC Makes a beep when t
39. Figure 10 15 Dimensions rear view with handle and bumper in millimeters nominal e4981aue0008 Figure 10 16 Dimensions Rear view without handle and bumper in millimeters nominal 208 Chapter 10 Specifications and Supplemental Information General Specifications Figure 10 17 Dimensions side view with handle and bumper in millimeters nominal e4981aue0009 Figure 10 18 Dimensions side view without handle and bumper in millimeters nominal e4981aue0003 pue suolyeoisineds 0L Cen les Ke o oO E oO 5 p v 53 ZA 9 3 D 9 5 Chapter 10 209 Specifications and Supplemental Information General Specifications EMC European Council Directive 89 336 EEC IEC 61326 1 1997 A1 C ISM 1 A CISPR 11 1990 EN 55011 1991 Group 1 Class A IEC 61000 4 2 1995 EN 61000 4 2 1995 4kV CD 4kV AD IEC 61000 4 3 1995 EN 61000 4 3 1996 3 V m 80 1000 MHz 8096 AM IEC 61000 4 4 1995 EN 61000 4 4 1995 1 KV power 0 5 kV Signal IEC 61000 4 5 1995 EN 61000 4 5 1995 0 5 kV Normal 1 kV Common IEC 61000 4 6 1996 EN 61000 4 6 1996 3 V 0 15 80 MHz 80 AM TEC 61000 4 11 1994 EN 61000 4 11 1994 100 1cycle Note When tested at 3 V m according to IEC 61000 4 3 199
40. For checking data for Load correction refer to Checking displaying setting up data for LOAD correction on page 120 56 Chapter 3 Getting Started Learning Basic Measurement Procedure Connecting the DUT capacitor Mount a capacitor on the test fixture The measurement result for the parameter selected in Setting up measurement parameters on page 46 is displayed Figure 3 13 shows an example when the primary parameter is Cp and the secondary parameter is D Figure 3 13 Measurement result display screen when primary parameter is Cp and secondary parameter is D MEAS DISPLAY TEAS FUNC Cp D RANGE AUTO ES FREQ 1k LEVEL 1V BIN MEAS TIME 6 No Cp 2 238487 pF UM D 0 031831 VHON 1 00181 V INON 14 0975 m CH SINGLE DISPLAY CORR B m 0FF BLANK Use softkeys to select e4981auj0014 e e D o D m a Chapter 3 57 Getting Started Learning Basic Measurement Procedure 58 Chapter 3 B OQ O 3S a4 25 TR 9 Cc im no Las an oe n x ag Po 5 El Setting up Measurement Conditions and Display This chapter describes how to initialize the instrument set up the measurement conditions and display It also describes how to save recall the instrument setup state including the measurement conditions 59 Setting up Measurement Conditions and Display Selecting Measurement Parameters Selecting Measurement Parameters You can select one of
41. ON OFFSET correction Use the following procedure to set the OFFSET correction to ON OFF Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the OFFSET field Press the ON softkey to turn ON the OFFSET correction function If you change the setup of the measurement parameter with the OFFSET correction ON the OFFSET correction is automatically set to OFF NOTE NOTE Step 1 Step 2 Step 3 Step 4 NOTE NOTE You cannot separately set the ON and OFF states as the primary parameter and secondary parameter However if you set the correction value to 0 the state is effectively the same as OFF even if the OFFSET correction is ON Therefore you can set up separate ON OFF states by setting the correction value of either parameter to 0 Chapter 5 107 m x lt D Q en imd 2 Q eO ie x D Q g e 1ueujaJnseo v o9je1noov JO uonejedoaug G Figure 5 2 Preparation for Accurate Measurement Executing Correction Obtaining correction Data Obtaining correction Data Obtaining measuring data for OPEN correction Data structure The 120 Hz 1 kHz and 1 MHz data used in the OPEN correction is divided into the data for normal operation and the data of each channel 256 channels for multi correction as shown in Figure 5 2 Structure of data for OPEN correction Multi correction OFF Multi correction ON 120 Hz correction data 120 Hz cable length
42. Overview Product Introduction Product Introduction The Keysight E4981A is a capacitance meter for ceramic capacitor production tests The E49814A is used for evaluating ceramic capacitance at frequencies 120Hz IKHz to 1MHz and test signal levels 0 1 mV to 1 V The E4981A offers C D measurement with a basic accuracy of 0 07 C 10 0005 D at all frequencies with seven digit resolution the dissipation factor resolution is 19106 in every range With its built in comparator the E4981A can output comparison decision results for sorting components into a maximum of ten bins Furthermore by using the handler interface and scanner interface the E4981A can be easily combined with a component handler a scanner and a system controller to fully automate component testing sorting and quality control data processing The GPIB LAN USB interfaces are standard on the E4981A and enable automatic testing 30 Chapter 2 Figure 2 1 Overview Front Panel Names and Functions of Parts Front Panel Names and Functions of Parts This section describes the names and functions of the parts on the E4981A s front panel For more details on the functions displayed on the LCD screen see Screen Area Names and Functions of Parts on page 37 Front panel 7 Preset Key 2 LCD Display 5 Cursor Key 8 Trigger Key 3 Soft Key 6 Entry Key 10 Front USB Port 1 Power Switch 12 Synchronous Clock 9 UNKNOWN Terminal 4 Menu Key 11 Ground Termin
43. Plate 224 Series equivalent circuit model 253 Service Mode 220 SHORT Correction Data Measurement condition 111 Structure 110 How to turn on off short correction 105 SHORT correction Data How to check 55 How to measure 54 Signal level compensation 63 Significant measurement range 181 Single Correction Mode 117 Skip Key 40 Sorting result Handler output 150 Specifications Basic specifications 179 General specifications 206 Storage environment 206 Supplemental Information 198 Synchronous Clock 33 System Date 83 T Test fixture Connection example 44 Throughput 131 Time Measurement time How to set up 66 Specification 199 Trigger delay time How to set up 69 Range 180 Time Zone 82 Timing chart Handler interface 154 Tips Accurate measurement 129 262 Improving measurement speed throughput 131 Tolerance mode 137 Trigger External 35 Trigger delay time How to set up 69 Range 180 Trigger mode 126 Trigger pulse width Ext Trig terminal 127 Handler interface 199 Troubleshooting 219 Typical 178 U Unlock front panel keys 221 USB Memory 88 V Value entry method 42 WwW Warm up time 183 Warning messages WARNING 247 Warranty Period 5 Weight 206 Index REGIONAL SALES AND SUPPORT OFFICES For more information about Keysight Technologies test and measurement products applications services and for a current sales office listing visit our web site http www
44. Setting up Measurement Conditions and Display Setting Up Display Setup procedure Selecting floating fixed point display Press Display Format Use the cursor keys to select the field in which a measurement result of primary parameter or secondary parameter is displayed Use the following softkeys Softkey Description D P AUTO Automatically sets the decimal point D P FIX Fixes the decimal point position D P POS Increments the position of decimal point INCR D P POS Decrements the position of decimal point DECL Displaying measurement result in deviation from reference value deviation measurement mode Functional Description The deviation measurement feature allows you to display deviation values instead of actual measurements A deviation is expressed as the difference between the actual measurement and the stored reference value The deviation measurement feature is useful when you observe how a particular value of a device component changes under varying conditions of temperature frequency bias and other influences You can apply the deviation measurement feature to the primary or secondary parameter or both The deviation measurement feature supports the following two modes e AABS absolute value deviation measurement Identifies and displays the difference between the actual measurement of the DUT and the stored reference value This value is calculated based on the following formula AABS X Y X actua
45. Ub d kas duet Dances ied ecb nae s i Mte ea bates 31 4 Menu keys sies beads P EGRE ERA ERPS R ES beh RO ee ENSE EP REXGdO PUER 32 SUCUISOP KEYS itte tu UeLIL AQ HUE S Me Le URS up uae Mta sidus doge opt gres 32 6 Entty Keys cesser PR GR bee REE EHR Meee Cee ee Relea ey ese dris eus 32 ToPreset Key e sce co yreso obe td Lobos Cae cae owas dis E oh d bog t a he tet er 32 8 lInseserkey 2 4 e PORA EA REEREVRERSURPRAU MEG UEREG RE Pe eevee Eq So pu et wees 32 9 UNKNOWN terminals l lleleeeeeeeeeeee Rhe 32 IO Front USB port uisus oe nee keg ke ea tei Ce RU s e ter eos 33 11 Ground terminal 45 8 exces Bee ERR DE RUE S LEX RUE XP ES WES E EE Rex 33 12 Synchronous ClIoCk erret bexkRERE ERA ERR E E AE rau usd PERS ONE ea ER TU PES 33 Rear Panel Names and Functions of Parts 0 0 0 ccc ce eee hrs 34 T Handler Interface oec Rn eee x De Koeln v Reo eoi Ae gE Ae Be UR Da Rae ee A 34 2 USB USBTMO Interface Port ops 0 ete nen mrs 34 JEAN PO 24 os ecocasee esae s PERAGERE EUER MERE C pd vd Be renee eee eds haces 35 4 External Trigger Input Connector 35 5 serial Number Plate 1 5 2 Re Re RIDEURERIRITG ORA IIS A REI SP XV RAE E AUS 35 6 Power Cable Receptacle to LINE ssseeeeeeeeee mh n eens 35 VD ILUREEERECAEROE TRES URITOTEIREIL OESTE 36 8 Scanner Interface i d elo HORREA RE ARE EA ERG RA AVE Ra Eae s 36 9 GPIB Interface Connector 2 0 eee epe EE e ene teen eee e nee 36 Screen Area Names and
46. always disconnect the power and discharge circuits before touching them DO NOT Service or Adjust the Instrument Alone Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT Substitute Parts or Modify the Instrument To avoid the danger of introducing additional hazards do not install substitute parts or perform unauthorized modifications to the instrument Return the instrument to a Keysight Technologies Sales and Service Office for service and repair to ensure that safety features are maintained in operational condition Dangerous Procedure Warnings Warnings in this manual such as the example below precede potentially dangerous procedures Instructions contained in the warnings must be followed Dangerous voltage levels capable of causing death are present in this instrument Use extreme caution when handling testing and adjusting this instrument gt Bho 1 WARNING CAUTION NOTE Safety Symbols General definitions of safety symbols used on the instrument or in manuals are listed below Instruction Manual symbol the product is marked with this symbol when it is necessary for the user to refer to the instrument manual Alternating current Direct current On Supply Off Supply In position of push button switch Out position of push button switch A chassis terminal a connection to the
47. configurations previously saved in the register that corresponds to your specified register number SAVE Saves the configurations into the register that corresponds to your specified register number DELETE Deletes the configurations previously saved in the register that corresponds to your specified register number Memory Status Information Functional Description Each register number is associated with one of the following memory status values Status value Description 1 The register contains non E4981A configuration information i 0 The register contains no configurations 1 The register does contain configurations 2 The register contains any configuration that was saved under a different firmware version or from another E4981A with a different option s equipped En This value is not applicable when the medium mode is INT internal memory 2 An Incompatible state file warning message is displayed Status information may fail to be correctly recalled NOTE The ninth instrument setting corresponds to Auto Recall Auto recall is not executed when power is ON by pressing the Preset key 92 Chapter 4 Figure 4 5 Step 1 Step 2 Step 3 Step 4 Step 5 NOTE Step 1 Step 2 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Comment Information Functional Description You can view comments entered int
48. during measuring the correction data Missing parameter The number of parameters is less than required by the command For example although the CREJ LIM command requires one parameter such as CREJ LIM 3 no parameter is added to give CREJ LIM Mass storage error An error occurred while accessing the external mass storage device N No data to load There is no setup data for the selected number or no external mass storage device is connected Numeric data error Numeric data is improper Numeric data not allowed A numeric value data element that does not violate the standard has been received where the E4981A does not accept any numeric value data element Appendix D 243 47 321 1080 108 112 350 400 410 420 430 Error Messages Error messages alphabetical order O OPEN measurement incomplete This error occurs when the cable correction OPEN measurement is incomplete Out of memory The E4981A has insufficient memory to perform the requested operation P Power failed Power unit hardware failure is detected Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device Parameter not allowed The number of parameters is larger than required by the command For example although the CREJ LIM command requires one parameter such as s CREJ LIM 3 two parameters are added to give CREJ LIM 0 3 Program mnemonic too
49. for the LOAD correction by using one the following parameter combinations Definition parameters of the standard for LOAD correction Primary parameter Secondary parameter Cp D Q G Rp Cs D Q Rs 112 Chapter 5 Equation 5 1 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Preparation for Accurate Measurement Executing Correction Obtaining correction Data Defining parameters when using a resistance standard When using a resistance standard a standard that has been valued in the R X format as the standard for LOAD correction you must convert it to the Cs Rs format because the E4981A does not allow you to enter a value directly in the R X format as the definition value The conversion expression is given below Conversion expression for a standard valued in the R X format Rs R ll 2nfX where f denotes the measurement frequency Cs Definition procedure The procedure to define the standard value for the LOAD correction is described below Press Meas Setup key Press CORRECTION softkey Use the cursor keys to select the LOAD Cp D field Press the appropriate softkey Cp Cs to select the primary parameter Press the appropriate softkey to select the secondary parameter Use the cursor keys to select REF A B field Use the entry keys to enter the reference value for load Measuring data for LOAD correction Data structure The 120 Hz 1 kHz and 1 MHz data used in th
50. function e Keysight Technologies shall not be responsible for nor assume any liability for data loss in your USB memory device after using it with the E4981A Saving Recalling Instrument Configuration States Overview of Instrument Configurations Pressing the Save Recall opens the CATALOG page You can save recall instrument configuration states in either of two ways e Save into the internal memory e Save into USB memory You can save up to 10 registers into the internal memory and into a single USB memory device Also register numbers have extensions as shown in Table 4 9 Extensions for register numbers Classification Register number Extension No field Internal 0 Recalled when the Recall A key is pressed memory 1 Recalled when the Recall B key is pressed 2 through 8 9 Auto recall USB memory 10 through 19 In this page you can configure each of the following controls with the cursor placed in the corresponding field denoted in parentheses e Medium mode MEDIA field Register number No field 90 Chapter 4 Figure 4 4 Step 1 Step 2 Step 3 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function CATALOG page lt CATALOG gt SAVE INT DATA SAVE COMMENT DISPLAY o cocococococcc cu N 8 1 2 3 4 5 6 8 9 m F unt Use softkeus to select 24981 auj0018 Medium Mo
51. gif files 88 Chapter 4 NOTE Figure 4 3 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Folder Max number of Description files state 10 Contains instrument configuration states system 1 This single file whose name is always system contains the system information 1 This folder can be operated from the SYSTEM page These folders are automatically created in the memory Folder File Structure on USB Memory e4981a Mata E498x001 csv E498x002 csv L 498x999 csv image L E498x001 gi f L E498x002 gif E498x999 gi f state 10 sta 11 sta L 19 sta e4980auj 1148 USB Memory Notes Attention should be given to the following points when using a USB memory device with the E4981A B On D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 e Usea USB memory whose interface is USB 1 1 e Use a USB memory that is USB mass storage class compliant and formatted with FAT16 or FAT32 e Use the USB memory solely for the E4981A Otherwise other data previously saved in the USB memory could be erased e Ifyou cannot save into or recall from the USB memory use another USB memory device Chapter 4 89 Table 4 9 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall
52. in steps of 1 NOTE When you enter the hour with the entry keys use a value within the range of O mid night through 23 11 00 pm 84 Chapter 4 Setting up Measurement Conditions and Display Configuring the GPIB Address Configuring the GPIB Address Functional Description Before you can control the E4981A by issuing SCPI commands from an external controller connected via its GPIB connector you have to configure the GPIB address of your E4981A For information on the concept and implementation of automatic configuration by use of GPIB refer to Programming Manual To configure the GPIB address Step 1 Press System Step 2 Press SYSTEM CONFIG softkey Step 3 Use the cursor keys to select the GPIB ADDR field Step 4 Enter a value with the entry keys in the range of 0 through 30 B OW oo Ba 25 zo e c 3 o O v z 2 0 an og m o9 Bg lt 5 Chapter 4 85 Table 4 6 Step 1 Step 2 Step 3 Step 1 Step 2 Setting up Measurement Conditions and Display Configuring the LAN IP address Configuring the LAN IP address Functional Description To enable the E4981A to communicate over a local area network LAN you have to configure its IP address and connect a LAN cable The IP address can be either automatically obtained or manually configured When the IP address is set to AUTO AUTO IP address is set When the IP address is set to MANUAL the address manually configured is set For inf
53. instrument s chassis which includes all exposed metal structure Stand by This warning sign denotes a hazard It calls attention to a procedure practice or condition that if not correctly performed or adhered to could result in injury or death to personnel This Caution sign denotes a hazard It calls attention to a procedure practice or condition that if not correctly performed or adhered to could result in damage to or destruction of part or all of the instrument This Note sign denotes important information It calls attention to a procedure practice or condition that is essential for the user to understand IMPORTANT Certification Keysight Technologies certifies that this product met its published specifications at the time of shipment from the factory Keysight Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by the Institution s calibration facility or by the calibration facilities of other International Standards Organization members Warranty This Keysight Technologies instrument product is warranted against defects in material and workmanship for a period corresponding to the individual warranty periods of its component products Instruments are warranted for a period of one year During the warranty period Keysight Technologies will at its option either repair or replace products
54. instrument setting corresponds to Auto Recall Auto recall is not executed when power is ON by pressing the Preset key Overview of Save Recall Functionality Configurations and measurement results can be saved into and recalled from the E4981A s internal memory or external USB memory through the save recall functionality Save Methods and Their Uses Table 4 8 shows available save methods and their uses Save Methods and Their Uses Save method Recallable Use Type File format extension Configuration Save Yes To save E4981A s configuration internal memory states into the internal memory ConfigurationSave sta Yes To save E4981A s configuration USB memory states into USB memory Data Save USB CSV format No To save measurement results memory csv into USB memory Screen Save USB GIF format No To save E4981 A s screenshot memory gif into USB memory For information on configuration states that can be saved see Table C 1 Initial settings settings that can be saved recalled settings that can be backed up on page 235 Folder File Structure on USB Memory When you save information into USB memory a predetermined structure scheme is used to organize folders and files on the memory as shown in Figure 4 3 Folder Max number of Description files data 999 Contains measurement results as csv files image 999 Contains screenshots as
55. limit ranges shown in Figure 7 1 and Figure 7 2 respectively Example of limit range settings case 1 0 98nF 0 99nF 1nF 1 00nF 1 02nF 29i 196 CO Q2nF OO1nF 9 BIN1 196 0 91nF Inclusive O Exclusive BIN2 BIN3 4288a0e082 9 e 2 0 02nF Lower and upper limit values of limit ranges for Figure 7 1 comparison of modes Absolute mode Tolerance mode reference value 1 nF Absolute Percent Lower Upper Lower Upper Lower Upper limit value limit value limit value limit value limit value limit value BINI 0 98 nF 0 99 nF 0 02 nF 0 01 nF 2 1 BIN2 0 99 nF 1 01 nF 0 01 nF 0 01 nF 1 1 BIN3 1 01 nF 1 02 nF 0 01 nF 0 02 nF 1 2 Example of limit range settings case 2 0 97nF 0 98nF 0 99nF 1nF 1 0 01nF 2 0 02nF 4288ape004 1 01nF 1 02nF 1 03nF 1 0 01nF Inclusive x j DONE O Exclusive 3 0 03nF Lower and upper limit values of limit ranges for Figure 7 2 comparison of modes Absolute mode Tolerance mode reference value 1 nF Absolute Percent Lower Upper Lower Upper Lower Upper limit value limit value limit value limit value limit value limit value BINI 0 99 nF 1 01 nF 0 01 nF 0 01 nF 1 1 BIN2 0 98 nF 1 02 nF 0 02 nF 0 02 nF 2 2 BIN3 0 97 nF 1 03 nF 0 03 nF 0 03 nF 3 3 138 Ch
56. of counts 1 1 oo Cable length 0 No effect 0 oo l Analog convergence waiting time setup 1 67 m oo oo lm oo oo 270 u oo oo Trigger Triggering No effect oo oo Mode INTernal 1 oo Trigger delay time 0 1 oo Reset No effect oo oo Titec Initiates No effect oo oo system Continuous OFF activation ON 1 oo ON OFF BNC External trigger slope POSitive No effect oo 1 OPEN ON OFF OFF No effect OFF oo 1 correction Parameter type GB No effect GB oo i SHORT ON OFF OFF No effect OFF oo 1 correction Parameter type RX No effect RX oo i ON OFF OFF No effect OFF oo 1 LOAD Measurement range ON No effect ON oo i correction LOAD Definition value 100 nF No effect 100 nF oo l standard definition Parameter type CPD No effec CPD oo l OPEN No effec oo oo co LOAD No effec Cable Om standard No effec oo oo correction Correction coefficient clear No effec oo oo Correction coefficient calculation and save No effect oo oo ON OFF on correction function No effec oo i Offset ON OFF OFF No effec OFF oo i correction Data Setup 0 No effec 0 oo 1 ON OFF OFF No effec OFF oo 1 Multi Channel setup 0 1 oo correction rra Adis definition method OFF No effect OFF M 1 Appendix C 235 3 o n 6 4 5 Ko 7 Table C 1 In itial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up Initial settings settings that can be saved recalled settings that can be backed up
57. out in batch Save Recall function e Upto 10 setup conditions can be written to read from the built in non volatile memory e Up to 10 setup conditions can be written to read from the USB memory e Auto recall function can be performed when the setting conditions are written to Register 9 in the built in non volatile memory pue suolyeoyioeds OL Ce en o o D 3 D v E 2 o E 3 g s 2 Chapter 10 203 NOTE NOTE Specifications and Supplemental Information Supplemental Information Key lock function The front panel keys can be locked GPIB interface Complies with IEEE488 1 2 and SCPI USB host port Universal serial bus jack type A 4 contact positions contact 1 is on your left female for connection to USB memory device only The following USB memory can be used Complies with USB 1 1 mass storage class FAT16 FAT32 format maximum consumption current is below 500 mA Recommended USB memory 1GB USB 2 0 HI SPEED DATA TRAVELER Keysight PN 1819 0375 Use the prepared USB memory device exclusively for the E4981A otherwise other previously saved data may be cleared If you use a USB memory other than the recommended device data may not be saved or recalled normally Keysight Technologies will not be responsible for Data loss in the USB memory caused by using the E4981A USB interface port Universal serial bus jack type mini B 4 contact positions complies with e USB
58. percentage of the measurement range full scale The applicable measurement range varies depending on the setting of the measurement range mode e For the auto range mode The minimum measurement range is applicable regardless of whether the measurement is actually performed Specifically it is one of the following measurement ranges When measurement frequency is 120 Hz 10E 9 F 10 nF range When measurement frequency is 1 kHz 100E 12 F 100 pF range When measurement frequency is 1 MHz 1E 12 F 1 pF range e For the fixed range mode The measurement range currently selected is applicable that is it is the range in which the measurement is actually performed Chapter 7 143 ynseH peunsee v uo peseg uiuos 7 Sorting Based on Measured Results Comparator Function Rejecting Excessively Low Measured Results Low C reject function For example if you make a measurement with the 1 uF range fixed and set the limit to 1 Low C is detected when the measured primary parameter value Cs or Cp is equal to or less than 10 nF Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor key to select LOW C REJ field Step 3 Use the entry keys or softkeys to enter the limit value When you enter the value with the entry keys the softkey unit label changes to 96 Softkey Function INCR Increments the Low C Reject value in steps of 0 001 DECR Decrements the Low C Reject value in steps of 0 001 144 Chapter 7 Sort
59. states previously saved in register number 9 on Internal memory To use the auto recall feature Press Save Recall Use the cursor keys to select the No 9 A field Chapter 4 95 Step 3 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 1 Step 2 Step 3 Step 4 NOTE NOTE Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Press the RECALL softkey to configure the instrument using the instrument configuration information previously saved in register 9 on the Internal memory Transferring auto recall setting to another E4981A Using external USB memory Perform auto recall Connect external USB memory Press Save Recall Use the cursor keys to select MEDIA to EXT Use the cursor keys to select memory location from 10 to 19 Press SAVE softkey to save the data in the USB memory Connect the USB memory to another E49814A recall the saved state After recalling the state save it to internal memory No 9 A Using LRN command Perform auto recall Retrieve the intrument configuration using LRN command via GPIB LAN USB Send the instrument configurations retrieved in Step 2 to another E4981A Save the data to internal memory No 9 A Saving Measurement Results into USB Memory You can save measurement results obtained by the E4981A into USB memory as CSV files You can later load your saved files int
60. that prove to be defective For warranty service or repair this product must be returned to a service facility designated by Keysight Technologies The buyer shall prepay shipping charges to Keysight Technologies and Keysight Technologies shall pay shipping charges to return the product to the Buyer However the Buyer shall pay all shipping charges duties and taxes for products returned to Keysight Technologies from another country Keysight Technologies warrants that its software and firmware designated by Keysight Technologies for use with an instrument will execute its programming instruction when properly installed on that instrument Keysight Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Keysight Technologies specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Exclusive Remedies The remedies provided herein are the Buyer s sole and exclusive remedies Keysight Technologies shall not be liable for any direct indirect special inc
61. the accuracy of D is 0 00035 0 00030ceeK The measurement signal level is 0 5 the measurement range is 10 nF and the measured result of Cp or Cs is 8 00000 nF Therefore K2 1 0 5 e9 10 8 00000 22 5 Substitute this result into the equation As a result the accuracy of Cp or Cs is 0 055 0 030c02 5 0 13 and the accuracy of D is 0 00035 0 00030c2 5 0 0011 Therefore the true Cp or Cs value exists within 8 00000 8 00000 0 13 100 8 00000 0 0104 nF that is 7 9896 nF to 8 0104 nF and the true D value exists within 0 01000 0 0011 that is 0 0089 to 0 0111 When measurement parameter is Cp Q or Cs Q The following is an example of calculating the accuracy of Cp or Cs and Q assuming that measured result of Cp or Cs is 8 00000 nF and measured result of Q is 20 0 The accuracy of Cp or Cs is the same as that in the example of Cp D From Table 10 11 the equation to calculate the accuracy of D is 0 00035 0 00030cK Substitute K 2 5 same as Cp D into this equation The accuracy of D is 0 000354 0 00030e92 520 0011 Then substitute the obtained D accuracy into the equation specified in Table 10 6 The accuracy of Q is 20 0 e00 0011 1 x 20 0 0 0011 0 44 1 x 0 022 that is 0 43 to 0 45 Therefore the true Q value exists within the range of 19 57 to 20 45 pue suomneoyioeds 0L c5 en Ke O D D 2 m 3 je y D E ie 2 Chapter 10 211 Specifications and Supplemental Informatio
62. the auto range or hold range Selectable from the auto range or hold range Selectable from the auto range or hold range Measurement time integration time Mode Selectable from Short Selectable from Short Selectable from Short Medium or Long Medium or Long or Long Using SCPI command only Time Selectable from 1 2 4 N A N A 6 or 8 Averaging count Can be set up freely within the range of 1 to 256 Can be set up freely within the range of to 256 Can be set up freely within the range of 1 to 256 Cable length setup Selectable from 0 m 1 m or 2 m Selectable from 0 m 1 m or2 m Selectable from 0 m 1m or2 m Source delay setup Can be set within 0 1 sec in steps of 100 us Can be set within 0 1 sec in steps of 1 us N A Trigger delay setup Can be set within 0 1 sec in steps of 100 Lis Can be set within 0 1 sec in steps of 1 ms Can be set within 0 1 sec in steps of 1 ms Analog convergence waiting time setup Can be setup within the range of 0 to 1 s in steps of 100 us N A N A 226 Appendix B Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A Function E4981A 4268A 4288A Correction OPEN correction ON OFF OPEN correction Entire correction OPEN correct
63. the display of the measurement result measurement result measurement result Number of Digits setup N A Selectable from 4 5 or Selectable from 4 5 6 digits or 6 digits Fixed point display setup Selectable from fixed N A Selectable from fixed point display or floating point display or point display floating point display Deviation Display mode For the measured For the measured For the measured measurement mode primary secondary primary secondary primary secondary setup parameter value parameter value parameter value Selectable from Selectable from Selectable from Deviation measurement Deviation Deviation mode OFF the measurement mode measurement mode measured value is OFF the measured OFF the measured displayed as it is or value is displayed as it value is displayed as Deviation measurement lis or Deviation itis or Deviation mode ON displayed in measurement mode measurement mode a deviation relative to ON displayed in a ON displayed in a any reference value deviation relative to deviation relative to any reference value any reference value Reference value Sets the reference value Sets the reference Sets the reference for primary secondary value for value for parameter primary secondary primary secondary parameter parameter Setup of displayed page Only 1 display Only 1 display format Only 1 display format format area but 2 distinct display but 2 distinct display areas the main display areas the
64. the external trigger EXT When KEY LOCK is LOW regardless of the ON OFF state of the comparator function the key lock state remains unchanged Figure 8 1 Output of comparator sorting result to the handler interface Output from BIN1 9 0UT OF BINS AUX BIN Output from PHI PLO SREJ OUT OF BINS PHI No signal is output BIN1 9 JOUT_OF_BINS jour lt z BINS OUT OF BINS IAUX BIN AUX BIN Z 7 AAAA No signal is output BIN1 9 4931oumJjeg 4eul Ag v E amp s lt v 2 a3 E e OUT OF BINS PLO Secondary Parameter Secondary Parameter Signals encircled with are outputted when the AUX BIN function is ON Signals shaded with 7777 are outputted if there is a gap between limit ranges of BINs for primary parameters 42680707E 150 Chapter 8 Using Handler Interface Output of Comparator Sorting Result Table 8 1 Relationship between comparator sorting result and output signals of the handler interface Judgment result GPIB output Handler interface Measurement 7 signals that become Measu BIN status g Measured Primary parameter Secondary parameter active rement value sorting status result BINI BINI 1 BIN2 BIN2 2 BIN3 BIN3 3 BIN4 BIN4 4 BINS IN BINS 5 BIN6 BIN6 6 IN BIN7 BIN7 7
65. the initial setting list are all cleared I You can get the same result by issuing the RST command FACTORY When you initialize the instrument into this state it reverts to DEFAULT factory default settings with all user configurable data cleared LAN RESET When you initialize the instrument into this state the LAN setting is returned to the factory default state It takes a few seconds for the initialization to complete e e D a o D m D a For more information on each default state and affected settings see Appendix C Initial Settings on page 233 Chapter 3 45 Figure 3 3 Step 1 Step 2 Step 3 Step 4 Getting Started Learning Basic Measurement Procedure Setting up measurement parameters Set up the primary parameter and secondary parameter you want to measure The E4981A allows you to select the parameters from the following combinations Primary parameter Secondary parameter Cp D Q G Rp Cs D Q Rs Each parameter is described below Cp Capacitance value when considering equivalent parallel resistance Cs Capacitance value when considering equivalent series resistance D Dissipation factor Q Quality factor inverse of D G Equivalent parallel conductance Rp Equivalent parallel resistance Rs Equivalent series resistance The procedure to set up the measurement parameters is described below Press the Display format key Press the MEAS DISPLAY s
66. the measurement parameter combinations shown in Table 4 1 Table 4 1 Measurement parameters Primary parameter Secondary parameter Cp D Q G Rp Cs D Q Rs Each parameter is described below Cp Capacitance value measured using the parallel equivalent circuit model Cs Capacitance value measured using the series equivalent circuit model D Dissipation factor Q Quality factor inverse of D G Equivalent parallel conductance measured using the parallel equivalent circuit model Rp Equivalent parallel resistance measured using the parallel equivalent circuit model Rs Equivalent series resistance measured using the series equivalent circuit model Figure 4 1 Relationship between equivalent circuit model and measurement parameters Parallel equivalent circuit model Cp Series equivalent circuit model Cs Rs L D 2xfCsRs 1 2mfCs Rs Qs f Measurement signal frequency 120 Hz 1 kHz 1 MHz e4981aue0049 For information on the selection criteria for the equivalent circuit model refer to Selection criteria of parallel series equivalent circuit models on page 253 Setup procedure For details on setup procedure refer to Setting up measurement parameters on page 46 60 Chapter 4 EEE NOTE Step 1 Step 2 Step 3 NOTE Step 4 NOTE Step 5 Step 6 Step 7 Setting up Measurement Conditions and Display Inputting Comm
67. through E498x999 gif and you cannot change the file names 100 Chapter 4 Preparation for Accurate Measurement Executing Correction This chapter gives an overview and the operational procedures of the different types of correction function available in the E4981A m x lt D Q en 2 Q eO ie D Q r e jueujeJnsee N e1eJnooy JO uoneJedoauJg G 101 Preparation for Accurate Measurement Executing Correction Overview of Correction Function Overview of Correction Function The E4981A provides several types of corrections such as OPEN SHORT LOAD OFFSET amp Cable correction This section explains various types of corrections available in the E4981A OPEN SHORT LOAD OFFSET Correction The E4981A provides four types of correction functions OPEN correction SHORT correction LOAD correction and OFFSET correction The following table gives a brief description of each correction function Type of correction Description OPEN correction Corrects errors caused by parallel stray admittance of the test fixture This correction is based on the results of admittance measurement in the OPEN state which is performed in advance OPEN correction can be performed at any frequency 120Hz 1 kHz 1MHz and the correction data remains valid for all measurement frequencies SHORT correction Corrects errors caused by series residual impedance of the test fixture Thi
68. value SAVE Saves the cable correction data CLEAR Clears the cable correction data NOTE When overload occurs during the measurement and measurement is aborted an error occurs Measurement results are valid even if warning message is displayed in the following condition e Reference Load measurement when auto range is not executed in 100pF or 220pF range e Open measurement when measurement value is not in IYI lt 20uS range Chapter 5 123 m x lt D Q en imd 2 Q eO ie x D Q g e 1ueujaJnseo v o9je1noov JO uonejedoaug G Preparation for Accurate Measurement Executing Correction Obtaining cable correction data 124 Chapter 5 jo m x lt D Q en 2 Kel D iR n en D 3 D Executing Measurement This chapter describes how to generate a trigger to start measurement It also provides helpful information for measurement 125 Table 6 1 NOTE Step 1 Step 2 Step 3 Executing Measurement Starting triggering Measurement Starting triggering Measurement The method used to start trigger measurement varies depending on the setup of the trigger mode as shown in Table 6 1 below Trigger mode Trigger mode Method to generate a trigger Internal trigger INT The internal trigger is used to generate a trigger Pressing the Trigger key on the front panel generates a Manual trigger MAN tiegen
69. 0 055 0 022 K 0 055 0 018 K 0 055 0 016 K 0 055 0 015 ee K 220 uF 470 uF 1 mF 0 4 0 060 K 0 4 0 044 K 0 4 0 036 K 0 4 0 032 K 0 4 0 030 ee K Table 10 9 Measurement accuracy of D measurement frequency 120 Hz D MEAS TIME N 10 nF 22 nF 47 nF 100 nF 220 nF 470 nF 1 uF 2 2 uF 4 7 UF 10 uF 22 uF 47 uF 100 uF 0 00035 0 00030 eK 0 00035 0 00022 K 0 00035 0 00018 K 0 00035 0 00016 K 0 00035 0 00015 K 220 uF 470 uF mF 0 004 0 00060 co K 0 004 0 00044 co K 0 004 0 00036 co K 0 004 0 00032 co K 0 004 0 00030 co K Chapter 10 185 C5 en Ke o D 3 D 2 v EI e m 3 D oa je 2 pue suomneoyioeds 01 Table 10 10 Specifications and Supplemental Information Basic Specifications Measurement accuracy of Cp Cs measurement frequency 1 kHz Cp Cs 70 MEAS TIME N 100 pF 0 055 0 070 ee K 0 055 0 047 ee K 0 055 0 036 e K 0 055 0 033 ee K 0 055 0 030 ee K 220 pF 0 055 0 045 ee K 0 055 0 032 ee K 0 055 0 025 ee K 0 055 0 022 ee K 0 055 0 020 e K 470 pF 1 nF 2 2 nF 4 7 nF 10 nF 22 nF 47 nF 100 nF 220 nF
70. 0 Hz 1 kHz The information about Frequency 1 MHz 1 MHz 1 1 MHz 2 in specifications supplemental and general information is invalid for E4981A 002 178 Chapter 10 Specifications and Supplemental Information Basic Specifications Basic Specifications Measurement parameters s Cp D Cp Q Cp Rp Cp G e Cs D Cs Q Cs Rs where Cp Capacitance value measured using the parallel equivalent circuit model Cs Capacitance value measured using the series equivalent circuit model D Dissipation factor Q Quality factor inverse of D G Equivalent parallel conductance measured using the parallel equivalent circuit model Rp Equivalent parallel resistance measured using the parallel equivalent circuit model Rs Equivalent series resistance measured using the series equivalent circuit model Measurement signals 120 Hz 1 kHz 1 MHz Allowable frequencies 0 98 MHz 1 MHz 2 Frequency 0 99 MHz 1 MHz 1 1 01 MHz 1 MHz 1 1 02 MHz 1 MHz 2 Accuracy 0 02 Range 0 1 V 1V Level Resolution 0 01 V Accuracy t 596 Output mode Continuous Synchronous Source delay time Range Otols Resolution 0 1 ms Source delay time is effective when output mode is set to Synchronous mode pue suoneoyioeds 0L C5 en Ke o D 3 D 2 v EI e m 3 D oa je 2 Chapter 10 179 Specifications and Supplemental Information Basic Specifications Me
71. 00 nF range 20 Q nom Frequency 1 MHz 1 MHz 1 1 MHz 2 20 Q nom This value is defined without an extension cable 198 Chapter 10 Figure 10 11 Measurement time Timing chart and measurement time EXT TRIG INDEX EOM Specifications and Supplemental Information Supplemental Information READY FOR l _TRIG e4981aue0013 Table 10 15 shows the values of T1 T5 when the following conditions are met Display update Measurement range mode Source delay time Trigger delay time Averaging factor Synchrounous Source Signal Level Compensation Measurement Time Mode N Correction Multi correction LAN Chapter 10 Off Hold 0 ms 0 ms 1 On Off 1 On On Not connected 199 c5 en Ke O D D 2 m 3 je y D E ie 2 pue suomneoyioeds 0L Table 10 15 Table 10 16 Table 10 17 Specifications and Supplemental Information Supplemental Information Values of T1 T5 Measurement Minimum Typical time mode N value value TI Trigger pulse width N A lus T2 Trigger response time of N A 40 us READY FOR TRIG INDEX and EOM 1 120 Hz 10 0 ms T3 Analog measurement 1 1 kHz 2 0 ms T3 4 T Measurement me tine 1 1 MHz 1 3 ms T4 Measurement N A u 1 0 ms computation time T5 Trigger wait time N A O us Display time Except for t
72. 1 kHz and 1MHz are measured and each data frequency is saved Therefore even if the measurement frequency is changed there is no need to reset the correction The result is set up as the data for normal operation when the multi correction function is OFF and as the data for multi correction when the function is ON for the channel that has been selected at execution 110 Chapter 5 Preparation for Accurate Measurement Executing Correction Obtaining correction Data The table below summarizes how data is set up depending on the setup at execution Multi Setup of f measurement Data correction signal frequency 120 Hz 120 Hz correction data and 120 Hz cable length for normal operation 1 kHz 1 kHz correction data and 1 kHz cable length for normal OFF operation 1 MHz correction data 1 MHz cable length and 1 MHz TE frequency shift for normal operation 120 Hz correction data and 120 Hz cable length for the 120 Hz channel selected at the time of multi correction measurement 1 kHz correction data and 1 kHz cable length for the channel 1 kHz ON selected at the time of multi correction measurement 1 MHz correction data 1 MHz cable length and 1 MHz 1 MHz frequency shift for the channel selected at the time of multi correction measurement Measurement conditions during data measurement The data for the SHORT correction is measured under the following measurement conditions e Measurem
73. 1 kHz correction data 1 kHz cable length For channel 0 1 MHz correction data 1 MHz cable length 1 MHz frequency shift 120 Hz correction data 120 Hz cable length 1 kHz correction data 1 kHz cable length For channel 255 1 MHz correction data 1 MHz cable length 1 MHz frequencty shift e4981aue0040 Measured data For Open correction 120 Hz 1 kHz and 1MHz are measured and each data frequency is saved Therefore even if the measurement frequency is changed there is no need to reset the correction The result is set up as the data for normal operation when the multi correction function is OFF and as the data for multi correction when the function is ON for the channel that has been selected at execution 108 Chapter 5 Preparation for Accurate Measurement Executing Correction Obtaining correction Data The table below summarizes how data is set up depending on the setup at execution Multi Setup of A measurement Data correction s signal frequency 120 Hz 120 Hz correction data and 120 Hz cable length for normal operation OFF 1 kHz 1 kHz correction data and 1 kHz cable length for normal operation 1 MHz correction data 1 MHz cable length and 1 MHz 1 MHz frequency shift for normal operation 120 Hz correction data and 120 Hz cable length for the 120 Hz channel selected at the time of multi correction measurement 1 kHz 1 kHz correction data and 1 kHz cable length for the channel se
74. 120 LVL COMP 63 M Manual change 224 Manual trigger 126 Max On key 42 Maximum discharge withstand voltage SPC 205 Meas Time key 66 Measurement Accurate measuremen 129 Improving measurement speed throughput 131 Start 126 Measurement accuracy 183 Measurement circuit protection 205 Measurement display range 181 Measurement parameter How to set up 46 Selection of circuit model 253 Measurement range How to set up 64 Specification 180 Measurement range mode 64 Measurement signal Frequency How to set up 48 Specification 179 Level Index Index How to set up 49 Specification 179 Measurement time How to set up 66 Specification 199 Medium 91 Medium Mode 91 Menu screen 42 Min Off key 42 Multi correction Channel How to select 165 How to measure correction data 166 On Off 164 Multi Correction Mode 117 N Need corr meas 247 Need load meas 247 Need open meas 247 Need short meas 247 Nominal 178 Numeric key 42 o Offset Correction How to turn on off offset correction 107 Offset correction How to set up data 118 Offset key OfsEnt 118 OPEN Correction Data Measurement condition 109 Structure 108 How to turn on off open correction 105 OPEN correction Data How to check 52 How to measure 51 Operating environment 206 Operating Environments 20 Operation manual 7 Out of limit 121 247 Outer dimensions 206 OVLD When nothing is connected 220 P Pa
75. 5 2 D m E gt D ak iR e 0 Chapter 9 175 NOTE Using Scanner Interface Control Check the Scanner Interface for Maintenance Control Check the Scanner Interface for Maintenance To control check the Scanner interface the Keysight E4981A provides several test commands related to various operations of scanner interface This section explains the various test commands available in E4981A to check trouble the scanner interface Starting Scanner Interface Test Scanner interface can be set into test mode by using the TEST SCANner MODE command When this command value is set to ON the scanner interface pin signal value can be controlled read by TEST SCAN xxxx commands Using Scanner Interface Test Commands After setting the TEST SCANner MODE command value to ON the following commands can be used to control read the scanner interface pin signal value TEST SCANner CH sets the Scanner Channel No e TEST SCANner EOM sets the Scanner End of Measurement EOM status to HIGH LOW e TEST SCANner INDex sets the Scanner Index value to HIGH LOW e TEST SCANner VALid gets the Scanner CH VALID signal status as HIGH LOW e TEST SCANner TRIGger gets the Scanner Trigger signal status as HIGH LOW For more information about Scanner Test commands refer to the Keysight E4981A Programming Manual Ending Scanner Interface Test When the Scanner interface test is finished close the E4981A Scanner interface
76. 5 MEAS TIME Minimum Typical value value TI Trigger pulse width NA lus T2 Trigger response time of READY FOR TRIG NA 40 us INDEX and EOM T3 T4 T3 Analog measurement 1 120 Hz 10 0 ms time 1 1 kHz 2 0 ms Measurement time 1 1 MHz 1 3 ms T4 Measurement N A u L sns computation time T5 Trigger wait time N A 0 us 9 C Q 2 a I D J 2 D gt e D A D O D Chapter 8 155 Table 8 4 Table 8 5 Using Handler Interface Electrical Characteristics Electrical Characteristics Output signals The output signals are available as open collector outputs with photo coupler isolated You can obtain each voltage output by connecting a pull up resistor refer to Table 8 4 to the exterior of the E4981A Guide for pull up resistor values Typical resistance Pull up voltage V Resistance value Q Resistance value Q Keysight part number 5 1 7k 5 V 3 mA 1 78 k 0757 0278 9 3 0k 9 V 3 mA 3 16k 0757 0279 12 4 0k 12 V 3 mA 4 22k 0698 3154 15 5 0k 15 V 3 mA 5 11 k 0757 0438 24 8 0 k 24 V 3 mA 8 25k 0757 0441 The output signals are divided into two groups judgment output signals and operation output signals You can specify a different pull up voltage for each of them Table 8 5 shows the electrical characteristics of the output signals Figure 8 4 and Figure 8 5 show the circuit diagrams of the judgment output signals and opera
77. 5 EN 61000 4 3 1996 measurement accuracy is double the accuracy of the basic specification when the test frequency is 1 kHz and the instrument measurement range is 100 pF CG 10149 AS NZS 2064 1 2 Group 1 Class A Safety European Council Directive 73 23 EEC IEC 61010 1 1990 A1 A2 EN 61010 1 1993 A2 C ISM 1 A INSTALLATION CATEGORY II POLLUTION DEGREE 2 INDOOR USE IEC60825 1 1994 CLASS 1 LED PRODUCT GR LR95111C CAN CSA C22 2 No 1010 1 92 LXI www lxistandard org LXIis the LAN based successor to GPIB providing faster more efficient connectivity Keysight is a founding member of the LXI consortium 210 Chapter 10 Specifications and Supplemental Information Sample Calculation of Measurement Accuracy Sample Calculation of Measurement Accuracy This section describes an example of calculating the measurement accuracy for each measurement parameter assuming the following measurement conditions Measurement signal frequency 1 kHz Measurement signal level 0 5 V Measurement range 10 nF Measurement time mode N 1 Ambient temperature 28 C When measurement parameter is Cp D or Cs D The following is an example of calculating the accuracy of Cp or Cs and D assuming that measured result of Cp or Cs is 8 00000 nF and measured result of D is 0 01000 From Table 10 10 the equation to calculate the accuracy of Cp or Cs is 0 055 0 030c0K and the equation to calculate
78. 56 data sets to carry out correction The correction features default to single correction mode In multiple correction mode the channel number for which correction data is selected To set up single multiple correction mode Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the MULTI field Use the following softkeys Softkey Description ON Turns ON the multiple correction mode OFF Turns OFF the multiple correction mode NOTE For more information on measurement parameters see Setting up measurement parameters on page 46 Step 5 Step 6 Step 7 Step 8 Use the cursor keys to select the CH field Use the numeric entry keys to enter the number of channels or use the following softkeys Softkey Description INCR Increments the channel number in steps of 10 INCR Increments the channel number in steps of 1 DECR Decrements the channel number in steps of 1 DECR Decrements the channel number in steps of 10 Use the cursor keys to select the LOAD REF field Use the following softkeys Softkey Description SINGLE Defines a single LOAD correction standard value commonly applied to all channels MULTI Defines a LOAD correction standard value for each channel Chapter 5 117 m x lt D Q E 2 Q e x Q ze 2 1ueuJjaJnseo v 9je1noov JO uonejedaujg G Table 5 2 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6
79. 69 Setup procedure i i deed ey eA eee dade RE alee RG a Vp edie e vee ed eae he 69 Outputting the Measurement Signal only during the Measurement to Protect the Contact Pin Synchronous Source f nctlon x 2o Re ERE RE REESE IC bbsR REISK reQepESReRRq ew bean abate dies 70 Setup procedure eeu be bphex ERE bp PERS EE ead RE a 70 Setting up frequency shift 0 2 cee eee e erent reese 72 Nine d Pc 72 Setting Up Display ese esd ed echo patched beh batch awh Gob e kone dea nade deen debe deb 73 Turning ON OFF display cech eph ahh cp bun te RR REDE RR ae aba gt RE BEE 73 Using fixed point display for measurement result l llleeeeeeeeeee 73 Displaying measurement result in deviation from reference value deviation measurement mode 74 Setting up Contact Check cece loseeee b becker gabe ics RR ERE b Pb d een TI Setup procedure 4 sve ep Vp pe bc hee epe e poc en epe ERR por Reid TI 10 Contents Setting Up Condition To Make A Beep 0 2 ec ett eens 79 Setup procedure ssec sepe e use he ue e Ret Wee eee ekrec se ure e Roe disce RC e ee de 79 Turning On Off the Beep Feature 0 cee I ene 80 Functional Description 2 leider IM bL eA he bed ok Loree teeter urhe ERE eke be ke be OT CERTE 80 Changing the Beep Tone gi Re eda RERRE MER Wiehe de bee a EREE Eee aa E ERR 81 Functional Description s c0s ee cei ew RE RE EE eee ee ela eddie ed e e Roe eges 81 Configuring the Time Zone poicc cesera r
80. 88 2 11 5 1 1 5 Appendix D 241 1070 105 114 101 103 121 131 141 151 Error Messages Error messages alphabetical order F Fan failed Cooling fan hardware failure is detected Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device G GET not allowed A group execution trigger GET has been received in a program message Refer to IEEE488 2 7 7 H Header suffix out of range The header suffix is out of range I Invalid character Invalid characters have been found in the program message string For example in a correct program message CALC1 FORM CP an ampersand amp is inserted by mistake to give CALC1 FORM amp CP Invalid separator The parser syntax analysis program expects a separator but a character other than a separator has been sent For example although the correct way is to use to separate two sent program messages such as CALC1 FORM CP OPC the semicolon needed to separate the program messages is missing to give CALC1 FORM CP OPC Invalid character in number An invalid character for the data type of the syntax analysis target has been received For example alphabetical characters exist in a decimal value or 9 exists in octal data Invalid suffix The suffix does not meet the syntax defined in IEEE488 2 7 7 3 2 or is inappropriate for the E4981A Invali
81. A is shipped from the factory it contains typical correction data for both 1m and 2m cables Cable correction can compensate the error for your own cable The following equipment are required for cable correction Open Termination 42090A Open termination do not use BNC adapter as an alternative Load Standard 16383A 100 pF capacitor or 42037A 1 kQ resistor Cable correction is not required in the following conditions e For 120 Hz and 1 kHz measurement frequency e When Open Short and Load correction is executed at 1 MHz measurement frequency 104 Chapter 5 L uAALL 1 Step 1 Step 2 Step 3 Step 4 NOTE NOTE NOTE Preparation for Accurate Measurement Executing Correction Turning ON OFF Correction Functions Turning ON OFF Correction Functions You can turn ON OFF each correction function separately Turning on OPEN correction Use one of the following two ways to set the OPEN correction to ON Measuring data for OPEN correction Execute measurement of the data for the OPEN correction When the measurement finishes successfully the OPEN correction is automatically set to ON For information on the measurement procedure for the data used in the OPEN correction refer to Measuring data for OPEN correction on page 51 Setting up ON OFF directly Use the following procedure to set the OPEN correction to ON OFF Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the
82. C OFF TRIG DLY 8 s SRC DLY 85s ALC OFF FREQ SHFT LOW C REJ REF CLK INT DEV OFF REF A BF B DFF B B8 press twice skip key e4981auj0003 40 Chapter 2 Getting Started This chapter describes the basic operations of the Keysight E4981A Key Operation Basics explains how to use the basic key operations Learning Basic Measurement Procedure describes how to take basic measurements of capacitors capacitance with the E4981A 41 eo Q o e p E m D e Step 1 Step 2 Step 3 NOTE Getting Started Key Operation Basics Key Operation Basics Three types of operations can take place when you press a front panel key of the E4981A Asingle key press completes the operation Amenu for item selection appears on the screen e A value entry screen appears The basic operation for each case is described below A single key press completes the operation Single key operation turns ON OFF the function or changes the setup Specifically each key press turns the setup ON OFF Two examples are given below Pressing Recall A key recalls configuration states from register 0 e Pressing Local Lock key locks and unlocks hard keys and softkeys on the front panel A menu for item selection appears on the screen In this case pressing a key changes the display of softkey area for selecting items Use the cursor keys or menu keys to change the selection
83. Confirm that the power supplied to the E4981A meets the following requirements Table 1 2 Requirements Voltage 90 to 264 Vac Frequency 47 to 63 Hz Maximum power consumption 150 VA IN Setting up the Fuse Please use the following fuse type UL CSA type Slo Blo 50020 mm miniature fuse 3 A 250 V Keysight part number 2110 1017 When you need a fuse contact your nearest Keysight Technologies sales and service office To verify and replace the fuse remove the power cable and pull out the fuse holder Figure 1 5 Fuse Holder and Power Cable Receptacle service trained personnel Power Cable Inlet Fuse holder T3A 250V e4981aue0020 Chapter 1 25 Step 1 WARNING Step 2 WARNING NOTE Unpacking and Preparation Preparations before Use Verifying and Connecting the Power Cable The three wire power cable attached to the E4981A has one wire serving as a ground Using this power cable allows the E4981A to be grounded thereby protecting you against electrical shock from the power outlet Confirm that the power cable is not damaged Never use a power cable showing any sign of damage Faulty cables can cause electric shock Use the supplied cable to connect the power cable receptacle on the real panel of the E49814A to a
84. E4981A cannot detect further details of the error This error code simply indicates the occurrence of a command error that is defined in TEEE488 2 11 5 1 1 4 F m x x o D n n 5 Q D n Character data error An error not included in the error numbers between 141 and 149 has occurred during the syntax analysis of a character data element Character data not allowed Character data not allowed for this operation D Data type error The parser has recognized impossible data elements For example numeric value or string data is expected but block data is sent Data out of range A data element that does not violate the standard has been received out of the range defined for the E4981A Data corrupt or stale The data is invalid or a newly initiated read operation has not been completed since the latest access E Exponent too large The absolute value of the exponent has exceeded 32 000 Refer to IEEE488 2 7 7 2 4 1 Expression error An error not included in the error numbers between 171 and 179 has occurred during the syntax analysis of equation data Expression data not allowed An equation data element has been received where the E4981A does not accept any equation data element Execution error A comprehensive execution error has occurred for which the E4981A cannot detect further details This error code simply indicates the occurrence of an execution error that is defined in IEEE4
85. EN correction The procedure is given below Press the Meas Setup key Press the CORRECTION softkey 52 Chapter 3 Getting Started Learning Basic Measurement Procedure Step 3 Use the cursor keys to select the OPEN G B field Figure 3 10 OPEN Correction Data CORRECTION 6 B OPEN ON CABLE Bm SHORT OFF MULTI OFF LOAD OFF LOAD REF SINGLE Cp G OFFSET OFF LOAD RNG AUTO CH B OPEN A 711 419 nS B 273 027 nS SHORT R X A 80 B R LOAD Cp D A 188 nF B B8 REF 188 nF B 8 OFFSET 4 OF B 8 Use softkeus to select e4381auj0011 Step 4 Use the following softkeys Softkey Description G B Displays the measured G B value on the screen Cp G Displays the measured Cp G value on the screen e ie D a gt o D m D Chapter 3 53 Step 1 Step 2 Step 3 Step 4 Step 5 NOTE Figure 3 11 Step 6 Getting Started Learning Basic Measurement Procedure Measuring data for SHORT correction The SHORT correction removes residual impedance in series with the DUT The procedure to measure the data for SHORT correction is described below Press the Meas Setup key Press the CORRECTION softkey The CORRECTION display page as shown in Figure 3 8 appears Use the cursor keys to select the SHORT field Connect the UNKNOWN terminal and the test fixture and short circuit the high and low test terminals Press the MEAS SHORT softkey The data for the SHORT correction i
86. ES 180 Measurement Fatlge oea tole s Dye Wet bead UPPER AERA EIS 180 AVer pl p one e ERE s eso kae a NE AERE ER AEE Mee ee e Ra nec 180 PRIS PER MOMS sai E egere Pog A sila NEUEN Ee RUE ERE EEE bid RERE 180 Tugserdelay 6mes ioeoeheRes eR RR ES ieee PROLES SERES RR E E E E 180 Measurement display ranges e eee nes 181 Available measurement ranges siesesleeeeeee e he 181 Measurement accuracy xu aces guns lanes Gob Roe d ce b CR RUE Dec CR dine BOR E De RC CR c ER Ro Rec ag 183 Supplemental Information 0 0 00 I teens 198 uo nnu cL 199 Measurement assistance functions 00 cee eee eee teens 202 General Specifications esee erne Red esee dd Ea RU RR RN Renee esd edu E el Ube E Haee CR 206 ludo p 206 Operating environment c sore kore herk hee ee be Vek ee eee mg bee eh we eck ale eb 206 13 Contents Storage enviroDIDent eoe cepe RR VERRE ERR ee REA Ru E REDE RAE E Rp EDRR 206 Lr PM va here tik beste wad E RIDA CKD Male cee ara Rie ee E 206 lr AT 206 Outer GIMENSIONS RM mm 206 EMG Loin RRERERCEREREDP eien t keh ERR RR ERE Soh Wd RREFREREEEERRODCERIT Re 210 Safety na Fis e estere e Yann puce E ORE Aa ERU Euh pude ka d YER EE breed 210 LXD sca ELT 210 Sample Calculation of Measurement Accuracy 0 c cee teens 211 When measurement parameter is Cp D or Cs D 0 0 cc cee 211 When measurement parameter is Cp Q or Cs Q sssessseeeeeeeeeee ees 211 When measurement parameter i
87. Execution of OPEN correction Execution of Cable correction for 1 MHz measurement Measurement cable length 0 m 1 m or 2 m 16048A B D D dissipation factor lt 0 5 oo oooo Accuracy of Cp Cs D G Rs Q and Rp Table 10 8 to Table 10 13 show the measurement accuracy of Cp Cs and D when D 0 1 Table 10 6 shows the formula of the measurement accuracy of G Rs Q and Rp when D lt 0 1 When 0 1 D 0 5 multiply the accuracy obtained from Table 10 8 to Table 10 6 by the coefficient in Table 10 5 Table 10 5 Disspiation factor coefficient Parameter Coefficient Cp Cs G Rs 14D D 1 D Table 10 6 Formula of the measurement accuracy of G Rs Q and Rp Parameter Formula Ge G Accuracy Ge Ce 100 ee 2 T eo f co Cx Rs Rs Accuracy Rs Ce 100 2 T o f Cx Qe Q Accuracy ser Ys EU Rp Rp Accuracy C Cp or Cs Accuracy 46 The outer conductor resistance of cable requires the following conditions 16048A B 62 mQ or below 16048D 90 mQ or below 2 If you select a secondary measurement parameter other than D calculate D pue suomneoyioeds 0L C5 en Ke O D 3 D 2 m 3 je y D E ie 2 Chapter 10 183 Table 10 7 Specifications and Supplemental Information Basic Specifications f Measurement frequency Hz C Measurement value of Cp or Cs F Q Measurement value of Q Rp Measurement v
88. Function E4981A 4268A 4288A Comparator Secondary ON OFF Can turn ON OFF Can turn ON OFF Can turn ON OFF parameter limit sorting judgement for sorting judgement for sorting judgement for range setup measurement result of measurement result of measurement result secondary parameter secondary parameter of secondary when using the when using the parameter when comparator function comparator function using the comparator function Range setup Can set low and high Can set low and high Can set low and high limit ranges of BINI to limit ranges of BINI to limit ranges of BINI BIN9 BIN9 to BIN9 AUX BIN function ON OFF Can turn ON OFF the Can turn ON OFF the Can turn ON OFF the AUX BIN sorting of AUX BIN sorting of AUX BIN sorting of comparator function comparator function comparator function Low C reject function The detection limit N A The detection limit value can be freely set value can be freely within the range of 1 to set within the range 1096 of 1 to 10 BIN count function ON OFF Can turn ON OFF the Can turn ON OFF the Can turn ON OFF the BIN counter function BIN counter function BIN counter function Resets count values Clears the count value Clears the count value Clears the count of each BIN to 0 of each BIN to 0 value of each BIN to 0 Readout of count values Reads the value of BINI Reads the value of Reads the value of to BIN9 AUX BIN BINI to BINS BINI to BIN9 and OUT OF BINS AUX BIN and AUX
89. Functions of Parts 0 0 0 cc ee ees 37 l Display Pape Area os eos rase x re et ERR E OA RES EAR OA ah oe cogs ERES Ex n yes 37 2 Comment Line Area 52a ena ee A ERE VALE FAEERE ea OE CEE aE UE 37 3 Softkey Area cento rex PREX REG SEMEN RIS RERO eS Re FER RES RU RS 37 4 Measurement Data Conditions Area llle as 38 5 Input Line Areas 4 ond ER DRRRRUEERERRERGAGUREA PORE ROSE RUE SO ERERGOEEYAP ER 38 Contents 6 System Message Area ieie Ub epe re RR URR E ER ER ER ER eie e Ebsco bes 38 7 Status Display Area ecce eres Ev EE ad ek ie Re UP RUE Re an eth I dre VA RO ere en 38 Basic Operas MEC 39 How to Use Cursor Keys los Re bERS S dance bade xr ea verbe ee bee EE ER IE bases 39 Howto Use Skip Keys iret reat irka ERRERER E HERE pe RE RRERE CREE DERE ERES 40 3 Getting Started Key Operation Basics 2 2e E seu sa opo nt be etie s dat esi pecie S Pu dre es 42 A single key press completes the operation 0 0c cee eect mh 42 A menu for item selection appears on the screen 1 eee eee ee een eens 42 A value entry screen appears isse Leer ERES UR e AE DER A Ree ee MERE om eee 42 Learning Basic Measurement Procedure 0 ccc cee teen hn 44 Connecting test DxtUre s lcenibkerp 4et5 ang SR aw EQ LRRSO VERS PRRSS PERS PERRETEYA Y 44 Setting up basic measurement conditions 0 0 0 ee 45 Executing measurement to compensate errors 51 Connecting the DUT capacitor so eso toa seda asin eI
90. GH field Step 9 Enter the limit value using the entry keys When you enter the value the softkey labels change to unit labels p n u m x1 e You can clear your selected upper limit value by pressing the CLEAR softkey e You can enter the upper limit value using the LOWx 1 softkey e You can clear all the limit values and sets the status to OFF for your selected bin by pressing the CLEAR LINE softkey Step 10 Repeat Step 6 to Step 9 using the cursor keys until you have entered the lower and upper limit values for bin 9 140 Chapter 7 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Procedure to set up secondary parameter limit range ON OFF and lower and upper limit values Step 1 Press Meas Setup Step 2 Press LIMIT TABLE softkey Step 3 Use the cursor keys to select the BIN 2nd secondary parameter field Step 4 Use the following softkeys Softkey Function ON Turns ON the bin function of secondary parameter OFF Turns OFF the bin function of secondary parameter Step 5 Use the cursor keys to select the 2nd LOW field ynseH peunsee v uo peseg uiuos 7 Step 6 Enter the limit value using the entry keys When you enter the value the softkey labels change to unit labels p n u m x1 je fe 3 o D RS fe ms en 2 o ER e e You can clear your selected lower limit value by pressing the CLEAR softkey e You can enter the lower lim
91. H the expressed number is 128 if the CHO CH1 signals are LOW and the CH2 CH7 signals are HIGH the expressed number is 3 The CH VALID signal enables disables the setting of the signals from CHO to CH7 If the CH VALID signal is LOW a trigger will set the channels of the E4981A to the channel numbers specified by the signals from CHO to CH7 The procedure to set the channel is given below Set the CH VALID signal to HIGH ee jen n 2 e O D 2 D m D k iR e o Set up a channel number using the CHO CH7 signals Set the CH VALID signal to LOW Generate a trigger Difference in execution timing depending on the channel selection method When the front panel or SCPI command is used to select a channel the selection is executed immediately On the other hand when the CHO to CH7 and CH VALID signals of the scanner interface are used the channel selection is not executed immediately after setting the signals but when a trigger is generated Chapter 9 165 NOTE Figure 9 1 Using Scanner Interface Using Multi correction Function For information on the setup timing of the CHO CH7 and CH VALID signals refer to Figure 9 3 on page 170 Measuring multi correction data Figure 9 1 shows the basic flow of measuring the OPEN SHORT LOAD correction data for the multi correction You cannot initialize the correction data for the multi correction function Even i
92. Keysight E4981A 120 Hz 1 kHz 1 MHz Capacitance Meter KEYSIGHT User Manual TECHNOLOGIES Caution A Do not exceed the operating input power voltage and current level and signal type appropriate for the instrument being used refer to your instrument s Function Reference Z N Electrostatic discharge ESD can damage the highly sensitive microcircuits in your instrument ESD damage is most likely to occur as the test fixtures are being connected or disconnected Protect them from ESD damage by wearing a grounding strap that provides a high resistance path to ground Alternatively ground yourself to discharge any static charge built up by touching the outer shell of any grounded instrument chassis before touching the test port connectors Safety Summary When you notice any of the unusual conditions listed below immediately terminate operation and disconnect the power cable Contact your local Keysight Technologies sales representative or authorized service company for repair of the instrument If you continue to operate without repairing the instrument there is a potential fire or shock hazard for the operator Instrument operates abnormally Instrument emits abnormal noise smell smoke or a spark like light during operation Instrument generates high temperature or electrical shock during operation Power cable plug or receptacle on instrument is damaged Foreign substance or liquid has fallen into the in
93. OFF Sort primary parameter for IN or OFF OUT or OFF BIN1 BIN9 all OFF leasured primary parameter is smaller thga in lower lin 4288aoe075 146 Sorting done Upper row BIN1 Lower row none GPIB out 1 Sorting done Upper row OUT Lower row SRE GPIB out _0 Sorting done Upper row AUX Lower row SRE GPIB out 10 Sorting done Upper row BIN2 w none one pper row OUT w SRE one Sorting done Upper row BIN9 Lower row none GPIB out 9 Sorting done Upper row OUT Lower row SREJ GPIB out O Sorting done Upper row AUX Lower row SREJ GPIB out 10 Sorting done Upper row OUT Lower row PLO GPIB out _0 Sorting done Upper row OUT Lower row PHI GPIB out O Chapter 7 Sorting Based on Measured Results Comparator Function Reading out Sort Count of Each BIN BIN count function ERAS Reading out Sort Count of Each BIN BIN count function You can count the number of DUTS sorted into each BIN by turning ON the BIN count function The maximum value of the count is 999999 f this value is exceeded the count will not increase but remain at 999999 it does not return to 0 When the MULTI correction function is ON channel by channel count is performed separately from the usual count total of all channels You can read out the result by using the SCPI command OD N NOTE You can read all the BIN count values with the CALCulate1 COMParator COUNt
94. OPEN field Press the ON softkey to turn ON the OPEN correction function If you change the setup of the cable length or frequency shift 1 MHz with the OPEN correction ON the warning message Need corr meas appears and the OPEN correction is automatically set to OFF Along with OPEN correction SHORT and LOAD correction is set to OFF as well If you set the OPEN correction to ON by using the above procedure when the setup of the cable length or frequency shift differs from that during measurement of the data for OPEN correction the warning message Need open meas appears Even if this warning message appears the OPEN correction is set to ON However you must again measure the data for OPEN correction to ensure accurate measurement When the measurement result becomes overload Measurement failed error is displayed and OPEN correction data is not updated Turning on SHORT correction Use one of the following two ways to set the SHORT correction to ON Measuring data for SHORT correction Execute measurement of the data for the SHORT correction When the measurement finishes successfully the SHORT correction is automatically set to ON For information about the measurement procedure for the data used in the SHORT correction refer to Measuring data for SHORT correction on page 54 Chapter 5 105 m x lt D Q E 2 Q Q ie x t Q g 2 1ueujaJnseo v 9je1noov JO uonejedaug G
95. ORT LOAD correction OFF Measurement signal monitor OFF BIN count function OFF Table 10 18 Measurement data transfer time Typical ms Interface Data using FETCh command using READ command using data buffer memory transfer one point measurement one point measurement 1000 measurement points format BUF3 Comparator Comparator Comparator Comparator Comparator Comparator ON OFF ON OFF ON OFF GPIB ASCII 1 1 3 3 202 186 ASCII 1 1 3 3 247 231 Long Binary 1 1 3 4 145 111 USB ASCII 1 1 4 4 101 94 ASCII 1 1 4 4 121 114 Long Binary 1 1 4 4 43 33 LAN ASCII 3 3 5 5 158 146 ASCII 3 3 6 6 193 181 Long Binary 5 5 7 7 105 79 pue suomneoyioeds 0L c5 en Ke O D 3 D 2 m 3 je y D E je 2 Chapter 10 201 Specifications and Supplemental Information Supplemental Information Measurement assistance functions Correction function e OPEN SHORT LOAD correction are available The OFFSET correction is available MULTI correction function OPEN SHORT LOAD correction for 256 channels The LOAD correction s standard value can be defined for each channel Cable Correction function e Cable correction is available Deviation measurement function Deviation from reference value and percentage of deviation from the reference value can be outputted as the result Comparator function BIN sort The primary parameter can
96. Otherwise you may get an electrical shock Check that the packing box or shock absorbing material used to package the Capacitance meter has not been damaged If the packing box or shock absorbing material has been damaged leave the packing box and shock absorbing material as is until other inspection items are checked as follows Check the packaged items supplied with the Capacitance meter for any damage or defects By referring to the packing list check that all packaged items supplied with the Capacitance meter have been provided as per the specified options After checking if one of the following applies contact your nearest Keysight Technologies sales and service office 1 The packing box or shock absorbing material used to package the Capacitance meter has been damaged or the shock absorbing material displays traces of where extreme pressure has been applied 2 A packaged item supplied with the Capacitance meter has mechanical damage or defects 3 A packaged item supplied with the Capacitance meter is missing 4 A fault has been detected in the subsequent operation check of the Capacitance meter If an abnormality is detected in Step 1 contact the company that transported the Capacitance meter as well as your nearest Keysight Technologies sales and service office For inspection by the transport company save the packing box shock absorbing material and packaged items as you received them Chapier 1 19 Unpacking an
97. TMC USB488 and USB 2 0 female for connection to external controller USBTMC Abbreviation for USB Test amp Measurement Class LAN interface 10 100BaseT Ethernet 8 pins two speed options Compliant with LXI standard LAN eXtensions for Instrumentation Version 1 2 Class C Auto MDIX Handler interface The input output signals are negative logic and optically isolated open collector signals Output signal Binl1 Bin9 Out of Bins Aux Bin P Hi P Lo S Reject INDEX EOM Ready for Trigger Alarm OVLD LOW C Reject or No Contact Input signal Keylock Ext Trigger Scanner interface The input output signals are negative logic and optically isolated open collector signals Output signal INDEX EOM 204 Chapter 10 Specifications and Supplemental Information Supplemental Information Input signal Ch0 Ch7 Ch valid Ext Trigger Measurement circuit protection The maximum discharge withstand voltage where the internal circuit remains protected if a charged capacitor is connected to the UNKNOWN terminal is illustrated below NOTE Discharge capacitors before connecting them to the UNKNOWN terminal or a test fixture Table 10 19 Maximum discharge withstand voltage typical Maximum discharge withstand voltage Range of capacitance value C of DUT 1000 V C lt 2uF N2 C V C 2yF Figure 10 12 Maximum discharge withstand voltage typical pue suomneoyioeds 0L c5 en Ke 2 D 3 D 2 v z
98. ace Performs a self test Local Lock key Locks and unlocks hard keys and softkeys on the front panel 5 Cursor keys Keys used to move the field select cursor from field to field on a displayed page When the cursor is moved to a certain field that field changes to an inverse video image of the original field The cursor can only be moved from field to field For the skip key refer to the How to Use Skip Keys on page 40 6 Entry keys Keys used to enter numeric data into the E4981A The entry keys comprise the digits O to 9 a period and a plus minus sign Entered values are displayed on the input line second line from the bottom of the LCD screen and pressing the softkey terminates numeric input The plus minus key deletes the last character of the input value 7 Preset key A key used to return the Capacitance meter to the initial setup state There are three methods for initialization For details refer to Initializing the Instrument on page 45 8 Trigger key A key used to manually trigger the E4981A when it is set to the manual trigger mode 9 UNKNOWN terminals These are the UNKNOWN terminals used to connect a four terminal pair test fixture or test leads for measuring the device under test DUT When using a four terminal pair test fixture or test leads with a stopper remove the stopper or the bumper of the E4981A 32 Chapter 2 CAUTION NOTE NOTE Overview Front Pa
99. age 77 Chapter 4 63 B QOO D Sa a5 zo e es no v 20 an o D m Lo Bg lt 5 Table 4 2 Table 4 3 Setting up Measurement Conditions and Display Selecting Measurement Range Selecting Measurement Range Setting measurement range to be automatically selected auto ranging Two modes can be used to select the measurement range as shown in Table 4 2 To enable automatic selection select the auto range mode Measurement range mode Mode Function overview Advantage Disadvantage The instrument You do not need to The measurement time automatically selects a select the measurement is longer due to the Auto range proper measurement range range ranging time auto selection depending on the value of the DUT and performs measurement Hold Measurement is performed No ranging time is You need to select a with a fixed measurement required proper range fixed range range regardless of the depending on the value manual selection value of the DUT of the DUT Selecting your desired measurement range hold range The selectable measurement ranges are shown in Table 4 3 As this table shows selectable measurement ranges differ depending on the measurement signal frequency Therefore if a newly selected measurement frequency conflicts with the current measurement range setting the setting is automatically changed to cover the allowable range Selectable measure
100. al 24981 aue0036 1 Power switch Used for choosing between power on and off states of the E4981A When turned on the switch lights up in yellow green and all operating voltages are applied to the instrument When turned off the switch lights up in orange and no operating voltages are applied to the instrument 2 LCD The Liquid Crystal Display LCD displays measurement results test conditions etc NOTE Occasionally there are missing pixels or constantly lit pixels but this is not a malfunction and does not affect the performance of your product 3 Softkeys Five softkeys are used to select measurement conditions and parameter functions Each softkey has a softkey label along its left side Chapter 2 31 Io l9 lt 0 5 lt D NOTE Overview Front Panel Names and Functions of Parts 4 Menu keys Menu selection keys are used to access the corresponding selection of instrument controls Table 2 1 Display Format key Displays measurement results and selections Meas Setup key Sets measurement conditions a correction function contact check function and limit values for BIN sorting Recall A key Recalls the setting information on internal memory 0 Recall B key Recalls the setting information on internal memory 1 Save Recall key Saves and recalls the setting information Saves measurement results and screen images System key Sets the system Sets the GPIB LAN USB interf
101. ally used to connect the DUT to the E4981A Use the test fixture that is suitable for the shape of the DUT Figure 3 2 shows an example of making a connection by using the 16034G which is suitable for measuring chip capacitors Figure 3 2 Connecting test fixture 16034G Turn the lever clockwise UNKNOWN terminal Test fixture 4288a0e024 44 Chapter 3 Getting Started Learning Basic Measurement Procedure Setting up basic measurement conditions This section describes how to set up basic measurement conditions for capacitor measurement For an actual measurement for example measurement that provides better accuracy or measurement based on measurement time you need to set up measurement conditions that are appropriate to the task not necessarily those described here Initializing the Instrument This section describes how to return the settings of the E4981A to their preset values Step 1 Press Preset key Step 2 Use the softkeys to select one of the following four default states Table 3 1 Four default states of E4981A and how it is initialized Default state How the instrument is initialized CLEAR SETTING When you initialize the instrument into this state all basic parameters configurable through the front panel and SCPI commands are cleared You get the same result by issuing the SYST PRES command CLEAR SET amp CORR When you initialize the instrument into this state calibration data listed in
102. alue of Rp Q De D accuracy 46 Accuracy when ambient temperature exceeds the range of 18 C to 28 C Typical When the ambient temperature exceeds the range of 18 C to 28 C multiply the accuracy obtained above by the coefficient shown in the table below Tempature coefficient Coefficient 0 C ambient temperature lt 8 C 3 8 C ambient temperature lt 18 C 2 18 C ambient temperature 28 C 1 28 C lt ambient temperature lt 38 C 2 38 C lt ambient temperature lt 45 C 3 When an alternating current magnetic field is applied to the instrument Multiply the accuracy obtained in Table 10 8 through Table 10 6 1 B 240 5 K B Magnetic flux density Gauss Vs Measurement signal level V Cr Measurement range F Cx Measured value of capacitance Cp or Cs In tables Table 10 8 to Table 10 13 K is defined as follows Cxs Cr K 1 Vs Cr Cx Cx gt Cr K 1 Vs where Cx is measured value of capacitance Cp or Cs Cr is a measurement range and Vs is a measurement signal level V 184 Chapter 10 Table 10 8 Specifications and Supplemental Information Basic Specifications Measurement accuracy of Cp Cs measurement frequency 120 Hz Cp Cs 4c MEAS TIME N 10 nF 22 nF 47 nF 100 nF 220 nF 470 nF 1 uF 2 2 uF 4 7 uF 10 uF 22 uF 47 uF 100 uF 0 055 0 030 K
103. andard LAN eXtensions for Instrumentation version 1 2 Class C Connector type 8 pin RJ 45 connector Compliance Standard 10Base T 100Base TX Ethernet automatic data rate selection 4 External Trigger Input Connector The BNC connector to input the positive negative TTL pulse to trigger the E4981A with external trigger signals The trigger mode must be set to EXTernal 5 Serial Number Plate The seal showing the product s serial number 6 Power Cable Receptacle to LINE The receptacle outlet to which the power cable is connected To connect the device to a power source outlet use the supplied three prong power cable with a ground conductor The plug attached to the power cable on the power outlet side or device side of the cable serves as the E4981A s disconnecting device device that cuts off the power supply When the power supply must be cut off to avoid such danger as electric shock pull out the power Chapter 2 35 Io l9 lt 0 lt D Overview Rear Panel Names and Functions of Parts cable plug on the power outlet side or device side of the cable For the procedure for turning off the power in normal use see the description in 1 Power switch on page 31 For more on the power supply see Verifying the Power Supply on page 25 7 Fan The cooling fan for controlling the temperature inside the E4981A This fan extracts heated air from inside the Capacitance meter 8 Scan
104. anel Offset correction Can be turned ON OFF N A Can be turned for both the primary and ON OFF for both the secondary parameters primary and simultaneously secondary parameters simultaneously Scanner multi ON OFF Can be turned ON OFF Can be turned Can be turned ON OFF Channel setup 256 channels are available 64 channels are available option 64 channels are available LOAD standard correction method setup A single reference value is shared by all of the channels or a different reference value is used for each channel A single reference value is shared by all of the channels or a different reference value is used for each channel A single reference value is shared by all of the channels or a different reference value is used for each channel Cable Correction Correct the error of individual test cable Available N A N A Appendix B 227 EN N op fee gt EN N 00 jee gt r 3 m EN fee gt n EI ie x 3 o m ie 2 h o mi pu D Eod o 9 2 Q Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A Function E4981A 4268A 4288A Trigger Trigger mode Selectable from the Selectable from the Selectable from the internal trigger INT internal trigger INT internal tr
105. apter 7 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Setting up limit ranges Notes on setup o If you set up the upper limit value to a value equal to or less than the lower limit value the limit range is not used This operation is equivalent to setting the limit range to OFF o If BINs overlap the resulting measurement is sorted into the BIN of the smallest number refer to Figure 7 5 Sorting judgment flow on page 146 Therefore you need to set up the limit ranges starting from the narrowest to the widest as shown in Figure 7 2 o For the tolerance mode the reference value is not required to be within the limit range between the lower limit value and upper limit value o Gaps between the limit ranges are allowed Therefore you can set up the limit ranges as shown in Figure 7 3 Figure 7 3 Example of gap between limit ranges 0 97nF 0 98nF 0 99nF 1nF 1 01nF 1 02nF 1 03nF 1 y 0 2 OhF 0 02nF BIN1 amp e 9 Inclusive 3 2 i i f 0 03nF 0 02nF l o Exclusive BIN2 o _e i i 196 i 3 CO O1nF l 0 03nF BIN3 o_o 0 9 4288aoe076 Table 7 3 Lower and upper limit values of limit ranges for Figure 7 3 Tolerance mode reference value InF Absolute mode Absolute Percent Lower Upper Lower Upper Lower Upper limit value limit val
106. arameter lower limit not reached signal When the lower limit of BIN1 BIN9 is not reached this becomes LOW Secondary parameter out of limit signal If the secondary parameter is out of the limit this becomes LOW Trigger acceptable signal When a trigger signal acceptable state is established this becomes LOW When the handler receives this signal an external trigger signal can be input Low C reject detection signal occurs at 120Hz 1kHz and 1MHz and No Contact is available at 120Hz and 1kHz For Low C Reject if the measured Cp or Cs result is equal to or less than the preset boundary value percentage of the measurement range Pin 23 value becomes LOW For No Contact detection if the measurement value becomes very less i e 9 99E37 Pin 23 becomes LOW Measurement impossible signal If measurement is impossible in the analog measurement part overload this becomes LOW 25 KEY LOCK Input Key lock signal If you set this signal to LOW the front panel keys of the E4981A are disabled 26 reserved Not used in the current release Do not connect anything 27 28 EXT DCVI External dc voltage for judgemental system is not used in E49814A as PullUp resistors are not mounted inside the E4981A 29 ALARM 30 INDEX 31 EOM Output Error occurrence signal If a problem an error in the self test result power supply interruption malfunction of a specific circ
107. ary The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment Such noncompliance would also violate safety standards of design manufacture and intended use of the instrument Keysight Technologies assumes no liability for the customer s failure to comply with these precautions The E4981A complies with INSTALLATION CATEGORY II as well as POLLUTION DEGREE 2 in IEC61010 1 The E4981A is an INDOOR USE product The LEDs in the E4981A are Class 1 in accordance with IEC60825 1 CLASS 1 LED PRODUCT e Ground the Instrument To avoid electric shock the instrument chassis and cabinet must be grounded with the supplied 3 pole power cable s grounding prong DO NOT Operate in an Explosive Atmosphere Do not operate the instrument in the presence of inflammable gasses or fumes Operation of any electrical instrument in such an environment clearly constitutes a safety hazard e Keep Away from Live Circuits Operators must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel only Do not replace components with the power cable connected Under certain conditions dangerous voltage levels may remain even after the power cable has been disconnected To avoid injuries
108. asurement cable lengths 0m 1m 2m Measurement time selection 5 speeds Measurement time mode N 1 2 4 6 8 For information on the measurement time in each mode refer to Measurement time on page 199 Measurement range selection Auto Hold Measurement range Measurement 10 nF 22 nF 47nF 100nF 220nF 470nF IRURE luF 22uF O47 UF 10 uF 22 uF 47 uF 100uF 220gF 470gF 1 mF Measurement 100pF 220pF 470pF InF 22nF 47nF nea frequency 10 nF 22 nF 47nF 100nF 220nF 470nF luF 22uF 47pF 10 uF 22 uF 47 uF 100 uF Measurement 1 pF 2 2 pF 4 7 pF 10 pF 22 pF 47 pF signal frequency 100 pF 220pF 470 pF 1 nF 1 MHz For information on measurable range in each measurement mode refer to Available measurement ranges on page 181 Averaging Range 1 256 measurements Resolution 1 Trigger mode Internal trigger Int Manual trigger Man External trigger Ext GPIB USB LAN trigger Bus Trigger delay time Range 0 1 s Resolution 0 1 ms 180 Chapter 10 Table 10 1 Table 10 2 Specifications and Supplemental Information Basic Specifications Measurement display ranges Table 10 1 shows the range of the measured value that can be displayed on the screen Allowable measured value display range Parameter Measurement display range Cs Cp 1 000000 aF 999 9999 EF D 0 000001 9 999999 Q 0
109. be sorted into 9 BINs OUT_OF_BINS AUX_BIN and LOWC_OR_NC The secondary parameter can be sorted into High In and Low Limit setup An absolute value deviation value and deviation value can be used for setup Bin count Countable from 0 to 999999 Low C reject function Extremely low measured capacitance values can be automatically detected as measurement errors Contact Check The contact check functions is available on 120 Hz 1 kHz Signal Level Compensation SLC function SLC function compensates the voltage drop by resistance inside the E4981A and the extension cable under the following frequencies and ranges Measurement Cable 16048A or 16048D Operating measurement range setting for 1m or 2m cable length is e When the measurement frequency is 120 Hz 220 uF range 470 uF range 1 mF range e When the measurement frequency is 1 kHz 22 uF range 47 uF range 100 UF range 202 Chapter 10 Specifications and Supplemental Information Supplemental Information Signal Level Error 120 Hz Cdut uF Signal Level Error 1 kHZ i SESE Me cee Oe zu See Se cr Se xm VN ec HAAR Cdut uF Measurement signal level monitor function e Measurement voltage and measurement current can be monitored Level monitor accuracy typical 396 1 mV Data buffer function Up to 1000 measurement results can be read
110. c iiteraria e e ea de ves ek eae ded or soe eoe pa 19 Environmental Requirements leeeeeeeeeeee RR e eee nea 20 Operating Environments oss eole eeik RBS RR EE Y NITE eb e UTERE eeu bx ia 20 Ventilation Requirements llle Im e 21 Protection Against Electrostatic Discharge ESD 0 00 eee eee 22 Ensuring Adequate Free Space around the Capacitance meter for Immediate Disconnection of the Power Cablein Case of Emergency siecle ed hee i UE GR PAURA bane ab ba UNE beeen Sok beeches 22 How to Remove the Handle 1 0 II eens 23 Caution when Using the Handle 0 0 cece eee enna 24 Preparations before Use esee Ret Rose diee Rep doe bb dor gb oe bp gub we d Rice a dec well 25 Verifying the Power Supply 5 isses tek bee bee acne be REESE TA EE Euh 25 Setting up the P se s ricibsrirpsi nenes hgh aia es BERRY LERRA ERERENBRERC UE RT ERE NE MERE EE 25 Verifying and Connecting the Power Cable 0 0 0 0 eee eee eee 26 Starting the PA081A prer cues aa hub eea REP ERE EUG E duda Rd RR Rok Gib dun le asda RC C 27 Turning the Power ON and OFF uususeseeeeeeeeeeee e re 27 Disconnecting from the Supply Source nre 28 2 Overview Product Introduction esee eeni eree ee rers 30 Front Panel Names and Functions of Parts 0 0 00 ee eee teen nee eens 31 1 Power switche zie RRDIRDe CR Rb ence Boia wena a eas POE bb aa Rw Bae E RA 31 DN OD MC rr creTccUEULECD 31 SD OOUKCYS oco ge Qed ed eUpS QUSS
111. correction When the measurement finishes successfully the LOAD correction is automatically set to ON For information about the measurement procedure for the data used in the LOAD correction refer to Obtaining measuring data for LOAD correction on page 112 Setting up ON OFF directly Use the following procedure to set the LOAD correction to ON OFF Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the LOAD field Press the ON softkey to turn ON the LOAD correction function If you change the setup of the cable length or frequency shift 1 MHz with the LOAD correction ON the warning message Need corr meas appears and the LOAD correction is automatically set to OFF Along with LOAD correction OPEN and SHORT correction is set to OFF as well 106 Chapter 5 Preparation for Accurate Measurement Executing Correction Turning ON OFF Correction Functions If you set up the LOAD correction to ON using the above procedure when the setup of the cable length or frequency shift differs from that during measurement of the data for LOAD correction the warning message Need load meas appears Even if this warning message appears the LOAD correction is set to ON However you must again measure the data for the LOAD correction to ensure accurate measurement When the measurement result becomes overload Measurement failed error is displayed and LOAD correction data is not updated Turning
112. ct the DEV B field Step 7 Select the deviation mode for the primary parameter using the softkeys described in Step 5 Chapter 4 75 B On D 3 2 25 zo e es no v 20 Qa ge D m Lo Bg lt 5 Setting up Measurement Conditions and Display Setting Up Display Difference between deviation measurement mode and offset correction The offset correction function is similar to the deviation measurement mode with respect to the behavior when a predefined value is subtracted from the measured value On the other hand the two functions differ as explained below Purpose Effect on comparator Deviation measurement mode Used when calculating the deviation of the measured value from any given value for example nominal value Not affected The absolute value of the measurement result is always used for sorting judgment Offset correction Used to bring the measured value close to any given value for example to compensate variations of the measured value among instruments for the same DUT Affected Values compensated by this function are used for sorting judgment If the deviation measurement mode and the offset correction are both ON the offset correction is executed first and then using the result as the measurement result the value calculated is displayed Refer to Figure 5 1 Data processing flow on page 103 76 Chapter 4 NOTE Table 4 4
113. d when nothing is connected to the UNKNOWN terminal This is normal operation An overload is often detected by the E4981A when nothing is connected to the UNKNOWN terminal Beeping persists when turning ON the comparator function o Check if the limit range is set up properly When the beep is set up to sound when the comparator function is ON initial setup the beep sounds on every completion of measurement if the limit range is set up improperly 220 Chapter 12 Troubleshooting Check Items When Trouble Occurs The front panel keys are unavailable o Check if the keys are locked When the keys are locked LOCK is displayed in the status display area in the lower right corner of the screen Press the Local Lock key to unlock the keys NOTE If the keys have been locked through the handler interface you cannot unlock them by using the front panel keys Set the KEY LOCK signal of the handler interface to HIGH o Check if the instrument is in the remote mode If the E4981A is in the remote mode RMT is displayed in the status display area in the lower right corner of the screen Press the Local Lock key to clear the remote mode The measured value is abnormal n2 x je en 7 D m je je A 2 o The measurement of correction data may have failed Measure the correction data again For how to measure the correction data refer to Obtaining correction Data on page 108
114. d Preparation Environmental Requirements Environmental Requirements Set up the E4981A where the following environmental requirements are satisfied Operating Environments Ensure that the operating environment meets the following requirements Table 1 1 Temperature 0 C to 45 C Temperature range at calibration 23 C 5 C lt 1 C deviation from the temperature when performing calibration Humidity lt 40 C no 15 to 85 RH condensation Altitude 0 to 2 000 m 0 to 6 561 feet Vibration Max 0 5 G 5 Hz to 500 Hz CAUTION The environmental requirements listed above are NOT for the specifications and measurement accuracy of the E4981A but for its operating environment 20 Chapter 1 Figure 1 1 Unpacking and Preparation Environmental Requirements Ventilation Requirements To ensure that the safety requirements the specifications and the measurement accuracy of the Capacitance meter are met you must maintain the environmental temperature to within the specified range by providing an appropriate cooling clearance around the Capacitance meter or for the rack mounted type by forcefully air cooling inside the rack housing For more information on environmental temperatures that satisfy the specifications and measurement accuracy of the Capacitance meter see Chapter 10 Specifications and Supplemental Information on page 177 The Capacitance meter conforms to the requirements of the safety sta
115. d character data A character data element has been recieved where the E4981A does not accepts any character data element Invalid string data Character string data are expected but the string data received are invalid for some reason Refer to IEEE488 2 7 7 5 2 For example the END message is received before the end quotation mark character appears 242 Appendix D 161 171 213 224 46 43 109 250 83 120 128 Error Messages Error messages alphabetical order Invalid block data Block data are expected but the block data received are invalid for some reason Refer to IEEE488 2 7 7 6 2 For example the END message is received before the length of the block data is reached g m m je m z D n n D Q D n Invalid expression The equation data element is invalid Refer to IEEE488 2 7 7 7 2 For example parentheses are not paired or a character violates the standard Init ignored Another measurement has been being executed and the measurement start request CINITiate IMMediate command has been ignored Illegal parameter value The parameter recieved is not correct For example though a correct program message was CALC1 FORM CP a wrong program message CALC1 FORM RP was received L LOAD measurement incomplete This error occurs when the cable correction LOAD measurement is incomplete M Measurement failed A measurement failure has occurred
116. de Functional Description You have to specify the medium type of the destination or source before saving or recalling instrument configurations To select the medium mode Press Save Recall Use the cursor keys to select the MEDIA field Select the medium mode by pressing the appropriate softkey Softkey Description INT Uses the internal memory as the destination or source Once you have selected this mode the register numbers in the No field change to 0 through 9 EXT Uses USB memory as the destination or source Once you have selected this mode the register numbers in the No field change to 10 through 19 B On D o 25 zo e es Qo v 30 Qa og m Lo Bg lt 5 PE Choosing a Register Number Functional Description You have to choose one of the register numbers in the No field before saving or recalling instrument configurations Available choices include 0 through 9 when the medium mode is INT internal memory or 10 through 19 when the medium mode is EXT USB memory Chapter 4 91 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function To choose a register number and save recall the configurations Step 1 Press Save Recall Step 2 Use the cursor keys to select the No field of your desired register number Step 3 Select your desired action by pressing the appropriate softkey Softkey Description RECALL Recalls the
117. dicates normal operation Normal operation is confirmed by the self test if no error message appears Turning the Power OFF Follow the method below to turn the power OFF Press the power switch in the lower left part of the front panel NOTE Do not turn the power OFF while saving into or recalling from the internal memory of the E4981A or the USB memory Doing so may clear the contents from the memory Chapter 1 27 NOTE Unpacking and Preparation Starting the E4981A Disconnecting from the Supply Source The plug attached to the power cable on the power outlet side or device side of the cable serves as the disconnecting device device that cuts off the power supply of the E4981A When the power supply must be cut off to avoid such danger as electric shock pull out the power cable s plug on the power outlet side or device side of the cable To allow this operation to be performed smoothly be sure to follow the guidelines in Ensuring Adequate Free Space around the Capacitance meter for Immediate Disconnection of the Power Cable in Case of Emergency on page 22 When turning the power OFF under normal circumstances always follow the methods described in Turning the Power OFF on page 27 28 Chapter 1 M IM AQ ZC Overview This chapter provides the basic procedures for operating the E4981A and describes names and functions of the front panel rear panel and screen display 29
118. displaying Setting up correction Data on page 119 Chapter 9 167 ee jen n 2 e O D 2 D m D k iR e o Using Scanner Interface Input Output Signal Pin Assignment ESS ss Input Output Signal Pin Assignment Figure 9 2 shows the pin assignment of the input output signals of the scanner interface connector Table 9 1 gives a description of the input output signals NOTE A slash symbol preceding signal names means that they are negative logic active low Figure 9 2 Pin assignment of the scanner interface connector A9Qq 1X3 Ql1VA H9 NONWOS 9IXL1 1X3 e4981aue0016 168 Chapter 9 Using Scanner Interface Input Output Signal Pin Assignment Table 9 1 Description of input output signals of the scanner interface Pin number Signal name Input output Description 1 CHO Channel number selection signal 8 bit binary input Selects the correction data for each channel of the 2 CH2 scanner The most significant bit is CH7 pin number Input 11 The least significant bit is CHO pin number 1 3 CH4 4 CH6 Channel number identification signal If the CH_VALID signal is LOW a trigger will set the channels of the a ISHEVALID Topit E4981A to the channel numbers specified by the signals from CHO to CH7 Analog measurement end signal When an analog measurement
119. e Use the cursor keys to select CC1 TH2 field TH2 is a parameter proportional to the contact Chapter 4 77 B On D Sa 25 zo e en m Qo v 230 aw g m 89 Bg lt 5 rPe Step 8 Setting up Measurement Conditions and Display Setting up Contact Check resistance of Lp or Lc Use the softkeys or entry keys to enter the TH2 value according to table Table 4 4 When data is entered with the entry keys the softkeys change to units labels m x1 Softkey INCR INCR DECR DECR 78 Description Increments the threshold value as 0 10m 20m 50m 100m 200m 500m 1 Increments the threshold value in steps of 10 Decrements the threshold value in steps of 10 Decrements the threshold value 1 500m 200m 100m 50m 20m 10m 0 Chapter 4 Setting up Measurement Conditions and Display Setting Up Condition To Make A Beep Setting Up Condition To Make A Beep The condition to make a beep sound differs depending on the beep mode as shown in Table 4 5 Table 4 5 Condition to make a beep Mode Condition to make a beep Off Never makes a beep When the sorting judgment result of the Fail When wrong key operation is performed comparator is OUT OF BIN AUX BIN No contact or OVLD When an error alarm or other message is outputted When the sorting judgment result of the comparator is from BIN1 to BIN9 Pass Setup procedure Step 1 Press Meas Set
120. e effective digits SN NNNNNNNNNESNN setting is on FORMat ASCii LONG ON S 4 N 0 to 9 E exponent character Data B Outputs the measurement data for the secondary parameter The Data B field uses the following two different fixed length ASCII formats When the effective digits SN NNNNNESNN setting is off FORM ASC LONG OFF S 4 N 0 to 5 E exponent character When the effective digits SN NNNNNNNNNESNN setting is on FORM ASC LONG ON S 4 N 0 to 9 E exponent character Status Represents the measurement result status by using one of the following status values 0 Measurement successfully completed 1 Overload 2 Low C or No contact The Status field uses the following two character fixed length ASCII format SN S N 0 to 2 Chapter 4 97 B On D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 NOTE NOTE Example 4 1 Step 1 Step 2 Step 3 Step 4 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function If the value is 1 the measurement data is 9 9E37 if the value is O or 2 the actual measurement data is output The data buffer memory contains a measurement result with no data as represented by the status value of 1 but it is excluded when the data is saved into USB memory Bin No IN OUT Represents the bin sorting results as well as IN OUT evaluation r
121. e a Query that requests an ambiguous response has not yet been completely executed when a different Query is received Refer to IEEEA88 2 6 5 7 5 7 g m m je m z D n n D Q D n R Reference Measurement Aborted This error occurs when REF data measurement is aborted REF measurement incomplete This error occurs when the cable correction REF measurement is incomplete S Store failed This error occurs when external mass storage device fails or internal FLASH ROM hardware fails Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device Syntax error There is a command or data type that cannot be recognized For example in the program message SYST PRES a colon is inserted by mistake to give SYST PRES Suffix too long The length of suffix is long Suffix not allowed A suffix is added to a numeric value element that does not permit a suffix String data error An error not included in the error numbers between 151 and 159 has occurred during the syntax analysis of a string data element String data not allowed A string data element has been received where the E4981A does not accept any string data element For example a parameter must be enclosed with double quotation marks but they are missing T Too many digits The number of digits of the mantissa of the decimal value data element exceeds 255 except for
122. e E 1 illustrates the circuit model of impedance measurement using the E4981A Vs is the measurement power supply voltage and Rs is the output resistance of the E4981A When voltage applied to a DUT is V and current flowing through the DUT is I impedance Z is expressed by the equation Z V I Z consists of a real part and an imaginary part Figure E 2 shows the vector diagram of impedance Vector Diagram of Impedance Complex Axis R IX x VW J P Eee Z R iX 2126 X A we d a R Z cos p m X IZI sing a y VB a pleas apis Real Axis B tan m gt LC00e3012 Symbols used in Figure E 2 have the following meanings R Resistance X Reactance Iz Absolute value of impedance 0 Phase of impedance Another way to express impedance Z is the use of admittance Y The relationship between admittance Y and impedance Z is Y 1 Z 250 Appendix E Figure E 3 Figure E 4 Figure E 5 Technical Information Measurement Principle Relationship between Impedance and Admittance R o Y 52 ye 2 Z R jx Ri x n 4 or 1 1 aS zz Yi zCc8 L7o03008 For a parallel connection using admittance Y is more convenient Vector Diagram of Admittance 1 1 Yo 2 yu x 2 Z R jX R X R X or 1 1 Y Z izl Ci lex Axi R T i 2 omplex AAA E jRX E RX R X j L Z i qd CL R jx R X R X Y 8 B
123. e LOAD correction is divided into the data for normal operation and the data of each channel 256 channels for multi correction as shown in Figure 5 4 Each set of data consists of the correction data cable length standard definition value and frequency shift only for 1 MHz Chapter 5 113 m x lt D Q E 2 Q Q ie x t Q ze e 1ueujaJnseo v 9je1noov JO uonejedaug G Preparation for Accurate Measurement Executing Correction Obtaining correction Data Figure 5 4 Multi correction OFF e4981aue0041 Measured data Structure of data for LOAD correction Multi correction ON 120 Hz correction data 120 Hz cable length 120 Hz standard definition value 1 kHz correction data 1 kHz cable length 1 kHz standard definition value 1 MHz correction data 1 MHz cable length 1 MHz standard definition value 1 MHz frequency shift 120 Hz correction data 120 Hz cable length 120 Hz standard definition value 1 kHz correction data 1 kHz cable length 1 kHz standard definition value 1 MHz correction data 1 MHz cable length 1 MHz standard definition value 1 MHz frequency shift 120 Hz standard definition value 1 kHz standard definiton value 1 MHz standard defition value For channel 0 For channel 255 For all channels The data for the LOAD correction can only be measured at the measurement frequency set by the user 120 Hz 1 kHz or 1 MHz at the time of execution The re
124. e cursor keys to select the No field 0 through 9 for your desired register Step 5 Press RECALL softkey to recall configurations from the internal memory Using a Hard Key to Recall States from the Internal Memory You can also recall configuration states from a particular register in the internal memory by pressing one of the following hard keys Hard key Description Recall A Recalls configuration states from register 0 0 in the No field Recall B Recalls configuration states from register 1 1 in the No field Saving Recalling Instrument Configuration States into from USB Memory Figure 4 6 shows the fields available on this page along with the softkeys corresponding to them Figure 4 6 CATALOG page when saving instrument configurations into USB memory SAVE EXT DATA CONTENT SAVE T Lp Rde Neas DISPLAY Device Ext Device Ext B Use Softkeys to select Field Monitor e4980aue1 141 94 Chapter 4 Step 1 Step 2 Step 3 Step 4 Step 5 NOTE Step 1 Step 2 Step 3 Step 4 Step 5 NOTE Step 1 Step 2 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Functional Description When you save configuration states into USB memory they are saved as predefined files in predefined locations You cannot manually define the file names or locations Eac
125. ed OFF WARNING Need load meas This is displayed when you turn ON the LOAD correction from the front panel although the setups of the cable length and measurement frequency shift 1 MHz differ from those when measuring setting up the LOAD correction data In this case the LOAD correction is turned ON but you need to measure the LOAD correction data again for accurate measurement WARNING Need open meas This is displayed when you turn ON the OPEN correction from the front panel although the setups of the cable length and measurement frequency shift 1 MHz differ from those when measuring setting up the OPEN correction data In this case the OPEN correction is turned ON but you need to measure the OPEN correction data again for accurate measurement WARNING Need short meas This is displayed when you turn ON the SHORT correction from the front panel although the setups of the cable length and measurement frequency shift 1 MHz differ from those when measuring setting up the SHORT correction data In this case the SHORT correction is turned ON but you need to measure the SHORT correction data again for accurate measurement WARNING Out of limit This is displayed if the correction data is out of the valid range when measuring the correction data The valid range for each type of correction is as follows S m m je m D n n D Q D n Type of correction Valid range OPEN correction TYI lt 20 uS
126. edenn ee m nea 82 Functional Description icc sate ddd kk ee AG DALE Shades be ena de het ke dee REEE eris 82 Configuring the System Date sssi drer tastene tee I e enna 83 Functional Description eee esae Weser Y edere or iere doe We rl ais Spe RU ete de rere ee 83 Configuring the GPIB Address llsleleseeeeeeeeeee teen enna 85 Functional Description 4 iseeze sek hee LIRE EERSRRE REG P RR re REGE bre badge ps 85 To configure the GPIB address lt ccs Lenten een S 85 Configuring the LAN IP address 0 2 ec I nea 86 Functional Description stud ado eR EELEE ERE Ea RR EREET Qu br eae esc eel ee 86 To automatically obtain the IP address nuunuu annanru eh 86 To manually configure the IP address 0 2 2 Lecce eee eee 86 Checking the LAN connection Status ccce eee eeeeeeeeeeesee seen 87 To reconnect to the network sss m mee 87 Saving Recalling Instrument Setup State save recall function 0 0 0 0 88 Overview of Save Recall Functionality llleleeeeeeeeeee e 88 Saving Recalling Instrument Configuration States 0 0 0 2 eee ce eee 90 Mediu Mode eere tacet roe Foe Padus i eed Gul RR E unc Gi RR ba eda RC ERR 91 Choosing a Register Numbet s che octet eee EE edd ek aden ba nes SE bee de 91 Memory Status Information 0 0 ce eet ene ene e eens 92 Comment Information sssri e eee eee eee ga rone order end bare dae e hee d aea dece 93 Saving Recalling Instrument Configuration S
127. eld Step 3 Use the numeric keys or following softkeys Softkey Description INCR Increments the measurement time DECR Decrements the measurement time 66 Chapter 4 Setting up Measurement Conditions and Display Selecting Cable Length Selecting Cable Length Set up the length of the measurement cable to compensate errors due to the extension of the measurement cable The E49814 lets you select the length from 0 m m or 2 m depending on the measurement cable you use 0m When you do not use the test lead in other words when you connect the test fixture directly to the UNKNOWN terminal 1m When you use the Keysight 16048A B Keysight test lead 2m When you use the Keysight 16048D test lead Setup procedure For details on setup procedure refer to Setting up cable length on page 50 NOTE Cable length information is saved in internal FLASH memory when power is OFF with backup function enabled B On o0 Sa 25 zo e es no v 20 Qa ge D m 89 Bg lt 5 Chapter 4 67 Setting up Measurement Conditions and Display Setting Up Averaging Count Setting Up Averaging Count Functional Description The averaging feature of the E4981A allows you to obtain moving average values of successive measurement results You can specify the averaging factor within the range of 1 to 256 in steps of 1 Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor keys to select AVG field
128. ent line Inputting Comment line You can enter a comment in the comment line by using the softkeys to enter letters and the entry keys to enter numbers from 0 through 9 and period Your entered comment is saved in the internal memory or external USB memory along with the control settings of the E4981A When you load the control settings your saved comment is loaded as well The comment can be up to 30 characters in length However only the first 22 characters are displayed in the area Until you enter a comment into the comment line the default text USER COMMENT appears in the comment line You can also use the DISPlay LINE command to enter ASCII characters into the comment line To enter a comment into the comment line Press Meas Setup Press MEAS SETUP softkey Using the cursor keys select the USER COMMENT field If there is already a comment select that comment field To input a letter use the following softkeys to cycle through letters in alphabetical order and then select your desired letter Softkey Description NEXT Displays the next letter to the letter currently displayed in the ADD CHAR softkey PREV Displays the previous letter to the letter currently displayed in the ADD CHAR softkey To input a number use the entry keys Press the ADD CHAR softkey Your selected single character appears in the input line area Repeat Step 4 and Step 5 to input subsequent characters Press the ENTER s
129. ent range 181 Average key 68 Averaging How to set up 68 Range 180 B Basic operations 44 Beep 79 80 Beep Tone 81 BIN count On Off 147 Bk Sp key 42 BNC external trigger 127 Cc Cable Correction How to obtain 122 Overview 104 Cable length How to set up 50 Calibration Recommended Period 218 Capacitance characteristics 252 Checking the Shipment 19 Cleaning 217 Clear Limit range 136 Remote mode 221 Comment Line 37 Comment line 61 Comparator BIN count On Off 147 Limit range Clear 136 Designation method 137 Primary parameter BIN1 9 140 Secondary parameter 141 On Off 135 Overview 134 Sorting Read out Sorting result 145 Sorting result Handler output 150 Comprtr key Aux 142 Count 147 Limit Clr 136 AMode 137 Pri 140 Sec 141 On Off 135 Configuration Save 88 Contact check 77 THI 77 TH2 77 Correction How to turn on off correction 105 Overview 102 Correction Data How to check 119 How to obtain 108 Correction Mode 117 Cp 60 251 Cs 60 251 D D 60 251 Data processing flow 103 Data Save 88 Delay key 69 Delay time How to set up 69 Range 180 AMode key 74 Deviation measurement mode 74 DHCP 86 Disp Mode key FixMsd 74 On Off 73 Display Deviation measurement mode 74 Fixed point display 73 On Off 73 Display time 200 E EMC 210 Eng key 42 Index 259 Index Enter key 42 Equivalent circuit model 253 Error m
130. ent range mode auto range mode e Measurement time mode 8 e Output impedance of measurement signal source 20 Q For other settings such as averaging and trigger delay the measurement conditions set up at execution are used for measurement Measurement procedure For more information about the measurement procedure for the data used in the SHORT correction refer to Measuring data for SHORT correction on page 54 Chapter 5 111 m x lt D Q E 2 Q e x Q ze 2 1ueuJjaJnseo v 9je1noov JO uonejedaujg G Table 5 1 Step 1 Step 2 Step 3 Step 4 Preparation for Accurate Measurement Executing Correction Obtaining correction Data Obtaining measuring data for LOAD correction Preparing the standard for LOAD correction To measure the data for the LOAD correction you must first prepare a device as the standard used for this measurement You can use any device that has a stable known value as the standard Also the type of standard and the type of DUT can be different For example even if you measure a capacitor you can use a resistor as the standard When using an existing standard Any device that has an accurate value guaranteed as the specification can be used as the standard When using a general purpose Capacitance component as the standard If you cannot prepare an existing standard value a general purpose device capacitor resistor and so on by
131. ep feature You can use the BEEP field on the LIMIT TABLE SETUP page or the CALC COMP BEEP command to turn on off the beep feature for the comparator 80 Chapter 4 Step 1 Step 2 Step 3 Step 4 Setting up Measurement Conditions and Display Changing the Beep Tone Changing the Beep Tone Functional Description The E4981A allows you to change the beep tone to one of five levels To change the beep tone Press System Press SYSTEM CONFIG softkey Use the cursor keys to select the BEEPER TONE field Change the beep tone by pressing the appropriate softkey Softkey Description TONE 1 Selects tone 1 TONE 2 Selects tone 2 TONE 3 Selects tone 3 TONE 4 Selects tone 4 TONE 5 Selects tone 5 B OW o Bro Sa 25 a e c 3 no v z 2 0 Qa o og m o9 bg 5 E Chapter 4 81 Setting up Measurement Conditions and Display Configuring the Time Zone Configuring the Time Zone Functional Description The E4981A allows you to set a time zone Configuring the System Date on page 83 changes whenever the time zone is changed Set the time difference from Greenwich Mean Time GMT To configure the time zone Step 1 Press System Step 2 Press SYSTEM CONFIG softkey Step 3 Use the cursor keys to select the TIME ZONE field Step 4 Use the following softkey Softkey Description HOUR INCR Increases the time up to 15 in steps of 1 MINUTE INCR When the time is plus incre
132. eraging For the setup procedure refer to Setting Up Averaging Count on page 68 Making measurements using a four terminal pair You can use four terminal pair measurement to eliminate measurement errors For details refer to Principle of four terminal pair measurement on page 254 Chapter 6 129 Executing Measurement Tips for More Accurate Measurement Using Frequency Shift When two or more E4981As are intergrated into a single system you can shift the 1 MHz measurement frequency by 4 196 1 0 2 or 4 296 to avoid interference between the measurement signals You can specify the amount of shift the signal frequency actually applies to the DUT relative to 1 MHz as a percentage of 1 MHz If the specified value is out of allowable setup range the maximum value or minimum value is set For setup procedure refer to Setting up frequency shift on page 72 130 Chapter 6 Executing Measurement Tips for Increasing Measurement Speed throughput Tips for Increasing Measurement Speed throughput You can use the following methods to increase the measurement speed 9 m x lt D Q en zn 2 Ke D iR en D 3 D Setting measurement time to 1 Set the measurement time to 1 which provides a shorter measurement time For the setup procedure refer to Selecting Measurement Time on page 66 Setting measurement range mode to the fixed range If you set the measurement range mode to
133. eries Checks the front panel keys Visual confirmation only no pass fail result shown on screen Checks the LED LCD on the front panel Visual confirmation only no pass fail result shown on screen Checks the handler interface Visual confirmation only no pass fail result shown on screen Checks the scanner interface Visual confirmation only no pass fail result shown on screen For more information on self test of Handler and Scanner Interface refer to E4081A Service Guide 216 Chapter 11 WARNING Precautions for Use and Daily Checks Cleaning this Instrument Cleaning this Instrument pru ER o og 2S lt 9 On a gt Oo on eum 0 6 D This section explains how to clean the instrument To protect yourself from electrical shock be sure to unplug the power cable from the outlet before cleaning the instrument Never clean the internal components of the instrument Unknown Terminals Unknown terminals on the front panel of the E4981A are fitted with BNC Type connectors m Stains or other damage to these connectors would significantly affect the measurement accuracy Please give attention to the following precautions e Always keep the connectors free from stains or dust Do not touch the contact surface on the connectors e Do not plug damaged or scratched connectors into the test ports e Use compressed air to clean connectors Do not use abrasives under any circumstance
134. eristics of Capacitance DUT DUT Example of Characteristics Measurement function Small C Cp D Cp Q Cp G Cp Rp NE EE f Large C Cs D Cs Q Cs Rs FEV OV Z f 252 Appendix E Table E 2 Figure E 6 Technical Information Basic Principles of Capacitance Measurement Selection criteria of parallel series equivalent circuit models There are two equivalent circuit models used for capacitance measurement parallel mode and series mode as shown in Table E 2 You must select one of these before measurement depending on the magnitude of reactance and the effect of the equivalent parallel resistance Rp and equivalent series resistance Rs on it Parallel Series Equivalent Circuit Models and Measurement Functions of the E4981A Circuit model Measurement function of E4981A Definition of D Q G Parallel equivalent Cp D Cp Q Cp G Cp Rp D 1 I2nfCpIRp circuit model Q 1 D 2afCplRp G 1 Rp Series equivalent Cs D Cs Q Cs Rs D I2nfCslRs circuit model Q 1 D I IZ2fCsIRs o When capacitance is small When capacitance is small reactance is large Therefore the effect of Rp is greater than that of Rs When Rs is small its effect can be neglected compared to capacitive m o Q 2 O v e im 3 o n 2 2 reactance In this case use the parallel equivalent circuit model shown in Figure E 6 a o When capacitance is large When capacitance is large reacta
135. erminal 220 Beeping persists when turning ON the comparator function 0 0 0 2 cece eee eee 220 The front panel keys are unavailable 0 2 2 0 cect eee teen ene eens 221 The measured value is abnormal 0 00 etn eee eee ees 221 Saving to USB memory fails 0 0 ce me 221 An error message or warning message is displayed 00 eee eee eee eee 221 Check Items When Trouble Occurs During Remote Control eee 222 The instrument does not respond to the external controller or malfunctions 222 You cannot read out the measured value 2 2 0 2 ccc eee eee 222 An error message is displayed soe sercos ccc cc eee mee 222 A Manual Changes Manual Changes i ceo eere RE ex Pure de kde teh Ghd ieee baked REPRE be ees 224 B Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A 1 0 eee eee 226 14 Contents C Initial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up 234 D Error Messages Error messages alphabetical order llsleleeeeeeeeeee nent n tenes 240 V2 100 cuisse te haat Lie em hea tuus ELLE A Id puta tola dE 240 A CRid ud ue RIGGM RR POUR epe mem dore tbe ep peas dace Rihana Eee he p bre otc een 240 Bea reser Qn Lec DI Sdn p Mu Pd pe a 240 Coed lerg rREXea Ea gp REA owas Pee PAG EEUU BRE RBRESRE Sega PORES E doa fd 240 D oli
136. es for example those of small capacitance chip capacitors use a guard plate to minimize measurement errors caused by stray capacitance Figure E 11 shows an example of using a guard plate with the measurement contacts of a four terminal pair structure Example of Connecting Guard Plate to DUT Lour Lror Hpor Heur Ground gt DORIA HA E Capacitance Meter 4TP Test Lead Shielded Contact of Test Lead Contact here PA 4 E o A Jf P M UM Fa Guard Plate DUT Not grounded 4288206136 Shield By using a shield the effect of electrical noise picked up by the test leads can be significantly decreased Therefore prepare a shield plate and connect it to the outer shield conductor of the four terminal pair test leads as shown in Figure E 12 Guard Shield Lcur LPor Heor HcuR Guard Shield LC00e7013 Appendix E 257 m o Q O v e im 3 o n 2 2 Technical Information Basic Principles of Capacitance Measurement 258 Appendix E Index Symbols AMode key 74 Numerics 4 terminal pair measurement Precautions 255 Principle 254 4268 4288 vs E4981A GPIB Command 226 A Absolute mode 137 Absolute tolerance mode 137 Accuracy 183 Accurate measurement 129 Arrow key 42 Attention of USB Memory 89 Auto range mode 64 Auto Recall 95 Auto Hold key 65 AUX BIN 142 Available measurem
137. es the names and functions of the parts on the E4981A s rear panel Figure 2 2 Rear panel 1 Handler 8 Scanner 9 GPIB Interface Interface Interface 3 LAN Port 5 Serial Number Plate 2 USB USB TMC 4 External Trigger 6 Power Cable Interface Port Input Connector Receptacle e4981aue0037 1 Handler Interface This interface is for data exchange with an automatic machine handler used on a production line Connector type 36 pin Centronics 2 USB USBTMC Interface Port Through this port you can control the E4981A via external controllers Connector Types Universal Serial Bus USB jack type mini B five contact points Female Compliance Standards USBTMC USB488 and USB2 0 The USB port of the E4981A provides screw holes to secure the USB cable with a custom make bracket The figure describes the dimension required for the custom bracket The distance between the surfaces of the rear panel and USB connector is 2mm The length of the screw should be less than 10mm 34 Chapter 2 NOTE Overview Rear Panel Names and Functions of Parts z USB Connector Rear Panel The length of screw should be less than 10mm e4981aue0046 3 LAN Port The port to connect the E4981A to a LAN Local Area Network Connecting this instrument to a LAN enables you to control this instrument by using SICL LAN or telnet or from an external PC via a Web server This is compliant with LXI st
138. essages Error messages 240 Warning messages 247 External trigger 126 Pulse width Ext Trig terminal 127 Handler interface 199 F Fail Beep mode 79 Firmware version 224 Fixed point display 73 Fixed range mode 64 FixMsd 74 Fixture Connection example 44 Floating point display 73 Frequency Measurement signal How to set up 48 Specification 179 Frequency Shift 130 Frequency shift 72 Front Panel 31 Front panel key Basic operation 42 Fuse 25 G G 60 251 GPIB Address 85 Guard Terminal 33 H Handler Interface Controlling Handler Interface 161 Handler interface Electrical characteristics Input signal 159 Output signal 156 Output 150 Pin assignment 152 Timing chart 154 Hold range mode 64 I Improper high low limits 247 Incompatible state file 248 Information for Replacing 4268A 4288A with E4981A 225 Initializing 45 Internal Memory 88 Internal trigger 126 IP Address 86 Item selection method 42 260 K Key Lock 214 Key lock Unlock tips 221 Key operation 42 L LAN 35 86 LCD Display 37 Lcl key 221 Level How to set up 49 Specification 179 Limit range Clear 136 Designation method 137 Primary parameter BIN1 9 140 Secondary parameter 141 LOAD Correction Data How to measure 115 Measurement condition 115 Structure 113 How to turn on off load correction 106 LOAD correction Data How to check 120 Definition procedure 113 Load correction
139. esults as shown below 0 OUT OF BINS 1 to 9 BIN through BIN 9 10 AUX_BIN 11 BIN_NA The lt BIN No gt data output format is either 2 or 3 character fixed length ASCII format SN or SNN S N 0 to 9 Example of measurement result output Example of saved measurement result data 1 059517689E 24 1 954963777E 00 0 0 9 706803904E 25 2 095857894E 01 0 0 2 172725 184E 24 2 072965495E 01 0 0 3 660460872E 25 7 172688291E 00 0 0 1 135428381E 24 6 490636201E 01 0 0 1 384790632E 24 2 193020669E 00 0 0 3 8298793 1 OE 26 2 788435221E 01 0 0 To save measurement results into USB memory Plug a USB memory stick into the front USB port Press Save Recall Press SAVE DATA softkey Press START LOG softkey and then press the following softkeys to enter the measurement results into the data buffer memory Softkey Description START LOG Starts logging the measurement results into the data buffer memory SAVE amp STOP Copies the data from the data buffer memory into the USB memory Then stops saving the measurement results into the data buffer memory and clears the data buffer memory 98 Chapter 4 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function NOTE The above mentioned steps stores the data in buffer 3 enabling to save the data to USB memory Step 5 Start measurement The data buffer memory is filled with up to 1000 sets of measu
140. f the Keysight E4981A than that indicated by the current printing date of this manual The information in this manual applies directly to the E4981A model that has the serial number prefix listed on the title page of this manual 223 Manual Changes Manual Changes Manual Changes If your E4981A has firmware or serial number shown in Table A 1 and Table A 2 see the corresponding manual changes Table A 1 Manual Changes by Serial Number Serial Prefix or Number Make Manual Changes Table A 2 Manual Changes by Firmware Version Version Make Manual Changes The ten character serial number is stamped on the serial number plate Figure A 1 on the rear panel NOTE You can check the firmware version by pressing the System key Figure A 1 Serial Number Plate Example Agilent Technologies Made In Malaysia E4981A MY 12345678 e498 1auj1003 224 Appendix A Information for Replacing 4268A 4288A with E4981A V186r3 ULM V88Zr V89cr IH 3 o x 3 o e 2 s o um D D o 5 9 2 Q This appendix provides a functional comparison between the Keysight 4268A and 4288A with Keysight E4981A See Keysight 4268A 4288A Operation Manual for more detailed information on the 4268A 4288A 225 Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Functional comparison between 4268A 4288A and E4981A Tab
141. f you trigger a reset or turn OFF the power the values are maintained Flow of measuring correction data for the multi correction MULTI compensation ON Select definition of standard for LOAD compensation Common definition Channel by channel for all channels le definition v v Define standard value for LOAD compensation Sapna selector gt v Define standard value for LOAD compensation Channel selection Y v Measured data for Measured data for OPEN LOAD SHORT OPEN LOAD SHORT compensation compensation Repeat as many channels Repeat as many channels as required as required 4288aoe068 Selecting definition method of the LOAD correction standard You can select how to define the LOAD correction standard value LOAD correction reference value either defining a value for each channel or defining a common value for all channels If you select the channel by channel definition the value is set up as the reference value for the channel selected when you enter the reference value If you select defining a common value for all channels the value is stored as the value for all channels regardless of the channel selected when setting up the value Refer to Structure of data for LOAD correction on page 114 166 Chapter 9 Step 1 Step 2 Step 3 Step 4 Using Scanner Interface Using Multi correction Functi
142. finishes this becomes LOW When this 6 INDEX Output signal is received you can change the channel of the scanner You cannot obtain the measured data until the EOM signal is received External power input Supplies the voltage to the output 7 EXT DCV signals INDEX and EOM and input signals EXT TRIG CHO CH7 and CH VALID The input voltage range is between 5V and 15V 8 CH1 Input Channel number selection signal 8 bit binary input Selects the correction data for each channel of the 9 CH3 scanner The most significant bit is CH7 pin number 11 The least significant bit is CHO pin number 1 10 CH5 11 CH7 External trigger signal This is available when the trigger mode is set to the external trigger Ext The trigger is 12 EXT_TRIG Input generated at the rising edge of a pulse When this trigger pin is not used the pin should be connected with GND LO Measurement cycle end signal When a series of 13 EOM Output measurement processes finishes and the measured data becomes available this becomes LOW 14 COMMON Common pin for the external dc voltage EXT DCV pin number 7 Chapter 9 169 G o Co CD O amp 2 2 D E 2 D k D o o Using Scanner Timing Chart Interface Timing Chart Figure 9 3 shows the timing chart The time periods of T1 T5 in the figure are described in the following table Minimum value Typica
143. ge CATALOG 90 Parallel equivalent circuit model 253 Parameter Measurement parameter How to set up 46 Selection of circuit model 253 Pass Beep mode 79 Percent tolerance mode 137 Power Cable 26 Power source Frequency 206 Power consumption 206 scanner interface 175 Voltage 206 Power Supply 25 Power Switch Turning the Power ON and OFF 27 Prefix 224 Preset 32 Primary parameter How to set up 46 Product Overview 30 Pulse width external trigger Ext Trig terminal 127 Handler interface 199 Q Q 60 251 R Range How to set up 64 Range mode 64 Rear Panel 34 Recall 88 Auto Recall 95 Settings that can be recalled 234 Recommended Calibration Period 218 Recommended measurement range 181 Register Number 91 Regular Calibration 218 Remote mode 221 Replacement 218 Requesting Repair 218 Reset E4981A Initial settings 234 Limit range 136 Rp 60 251 Rs 60 251 S Safety 210 Save 88 Measurement Result 96 Screenshot 100 Settings that can be saved 234 Save Recall 88 Instrument Configuration State 90 Scanner Interface Controlling Scanner Interface 176 Timing chart 170 Index 261 Index Scanner interface Electrical characteristics Input signal 172 Output signal 171 Power source 175 Multi correction 164 Pin assignment 168 Screenshot Save to USB memory 100 Secondary parameter How to set up 46 Self Test 215 Serial Number Plate 35 Serial number 224
144. h state file is assigned a file name in the format of register number sta To save configuration states into USB memory Press Save Recall Use the cursor keys to select the MEDIA field Press EXT softkey Use the cursor keys to select the No field 10 through 19 for your desired register Press SAVE softkey to save configuration states into the USB memory If you have selected the No field for a register that already contains configuration states the new configuration states overwrite the existing ones To recall configuration states from USB memory Press Save Recall Use the cursor keys to select the MEDIA field Press EXT softkey Use the cursor keys to select the No field 10 through 19 for your desired register Press RECALL softkey to recall configurations from the USB memory State files are automatically assigned file names 10 sta through 19 sta and you cannot change the file names If you attempt to recall configuration states under any of the following conditions an Incompatible state file warning message is displayed e The configuration states were saved under a different firmware version e The configuration states were saved from another E4981A with a different option s equipped Using the Auto Recall Feature B On D o 25 zo e es Qo v 30 Qa og m Lo Bg lt 5 PE Functional Description You can have the E4981A at start up automatically recall the configuration
145. he case of DISPLAY BLANK page the time required to update the display on each page display time is as follows Table 10 16 When a screen is changed drawing time and switching time are added The measurement display is updated about every 100 ms Display time Item Time MEAS DISPLAY page drawing time 10 ms MEAS DISPLAY page large drawing time 10 ms BIN No DISPLAY page drawing time 10 ms BIN COUNT DISPLAY page drawing time 10 ms Measurement display switching time 35 ms Measurement time Table 10 17 shows the measurement time T3 T4 for each measurement time mode Measurement time Frequency Measurement time ms 120 Hz N 8 3 Ave 2 7 0 5 1 kHz N 1 0 Ave 2 0 0 5 1 MHz 1MHz 1 1 MHz 2 N 1 0 ee 100 100 Fshift Ave 1 3 0 5 NOTE Ave Averaging factor Fshift Frequency shift setting Measurement time mode N 1 2 4 6 8 200 Chapter 10 Specifications and Supplemental Information Supplemental Information Measurement data transfer time through GPIB USB LAN Table 10 18 shows the measurement data transfer time under the following conditions The measurement transfer time varies with the measurement conditions and computer used Host computer DELL Precision 390 1 86GHz WindowsXP USB GPIB interface card 82350A USB GPIB interface E2078A Display ON Measurement range mode Hold range mode Hold OPEN SH
146. he sorting judgment result is BIN1 to BINO You can also disable the beep sound For the procedure on how to set up the beep output refer to Setting Up Condition To Make A Beep on page 79 148 Chapter 7 P jen p 2 Q I D 2 o D 3 D ak iR e 0 Using Handler Interface You can output the measurement end signal the sorting result of the comparator function and other data from the Keysight E49814A as well as input an external trigger signal or a key lock signal to the E4981A through the handler interface This chapter also gives information required to configure an auto sorting system that combines the E4981A and a handler in using the handler interface and the comparator function 149 Using Handler Interface Output of Comparator Sorting Result Output of Comparator Sorting Result When the comparator function is ON the comparator sorting result is output through the handler interface Figure 8 1 and Table 8 1 show the relationship between the comparator sorting result and the output signals of the handler interface BIN1 BIN9 AUX BIN OUT OF BINS PHI PLO and SREJ NOTE When the comparator function is OFF no signals are output except for INDEX EOM and ALARM INDEX and EOM stay LOW ALARM as when the comparator is ON is output when an error occurs EXT TRIG regardless of the ON OFF state of the comparator function is active when the trigger mode is set to
147. hen measurement frequency is 120 Hz measurement signal level 1V 0 7 fo di 0 6 e B B oe ES o ce o 5 o o lt 0 001 Measurement Value Cp Cs F e4981cue0027 pue suomneoyioeds 0L c5 en Ke O D D 2 m 3 je y D E ie 2 Chapter 10 191 Figure 10 5 Specifications and Supplemental Information Basic Specifications Accuracy of D when measurement frequency is 1 kHz measurement range 100 pF to 10 uF measurement signal level 1V Na N24 0 LLHTUL 1 0E 11 1 0E 1 e4981cue0032 192 0E 9 1 0E 8 1 0E 7 1 0E 6 Measurement Value Cp Cs F 1 0E 5 Chapter 10 Specifications and Supplemental Information Basic Specifications Figure 10 6 Accuracy of Cp and Cs when measurement frequency is 1 kHz measurement range 100 pF to 10 uF measurement signal level 1V 0 2 Accuracy Cp Cs 96 0 1 0 05 OE 11 1 0E 10 1 0E9 1 0E8 1
148. i pansan iei ada aa e MU PRU DP E bx op PLUR DUE eae eee IER bens 241 E PEE AE E E E EEE E S T E E E E E E EA 241 Pie GG Sieg tie ee dake Rees EOE oes R E a E SE E gabe dee Lae hg we AEE E 242 Gosek ees oh xu PORE PESCA UPS SERA P ERG PERE ARES CEO Or Ve SUUS RS Pte HE 242 Acetic toi bach eias eek biel MUPERU DURER RUULRPCPU UU U RAPERE PUMP ED 242 p n m 242 Ico teu PULS LSU ER UNAM s c ep EE O EA 243 M sh herr RRESIEVRSS ERG gages Pee Poe ERA REA UAR ORA ERES E ESAE RSGRE Ede Kg 243 UNE eet aS ete ite Ne a Me ULL LU LI Ld IUE LE P Me GN ee 243 O dekdie vg rU RRREOUEREES RES RR SEER SR RU RARE Ee eh qd artus Phe Re RS 244 I E EE 244 o rm 244 Rg ie th gtd ts ae ULUSM ou ma cid CELA LIRE 245 C 245 Ib dottor c uds eco E MUS cL CU uM SU DU m rU E bebat ha 245 Ua deren dad phi E EE RE E ens PUR ERN EM ERI RU bee EUR ERU Rd fg 246 Warning Messages WARNING 0 e m e eens 247 E Technical Information Measurement Principle i ecu ep he cba dail s Maske MESS E EEA RR IE 250 Basic Principles of Capacitance Measurement 1 0 2 0 0 00 252 Typical characteristics of capacitance DUT 1 cee eee 252 Selection criteria of parallel series equivalent circuit models cece eee ee eee 253 Principle of four terminal pair measurement 0 0 0 ee 254 Precautions for four terminal pair measurement 00 0 0 0 eee eee eee eee 255 15 Contents 16
149. idental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements and other customer assistance agreements are available for Keysight Technologies products For any assistance contact your nearest Keysight Technologies Sales and Service Office Addresses are provided at the back of this manual Typeface Conventions Bold Boldface type is used when a term is defined For example icons are symbols Italic Italic type is used for emphasis and for titles of manuals and other publications Key Indicates the hardkey whose key label is Key Key ITEM Indicates a series of key operations in which you press the Key key select the item called ITEM softkey or field name on the displayed menu using the cursor and then press the softkey E4981A Documentation Map The following manuals are available for the E4981A Operation Manual Keysight P N E4981 90000 Most of the basic information necessary for using the E4981A is provided in the Operation Manual It describes installation preparation measurement operation including calibration performances specifications and error messages For SCPI programming see the Programming Manual Programming Manual Keysight P N E4981 90001 The Programming Manual shows how to write and use the VBA program to control the E49814A Contents 1 Unpacking and Preparation Checking the Shipment s
150. ield Select Cp or Cs which you required Use the right cursor keys to select A field Input your desired value for the primary parameter for LOAD Use the right cursor keys to select B field Input your desired value for the secondary parameter for LOAD 120 Chapter 5 NOTE Table 5 3 Preparation for Accurate Measurement Executing Correction Avoiding Mistakes Related to Work in Obtaining correction Data Avoiding Mistakes Related to Work in Obtaining correction Data To avoid simple work related mistakes in measuring the data for OPEN SHORT LOAD correction for example setting up the OPEN state and SHORT state inversely it is important to confirm that the measured data is correct Using warning messages If the measured data is out of the valid range shown in Table 5 3 when measuring the data for OPEN SHORT LOAD correction the warning message Out of limit appears which allows you to detect an error of the measured data The valid ranges are fixed and cannot be changed Even after the warning message is displayed the correction data is used as is Valid ranges of correction data Type of correction Valid range OPEN correction IYI lt 20 uS SHORT correction IZI 20 Q LOAD correction IZrefl 0 9 lt IZI lt IZrefl co 1 1 In Table 5 3 Y is the measured admittance value Z is the measured impedance value and Zref is the definition value of the standard for the LOAD cor
151. igger INT external trigger EXT external trigger EXT external trigger GPIB LAN USB trigger GPIB trigger BUS or EXT GPIB trigger BUS or manual manual trigger MAN BUS or manual trigger MAN trigger MAN External Trigger Slope Selectable from N A N A POSitive or NEGative slope for BNC connector Measurement Data Data transfer Binary ASCII Selectable from ASCII Selectable from ASCH Selectable from format setup format or binary 64 bit format or binary ASCII format or format 64 bit format binary 64 bit format Binary data byte order Selectable from N A N A NORmal or SWAPped transfer order ASCII long format Can turn ON OFF the N A N A long format Data readout Measurement result Measurement status measured primary secondary parameter value comparator sorting result BIN count value or measurement signal level monitor value Measurement status measured primary secondary parameter value comparator sorting result BIN count value or measurement signal level monitor value Measurement status measured primary secondary parameter value comparator sorting result BIN count value or measurement signal level monitor value Data buffer setup Data for 1000 measurements can be outputted in batch Data for 2000 measurements can be outputted in batch Data for 1000 measurements can be outputted in batch Comparator ON OFF Can turn ON OFF the Can t
152. ignal frequency selection menu screen lt MEAS DISPLAY 128 Hz FUNC Cp D RANGE AUTO FREQ LEVEL 1V UE MEAS TIME 6 1 MHz Cp 115 8457 pF D 0 815498 VON 51 7849 pY IMON 48 5627 p CH SINGLE CORR amp m 0FF Enter value or select e4981auj0006 NS In Option 002 1MHz frequency is not available 48 Chapter 3 Getting Started Learning Basic Measurement Procedure Setting up measurement signal level Set up the voltage level of the signal applied to the DUT capacitor during measurement Step 1 Press Display Format key Step 2 Press the MEAS DISPLAY softkey Step 3 Use the cursor key to select the LEVEL field Step 4 Use the softkeys or entry keys to enter the test signal level When data is entered with the entry keys the softkeys change to units labels mV V Softkey Description INCR Increments the oscillator voltage level in steps of 100 mV 500 mV 1 V CORR Bm OFF Enter value or INCR DECR e4981auj0007 INCR Increases the oscillator voltage level with a resolution of 10 mV DECR Decreases the oscillator voltage level with a resolution of 10 mV DECR Decrements the oscillator voltage level in steps of 1 V 500 mV 100 mV Figure 3 6 Measurement signal level setup screen lt MEAS DISPLAY m INCR FUNC Cp D RANGE AUTO FREQ 1 kHz LEVEL W MEAS TIME 6 DER K Cp 24 85659 pF en O 2 D 5 52241 2 DECR a VMON 43 589 pV IMON 38 1361 p Y CH SINGLE D D a
153. ing Based on Measured Results Comparator Function Reading out Sorting Judgment Result AE Reading out Sorting Judgment Result The sorting judgment is obtained through the comparator function according to the flow shown in Figure 7 5 Figure 7 4 shows the relationship between the screen display and the sorting result Figure 7 4 Relationship between display output and comparator sorting result Upper Line Display Lower Line Display OUT PHI No display No display Primary Parameter uo peseg uiuos 7 O o E S S G a z G E c n uonoun J 10jeJeduo2 ynsed peunsee v PLO Secondary Parameter Secondary Parameter Parts enclosed with ppear when AUX BIN is ON Parts hatched with 7 appear when there is a gap between each BIN s limit ranges NOTE If an overload is detected the sorting judgment cannot be performed and therefore is displayed in the upper row If Low C reject is detected normal sorting judgment is performed but LOWC is displayed in the upper row instead of the sorting judgment result OUT AUX or BINI to BINO9 NOTE The sorting judgment result can be read out through the SCPI command Chapter 7 145 Figure 7 5 Sorting Based on Measured Results Comparator Function Reading out Sorting Judgment Result Sorting judgment flow Sorting start IN or OFF OUT or OFF Sort secondary ort primary parameter for IN or OFF OUT or
154. ing Scanner Interface Electrical Characteristics Figure 9 5 Circuit diagram of scanner interface input signals channel control signals Scanner interface connector EXT_pDcv gt ICH_VALID e4981a0e0002 so Cc s Co CD O amp 2 2 D 2 Len 2i D E D O tol Chapter 9 173 Using Scanner Interface Electrical Characteristics Figure 9 6 Circuit diagram of scanner interface input signals external trigger signal Scanner interface connector FN EXT DCV EXT TRIG e4981a0e0003 Table 9 5 Selection of scanner input trigger voltage SYSTem SCANner TRIGger VOLTage para 5V para 9V 9V para 15V S1 ON OFF S2 OFF ON When the source voltage is between 5V 9V switch S1 is ON closed and current flows through the input signal resistance of 1kQ When the source voltage is between 9V 15V switch S2 is ON closed and current flows through the input signal resistance of 2 27 kQ NOTE If the parameter set is out of range an error is generated 174 Chapter 9 Using Scanner Interface Electrical Characteristics Power source You can use only the external power source EXT DCV Set its power output within the following voltage range Voltage range V EXT DCV 5 15 e jen 2 2 Q e O
155. ing judgment result of the comparator function is displayed on the screen and also output from the handler interface In addition you can read out the sorting judgment result from an external controller by using the SCPI command together with the measured value You can use the BIN count function to count the number of DUTS sorted into each BIN display the counts on the screen and read them out with the SCPI command 134 Chapter 7 Sorting Based on Measured Results Comparator Function Turning ON OFF Comparator Function Turning ON OFF Comparator Function The ON OFF state of the comparator function also controls the ON OFF state of the output of the handler interface signal Setup procedure Step 1 Press Meas Setup Step 2 Press LIMIT TABLE softkey So N Sz Step 3 Use the cursor keys to select COMP field E B Step 4 Use the following softkeys S S Sawn uPT Softkey Function S Qu eg 5o ON Turns ON the comparator function CE OFF Turns OFF the comparator function Chapter 7 135 Step 1 Step 2 Step 3 Step 4 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Setting Up Sorting Judgment Conditions Clearing resetting limit ranges Clearing the limit ranges returns the settings of the following items to the factory default preset values refer to Table C 1 on page 235 e ON OFF lower limit value and upper limit value of all limit ranges BIN1 to BIN9 a
156. ion SHORT correction and ON OFF SHORT correction SHORT correction ON OFF LOAD correction can Entire correction and LOAD correction be turned ON OFF ON OFF can be turned 7 separately ON OFF separately LOAD correction ON OFF LOAD correction can be turned ON OFF separately OPEN correction data parameter format Selectable from G B or N A Selectable from G B Cp G or Cp G SHORT correction data parameter format Selectable from R X or N A Selectable from R X Ls Rs or Ls Rs Definition parameter of the value for LOAD standard correction Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Measurement Range on Load correction Auto Range can be set ON OFF when LOAD measurement is done N A Auto Range can be set ON OFF when LOAD measurement is done Correction data Measurement Measures the OPEN SHORT LOAD correction and turns on the correction function Measures the OPEN SHORT LOAD correction and turns on the correction function Measures the OPEN SHORT LOA D correction and turns on the correction function Setup and read out Can setup and readout the correction data by GPIB command is available for readout GPIB command is available for readout correction ON OFF both SCPI command jand setup and setup and front p
157. is an example of calculating the accuracy of Cp and Rs assuming that measured result of Cs is 8 00000 nF and measured result of Rs is 4 00000 kQ Because the Cs accuracy is D 2cencoFreqeeCsceoR p 2eertec10 e98co 1095942 105 0 20 1 multiply 0 1346 the result obtained for Cs D by 1 D The result is 0 1300 1 0 27 0 1352 From Table 10 6 the equation to calculate the accuracy of Rs is 90 50e9 K Cx Substitute K 2 5 same as Cs D and 8 00000 nF of the measured Cs result into this equation The accuracy of G is 90 50c 2 5 8 00000 26 875 Q Because D gt 0 1 multiply the result by 1 D as in the case of Cs The final result is 27 95 Q Therefore the true Cs value exists within 8 00000 8 00000e90 1352 100 8 00000 0 01082 nF that is 7 98918 nF to 8 01082 nF and the true Rs value exists within 4 00000 0 02795 kQ that is 3 97205 to 4 02795 kQ 212 Chapter 10 pw pw fad m a8 Un oS o o am og ac 2 0 11 Precautions for Use and Daily Checks This chapter describes precautions to take when using the E4981A and explains how to perform regular maintenance on the device 213 Figure 11 1 Step 1 Step 2 NOTE Precautions for Use and Daily Checks Precautions for Use Precautions for Use This section describes the precautions to take in using the E4981A Avoiding improper input from the front panel key lock function When you do not need to operate the keys on the front panel y
158. is warning message appears data for the LOAD correction is still used However it is recommended to confirm that the connection between the test fixture and the UNKNOWN terminal as well as the measurement procedure are correct If a measurement failure occurs while measuring the data for correction the error message Correction Meas Aborted appears If this error occurs the data used for correction before the measurement remains without change Use the cursor keys to select LOAD RNG field Use the following softkeys Softkey Function AUTO Turns ON the auto ranging function when load correction is executed FIX Turns OFF the auto ranging function When the load range is set at FIX the selected measurement range is used at the LOAD measurement Description of Softkeys To enable disable or otherwise control the behavior of load correction use the following softkeys Softkey Description ON Enables load correction OFF Disables load correction MEAS LOAD Starts load correction 116 Chapter 5 NOTE Step 1 Step 2 Step 3 Step 4 Preparation for Accurate Measurement Executing Correction Obtaining correction Data Selecting Single Multiple Correction Mode Functional Description E4981A can store up to 256 sets of OPEN SHORT LOAD correction data In addition it can store one set of the standard s reference value data at a specified frequency point In multiple correction mode you can switch among up to 2
159. it value using the HIGHx 1 softkey e You can clear all the limit values and sets the status to OFF for your selected bin by pressing the CLEAR LINE softkey Step 7 Use the cursor keys to select the 2nd HIGH field Step 8 Enter the limit value using the entry keys When you enter the value the softkey labels change to unit labels p n u m x1 e You can clear your selected upper limit value by pressing the CLEAR softkey e You can enter the upper limit value using the LOWx 1 softkey e You can clear all the limit values and sets the status to OFF for your selected bin by pressing the CLEAR LINE softkey Chapter 7 141 Table 7 4 Step 1 Step 2 Step 3 Step 4 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Setting up AUX function If the secondary parameter limit range is ON the sorting result varies when it exceeds the secondary parameter limit range depending on the ON OFF state of the AUX function Table 7 4 Sorting result when measured secondary parameter value exceeds limit range Primary parameter sorting result AUX BIN function Sorting result OFF OUT OF BINS One of BINI to BIN9 ON AUX BIN Not sorted to any BINs No relation OUT OF BINS Setup procedure Press Meas Setup Press LIMIT TABLE softkey Use the cursor keys to select AUX field Use the following softkeys Softkey Function ON Turns ON the auxiliary f
160. jX B PE Introducing impedance yields complicated expression P2 TA 8c py T Y G B Sf Lo Introducing admittance yields simplified expression mal Real Axis BG i Symbols in Figure E 4 have the following meanings G Conductance B Susceptance IYI Absolute value of admittance LCO0e3014 The E4981A measures the vector value of a DUT s impedance Z and indicates the result as the circuit constants of the equivalent circuit shown in Figure E 5 Relationship between Measurement Parameters where w 2 x f f Measurement frequency tan picia CR e m F AMD AN I EERE JES pp Eng t 1 Cp ws S jwCp mY Z Rs j PA wes a va P E Y jB B wp Y268 jw where w 2 x f f Measurement frequency 4288a0e132 Appendix E 251 m o Q O v e im 3 o n 2 2 Technical Information Basic Principles of Capacitance Measurement Basic Principles of Capacitance Measurement This section explains the useful basics when measuring capacitance with the E4981A Typical characteristics of capacitance DUT As shown in Table E 1 the impedance characteristics of capacitance components change depending on the actual operating conditions Therefore to measure impedance accurately it is necessary to take measurements under the actual operating conditions in which the component is used Table E 1 Typical Charact
161. keysight com find tmdir You can also contact one of the following centers and ask for a test and measurement sales representative 21 01 2004 United States Test and Measurement Call Center tel 1 800 452 4844 fax 1 888 900 8921 Canada Test and Measurement Call Center tel 1 877 894 4414 fax 1 888 900 8921 China tel 800 810 0189 fax 800 820 2816 Europe tel 31 20 547 2323 fax 31 20 547 2390 Japan Call Center tel 0120 421 345 tel 81 426 56 7832 fax 81 426 56 7840 Korea tel 82 2 2004 5004 fax 82 2 2004 5115 Latin America tel 305 269 7500 fax 305 269 7599 Taiwan tel 0800 047 866 fax 0800 286 331 Australia New Zealand tel 61 3 9210 5555 Australia fax 61 3 9210 5899 tel 64 4 939 0636 New Zealand fax 64 4 972 5364 Asia Pacific tel 65 6375 8100 fax 65 6836 0252 Email tm_asia keysight com This information is subject to change without notice Keysight Technologies 2008 2014 Edition 2 August 2014 E4981 90000 www keysight com KEYSIGHT TECHNOLOGIES
162. l measurement of the DUT Y stored reference value 74 Chapter 4 Setting up Measurement Conditions and Display Setting Up Display e A percentage deviation measurement Identifies the difference between the actual measurement of the DUT and the stored reference value and displays it as a percentage of the reference value This percentage deviation value is calculated based on the following formula A X Y Yoo100 96 X actual measurement of the DUT Y stored reference value To set up the deviation measurement feature Step 1 Press Meas Setup Step 2 Use the cursor keys to select the REF A field Step 3 Enter the reference value using the softkeys or entry keys If you use the entry keys to enter the value the softkey labels change to unit labels p n u m x1 k Softkey Description MEASURE If you want to use a particular device component as the reference connect the DUT and press this key Then the instrument measures the DUT once and automatically fills the REF A and REF B fields with the measured values which now serve as the reference values Step 4 Use the cursor keys to select the DEV A field Step 5 Use the softkey to select the deviation mode for the primary parameter Softkey Description ABS Displays the deviation as the difference from the reference value Displays the deviation as a percentage of the reference value OFF Turns OFF deviation measurement Step 6 Using the cursor keys sele
163. l value TI Trigger pulse width 1 us T2 Trigger response time of 60 us INDEX and EOM T3 Channel number input 0 us hold time T4 Channel number input 0 us setup time T5 Trigger wait time 0 us Figure 9 3 Timing chart of the scanner interface EXT TRIG INDEX EOM ChO Ch7 CH_VALID E4981A Channel Setting e4981aue0014 170 Ch n 1 Ch n Channel Number at Nth measurement Ch n 1 Channel Number at N 1 th measurement Ch n 1 Channel Number at N 1 th measurement Chapter 9 Table 9 2 Table 9 3 Electrical Characteristics Output signal Using Scanner Interface Electrical Characteristics The output signals INDEX and EOM are available as open collector outputs with photo coupler isolated You can obtain each voltage output by connecting a pull up resistor refer to Table 9 2 to the exterior of the E4981A Guide for pull up resistor values Typical resistance Pull up voltage V Resistance value Q Re sistanc value Q ysight part number 5 1 7 k 5 V 3 mA 1 78k 0757 0278 9 3 0 k 9 V 3 mA 3 16k 0757 0279 12 4 0 k 12 V 3 mA 4 22 k 0698 3154 15 5 0 k 15 V 3 mA 5 11 k 0757 0438 Table 9 3 shows the electrical characteristics of the output signals Figure 9 4 shows the circuit diagram of the output signals Electrical characteristics of the scanner interface output signals Output voltage V Maximum Outpu
164. le B 1 compares the functions of the 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A Function E4981A 4268A 4288A Measurement Reset Can be executed using Can be executed using Can be executed condition the front panel or SCPI the front panel or using the front panel command GPIB command or GPIB command Measurement parameter setup Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Selectable from Cp D Cp Q Cp G Cp Rp Cs D Cs Q or Cs Rs Measurement signal setup Frequency Selectable from 120 Hz Selectable from 120 Selectable from 1 1 kHz or 1 MHz Hz or 1 kHz kHz or 1 MHz 1 MHz frequency shift Can be changed to 2 N A Can be changed to 296 196 1 or 096 2 1 or 1 OSC Level Can be set up within the range of 0 1 to 1 Vin steps of 0 01 V Can be set up within the range of 0 1 to 1 V in steps of 0 01 V Can be set up within the range of 0 1 to 1 V in steps of 0 1 V Level monitor function AC Level monitor is Voltage value and Voltage value and always ON current value can be current value can be monitored monitored Signal level compensation Available at 120 Hz or 1 ALC is available N A SLC kHz Output mode Continuous Continuous N A Synchronous Synchronous Measurement range mode Selectable from
165. lected at the time of multi correction measurement ON 1 MHz correction data 1 MHz cable length and 1 MHz 1 MHz frequency shift for the channel selected at the time of multi correction measurement Measurement conditions during data measurement The data for the OPEN correction is measured under the following conditions Measurement range mode auto range mode Measurement time mode 8 For other settings such as averaging and trigger delay the measurement conditions set up at execution are used for measurement Measurement procedure For more information on the measurement procedure for the data used in the OPEN correction refer to Measuring data for OPEN correction on page 51 Chapter 5 109 m x lt D Q E 2 Q e x Q ze 2 1ueuJjaJnseo v 9je1noov JO uonejedaujg G Preparation for Accurate Measurement Executing Correction Obtaining correction Data Obtaining measuring data for SHORT correction Data structure The 120 Hz 1 kHz and 1 MHz data used in the SHORT correction is divided into the data for normal operation and the data of each channel 256 channels for multi correction as shown in Figure 5 3 Figure 5 3 Structure of data for SHORT correction Multi correction OFF Multi correction ON 1 MHz frequency shift 1 MHz frequency shift 120 Hz correction data For channel 255 e4981aue0040 Measured data For SHORT correction 120 Hz
166. lex number and the result is converted to the primary secondary parameters Then for the primary secondary parameter values real number the OFFSET correction is performed Figure 5 1 Data processing flow Data gt averaging gt Vrea Co Rea p gt horam I e p1 2 Offset 9 R se E Bey maton Parameters Secondary Correction z P2 Parameter measurement gt P mode x x EE ma f ADC r 31 Cortection Data Rel H i Vmon System n Vecm me comda r y limon NOTE The measurement value displayed for correction or LOAD REF uses the internal data for calculation The value is set depending upon the state of MULTI CORRECTION LOAD REF or CHANNEL JO uoleredald G m x lt D Q E 2 Q e x Q ze 2 1ueuJjaJnseo v 9je1noov Chapter 5 103 NOTE NOTE Preparation for Accurate Measurement Executing Correction Overview of Correction Function Cable Correction Cable correction avoids measurement error due to the differences of each cable when you use a cable length of 1 m or2 m in 1 MHz In Option 002 1 MHz frequency is not available Measurement error due to an individual cable is proportional to the square of the test frequency Accordingly the difference of each test cables may not be ignored at high frequencies such as 1 MHz When the E49814
167. logies For more information goto www keysight com KEYSIGHT TECHNOLOGIES Notices FIRMWARE REVISIONS SERIAL NUMBERS This manual applies directly to instruments that have the firmware revision A 01 01 For additional information about firmware revisions and serial numbers see Appendix A The information contained in this document is subject to change without notice This document contains proprietary information that is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Keysight Technologies Microsoft MS DOS Windows Visual C Visual Basic VBA and Excel are registered UNIX is a registered trademark in U S and other countries licensed exclusively through X Open Company Limited Portions Copyright 1996 Microsoft Corporation All rights reserved Copyright 2008 2014 Keysight Technologies Manual Printing History The manual s printing date and part number indicate its current edition The printing date changes when a new edition is printed minor corrections and updates that are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated December 2008 First Edition part number E4981 90000 August 2014 Second Edition part number E4981 90000 NOTE NOTE WARNING Safety Summ
168. long The length of the header exceeds 12 characters Refer to IEEEA488 2 7 6 1 4 1 Q Queue overflow The queue contains a certain code other than the code that caused this error This indicates that an error has occurred due to insufficient space in the queue but has not been recorded Query error A comprehensive Query error has occurred for which the E4981A cannot detect further details This code simply indicates the occurrence of a Query error that is defined in TEEE488 2 11 5 1 1 7 and 6 3 Query INTERRPUTED This indicates the status that causes an INTERRUPTED Query error Refer to TEEE488 1 6 3 2 3 This error occurs for example when data byte DAB or GET is received after Query but before the response has been completely sent Query UNTERMINATED This indicates the status that causes an UNTERMINATED Query error Refer to TEEE488 2 6 3 2 This error occurs for example when the E498 1A is specified as a talker and an incomplete program message is received Query DEADLOCKED This indicates the status that causes a DEADLOCKED Query error Refer to IEEEAS8 2 6 3 1 7 This error occurs for example when both input and output buffers become full and the E4981A cannot continue processing 244 Appendix D 440 48 82 102 134 138 150 158 124 Error Messages Error messages alphabetical order Query UNTERMINATED after indefinite response In a certain program messag
169. m the AC outlet or the E4981A unit in case of emergency 22 Chapter 1 Unpacking and Preparation How to Remove the Handle jen O o 9 2g 2 Q o 2 on U x D O o o g o 2 ERE How to Remove the Handle A handle kit is attached to the E4981A Option 600 When using the E4981A with the rack mount kit remove the handle according to the following steps Figure 1 3 How to remove the handle e4981aue0021 Step 1 Lift the handle perpendicular to the unit while pulling it in the direction of 1 Step 2 While pulling the handle in the direction of 1 lift towards 2 NOTE Install the handle with 3 facing toward the front Installing the handle the other way around may damage it Chapter 1 23 Unpacking and Preparation Caution when Using the Handle Caution when Using the Handle Follow the instructions below when using the E4981A s handle otherwise you may get your fingers caught in the handle or the E4981A may fall and be damaged e When the handle is set up as shown in Figure 1 4 do not put any additional weight onto the E49814 or lift it suddenly e Do not touch the handle while the DUT is attached Figure 1 4 The handle in the set up position e498 1aue0022 24 Chapter 1 Unpacking and Preparation Preparations before Use Preparations before Use E jen o o ie 2 2 Ko 2 on U D O RV 0 os 2 2 Verifying the Power Supply
170. main area on the left shows display area on the measured values and left shows measured instrument settings values and instrument which are indicated by settings which are the _ symbol the indicated by the _ display area on the symbol the display right can be used to area on the right can show a variety of other be used to show a measurement settings variety of other measurement settings Reset of displayed error message Clears errors caution N A N A messages from the display Input the comment lines Can enter arbitrary N A N A comment containing upto 30 ASCII characters Output the displayed image to controller external Outputs the screen N A N A USB memory image display in gif format Contact Check ON OFF Available Available N A Key lock ON OFF Available Available Available 230 Appendix B Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A Function E4981A 4268A 4288A Beeper ON OFF Can turn ON OFF the Can turn ON OFF the Can turn ON OFF the beep output beep output beep output Beep mode setup Selectable from beep N A N A tone to 5 Beep Produces beep sound N A N A Comparator Beep condition Sets the condition for Sets the condition for Sets the condition for producing beep sound producing beep sound producing beep sound External GPIB Addre
171. ment ranges For 120 Hz measurement For 1 kHz measurement signal For 1 MHz measurement signal frequency frequency signal frequency 1 pF 2 2 pF 4 7 pF 10 pF 22 pF 47 pF 100 pF 220 pF 470 pF 100 pF 220 pF 470 pF nF 2 2 nF 4 7 nF nF 10 nF 22 nF 47 nF 10 nF 22 nF 47 nF 100nF 220nF 470nF 100nF 220 nF 470 nF 1 uF 2 2uF 4 7uUF 1 uF 2 2 UF 4 7 uF 10 uF 22 uF 47 uF 10 uF 22 uF 47 uF 100uF 220uF 470uF 100 uF 1 mF The procedure to set up the measurement range mode is described below 64 Chapter 4 Setting up Measurement Conditions and Display Selecting Measurement Range Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor key to select the RANGE field Step 3 Use the numeric keys or following softkeys Softkey Description AUTO Sets the measurement range mode to AUTO HOLD Sets the measurement range mode to HOLD INCR Increments the measurement range in the HOLD mode DECR Decrements the measurement range in the HOLD mode B OW oo Ba 25 zo e c 3 o O v z 2 0 an og m o9 Bg lt 5 Chapter 4 65 Setting up Measurement Conditions and Display Selecting Measurement Time Selecting Measurement Time NOTE Measurement time of 1 2 4 6 and 8 are available in E4981A For details on the actual measurement time refer to Measurement time on page 199 Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor keys to select MEAS TIME fi
172. ments the time from 0 to 45 in steps of 15 When the time is minus increments the time from 45 to 0 in steps of 15 MINUTE DECR When the time is plus decrements the time from 45 to 0 in steps of 15 When the time is minus decrements the time from 0 to 45 in steps of 15 HOUR DECR Decreases the time up to 12 in steps of 1 NOTE When the E49814A is returned to the factory default settings the time zone setting is also initialized 82 Chapter 4 Setting up Measurement Conditions and Display Configuring the System Date Configuring the System Date Functional Description The E4981A features a built in clock NOTE Configure the system date after Configuring the Time Zone on page 82 To configure the system date Step 1 Press System Step 2 Press SYSTEM CONFIG softkey Step 3 Use the cursor keys to select the DATE TIME field Step 4 Use the following softkey Softkey DATE TIME Description Selects the date field so that you can change the year month and day Selects the time field so that you can change the hour minute and seconds digit Step 5 If you have selected the date field use the following keys to edit the year month and day If you have selected the time field proceed to Step 7 Softkey YEAR MONTH DAY Description Allows you to change the year digit Allows you to change the month digit Allows you to change the day digit Step 6 E
173. ms to check if you encounter a problem while using the Keysight E4981A All of these items should be carefully investigated before you determine that your E4981A instrument is faulty 219 Troubleshooting Check Items When Trouble Occurs Check Items When Trouble Occurs The instrument does not start up nothing is displayed o Check if the power cable is disconnected o Check if the fuse is blown If normal operation does not resume after taking the above measures there is the possibility of a failure Unplug the power cable immediately and contact Keysight Technologies s Customer Contact listed at the end of this guide or the company from which you bought the device The system starts up but the normal measurement screen does not appear Service Mode The Service Mode is a state that occurs when the power on test fails Here the characters on the display turn yellow and all of the front panel keys are unavailable o Confirm that the power on test or a self test has failed When the power on test at start up fails the error message Power on test failed is displayed in the system message area For details on the Service Mode refer to the Service Guide When the normal measurement screen does not appear there is the possibility of a failure Contact Keysight Technologies s Customer Contact listed at the end of this guide or the company from which you bought the device An overload message OVLD is displaye
174. n Sample Calculation of Measurement Accuracy When measurement parameter is Cp G The following is an example of calculating the accuracy of Cp and G assuming that measured result of Cp is 8 00000 nF and measured result of G is 1 00000 US The accuracy of Cp is the same as that in the example of Cp D From Table 10 6 the equation to calculate the accuracy of G is 3 5 2 0e0K ooCx Substitute K 2 5 same as Cp D and 8 00000 nF of the measured Cp result into this equation The accuracy of G is 3 542 0992 5 e98 00000268 nS 0 068 US Therefore the true G value exists within 1 00000 0 068 uS that is 0 932 US to 1 068 LS When measurement parameter is Cp Rp The following is an example of calculating the accuracy of Cp and Rp assuming that measured result of Cp is 8 00000 nF and measured result of Rp is 2 00000 MO The accuracy of Cp is the same as that in the example of Cp D From Table 10 6 the equation to calculate the accuracy of G is 3 54 2 0e9K eeCx Substitute K 2 5 same as Cp D and 8 00000 nF of the measured Cp result into this equation The accuracy of G is 3 5 2 0c2 5 e08 00000 68 nS Then substitute the obtained G accuracy into the equation specified in Table 10 6 The accuracy of Rp is 3 2e9109 25968e5109 1 F 2 x 10 696899109 0 2720010 1 0 136 that is 0 23944 MQ to 0 31481 MQ Therefore the true Rp value exists within 1 76056 MQ to 2 31481 MQ When measurement parameter is Cs Rs The following
175. n of each error message and its remedy Errors with a negative error number are basically general errors defined by IEEE488 2 for GPIB instruments On the other hand errors with a positive error number are defined specifically for the E4981A 1 100 1 MHz opt not installed This error occurs when cable correction commands are sent to E4981A with Option 002 via GPIB LAN USB This error is not generated with front panel operation A A1 EEPROM write error An error is generated while writing data to Al EEPROM Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device B Block data not allowed A block data element has been received where the E4981A does not accept any block data element C Correction Measurement Aborted This error occurs when the correction data measurement is aborted CPU bd FLASH ROM write error An error is generated while writing data to FLASH Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device CPU bd EEPROM write error An error is generated while writing data to EEPROM Contact Keysight Technology s Sales and Service Office or the company from which you purchased the device 240 Appendix D 100 140 148 104 222 230 123 170 178 200 Error Messages Error messages alphabetical order Command error A comprehensive syntax error has occurred for which the
176. n the cursor is moved to a certain field the field changes to an inverse video image of the original The cursor can be moved from field to field right and left or up and down 3 The softkey labels corresponding to the field indicated by the cursor are displayed automatically Press the desired softkey m Use the entry keys to input numeric data When one of the entry keys is pressed the fe softkeys will change to the available unit softkeys Pressing these unit softkeys E terminates numeric input The unit changes according to the field selected How to Use Cursor Keys Move the cursor to the desired field using the cursor keys as shown in Figure 2 5 Figure 2 5 Cursor keys and a field operation example a AUTO FUNC iCp Rp RANGE AUTO FREQ 1kz eveL 1v n MEAS TINE 8 Cp 30 43195 pF wm Rp 212 6291 kQ v VMON 26 3827 uV IMON 124 181 p CH SINGLE CORR m OPEN esee men NTLLL A4 e4981aue0019 Chapter 2 39 Figure 2 6 Overview Basic Operation How to Use Skip Keys The following describes how to use a skip key On a display page three lines are collected together as one By using a skip key you can select the desired field quickly as the selected field moves from area to area Skip key and a field operation example lt MEAS SETUP USER COMMENT FUNC Cp D RANGE FREQ 1 kHz 3 LE d MEAS TIME 6 TRIG SYNC SR
177. nce Meter 4 Terminal Pair Structure 4288a0e134 Appendix E 255 Figure E 9 Figure E 10 Technical Information Basic Principles of Capacitance Measurement Contact resistance Due to contact resistance between the DUT contacts and the DUT itself a measurement error occurs when measuring large capacitance values especially for measurement of D dissipation factor For measurement of large capacitance values the four terminal pair measurement method has an advantage over the two terminal method in that measurement errors are smaller Select a four terminal measurement test fixture that can secure the DUT to stabilize the connection and minimize contact resistance Configuration of Contacts cR Leor Heer Heur c Leor Heor Heur DUT A 2 Terminal Pair Measurement Method B 4 Terminal Pair Measurement Method Extending the test leads If you cannot make measurement contact with the four terminal pair structure use the connection method shown in Figure E 10 Measurement Contacts When Test Leads Are Extended Shielded 2 Terminal Connection Heu E H sem Connector Plate ror Louf BNC Terminal 4288206135 256 Appendix E Figure E 11 Figure E 12 Technical Information Basic Principles of Capacitance Measurement Guarding when measuring small capacitance When measuring small capacitance valu
178. nce is small Therefore the effect of Rs is greater than that of Rp In this case use the series equivalent circuit model shown in Figure E 6 b Selection of Capacitance Measurement Circuit Model a Small C High impedance LCOe 1003 Appendix E b 3 c Rp Large C gt Low impedance Significant Not significant Rp Not significant Significant 253 Figure E 7 Technical Information Basic Principles of Capacitance Measurement Principle of four terminal pair measurement Generally in connection methods using common terminal structures mutual inductance interference between measurement signals and unnecessary residual elements especially at higher frequencies significantly affect measurements The E4981A adopts a four terminal pair structure to reduce the limitations on measurements due to these factors and to facilitate stable and accurate measurements Figure E 7 illustrates the principle of four terminal pair measurement The UNKNOWN terminals are four coaxial connector terminals e Hcyr Current high terminal e Hpor Voltage high terminal e Lpor Voltage low terminal Lcug Current low terminal Principle of Four terminal Pair Measurement Output Resister Auto Balance Bridge 4288206137 The four terminal pair measurement method has advantages in both low and high impedance measurements The outer shield conductors serve as the return pa
179. nce mode a gt Q 2 Setup procedure for the limit range designation method and reference value Step 1 Press Meas Setup Step 2 Press LIMIT TABLE softkey Step 3 Use the cursor keys to select MODE field Step 4 Use the following softkeys Softkey Function OFF Switches the comparator into absolute mode AABS Switches the comparator into tolerance mode based on absolute value A96 Switches the comparator into tolerance mode based on deviation percentages Step 5 Use the cursor keys to select NOM field to set the reference value for absolute tolerance mode or percent tolerance mode Step 6 Enter the nominal value using the softkeys or entry keys If you use the entry keys to enter the value the softkey labels change to unit labels p n u m x1 Softkey Function INCR Increments the nominal value in steps of your selected number 1 2 5 10 20 50 100 200 500 INCR Increments the nominal value in steps of 1 DECR Decrements the nominal value in steps of 1 DECR Decrements the nominal value in steps of your selected number 1 2 5 10 20 50 100 200 500 Chapter 7 137 Figure 7 1 Table 7 1 Figure 7 2 Table 7 2 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Relationship between the limit range designation method and the setup value Table 7 1 and Table 7 2 compare the setup values between the limit designation methods when setting up the
180. nd secondary parameter limit range Limit range designation method Reference value for the tolerance mode Execution procedure Press Meas Setup Press LIMIT TABLE softkey Use the cursor keys to select BIN field Press CLEAR TABLE softkey to clear the limit ranges lt LIMIT TABLE SETUP FUNC Cp D NOM 1 nF BEEP FAIL ANODE 4 AUX ON COrP ON ji LOW HIGH amp OFF OFF 2nd ON 1 2 Ei 4 B 5 7 8 9 OOTTT TOWN Use softkeys to select e4981auj0017 136 Chapter 7 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Selecting a limit range designation method Two methods can be used to designate the limit ranges for the primary parameter BINI to BINO One is to designate the limit boundary value using an absolute value absolute mode and the other is to designate it using a relative value deviation from the reference value nominal value tolerance mode The tolerance mode is further divided into a method to designate the deviation using an absolute value absolute tolerance mode and a method to designate the deviation using the percentage of the reference value percent tolerance mode NOTE Only the absolute mode can be used to designate the secondary parameter limit range OCN Mode E go TE Off Absolute mode 9 ge Sawn D AABS Absolute tolerance mode RE d EA Tolerance mode ago A Percent tolera
181. ndard When the environmental temperature around the Capacitance meter is kept within the temperature range of the operating environment specifications Operating Environments on page 20 The Capacitance meter still conforms to the requirements of the safety standard it is installed with the following cooling clearance Requirements Back 180 mm Sides 60 mm both right and left Ventilation space at installation e4981aue0023 Chapter 1 21 4 c o D e a Q D a UV o o D 8B e 2 Unpacking and Preparation Environmental Requirements Protection Against Electrostatic Discharge ESD Figure 1 2 shows the setup for a static safe work station to protect the electronic components from damage by electrostatic discharge ESD Figure 1 2 Example of a static free work station Building Ground 1MegOhm Resistor Ensuring Adequate Free Space around the Capacitance meter for Immediate Disconnection of the Power Cable in Case of Emergency As described in Disconnecting from the Supply Source on page 28 the plug attached to the power cable serves as the disconnecting device device that cuts off the power supply for the E4981A When installing the E4981A ensure that there is sufficient free space around the unit to permit quick disconnection of the plug fro
182. nel Names and Functions of Parts Do not apply DC voltage or current to the UNKNOWN terminals Applying DC voltage or current may lead to device failure Connect the measurement sample DUT to the test port or the test fixture cables etc connected to the test port after the Capacitance meter has been completely discharged The maximum load the UNKNOWN terminals can withstand is 10 kgf nominal The test ports comply with Installation Category I of IEC 61010 1 10 Front USB port This port is used to save data in a USB memory Connector types Universal Serial Bus USB Jack Type A four contact points Female Compliance Standards USB 1 1 Do not connect any device other than a USB memory to the USB port We do not support connections to the USB port of printers devices with a built in HDD or USB hubs To print a screen refer to Saving a Screenshot into USB Memory on page 100 Do not unplug the USB memory while the USB indicator is on USB memory type Use USB memory that is USB mass storage class compliant and formatted with FAT16 or FAT32 For points to notice refer to USB Memory Notes on page 89 Interface USB 1 1 11 Ground terminal Connected to the chassis of the E4981A 12 Synchronous Clock The internal clock signal is outputted Chapter 2 33 Io lt 0 lt D Overview Rear Panel Names and Functions of Parts Rear Panel Names and Functions of Parts This section describ
183. ner Interface The interface to connect a scanner to perform up to 256 sets of multi channel corrections and measurements Connector type 14 pin Amphenol 9 GPIB Interface Connector General Purpose Interface Bus GPIB The connection of an external controller and other devices through this connector allows you to configure an automatic measurement system 36 Chapter 2 Overview Screen Area Names and Functions of Parts EE Screen Area Names and Functions of Parts This section describes the names and functions of parts on the E4981A s LCD screen Figure 2 3 Screen display 2 Comment Line Area 1 Display Page Area KMEAS DISPLAY MEAS 3 Softkey FUNC Cp Q RANGE AUTO DISPLAY Area FREQ 1 kHz LEEL 1y BIN MEAS TINE 8 No 4 Measurement Data Condition Area _ Cp 171 1202 pF ae 0 0 24 YMON 29 4815 pY IMON 137 541 p CH SINGLE DISPLAY CORR Am OPEN BLANK Io lt 0 lt D al LF e 7 Status Display Area Input 7 softkeus to select Area B System Message Area e4981aue0017 1 Display Page Area Shows a display page name of the current display page 2 Comment Line Area You can input up to 30 characters in ASCII format by using the front panel or the DISPlay LINE command of the SCPI command The first 22 characters are displayed in this area Comment line is displayed on MEAS DISPLAY BIN No DISPLAY BIN COUNT DISPLAY and MEAS SETUP display page
184. ng Using this feature you can maintain a constant level voltage of measurement signals applied to the DUT SLC is available on e 120 Hz 220 uF 470 uF 1 mF range e 1 kHz 22 uF 47 uF 100 uF range For all other range frequency SLC is not executed even if LVL COMP is ON To set up the signal level compensation feature Press Meas Setup Use the cursor keys to select the LVL COMP field Use the following softkeys Softkey Description ON Turns ON the signal level compensation feature OFF Turns OFF the signal level compensation feature Level error of the signal level compensation function Even if you use the signal level compensation function signal level drop occurs at larger capacitance with larger D refer to Signal Level Compensation SLC function on page 202 In E4981A the AC level monitor is always ON The status in which capacity further increases and the output current of the signal source approaches the limit approximately 1 Arms is judged as overload In this case OVLD appears on the display Executing signal level check When level error becomes over 10 If the applied signal level for DUT is dropped more than 10 from the setting level the following error occurs e When both SLC and contact check are ON generates contact check error When SLC is ON and contact check is OFF generates OVLD overload error For more information on contact check refer to Setting up Contact Check on p
185. nter the year month day using the softkeys or entry keys If you use the entry keys to enter the value the softkey labels change to unit labels x1 Softkey YEAR INCR YEAR DECR MONTH INCR MONTH DECR DAY INCR DAY DECR Chapter 4 Description Increments the year in steps of 1 Decrements the year in steps of 1 Increments the month in steps of 1 Decrements the month in steps of 1 Increments the day in steps of 1 Decrements the day in steps of 1 83 B QOO D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 Setting up Measurement Conditions and Display Configuring the System Date NOTE When you enter the year through the entry keys use a four digit value Step 7 If you have selected the time field use the following keys to edit the hour minute and second digits Softkey Description HOUR Allows you to change the hour digit MINUTE Allows you to change the minute digit SECOND Allows you to change the second digit Step 8 Enter the hour minute second using the softkeys or entry keys If you use the entry keys to enter the value the softkey labels change to unit labels x1 Softkey Description HOUR INCR Increments the hour in steps of 1 HOUR DECR Decrements the hour in steps of 1 MINUTE INCR Increments the minute in steps of 1 MINUTE DECR Decrements the minute in steps of 1 SECOND INCR Increments the second in steps of 1 SECOND DECR Decrements the second
186. o Whenthe MULTI correction is ON check that the channel and the definition method of the LOAD standard value are selected correctly Saving to USB memory fails Some USB memory does not work with the E4981A For more information on USB memory refer to USB interface port on page 204 An error message or warning message is displayed For information on error messages and warning messages refer to Appendix D Chapter 12 221 Troubleshooting Check Items When Trouble Occurs During Remote Control Check Items When Trouble Occurs During Remote Control The instrument does not respond to the external controller or malfunctions o Check that the GPIB address for a GPIB connection or the IP address for a LAN connection is set up correctly on the SYSTEM CONFIG screen of the E4981A o Check that the GPIB cable USB cable and LAN cable are not disconnected o Check whether another instrument connected by the GPIB or LAN cable has the same GPIB address or IP address o Check that the GPIB cable connection is not looped You cannot read out the measured value o Check that the data transfer format is set up correctly An error message is displayed o Check that the program is correct For details on error messages refer to Appendix D 222 Chapter 12 d z D 2 en D o 2 D 2 e D n Manual Changes This appendix contains the information required to adapt this manual to earlier versions or configurations o
187. o an application program running on a PC Data buffer 3 is used to perform save data operation through front panel and web server Also it is not possible to load data through web server Before saving measurement results into USB memory you need to complete some tasks preparatory to initiating measurement so that the data buffer memory contains the necessary data For more information see To save measurement results into USB memory on page 98 You cannot load measurement results from USB memory into the E4981A 96 Chapter 4 Table 4 10 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Measurement Result Format Measurement results are output in the format shown in Table 4 10 The Data A and Data B fields of a measurement result file differ depending on whether the effective digits setting is on or off controlled by the FORMat ASCii LONG command Measurement Result Format Measurement Comparator Result Format Screen one point OFF Data A gt lt Data B gt lt Status gt one point ON lt Data A gt lt Data B gt lt Status gt lt BIN No gt Data A Outputs the measurement data for the primary parameter The Data A field uses the following two different fixed length ASCII formats When the effective digits SN NNNNNESNN setting is off FORMat ASCii LONG OFF S 4 N 0 to 5 E exponent character When th
188. o select the MULTI field Use the following softkeys Softkey Function ON Turns ON the multi correction function OFF Turns OFF the multi correction function 164 Chapter 9 Step 1 Step 2 Step 3 Step 4 Step 1 Step 2 Step 3 Step 4 NOTE Using Scanner Interface Using Multi correction Function Selecting a channel Making a selection using the front panel The procedure to select a channel using the front panel keys is given below Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the CH field Use the softkeys or numeric entry keys to enter the channel number When data is entered using the numeric keys the softkeys change to units labels x1 Softkey Function INCR Increments the channel number in steps of 10 INCR Increments the channel number in steps of 1 DECR Decrements the channel number in steps of 1 DECR Decrements the channel number in steps of 10 Making a selection using the scanner interface To select a channel through the scanner interface use the CHO CH7 and CH_VALID signals For information on these signals refer to Input Output Signal Pin Assignment on page 168 A channel number is expressed in binary notation by the HIGH level 0 LOW level 1 of the CHO CH7 signals The CH7 signal is the most significant bit and the CHO signal is the least significant bit For example if the CH7 signal is LOW and the CHO CH6 signals are HIG
189. o the comment line USER COMMENT field on the Measurement Conditions screen For information on how to enter a comment see Inputting Comment line on page 61 Saving Recalling Instrument Configuration States into from the Internal Memory Figure 4 5 shows the fields available on this page along with the softkeys corresponding to them CATALOG page when saving instrument configurations into the internal memory lt CATALOG gt SAVE INT DATA SAVE COMMENT DISPLAY oe N B 1 2 8 E 5 6 7 8 9 CO CD CD CD CD CD CD CO CO COO m gt tad m softkeys to select e4381auj0018 To save configuration states into the internal memory Press Save Recall Use the cursor keys to select the MEDIA field Press INT softkey Use the cursor keys to select the No field 0 through 9 for your desired register Press SAVE softkey to save configuration states into the internal memory B On D 3 2 25 zo e es no v 20 an o D m Lo Bg lt 5 If you have selected the No field for a register that already contains configuration states new configuration states overwrite the existing ones To recall configuration states from the internal memory Press Save Recall Use the cursor keys to select the MEDIA field Chapter 4 93 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Step 3 Press INT softkey Step 4 Use th
190. ob aimee ede eu un m 130 Tips for Increasing Measurement Speed throughput 0 0 eee eee eee eee 131 Setting measurement time tol 1 tenie naa E eee eee m m 131 Setting measurement range mode to the fixed range 0 0 0 cece eee eee 131 Tumis OREdIiSplay a 2e ced vo hele ch ead ee ie iba ted ite De pi US ood bath bt the dais 131 Decreasing averaging Counts i score ds kinds e untek eed RE E RGIPREDHPSERPRRER IB EA C DRESSES 131 Setting the trigger delay time t0O0 2 cece eee nee 131 Reducing the waiting time for analog measurement 0 00 e eee ee eee 131 Turning off the Status Register Update llle 131 7 Sorting Based on Measured Results Comparator Function Overview of Comparator Function 6 2 0 0 ee eet eee eee een eee 134 Turning ON OFF Comparator Function 0 0 2 0 0 t eens 135 Setup procedure i3 sss bns KER See Mee he RES ES RE RE E E E SE hp ds 135 Setting Up Sorting Judgment Conditions llle 136 Clearing resetting limitranges leeeleleeeeee ene EEEEES 136 Selecting a limit range designation method 0 2 0 0 0 0 cece eee 137 Setting up limit ranges oortes teyr ees eene da oe ee ke er Ree makes Ra ec ee Vies RE or ed 139 Setting up AUX function iic e eee nde per bie eb Rune ede t det reden E nice 142 Rejecting Excessively Low Measured Results Low C reject function 00000005 143 Turning ON OFF Low C reject function
191. oftkey Use the cursor key to select the FUNC field as shown in Figure 3 3 Press the Cp or Cs softkey to select the primary parameter Primary parameter selection menu screen lt MEAS DISPLAY FUNC Cp D RANGE AUTO FREQ 1 kHz LEVEL 14 MEAS TIME 6 Cp 216 6557 pF D 0 126469 VHON 24 4889 py IMON 33 682 p CH SINGLE CORR Bm OFF Use softkeys to select e4981auj0004 46 Chapter 3 Getting Started Learning Basic Measurement Procedure Step 5 Press the softkey to select the secondary parameter as shown in Figure 3 4 Figure 3 4 Secondary parameter selection menu screen XHEAS DISPLAY FUNC p D RANGE AUTO FREQ 1 kHz LEVEL 1 MEAS TIME 6 Cp 190 7311 pF D 0 243971 VMON 39 3853 uV IMON 48 5837 p CH SINGLE CORR Bm OFF Use softkeys to select e4981auj0005 e e D a o D m D a Chapter 3 47 Figure 3 5 Step 1 Step 2 Step 3 Step 4 NOTE Getting Started Learning Basic Measurement Procedure Setting up measurement signal frequency Set up the frequency of the signal applied to the DUT capacitor during measurement Press Display Format key Press the MEAS DISPLAY softkey Use the cursor key to select FREQ field Use the softkeys or entry keys to enter the frequency When data is entered with the numeric entry keys the softkeys change to unit labels Hz kHz MHz for Option 001 and Hz kHz for Option 002 Measurement s
192. oftkey to enter your text in the USER COMMENT field Chapter 4 61 B On D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 NOTE Setting up Measurement Conditions and Display Setting Up Measurement Signals frequency and level Setting Up Measurement Signals frequency and level Setting up frequency You can set the frequency of the measurement signal applied to the DUT as either 120 Hz 1 KHz or 1 MHz In Option 002 1MHz frequency is not available Setup procedure For details on setup procedure refer to Setting up measurement signal frequency on page 48 Setting up level You can set up the level of the measurement signal applied to the DUT within a range of 0 1V to 1 0 V in steps of 10mV Setup procedure For details on setup procedure refer to Setting up measurement signal level on page 49 62 Chapter 4 NOTE Step 1 Step 2 Step 3 NOTE Setting up Measurement Conditions and Display Setting Up Measurement Signals frequency and level Setting up Signal level compensation SLC function Functional Description If the impedance of DUT is small then the output resistance of the signal source the resistance of the measurement cable can cause the voltage applied to the DUT to decrease below the specified voltage of the signal source The signal level compensation feature adjusts the voltage across the DUT to the same level as the signal voltage level setti
193. on The procedure to select the definition method of the LOAD correction standard value LOAD correction reference value is given below Press Meas Setup Press CORRECTION softkey Use the cursor keys to select the LOAD REF field Use the following softkeys Softkey Function SINGLE Defines a single LOAD correction standard value commonly applied to all channels MULTI Defines a LOAD correction standard value for each channel Measuring OPEN SHORT LOAD correction data The procedure to measure OPEN SHORT LOAD correction data for multi correction is the same as that for the usual correction data except that you need to select a proper channel before the measurement For more information refer to Obtaining correction Data on page 108 When you measure the OPEN SHORT LOAD correction data with the multi correction function ON the measured value is stored as the correction data for the channel selected at the time of measurement For information on the structure of the correction data refer to Structure of data for OPEN correction on page 108 Structure of data for SHORT correction on page 110 and Structure of data for LOAD correction on page 114 Checking OPEN SHORT LOAD correction data The procedure to check OPEN SHORT LOAD correction data for multi correction is the same as that for the usual correction data except that you need to select a proper channel before the measurement For more information refer to Checking
194. onditions set up at execution are used for measurement NOTE Auto Range during the measurement of Load Standard can be also be set to ON OFF by LOAD RNG under CORRECTION softkey Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Measurement procedure Connect the standard for the LOAD correction to the test fixture Press Meas Setup Press CORRECTION softkey to display the correction page Use the cursor keys to select the LOAD field Press the MEAS LOAD softkey The data for the LOAD correction is then measured During the measurement an LOAD measurement in progress message is shown on the display When the measurement has finished the LOAD measurement in progress message disappears e During the measurement the ABORT softkey is shown Use this key when you want to abort load correction When measurement of the data for LOAD correction is successfully completed the LOAD Chapter 5 115 m x lt D Q en ez 2 Q eO ie x D Q g 2 1ueujaJnseo v o9je1noov JO uonejedoaug G NOTE NOTE Step 7 Step 8 NOTE Preparation for Accurate Measurement Executing Correction Obtaining correction Data correction turns to ON If the difference between the measured value and definition value of the standard for the LOAD correction exceeds 1046 not suitable for the data for LOAD correction the warning message Out of limit appears Even if th
195. or SHORT correction refer to Checking data for SHORT correction on page 55 Setting up data for SHORT correction You can setup the data for SHORT correction by the following procedure Press Meas Setup key Press CORRECTION softkey Use the cursor keys to select the SHORT R X field Select R X or Ls Rs which you required Use the right cursor keys to select A field Input your desired value for the primary parameter for SHORT Use the right cursor keys to select B field Input your desired value for the secondary parameter for SHORT Chapter 5 119 m x lt D Q E 2 Q e x Q ze 2 1ueujoaJnseo v 9je1noov JO uonejedaujg G Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Preparation for Accurate Measurement Executing Correction Checking displaying Setting up correction Data Checking displaying setting up data for LOAD correction Displaying data Selecting parameter format for LOAD correction The parameter format of LOAD correction data depends on the parameter format of the standard value for the LOAD correction and cannot be selected independently Refer to Defining standard for LOAD correction setting up LOAD reference value on page 112 Setting up data for LOAD correction You can setup the data for LOAD correction by the following procedure Press Meas Setup key Press CORRECTION softkey Use the cursor keys to select the LOAD Cp D f
196. ormation on the concept and implementation of automatic configuration by use of a LAN refer to Programming Manual Softkey Description AUTO Automatically obtains the IP address MANUAL Manually configures the IP address IP address configuration methods Method Description AUTO IP You can automatically obtain an available IP address MANUAL You can manually configure the IP address as well as subnet mask and gateway settings a Consult your network administrator for relevant settings of your network Once you have automatically obtained an IP address you can check the following monitor areas in the SYSTEM CONFIG page to see the address subnet mask and gateway CURRENT IP ADDR CURRENT SUBNET MASK CURRENT GATEWAY To automatically obtain the IP address Press System Press SYSTEM CONFIG softkey When you want to obtain the IP address automatically select the IP CONFIG field using the cursor keys and then press the AUTO softkey To manually configure the IP address Press System Press SYSTEM CONFIG softkey 86 Chapter 4 Table 4 7 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 Step 1 Step 2 Step 3 Setting up Measurement Conditions and Display Configuring the LAN IP address Use the cursor keys to select the IP CONFIG field and then press the MANUAL softkey Use the cursor keys to select the MANUAL IP ADDR field
197. ou can disable entry from the front panel keys key lock function to avoid improper input caused by touching the front panel keys accidentally The ON OFF state of the key lock function is indicated by whether LOCK is displayed in the status display area When LOCK is displayed as indicated by 1 in Figure 11 1 the function is ON ON OFF display of the key lock function when ON KMEAS SETUP USER COMMENT m FUNC Cp D RANGE 1 nF SETUP FREQ 1 MHz LEVEL 188 my CORREC MEAS TIME 8 AVG 25 TION TRIG INT SYNC SRC OFF TRIG DLY 3 1 ms SRCDLY 6 1 ms n ALC ON FREQ SHFT LOW C REJ OFF REF CLK INT E DEY OFF REF 18 nF CHECK B OFF E a mH TREE e4981auj0001 Setup procedure Press the Local Lock key on the front panel Confirm that LOCK is displayed in the status display area in the lower right corner of the LCD display During the cable correction correction or reference measurement all the key operations are invalid except the ABORT softkey and Local Lock 214 Chapter 11 Precautions for Use and Daily Checks Daily Checks Executing the self test Daily Checks Executing the self test This section describes the daily checks required for the E4981A p p NO oO cB 2S o On 2 Il o on a om 0 6 oO Self test at power on The E4981A provides a function that executes a self test automatically at power on When the self test detects any malfunction at power on an error message Power on test failed
198. preceding Os Refer to IEEE488 27 7 2 4 1 Appendix D 245 211 214 223 113 Error Messages Error messages alphabetical order Trigger ignored A trigger command or trigger signal has been received and recognized by the E4981A but it is ignored due to the timing relationship with the E4981A For example this happens when the E4981A s trigger system is not in the Waiting for Trigger state Trigger deadlock Indicates that the READ command was ignored because the trigger source setting was MAN or BUS Too much data The received block equation or string type program data complies with the standard but the amount of data exceeds the limit that the E4981A can handle due to memory or device specific conditions related to memory U Undefined header A header not defined for the E4981A has been received For example XYZ which is not defined for the E4981A is received 246 Appendix D Error Messages Warning Messages WARNING Warning Messages WARNING Warning messages are displayed to warn users They are displayed in the lower row of the display of the E4981A You cannot read them out using the GPIB command WARNING Need corr meas When the OPEN correction SHORT correction or LOAD correction is ON this is displayed when you change the setup of the cable length or measurement frequency shift 1 MHZ In this case the OPEN correction SHORT correction and LOAD correction are automatically turn
199. r SHORT correction is still used However you should recheck the connection between the test fixture and the UNKNOWN terminal and confirm that the SHORT correction procedure was done correctly If a measurement failure occurs while measuring the data for correction an error message appears on the screen NOTE If an error occurs the data for correction before the measurement remains without change Checking data for SHORT correction You can check the measured SHORT impedance value the data for SHORT correction The procedure is given below e e D a o D m D a Step 1 Press the Meas Setup key Step 2 Press the CORRECTION softkey Step 3 Use the cursor keys to select SHORT R X field as shown in Figure 3 12 OFFSET BF B 8 Figure 3 12 SHORT Correction Data CORRECTION E OPEN ON CABLE 8n SHORT ON MULTI OFF LOAD OFF LOAD REF SINGLE Ls Rs OFFSET OFF LOAD RNG AUTO CH a OPEN G B A 711 410 nS B 273 827 nS SHORT HEB A 745 05 kN B 271 382 k LOAD Cp D A BF B 8 REF OF B 8 Use softkeys to select e49812uj0013 Chapter 3 55 Getting Started Learning Basic Measurement Procedure Step 4 Use the following softkeys Softkey Description R X Displays the measured R X value on the screen Ls Rs Displays the measured Ls Rs value on the screen NOTE For information on measuring data for Load correction refer to Obtaining measuring data for LOAD correction on page 112
200. re 4 2 Measurement Signal Output Timing Synchronous Source Function ON 4 Source Delay Time Measurement Signal Index Halted Trigger Delay Time Trigger Signal Measurement Status Analog Meas erating Synchronous Source Function OFF Trigger Signal 4 tput E Measurement Signa ps Output continues Index Halted Trigger Delay Time Pata eke Digital Measurement Status Halted Analog Meas Computing e4981aue0043 B On D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 Chapter 4 71 Setting up Measurement Conditions and Display Setting up frequency shift Setting up frequency shift When two or more E49814A units are intergrated into a single system you can shift the 1 MHz measurement frequency by 1 196 0 2 or 2 to avoid interference between the measurement signals Setup procedure Step 1 Press Meas Setup Step 2 Use the cursor keys to select the FREQ SHFT field Step 3 Use the following softkeys Softkey Description 1 Shifts the 1 MHz measurement frequency by 1 1 Shifts the 1 MHz measurement frequency by 1 0 Shifts the 1 MHz measurement frequency by 0 2 Shifts the 1 MHz measurement frequency by 2 2 Shifts the 1 MHz measurement frequency by 2 NOTE For Option 002 the frequency shift function is not available 72 Chapter 4 e
201. rection Chapter 5 121 m x lt D Q E 2 Q e x Q ze 2 1ueujoaJnseo v 9je1noov JO uonejedaujg G Step 1 Step 2 NOTE Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Preparation for Accurate Measurement Executing Correction Obtaining cable correction data Obtaining cable correction data The procedure to obtain cable correction is described below Press System Press CABLE CORR softkey In Option 002 CABLE CORR softkey is not available on the SYSTEM INFO page Use the cursor keys to select from cable length of 1m or 2m Connect a 100pF capacitor 16383A or 1kQ resistor 42037A to the UNKNOWN terminals Press the MEAS REF softkey The data for the reference correction is then measured During the measurement the REF measurement in progress message is shown on the display When the measurement has finished the REF measurement in progress message disappears e During the measurement the ABORT softkey is shown Use this key when you want to abort reference correction Remove the standard capacitor resistor from UNKNOWN terminals Connect the cable length of 1m or 2m Connect the OPEN termination 42090A at the end of cable Press the MEAS OPEN softkey The data for the OPEN correction is then measured During the measurement an OPEN measurement in progress message is shown on the display
202. reduced to 0 7ms the measurement computation time is 1ms when status register is ON Chapter 6 131 Executing Measurement Tips for Increasing Measurement Speed throughput To turn OFF the register use STATus OPERation UPDate command Refer to the E4981A Programming Manual 132 Chapter 6 Sorting Based on Measured Results Comparator Function This chapter describes how to use the function that performs sorting based on the measured results comparator function 133 ynseH peunsee v uo peseg buos Z le fe 3 o D I RS fe E n en 2 o TR e Sorting Based on Measured Results Comparator Function Overview of Comparator Function Overview of Comparator Function The E4981A s comparator function lets you set up to 9 limit ranges for the primary parameter BIN1 to BIN9 and 1 limit range for the secondary parameter and sort DUTs into up to 11 categories BINI to BIN9 OUT OF BINS or AUX BIN If you need only simple pass fail judgment and do not need BIN sorting use the comparator function while setting up only 1 limit range for the primary parameter BIN1 and if necessary 1 limit range for the secondary parameter to judge whether the measured result of the DUT falls into the specified limit range You can specify the upper and lower limit values for the primary parameter with not only absolute values but also relative values deviation from the reference value nominal value The sort
203. rement results Step 6 Press SAVE amp STOP softkey to save results into the USB memory Step 7 When the data has been saved into the USB memory a Storing data completed E498xXXX csv message appears in the system message area Figure 4 7 Saving measurement results into USB memory Measurement Logging start START LOG Data Buffer Memory 7 Clear SAVE amp STOP Data output USB Memory e4980aue1150 NOTE Measurement result files are automatically assigned file names E498x001 csv through E498x999 csv and you cannot change the file names Chapter 4 99 B QOO D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 Setting up Measurement Conditions and Display Saving Recalling Instrument Setup State save recall function Saving a Screenshot into USB Memory You can save a screenshot of the E4981A s display into USB memory as a GIF file You can later load your saved file into an application program running on a PC To save a screenshot into USB memory Step 1 Display the screen you want to save Step 2 Plug a USB memory device into the front USB port Step 3 Press Save Recall Step 4 Press SAVE DISPLAY softkey Step 5 When the data has been saved into the USB memory device a Storing image completed EA498xXXX gif message appears in the system message area NOTE Screenshot files are automatically assigned file names E498x001 gif
204. s Cp G 0 0 eee een eee 212 When measurement parameter is Cp Rp 00 cee eee een eee 212 When measurement parameter is Cs RS 1 2 ect eee eens 212 11 Precautions for Use and Daily Checks Precautions for Uses ceres Cape desaethee ie heed et th eet ee es CY SPP VUES ONEQE NE 214 Avoiding improper input from the front panel key lock function 0 00 20 eee eee 214 Daily Checks Executing the self test 0 2 eee eee eens 215 Self test at POWEL OD sisi esc U see ERA WERE AURREG GRE Ce e eke dx EE ERE ER 215 Executing the self test from the front panel 0 0 ects 215 Cleaning this Instt m ent ve een Re yee oy 6os8 See herbe UR eke eee ERS TP eae ogee st 217 Unknown Terminals 9 RLEUPEDR ERRASSE AAA EAR RN PRA T 217 Cleaning Parts Other than Unknown Terminals 0 0 00 2c cece e 217 Cautions Applicable to Requesting Repair Replacement Regular Calibration etc 218 Caution when Sending the Unit 425422 ker RR E RET PR ERR an n nen by RESP ERE GG NY Y 218 Recommended Calibration Period 0 2 2 0 eee eee eee ees 218 12 Troubleshooting Check Items When Trouble Occurs 2 0 0 0 oe eee II 220 The instrument does not start up nothing is displayed 00 0 cece eee eee 220 The system starts up but the normal measurement screen does not appear Service Mode 220 An overload message OVLD is displayed when nothing is connected to the UNKNOWN t
205. s correction is based on the results of impedance measurement in the SHORT state which is performed in advance SHORT correction can be performed at any frequency 120Hz 1 kHz 1MHz and the correction data remains valid for all measurement frequencies LOAD correction Corrects complex errors related to amplitude phase errors the scanner and other factors caused by the cable and test fixture This correction is based on the results of impedance measurement of the standard having a known value which is performed in advance LOAD correction is frequency dependent and the correction data remains valid only for the measurement frequency at which the LOAD correction is applied If the frequency is changed the LOAD correction needs to be performed again OFFSET correction Corrects errors between the actual measured value and the ideal value that the user desires This is done by subtracting any value that the user enters from the measured result for example difference between a known standard value and its measured value or instrument by instrument differences in the measured values of the same DUT NOTE In Option 002 there is no correction for IMHz frequency 102 Chapter 5 Preparation for Accurate Measurement Executing Correction Overview of Correction Function As shown in the data processing flow of Figure 5 1 the OPEN SHORT LOAD correction is first performed for the measured impedance result comp
206. s then measured During the measurement a SHORT measurement in progress message is shown on the display e When the measurement has finished the SHORT measurement in progress message disappears e During the measurement the ABORT softkey is shown Use this key when you want to abort short correction The data for SHORT correction is stored as data for all the measurement frequencies When measurement of the data for SHORT correction is successfully completed the SHORT correction turns to ON as shown in Figure 3 11 Screen upon completion of measuring data for SHORT correction lt CORRECTION gt OPEN ON CABLE Bm SHORT i MULTI OFF LOAD OFF LOAD REF SINGLE OFF OFFSET OFF LOAD RNG AUTO CH a IN OPEN amp B 711 419 nS B 273 827 nS SHORT R X 745 05 kQ B 271 382 kf LOAD Cp D BF B 8 REF BF B 8 OFFSET OF B 8 e49381auj0012 54 Chapter 3 Getting Started Learning Basic Measurement Procedure Description of Softkeys To enable disable or otherwise control the behavior of short correction use the following softkeys Softkey Description ON Enables short correction OFF Disables short correction MEAS SHORT Starts short correction If SHORT impedance IZsl JR X is greater than 20 Q an unsuitable level for the data used in SHORT correction the warning message Out of limit appears on the System message area on the screen NOTE Even if this warning message appears the data fo
207. s valid 128 Chapter 6 Executing Measurement Tips for More Accurate Measurement Tips for More Accurate Measurement You can use the following techniques to increase measurement accuracy 9 m x lt D Q en zn 2 Ke D iR en o E D Setting measurement time to 8 Set the measurement time to 8 which provides better measurement accuracy For the setup procedure refer to Selecting Measurement Time on page 66 Selecting an appropriate measurement range When making a measurement in the fixed range mode select the measurement range so that measurement is performed within the recommended range refer to Table 10 2 on page 181 Table 10 3 on page 182 and Table 10 4 on page 182 For the setup procedure refer to Selecting Measurement Range on page 64 Using the correction functions The OPEN correction eliminates the error due to the parallel stray admittance of the measurement cable and test fixture The SHORT correction eliminates the error due to the series residual impedance of the measurement cable and test fixture The LOAD correction eliminates the complex error due to the amplitude phase error of the measurement cable and test fixture scanner and so on For details refer to Chapter 5 Preparation for Accurate Measurement Executing Correction Making stable measurement In a high noise measurement environment you can obtain more reliable measurement results by performing av
208. ss Sets the GPIB address N A N A Connector LAN setup Fixed IP address gateway Sets the static IP N A N A subnet mask address gateway address and subnet mask address AUTO IP Selectable from N A N A AUTO MANUAL IP configuration setup method LAN address gateway subnet mask status Returns the value of N A N A current IP address gateway address and subnet mask address MAC Address Returns the MAC N A N A address Reconnect after reset to factory state Presets the network N A N A settings and restarts the network Reconnection Restarts the network N A N A Socket Control Port number Returns the SOCKET N A N A control port number Internal Clock Date time time zone Sets the date time in the N A internal clock and configures the time zone Appendix B 231 VL8675 UM V88Zt V89cr w gt E fe E D um fe 2 pe fe S JJ oO D Q j e Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A 232 Appendix B Initial Settings This appendix provides initial settings settings that can be saved recalled and settings that can be backed up O 3 m n 6 4 5 Ko 7 233 Initial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up The columns of Table C 1 show the follo
209. stor of 2 27kQ When the drive source voltage is between 15V 24V the switch S3 is ON closed and current flows through the input signal resistor of 3 68kQ NOTE If the source voltage exceeds the available range the analog circuit in the hardware might be damaged 160 Chapter 8 NOTE Using Handler Interface Control Check the Handler Interface for Maintenance Control Check the Handler Interface for Maintenance To control check the Handler interface the Keysight E4981A provides several test commands related to various operations of handler interface This section explains the various test commands available in E4981A to check trouble the handler interface Starting Handler Interface Test Handler interface can be set into test mode by using the TEST HANDler MODE command When this command value is set to ON the handler interface pin signal value can be controlled read by TEST HAND xxxx commands Using Handler Interface Test Commands After setting the TEST HANDler MODE command value to ON the following commands can be used to control read the handler interface pin signal value e TEST HANDIler BIN sets the Handler Bin No e TEST HANDIer COMP sets the Handler Comparator Function value e TEST HANDler KEYLock gets the Handler Key Lock signal level as HIGH LOW e TEST HANDIler STATus ALARm sets the Handler Alarm signal to HIGH LOW e TEST HANDIler STATus EOM sets the Handler End of Measurement EOM
210. strument Herstellerbescheinigung GERAUSCHEMISSION LpA lt 70 dB am Arbeitsplatz normaler Betrieb nach DIN 45635 T 19 Manufacturer s Declaration ACOUSTIC NOISE EMISSION LpA 70 dB operator position normal operation per ISO 7779 Regulatory compliance information This product complies with the essential requirements of the following applicable European Directives and carries the CE marking accordingly The Low Voltage Directive 73 23 EEC amended by 93 68 EEC The EMC Directive 89 336 EEC amended by 93 68 EEC To obtain Declaration of Conformity please contact your local Keysight Technologies sales office agent or distributor Safety notice supplement This equipment complies with EN IEC61010 1 2001 This equipment is MEASUREMENT CATEGORY I CAT I Do not use for CAT II II or IV Do not connect the measuring terminals to mains This equipment is POLLUTION DEGREE 2 INDOOR USE product This equipment is tested with stand alone condition or with the combination with the accessories supplied by Keysight Technologies against the requirement of the standards described in the Declaration of Conformity If it is used as a system component compliance of related regulations and safety requirements are to be confirmed by the builder of the system NOTICE This document contains references to Agilent Technologies Agilent s former Test and Measurement business has become Keysight Techno
211. sult is set up as the data for normal operation when the multi correction function is OFF and as the data for multi correction when the function is ON for the channel that has been selected at execution 114 Chapter 5 Preparation for Accurate Measurement Executing Correction Obtaining correction Data The table below summarizes how data is set up depending on the setup at execution Setup of measurement Data signal frequency Multi correction 120 Hz correction data and 120 Hz cable length for normal 120 Hz operation 1kHz 1 kHz correction data and 1 kHz cable length for normal OFF operation 1 MHz correction data 1 MHz cable length and 1 MHz MEZ frequency shift for normal operation 120 Hz correction data and 120 Hz cable length for the 120 Hz channel selected at the time of multi correction measurement 1 kHz correction data and 1 kHz cable length for the channel 1 kHz ON selected at the time of multi correction measurement 1 MHz correction data 1 MHz cable length and 1 MHz 1 MHz frequency shift for the channel selected at the time of multi correction measurement Measurement conditions during data measurement The data for the LOAD correction is measured under the following measurement conditions Measurement range mode auto range mode or fixed range mode Measurement time mode 8 For other settings such as averaging and trigger delay the measurement c
212. t signal current LOW HIGH mA INDEX EOM 0 0 5 EXT DCV 6 EXT DCV 5V 15V 171 Chapter 9 ee jen n 2 e O D 2 D m D k iR e o Figure 9 4 Table 9 4 Using Scanner Interface Electrical Characteristics Circuit diagram of the scanner interface output signals Interface Board E4981 66537 Scanner interface connector FN lt INDEX al lt IEOM eat i lt COMMON Sif e4981aue0045 Input signal Each input signal is connected to the cathode side of the photo coupler LED The anode side of the LED is connected to the drive source voltage Table 9 4 shows the electrical characteristics of the input signals Figure 9 5 and Figure 9 6 show the circuit diagram of the input signals The amount of current flowing through the LED depends on the setups of the drive source voltage and the external trigger EXT TRIG signal resistance setup switch S1 S2 Electrical characteristics of the scanner interface input signals Input current LOW mA typical Input voltage V Input signal Pull up source voltage EXT DCV LOW HIGH 5V 9v 15V pain m 4 8 13 3 17 0 0 1 EXT_DCV EXT_TRIG 3 7 4 7 6 0 The current can be calculated by the following fomula Iz DCV Vf Low R Low 0V EXT_TRIG Vf 1 3V typical CHO ACH7 CH_VALID Vf 1 1V typical 172 Chapter 9 Us
213. ta 0 0 0 ce eee nee 119 Checking displaying setting up data for OPEN correction 00 00 eee eee eee ee 119 11 Contents Checking displaying setting up data for SHORT correction lllleeeees eese ees 119 Checking displaying setting up data for LOAD correction 0 000 eese 120 Avoiding Mistakes Related to Work in Obtaining correction Data 00 0000 00 00005 121 Using warning Messages cia esd a LE OR ee b EIE EET E RET ERE Y eee 121 Obtaining cable correction data 0 0 eee eee ene ae 122 Description of softkeys css eda deals E deret ie np deu eie ge ere re e tee edd 123 6 Executing Measurement Starting triggering Measurement lle rte 126 petting the trigger Tode LeciARLLSA E E sees eect heer LE DIU LL URS 126 Perform successive measurements automatically lees 127 Specifying measurement timing lese m e 127 Notes on inputting a trigger signal 2 eI 128 Tips for More Accurate Measurement 0 0 0 eect ete e eee 129 Setting measurement time to 8 s s sncscece e he eee URES ELE SSE MOE EEE MENS EES ERE 129 Selecting an appropriate measurement range Ie 129 Using the correction TUNCHONS 2 5 cane cerat ee Poe Sad RE PERERA REE OER SE REE EFE SR EX 6g 129 Making stable measurement 1 0 0 ec nett eben tenes 129 Making measurements using a four terminal pair 2 0 0 eee ees 129 Using Frequency Shit o e e EOS EE sa ete reser R
214. tates into from the Internal Memory 93 Saving Recalling Instrument Configuration States into from USB Memory 94 Using the Auto Recall Feature 0 RR eee 95 Saving Measurement Results into USB Memory 00 0 0 cece cee nee 96 Saving a Screenshot into USB Memory 0 0 cece eee ened 100 5 Preparation for Accurate Measurement Executing Correction Overview of Correction Function 0 0 0 0 ee I nen eens 102 OPEN SHORT LOAD OFFSET Correction llle e 102 Cable Correction cess ores I rop Re Y PPrS ER n EM E Ne due a Shane hund qt 104 Turning ON OFF Correction Functions 0 0 coe n 105 Turning on OPEN correction sioro merien cee eee rrr ye bebe bbe ens 105 Turning on SHORT cOrmection cec 50554 nee ee se EST a ee e RR ENEE PERE PMH OR 105 Turnng ON LOAD correctioD 4 26654 eae hh es teatr heed wie ene RE E Les beh ee SER eee kas 106 Turning ON OFFSET correction 06 0 eee eee cee b b be ew eb he oeb E neh eee ese 107 Obtaining correction Data 423054 SUPER ULPPUPUP RT ONDE Lure ETT tueur 108 Obtaining measuring data for OPEN correction 108 Obtaining measuring data for SHORT correction 2 0 0 0 2c eee e 110 Obtaining measuring data for LOAD correction lllseeeeeee e 112 Selecting Single Multiple Correction Mode llsleeeee eee 117 Setting up Data for OFFSET correction 0 0 02 ec I 118 Checking displaying Setting up correction Da
215. test mode by setting TEST SCANner MODE command value to OFF so that scanner interface pin signal is generated according to the actual measurement result 176 Chapter 9 10 Specifications and Supplemental Information This chapter gives the specifications and supplemental information of the Keysight E4981A 120 Hz 1 kHz 1 MHz capacitance meter 177 c5 en Ke D 3 D 2 v EI e im E D E ie 2 pue suomneoyiooeds OL Specifications and Supplemental Information Definitions Definitions All specifications apply to the conditions of a 0 C to 45 C temperature range unless otherwise stated and 30 minutes after the instrument has been turned on Specification spec Warranted performance Specifications include guard bands to account for the expected statistical performance distribution measurement uncertainties and changes in performance due to environmental conditions Supplemental information is intended to provide information that is helpful for using the instrument but that is not guaranteed by the product warranty Typical typ Describes performance that will be met by a minimum of 80 of all products It is not guaranteed by the product warranty Nominal nom A general descriptive term that does not imply a level of performance Option Dependencies The available frequency is defined as follows E4981A 001 120 Hz 1 kHz 1 MHz 1 MHz 1 1 MHz 2 E4981A 002 12
216. th of the measurement signal current not grounded Current of the same amplitude flows through the core conductor and the surrounding shield conductor in opposite directions and therefore no external magnetic field occurs around either conductor In other words the magnetic field caused by the inner conductor and that caused by the outer conductor cancel each other completely The measurement signal current does not cause any induction field and therefore the test leads do not increase the error due to their self inductance or the mutual inductance between different leads 254 Appendix E Technical Information Basic Principles of Capacitance Measurement Precautions for four terminal pair measurement This section describes general precautions and techniques for using the four terminal structure efficiently Measurement contacts To ensure high accuracy when using the four terminal pair measurement the measurement contacts must meet the following requirements Make the signal path between the capacitance meter and the DUT indicated by in Figure E 8 as short as possible e For a four terminal pair measurement circuit configuration the outer shields of the Hcug Hpor Lcug and Lpor terminals must all be connected at the nearest possible point to the DUT Refer to 2 in Figure E 8 Figure E 8 Measurement Contacts m o Q 2 O v e im 3 o n 2 2 Leot Heer Heur ER p GA Ga A Capacita
217. the auto range the measurement time is lengthened because a ranging time is required Therefore specify the fixed range for quicker measurements For the setup procedure refer to Selecting Measurement Range on page 64 Turning OFF display Turning OFF display can shorten the measurement computation time EOM The display time is shown in Measurement time on page 199 For the procedure to turn ON OFF the measurement result display refer to Turning ON OFF display on page 73 Decreasing averaging count If you use the averaging function set the averaging count to as small a value as possible For the setup procedure refer to Setting Up Averaging Count on page 68 Setting the trigger delay time to 0 If you do not need to use the trigger delay function confirm that the trigger delay time is set to 0 For the setup procedure refer to Setting Up Trigger Delay Time on page 69 Reducing the waiting time for analog measurement E4981A has the capability to reduce the waiting time for analog measurement The waiting time is included in the analog measurement time This is a system default measurement delay time When waiting time is reduced the measurement accuracy is not applied To set the waiting time use SENSe DETector DELay 1 3 command Refer to E4981A Programming Manual Turning off the Status Register Update When the status register is not used the measurement computation time can be
218. three wire power outlet with the grounding prong firmly held in the ground slot Use the supplied three wire power cable with a grounding wire to securely ground the E4981A A 3p 2p conversion adapter is not supplied with the Capacitance meter When you need a 3p 2p conversion adapter contact your nearest Keysight Technologies sales and service office listed in the back of this manual Power cord list 16000 99101 shows the power cable options 26 Chapter 1 Table 1 3 Step 1 Step 2 Step 3 Step 1 Unpacking and Preparation Starting the E4981A Starting the E4981A This section describes how to turn on off the E4981A power and how to cut off the power supply in an emergency jen O 5 9 z 2 Q 2 on U D O o 0 on ie 2 Turning the Power ON and OFF Turning the Power ON The ON and OFF status of the power switch O is confirmed by the color of the switch Color of the light Status of the power Orange Power off Yellow green Power on Light off Power off The power supply is cut off Confirm that the power switch light in the lower left part of the front panel is lit in orange If the light is off the power supply may also be off Press the power switch When the light of the power switch turns yellow green the power is turned ON and the E4981A starts the self test The self test takes approx 30 seconds Confirm that the self test in
219. ting the Measurement Signal only during the Measurement to Protect the Contact Pin Synchronous source function You can use this function to prevent large current from flowing through the contact pin at the moment of contact with DUT to avoid damaging the contact pin This function after a trigger outputs the measurement signal so that it is applied only during measurement synchronous source function Setup procedure Press Meas Setup Use the cursor keys to select the SYNC SRC field Use the following softkeys Softkey Description ON Turns ON the synchronous source function OFF Turns OFF the synchronous source function Use the cursor keys to select the SRC DLY field Use the following softkeys Softkey Description INCR Increments the source delay in steps of 1 ms INCR Increments the source delay in steps of 0 1 ms DECR Decrements the source delay in steps of 0 1 ms DECR Decrements the source delay in steps of 1 ms The specified source delay time to delay the start of signal output is valid only when the synchronous source function is ON When the source delay time and trigger delay time are both specified the source delay time precedes the trigger execution Figure 4 2 shows the measurement signal output timing 70 Chapter 4 Setting up Measurement Conditions and Display Outputting the Measurement Signal only during the Measurement to Protect the Contact Pin Synchronous source function Figu
220. tion is successfully completed the OPEN correction turns to ON as shown in Figure 3 9 Screen upon completion of measuring data for OPEN correction lt CORRECTION gt OPEN hn CABLE Bm SHORT OFF MULTI OFF LOAD OFF LOAD REF SINGLE OFFSET OFF LOAD RNG AUTO cH B OPEN amp B SHORT R X LOAD Cp D REF 711 419 nS B 273 827 nS Bn B 8g 188 nF B 8 188 nF B 8 mM DFFSET BF B 8 e49381auj0010 Description of Softkeys To enable disable or otherwise control the behavior of open correction use the following softkeys Softkey Description ON Enables open correction OFF Disables open correction MEAS OPEN Starts open correction If open admittance lYol JC ud is greater than 20 uS an unsuitable level for the data used in OPEN correction the warning message Out of limit appears on the System message area on the screen Even if this warning message appears the data for OPEN correction is still used However you should recheck the connection between the test fixture and the UNKNOWN terminal and confirm that the OPEN correction procedure was done correctly If a measurement failure occurs while measuring the data for correction the error message OPEN Measurement incomplete occurs If this error occurs the data for correction before the measurement remains without change Step 1 Step 2 Checking data for OPEN correction You can check the measured open admittance value data for the OP
221. tion output signals respectively Electrical characteristics of the handler interface output signals Output voltage V Maximum Output signal current LOW HIGH mA Judgment output signals 45 V to BINI BIN9 AUX BIN OUT OF BINS PHI 0 0 5 42A V 6 PLO SREJ OVLD LOWC OR NC Operation output signals 0 05 5 V to 6 INDEX EOM READY_FOR_TRIG ALARM i 24V 156 Chapter 8 Using Handler Interface Electrical Characteristics Figure 8 4 Circuit diagram of judgment output signals of the handler interface Handler Power interface Supply connector Pull up resisters ae i i i 3 E IOUT OF BINS IBIN1 IBIN8 IBIN9 IAUX BIN IPHI IPLO ISREJ 9 jen o a I D o D I a D D Q D ILOWC OR NC IOVLD COM1 e4981a0e0004 Chapter 8 157 Using Handler Interface Electrical Characteristics Figure 8 5 Circuit diagram of operation output signals of the handler interface Handler interface connector KON Pull up resisters IALARM INDEX IEOM IREADY FOR TRIG COM2 e4981a0e0005 158 Chapter 8 Using Handler Interface Electrical Characteristics Input signal Each input signal is s
222. ue limit value limit value limit value limit value BINI nF 1 02 nF 0 nF 0 02 nF 0 2 BIN2 0 97 nF 0 98 nF 0 03 nF 0 02 nF 3 2 BIN3 0 99 nF 1 03 nF 0 01 nF 0 03 nF 1 3 WARNING When the low limit value is greater than the upper limit a warning message Improper high low limits is displayed Chapter 7 139 e ie E O RV o gt e mi M en 2 Q a ie uns y peunseayy uo peseg uiuos 7 Sorting Based on Measured Results Comparator Function Setting Up Sorting Judgment Conditions Procedure to set up BIN1 to BIN9 ON OFF and lower and upper limit values Step 1 Press Meas Setup Step 2 Press LIMIT TABLE softkey Step 3 Use the cursor keys to select the BIN 1 field Step 4 Use the following softkeys Softkey Function ON Turns ON the bin function OFF Turns OFF the bin function Step 5 Repeat Step 3 to Step 4 using the cursor keys until you have turned ON the bin 9 Step 6 Use the cursor keys to select the BIN 1 LOW field Step 7 Enter the limit value using the entry keys When you enter the value the softkey labels change to unit labels p n u m x1 e You can clear your selected lower limit value by pressing the CLEAR softkey You can enter the lower limit value using the HIGHx 1 softkey e You can clear all the limit values and sets the status to OFF for your selected bin by pressing the CLEAR LINE softkey Step 8 Use the cursor keys to select the BIN 1 HI
223. uit etc occurs this becomes LOW For power supply interruption this stays LOW only while the power is down Analog measurement end signal When an analog measurement finishes this becomes LOW When the handler receives this signal you can connect the next DUT You cannot obtain the measurement data until the EOM signal is received Measurement cycle end signal When a series of measurement processes finishes and the measured data sorting judgment result becomes available this becomes LOW 32 33 COM2 Common pins for the external dc voltage EXT DCV2 pin numbers 14 and 15 34 35 36 COMI Common pins for the external dc voltage EXT DCVI pin numbers 27 and 28 Chapter 8 153 eo jen o 2 Q I 5 2 e D m 3 gt D ms D e 0 Using Handler Interface Timing Chart Timing Chart Figure 8 3 shows the timing chart The section where Data is unpredictable in the figure indicates that the E4981A is processing data after analog measurement and the output signals are invalid For details on measurement time refer to Table on page 155 Figure 8 3 Timing chart for handler interface EXT TRIG INDEX READY FOR _TRIG Unpredictable Previous sorting result Sorting result Data BIN1 BIN9 OUT_OF_BINS OVLD LOWC_OR_NC e4981aue0039 154 Chapter 8 Using Handler Interface Timing Chart Table 8 3 Values of T1 T
224. unction OFF Turns OFF the auxiliary function 142 Chapter 7 A NOTE NOTE Step 1 Step 2 Step 3 Sorting Based on Measured Results Comparator Function Rejecting Excessively Low Measured Results Low C reject function Rejecting Excessively Low Measured Results Low C reject function The E4981A has a function to detect extremely low measured primary parameter values Cp or Cs that are equal to or less than the preset boundary value as Low C abnormal measurement status This is called the Low C reject function When the comparator function is ON normal sorting judgment will be performed even if Low C is detected However the sorting judgment result displayed on the screen is LOWC and on the handler interface the LOWC OR NC signal becomes active low level in addition to the sorting judgment signal Handler output shares the line for No Contact amp Low C Reject and becomes active when primary parameter is lower than the border value eO ie 3 O o o gt e M Cc 2 Q g 2 Turning ON OFF Low C reject function Setup procedure Press Meas Setup Use the cursor key to select LOW C REJ field Use the following softkeys Softkey Function ON Turns ON the Low C Reject function OFF Turns OFF the Low C Reject function Setting up limit boundary value of Low C reject function Set up the limit of the Low C reject function boundary value of the range to detect Low C as a
225. up Step 2 Press LIMIT TABLE softkey Step 3 Use the cursor keys to select the BEEP field B QOO D Sa a5 zo e es no v 20 an ce D m 89 Bg lt 5 Chapter 4 79 NOTE Step 1 Step 2 Step 3 Step 4 Setting up Measurement Conditions and Display Turning On Off the Beep Feature Turning On Off the Beep Feature Functional Description The E4981A has a beep feature that generates beeps when one or more of the following conditions occur e An error message or warning message has appeared e The instrument has completed open short correction e The instrument has completed open short load correction at user specified frequency points The DUT has failed the limit test or has been sorted as OUT OF BIN AUX BIN OVLD or No contact by the comparator a e The DUT has passed the limit test or has been sorted into one of bins through 9 by the comparator 1 e You have turned on off the key lock Regardless of whether the beep feature is on or off beeps are generated whenever e E4981A starts up e You change the beep tone through the front panel The beep feature does not support volume control To set up the beep feature Press System Press SYSTEM CONFIG softkey Use the cursor keys to select the BEEPER ENABLED field Turn on or off the beep feature by pressing the appropriate softkey Softkey Description ON Turns ON the beep feature OFF Turns OFF the be
226. upplied to the cathode of the photo coupler LED The anode of the LED is connected to the drive source voltage Table 8 6 shows the electrical characteristics of the input signals Figure 8 6 shows the circuit diagram of the input signals The amount of current flowing through the LED depends on the setups of the drive source voltage and the input signal resistor Table 8 6 Electrical characteristics of the handler interface input signals Input current LOW mA typical Input voltage V Input signal Drive source voltage DCV2 LOW HIGH 5V 12 V 15 V 24V EXT TRIG 2 7 3 6 4 4 6 3 0 1 DCV2 KEY LOCK 2 8 7 0 9 0 14 5 Figure 8 6 Circuit diagram of the handler interface input signals Handler interface connector FK EXT DCV2 ooejoju JojpueH BHuisp 8 EXT TRIG IKEY LOCK e4981a0e0001 Chapter 8 159 Using Handler Interface Electrical Characteristics Table 8 7 Selection of handler input trigger voltage SYSTem HANDIer TRIGger VOLTage para 5V para 9V 9V para 15V 15V lt para x 24V S1 ON OFF OFF S2 OFF ON OFF S3 OFF OFF ON When the drive source voltage is between 5V 9V the switch S1 is ON closed and current flows through the input signal resistor of 1kQ When the source voltage is between 9V 15V the switch S2 is ON closed and current flows through the input signal resi
227. uring data for OPEN correction The OPEN correction is provided to remove stray admittance parallel to the DUT The procedure to measure the data for OPEN correction is described below Press the Meas Setup key Press the CORRECTION softkey The CORRECTION display page as shown in Figure 3 8 appears Figure 3 8 Correction screen KCORRECTION gt HEAS OPEN OFF CABLE Om SETUP SHORT OFF MULTI OFF LOAD OFF LOAD REF SINGLE ri OFFSET OFF LOAD RNG AUTO ud E LIMIT TABLE OPEN G B A 85 B 85 SHORT R X 8 B Ba CONT LOAD Cp D A 188 nF B A CHECK REF 100 nF B 8 OFFSET fy CULE B 8 Use softkeus to select e4891auj0003 Step 3 Use the cursor keys to select the OPEN field Step 4 Connect the UNKNOWN terminal and the test fixture with no DUT connected Step 5 Press the MEAS OPEN softkey The data for the OPEN correction is then measured e During the measurement an OPEN measurement in progress message is shown on the display e When the measurement has finished the OPEN measurement in progress message disappears During the measurement the ABORT softkey is shown Use this key when you want to abort open correction NOTE The data for OPEN correction is stored as data for all the measurement frequencies Chapter 3 51 e e D o D m a Figure 3 9 Step 6 NOTE NOTE Getting Started Learning Basic Measurement Procedure When measurement of the data for OPEN correc
228. urn ON OFF the Can turn ON OFF the comparator function comparator function comparator function Limit range reset Clears the ON OFF N A Clears the ON OFF state and range of every limit range state and range of every limit range Primary parameter ON OFF limit range setup Can turn ON OFF BIN1 to BINS of the comparator function Can turn ON OFF BINI to BIN9 of the comparator function Can turn ON OFF BINI to BIN9 of the comparator function Range setup Can set low and high limit ranges of BINI to BINO9 Can set low and high limit ranges of BINI to BINO Can set low and high limit ranges of BIN1 to BIN9 Limit range designation method mode selection Selectable from DEV ABS PCNT Selectable from DEV ABS PCNT Selectable from DEV ABS PCNT Reference nominal value Specifies the reference value when specifying the primary parameter limit range for the comparator function Specifies the reference value when specifying the primary parameter limit range for the comparator function Specifies the reference value when specifying the primary parameter limit range for the comparator function 228 Appendix B Information for Replacing 4268A 4288A with E4981A Functional comparison between 4268A 4288A and E4981A Table B 1 Functional comparison between 4268A 4288A and E4981A
229. using a Capacitance meter and use it as the standard Notes on selecting a device to use as the standard are given below e When you measure DUTS with a fixed impedance value use a device with an impedance close to the fixed value On the other hand when you measure DUTS of several different values use a device whose impedance can be valued accurately within a range of approximately 100 to 1 kO e Usea stable device that is not sensitive to factors of the measuring environment such as temperature and magnetic field You must value the standard as accurately as possible The valuing procedure is described below Connect the direct coupled test fixture to a Capacitance meter and execute OPEN SHORT correction Set the measurement frequency of the Capacitance meter to the frequency 120 Hz 1 kHz 1 MHz actually used when measuring the data for the LOAD correction Set up the Capacitance meter under measurement conditions that allow high accuracy valuing measurement for example setting up the measurement time to 8 or increasing the averaging count Connect a device you use as the standard to the direct coupled test fixture and perform the measurement Use the obtained measured value as the standard for the LOAD correction Defining standard for LOAD correction setting up LOAD reference value Before measuring the data for the LOAD correction you must define the value of the standard used in LOAD correction You can define the standard
230. wing items Initial settings factory settings Settings reset from the front panel or the GPIB by the SYStem PRESet command Settings reset from the GPIB by the RST command Settings that can be saved recalled Table C 1 uses the following symbols 1 Settings that can be saved recalled x Settings that cannot be saved recalled Settings that can be backed up Table C 1 uses the following symbols 1 Settings that can be backed up in the Flash memory x Settings that cannot be backed up The symbol in Table C 1 indicates that the value is the same as that indicated to the left 234 Appendix C Initial Settings Initial Settings Settings that can be Saved Recalled Settings that can be Backed Up Table C 1 Initial settings settings that can be saved recalled settings that can be backed up Reset Setting items chun ey Front panel key RST ae Backup SYST PRES Primary parameter CP 1 oo Measurement parameter Secondary parameter D 1 eo Frequency 1 kHz 1 oo 1 MHz frequency shift 0 No effect oo I Measurement signal T i z B M t ignal level compensation GL c P OFF l oo Output mode CONT 1 oo Measurement range AMO n 2 l n Range setup 100 nF 1 oo Measurement time mode N 6 1 oo ON OFF ON 1 oo Averaging Number

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