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Agilent N1913/1914A EPM Series Power Meters

1. Typical lower range calibration factor Cal Factor 5 10 Frequency GHz Figure 3 8 Calibration factors versus frequency 112 N1913 1914A EPM Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 Measuring TDMA Signals Power Meter and Sensor Operation The voltages generated by the diode detectors in the power sensor can be very small Gain and signal conditioning are required to allow accurate measurement This is achieved using a 400 Hz square wave output from the power meter to drive a chopper amplifier in the power sensor Digital Signal Processing DSP of the generated square wave is used by the power meter to recover the power sensor output and accurately calculate the power level The chopper amplifier technique provides noise immunity and allows large physical distances between power sensor and power meter Additional averaging helps reduce noise susceptibility Achieving Stable Results with TDMA Signals The averaging settings in the power meter are designed to reduce noise when measuring continuous wave CW signals Initial measurement of a pulsed signal may appear unstable with jitter on the less significant displayed digits With pulsed signals the averaging period must be increased to allow measurement over many cycles of the pulsed signal Procedure Set the averaging as follows o 1 Press Channel On dual channel meters select the required channel tt 2 Use the L and U ke
2. he Ag il ent MADE IN MALAYSIA Recommended Calibration Interval Agilent Technologies recommends a two years calibration cycle for the N1913 1914A EPM Series power meter 210 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 Erasing Memory Data If you need to erase the EPM Series Power Meter s memory for example before you return it to Agilent Technologies for repair or calibration of all data stored in it The memory data erased includes the save recall states and power on last states The following procedure explains how to do this ZN 1 Press the key Press 1lof2 Press Service Press Secure Erase If you are sure press the Confirm key a8 Pe Ow NS A pop up appears as shown in Figure 9 4 informing you of the status of the procedure Secure erase in progress AN Programming flash with all zeros 15 percent complete Figure 9 4 Secure erase status pop up Agilent N1913A 1914A EPM Series Power Meters User s Guide 211 9 Maintenance Returning Your Power Meter for Service Use the information in this section if you need to return your power meter to Agilent Technologies Packaging the Power Meter for Shipment Use the following steps to package the power meter for shipment to Agilent Technologies for service e Fill in a blue service tag available at the end of this guide and attach it to the power meter Please be as specific as possible about the nature
3. we Be 98 Gra agient Technologies x welcome to Tabbed Browsing l M D the eae Tos Email Support Agilent Support Products Agilent Another web enabled instrument from Agilent Technologies E Local intranet 2 Right click on the image and select Save Picture As 3 Select a storage location for the image file and click Save The image is captured as a Bitmap BMP file to the default file name display bmp Agilent N1913 1914A EPM Series Power Meters User s Guide 25 1 26 Introduction Getting the Instrument Data The instrument Web interface allows you to transport measurement readings from the instrument to PC applications such as word and spreadsheet applications To get the instrument data 1 On the left of the Welcome Page select Get Data The Get Data Web page will be displayed LXI Agilent Technologies N1914A EPM Series Power Meter Windows Internet Explorer GO Eimotionssse 0015 mys agent com i x resen Pl file Edit View Favorites Tools Help ke B8 gt x agient Technologies X Welcome to Tabbed Browsing Ng a dh peace E Toos Email Support Agilent Support Products Agilent i r A Another web enabled instrument Agilent Technologies MS HAVES TTE VG from Agilent Technologies Upper Window Upper Measurement O Upper Window Lower Measurement Lower Window Upper Measurement Lower Window
4. 241 Hardware missing The power meter is unable to execute the command because either no power sensor is connected or it expects an E series power sensor and one is not connected 310 System error Dty Cyc may impair accuracy with ECP sensor This indicates that the sensor connected is for use with CW signals only 310 System error Ch A Dty Cyc may impair accuracy with ECP sensor This indicates that the sensor connected to Channel A is for use with CW signals only 310 System error Ch B Dty Cyc may impair accuracy with ECP sensor This indicates that the sensor connected to Channel B is for use with CW signals only 310 System error Sensor EEPROM Read Failed critical data not found or unreadable This indicates a failure with your E Series Power Sensor Refer to your power sensor manual for details on returning it for repair 310 System error Sensor EEPROM Read Completed OK but optional data block s not found or unreadable This indicates a failure with your E Series Power Sensor Refer to your power sensor manual for details on returning it for repair 310 System error Sensor EEPROM Read Failed unknown EEPROM table format This indicates a failure with your E Series Power Sensor Refer to your power sensor manual for details on returning it for repair 310 System error Sensor EEPROM lt gt data not found or unreadable Where lt gt refers to the sensor d
5. Channel amp Frequency 50 000MHz Meas Avg AUTO 256 Step Detect V i Ja E ort Offsets gt Figure 3 2 E9300 E Series sensor default channel setup 106 N1913 1914A EPM Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 Measurement Accuracy Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture to determine correction factors With E Series power sensors correction factors are held in Electrically Erasable Programmable Read Only Memory EEPROM and are downloaded to the power meter automatically Using calibration factors enables improved measurement accuracy This section describes making average power measurements using the E9300 E Series power sensors Making a measurement requires the following steps 1 Zero and calibrate the power meter sensor combination 2 Set the frequency for the signal you want to measure 3 Make the measurement Figure 3 3 Power sensor connection requirements Sensor Connection Requirements E9300A These power sensors connect directly to the POWER REF E9300H E9301A E9301H E9304A E9300B These power sensors are configured with an attenuator Prior to E9301B calibration this attenuator must be removed Replace the attenuator before making measurements N1913 1914A EPM Series Power Meters User s Guide User s Guide 107 3 108 Using E9300 E Series Power Sensors Pro
6. Figure 2 51 Password reconfirmation pop up 9 After screen is blanked pressing of any keys on the front panel will prompt you to enter password to restore the display see Figure 2 52 You are allowed up to three attempts of password entry Upon an unsuccessful third attempt you will need to wait for two hours with the power meter powered on before you can reenter the password You are then allowed up to three attempts of password entry again The whole cycle of password entry will then be repeated N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Cancel tae 1of1 Figure 2 52 Enter password to restore display NOTE If you have forgotten the 6 digit password and need to operate the meter immediately perform the Memory Erase operation This operation will erase all data stored in the meter Refer to Memory Erase Secure Erase on page 91 for more details N1913 1914A EPM Series Power Meters User s Guide 89 2 General Power Meter Functions Backlight Intensity Control 90 The backlight intensity control allows you to increase or decrease the backlight brightness This feature helps to prolong the usage hours when the meter is running under battery power a NC To access this feature press X lt 1of2 and select Service In the Service menu press 1of2 and select Backlight RMT A CF 100 00 OVE aes A Ho Sensor ChB Battery A Ho Sensor ChC Backlight A No Se
7. ta 3 2 Use the L and U keys to highlight one of the 20 table titles and press Table to highlight On Sensor Tbis Tbl Hame State Pts 0 off 2 Edit 1 8481A off 19 Table 2 8482A off 12 3 8483A off 10 4 Table 4 8481D off 21 Ei on 5 8485A off 22 6 R8486A off 17 B Table 7 Q8486A off 19 Ei On 8 R8486D off 9 8487A off 7 54 Done 1of1 Figure 5 6 Sensor table selected When no data is contained in the highlighted table the Table key is disabled grayed out 3 Press Done to complete the selection of the calibration factor table Figure 5 7 shows which offset table is selected par Tables A 50 0MHz A o Sensor Cal Tables Sensor Table 5 Selected 3 5 5 845 m reg oeei Figure 5 7 Frequency dependent offset indicator 4 To change the frequency press and use the and o keys to highlight the Frequency field N1913 1914A EPM Series Power Meters User s Guide 137 5 Using 8480 Series Power Sensors 5 Press to display the Frequency pop up window Use the numeric keypad to enter the required value in the Frequency pop up window 6 To confirm your choice press the appropriate unit softkey Connect the power sensor to the signal to be measured 8 The corrected measurement result is now displayed If the measurement frequency does not correspond directly to a frequency in the sensor calibration table the power meter calculates the calibration factor using linear interpolat
8. C 1 05 typical Connector Type Type N f 50 Q 234 Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Environmental Conditions General Complies with the requirements of the EMC Directive 89 336 EEC Operating Environment Temperature 0 C to 55 C Maximum Humidity 95 at 40 C non condensing Minimum Humidity 15 at 40 C non condensing Maximum Altitude 4 600 meters 15 000 feet Storage Conditions Non Operating Storage Temperature 40 C to 70 C Non Operating Maximum Humidity 90 at 65 C non condensing Non Operating Maximum Altitude 15 240 meters 50 000 feet Battery Storage Conditions Storage temperature limits 20 C to 60 C lt 80 RH Refer to Battery Information Optional on page 96 for more details on the battery pack Agilent N1913 1914A EPM Series Power Meters User s Guide 235 10 Specifications and Characteristics Physical Characteristics Dimensions The following dimensions exclude front and rear panel protrusions e 212 6 mm W x 88 5 mm H x 348 3 mm D 8 5 in x 3 5 in x 13 7 in Weight N1913A 1914A Weight Net 3 60 kg approximately N1913A 1914A Weight Shipping 68 20 kg approximately 236 Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Regulatory Information Electromagneti
9. Press Source and Ext will be automatically enabled 9 Press 1of2 Output and On to allow a TTL level high to be produced at the rear panel TRIG OUT BNC port when the meter is triggered upon a completed measurement N1913 1914A EPM Series Power Meters User s Guide 59 2 60 General Power Meter Functions EN Sy Channel Meas y 9 i 10 Press or to setup measurement settings such as measurement averaging measurement frequency offsets duty cycle and so forth Refer to General Power Meter Functions on page 31 for the setup procedures 11 Set the frequency range and step by sending the below commands to meter using remote interface e SENSe1l FREQuency STARt lt start_frequency gt lt frequency_unit gt e SENSe1 FREQuency STOP lt stop_frequency gt lt frequency_unit gt e SENSe1l FREQuency STEP lt frequency_step_size gt Refer to the EPM Series Power Meters Programming Guide for the commands usage details Example of commands set FREQ STAR 10MHz FREQ STOP 500MHz FREQ STEP 10 The power meter can be remotely controlled by LAN USB and GPIB IEEE488 programming interfaces Refer to N1913 1914A EPM Series Power Meters Installation Guide for details 12 Send OPC OPeration Complete command to meter to set the operation complete bit in the Standard Event Status register when all pending device operations are completed 13 Set the meter to continuous trigger c
10. Queue overflow The error queue is full and another error has occurred which could not be recorded 361 Parity error in program The serial port receiver has detected a parity error and consequently data integrity cannot be guaranteed Agilent N1913A 1914A EPM Series Power Meters User s Guide 205 9 Maintenance 362 Framing error in program The serial port receiver has detected a framing error and consequently data integrity cannot be guaranteed 363 Input buffer overrun The serial port receiver has been overrun and consequently data has been lost 410 Query INTERRUPTED A command was received which sends data to the output buffer but the output buffer contained data from a previous command the previous data is not overwritten The output buffer is cleared when power has been off or after RST reset command has been executed 420 Query UNTERMINATED The power meter was addressed to talk that is to send data over the interface but a command has not been received which sends data to the output buffer For example you may have executed a CONFigure command which does not generate data and then attempted to read data from the remote interface 430 Query DEADLOCKED A command was received which generates too much data to fit in the output buffer and the input buffer is also full Command execution continues but data is lost 440 Query UNTERMINATED after indefinite resp
11. The power sensor reference calibration factor can normally be found above the calibration factors table on the power sensor body 4 To change the settings press the channel REF CF The reference calibration factor pop up window is displayed as shown in Figure 6 5 Use the numeric keypad to enter the required value in the Ref Cal Factor pop up menu Figure 6 5 Reference calibration factor pop up window 5 Press to complete the entry Now zero and calibrate the power meter sensor combination as follows 6 Press and the channel Zero softkey The Zeroing pop up is displayed 7 Connect the power sensor to the POWER REF output 8 Press Le and the channel Cal softkey to start the calibration routine The Calibrating pop up is then displayed N1913 1914A EPM Series Power Meters User s Guide 155 156 Using N8480 Series Power Sensors You can reduce the steps required to carry out the zero and calibration procedure as follows 1 Connect the power sensor to the POWER REF output J Cal 2 Press a and Zero Cal For dual channel meters press Zero Cal Zero CalA or Zero CalB as required Now set the sensor calibration factor for the frequency of the signal to measure g ff 9 gt he current reference calibration factor setting by pressing Channel Offset The value is displayed on the Cal Fac field Does this setting match the value for the sensor The power sensor reference calibration factor
12. 232 Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Rear Panel Inputs and Output Connections Recorder Output s Analog 0 to 1 V 1 kQ output impedance BNC connectors GPIB Interfaces allow communication with an external controller USB 2 0 10 100BaseT LAN Trigger Input Optional Input has TTL compatible logic levels and uses a BNC connector Trigger Out Optional Output provides TTL compatible logic levels and uses a BNC connector Ground Binding post accepts 4 mm plug or bare wire connection USB Host Optional To connect U2000 Series USB power sensors VGA Out Optional Standard 15 pin VGA connector allows connection of external VGA monitor Line Power Input Voltage Range 100 to 240 Vac 100 to 120 Vac Automatic voltage selection Fluctuations not exceeding 10 Input Frequency Range 50 to 60 Hz 100 to 240 Vac 400 Hz 100 to 120 Vac Power Requirement 70 VA maximum Agilent N1913 1914A EPM Series Power Meters User s Guide 233 10 Specifications and Characteristics 1 mW Power Reference The 1 mW Power Reference is provided for calibration of the E Series 8480 Series and N8480 Series power sensors Power Output 1 00 mW 0 0 dBm Factory set to 0 4 traceable to the National Physical Laboratories NPL UK Accuracy 1 2 0 55 C 0 4 25 10 C Frequency 50 MHz nominal SWR 1 08 0 55
13. In any power measurement the power meter must initially be set to zero with no power applied to the power sensor Zero setting is accomplished within the power meter by digitally correcting for residual offsets Zero Drift This parameter is also called long term stability and is the change in the power meter indication over a long time usually one hour for a constant input power at a constant temperature after a defined warm up interval Measurement Noise This parameter is also known as short term stability and is specified as the change in the power meter indication over a short time interval usually one minute for a constant input power at a constant temperature Accuracy Instrumentation Absolute accuracy 0 02 dB Logarithmic or 0 5 Linear Refer to the power sensor linearity specification in your power sensor manual to assess overall system accuracy Relative accuracy 0 04 dB Logarithmic or 1 0 Linear Refer to the power sensor linearity specification in your power sensor manual to assess overall system accuracy 1 Refer to the power sensor linearity specification in your power sensor manual to assess overall system accuracy Agilent N1913 1914A EPM Series Power Meters User s Guide 219 10 Specifications and Characteristics 220 Zero Set digital settability of zero Power sensor dependent refer to Table 10 1 and Table 10 2 For Agilent E Series power sensors this specification applies wh
14. Press this key to return to the previous screen This key also cancels pop up entry These unmarked keys are called softkeys and are referred to by the text on the display next to them For example during a Preset you are given an option to confirm the i command Press Confirm to continue that is press the softkey beside j the displayed word confirm The lowest of the unmarked softkeys is used when there is a two page menu to be displayed For example a 1 of 2 is displayed beside the key indicating the first page of a two page menu Press the key to access the next page or second page A 2 of 2 is displayed Agilent N1913 1914A EPM Series Power Meters User s Guide 7 1 Introduction These keys and connectors are associated with the measurement channels i il N1914A Se M Pewi and are located on the right hand side of the front panel Function The arrow keys are used for navigation around the parameter entry screens The up and down arrows are used for selecting values from a pop up list They are also used to enter text for example table names Press this key to select a highlighted field to allow data entry check a checkbox and terminate entry of a popup list Press this key to access the zero and calibration menus Cal Press this key to reset the MAX HOLD and MIN HOLD measurement Press these keys to enter numeric values in the pop u
15. THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK Agilent N1913 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters User s Guide 2 General Power Meter Functions Setting the Units of Measurement 32 Setting the Measurement Frequency 33 Setting the Resolution 34 Making Relative Measurements 35 Setting Offsets 37 Setting Measurement Averaging 49 Step Detection 51 Measuring Pulsed Signals 52 Setting External Trigger for Average Power Measurement 54 Setting Measurement Limits 62 Single Function Measurement 67 Combined Measurement 68 Max Hold Min Hold 69 Recorder Output 72 Saving and Recalling Power Meter States 75 Zeroing and Calibrating the Power Meter 77 Blank Screen 84 Secure Blank 85 Backlight Intensity Control 90 Memory Erase Secure Erase 91 VGA Output Optional 94 Warm Start 95 Battery Information Optional 96 Setting the Cable Short Long 102 This chapter describes the general operation of the N1913 1914A EPM Series power meters ot Agilent Technologies 31 2 General Power Meter Functions Setting the Units of Measurement 32 The Units menu is used to select the measurement units for the currently selected window These can either be logarithmic dBm or dB or linear Watt or units Presetting Pret the power meter sets the measurement units to dBm logarithmic units Table 2 1 and Table 2 2 show units that are applicable to each measurement mode OON Press
16. consists of the following e Instrument Self Test e Keyboard e Bitmaps Displays e RTC Battery Time Base Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 Instrument Self Test If Self Test is selected the following tests are run These are the same tests which are run using the TST command Test Point Voltages Calibrator Fan RTC Battery Channel CW Path As each test takes place the name of the test is listed on the screen While a test is running the message Testing appears beside the name of the test As each stage of the test is completed the Testing message is replaced by either Passed or Failed Self Test TEST RESULT Test Point Voltages Passed Calibrator Passed Fan Passed RTC Battery Passed ChA CW Path Passed ChB CW Path Passed Done Figure 9 1 Self test complete When the test is complete the result will be displayed Press Done to return to the Service menu If the self test failed information about the failure is displayed on the screen Agilent N1913A 1914A EPM Series Power Meters User s Guide 193 9 194 Remote Testing To invoke the remote self test the IEEE 488 1 compliant standard command TST is used This command runs a full self test and returns one of the following codes e 0 no tests failed e 1 one or more tests failed The remote self test consists of the following tests The communications assembly is tested implicitly in that th
17. e Power sweep mode e Frequency sweep mode These modes are used to eliminate the need for lengthy test routines while increasing measurement throughput by reducing overhead of communication with the controller The sweep feature allows you to make power measurement by quickly stepping through a series of frequencies or power levels Configuration shown in Figure 2 19 illustrates the triggering connection required to synchronize power meter measurement to the power source settings Trigger delay and trigger holdoff are both not applicable when the power meter is set to power sweep mode or frequency sweep mode N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Power Sweep Mode Power sweep is generally used in power level calibration setup where the frequency is fixed CW frequency and the amplitude of the power source signal is swept This mode can be used to characterize the flatness linearity or gain compression of a device under test This feature is only available when 8480 Series N8480 Series E Series E4410 or E Series E9300 sensor is connected Procedures 1 Connect sensor to a power source 2 Connect power meter TRIG OUT to power source TRIG IN using a BNC cable The same connection is applied for power source TRIG OUT to power meter TRIG IN optional connection Power Source Power Meter Average Power Sensor Figure 2 19 TRIG IN and TRIG OUT connection diagram between
18. in the power meter They are used to correct measurement results Use sensor calibration tables when you want to make power measurements over a range of frequencies using one or more power sensors The N1913 1914A EPM Series power meters are capable of storing 20 sensor calibration tables each containing up to 80 frequency points The power meter is supplied with a set of 9 predefined sensor calibration tables plus a 100 default table The data in these tables is based on statistical averages for a range of Agilent Technologies power sensors Your own sensor will most likely differ from the typical to some degree If you require best accuracy create a custom table for each sensor you use as shown in Editing Generating Sensor Calibration Tables on page 139 To use calibration factor tables 1 Select the sensor calibration table to be applied to a channel 2 Zero and calibrate the power meter The reference calibration factor used during the calibration is automatically set by the power meter from the sensor calibration table 3 Specify the frequency of the signal you want to measure The calibration factor is automatically set by the power meter from the sensor calibration table 4 Make the measurement 136 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Procedure First select the table for the sensor you are using as follows Ks Syst 1 Press system Tables Sensor Cal Tables
19. thermocouple sensors for specifications and calibration information N1913A 1914A EPM Series Power Meters User s Guide Using U8480 Series USB Power Sensors Power Meter Configuration The N1913 1914A EPM Series power meters automatically recognize an U8480 Series USB thermocouple sensor when it is connected The sensor calibration data is automatically read by the power meter The power meter also configures the auto averaging settings shown in Figure 8 1 to suit the thermocouple sensor characteristics These values are valid only for the power meter channel connected with U8480 Series USB thermocouple sensors Resolution setting Maximum power 1 20 dBm a g i t 1 1 2 8 Ri 2iosu Porte eu Sheers E z t 1 1 2 8 gt Ubi Pecks veto eina D Ga hes z t 2 2 4 32 Z HVA Bm aei T oe ence kw EAEE AE ee maces g f 2 2 16 256 a UMA osn cee weeeeh denice EE dees f 2 8 128 256 Minimum power Figure 8 1 U8480 Series auto averaging settings N1913A 1914A EPM Series Power Meters User s Guide User s Guide Number of averages 181 8 182 Using U8480 Series USB Power Sensors Default Channel Setup When an U8480 Series USB thermocouple sensor is connected the following Channel Setup is automatically configured Carrying out a Preset returns the power meter to this configuration The U8480 Series thermocouple sensor does not support auto ranging RMT Channel Channel C Setup Setup Sensor Range auto a cmp gt
20. 1 2 4 8 16 32 64 128 256 512 1024 Normal Mode Noise Multiplier 65 46 325 23 1 63 1 0 0 72 0 57 0 41 0 29 0 2 X2 Mode Agilent N1913 1914A EPM Series Power Meters User s Guide 223 10 Specifications and Characteristics 224 Table 10 4 Power sensor specifications Power Sensor Zero Drift Measurement Noise 8a OONN nw o nw 8481B7 lt 10 mW lt 110 mW Fegi S T pw lt w 8481H lt 1 mW lt 10 mW 8482A lt 10 nW lt 110 nW 8482B7 lt 10 mW lt 110 mW 8482H4 lt 1 mW lt 10 mW 8483A lt 10 nW lt 110 nW 8485A lt 10 nW lt 110 nW 8485D4 lt 4 pW lt 45 pW R8486A lt 10 nW lt 110 nW R8486D lt 6 pW lt 65 pW 08486A4 lt 10 nW lt 110 nW as4s6D lt 6 pW lt 65 pW V8486A lt 40 nW lt 450 nW W38486A7 lt 40 nW lt 450 nW 8487A lt 10 nW lt 110 nW 8487D4 lt 4 pW lt 45 pW E4412A lt 15 pW lt 70 pW E4413A lt 15 pW lt 70 pW E9300A lt 150 pW lt 700 pW E9301A lt 150 pW lt 700 pW E9304A3 lt 150 pW lt 700 pW E9300B lt 150 nW lt 700 nW 9301Bei lt lt i w lt i i OO C Y SSC C 50w lt 0 OC E9300H3 lt 1 5 nW lt 7nW PEBH S O CW 7w CO N8481A exclude Option CFT lt 3 nW lt 80 nW N8482A exclude Option CFT lt t3nW lt 80nw N8485A exclude Option CFT lt 3 nW lt 80 nW Agilent N1913 1
21. 1 Connect the power sensor to the POWER REF output 2 Press Cal and Zero Cal For dual channel meters press 4 Zero Cal Zero CalA or Zero CalB as required Now set the sensor calibration factor for the frequency of the signal you want to measure 9 Channel current reference calibration factor setting by pressing Channel Ns J Offset The value is displayed on the Cal Fac field See Does this setting match the value for the sensor The power sensor reference calibration factor can normally be found above the calibration factors table on the power sensor body N1913 1914A EPM Series Power Meters User s Guide 133 5 134 Using 8480 Series Power Sensors 10 To change the settings use the L and VY keys to highlight the Cal Fac value field and press to display the Cal Factor pop up Use the numeric keypad to enter the required value in the Cal Factor pop up window Figure 5 4 Calibration factor pop up window 11 Press to complete the entry 12 Connect the power sensor to the signal to be measured 13 The corrected measurement result is displayed RMT A CF 99 7 Channel A l Ofs 0dB Calibration Factor 3 D 7 6 Acq Free run z d B M Channeig A Ho Sensor 35 76dBm Y Figure 5 5 Calibration factor display N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Example To make a measurement on channel A with a power sensor which has a referen
22. 100 0 1 MHz 94 110 GHz 100 0 3 MHz 97 9 Agilent 8481A 1 MHz 98 4 RCF 100 3 MHz 98 4 50 MHz 100 10 MHz 99 3 100 MHz 99 8 30 MHz 98 7 2 GHz 99 100 MHz 97 8 3 GHz 98 6 300 MHz 97 5 4 GHz 98 1 GHz 97 2 5 GHz 97 7 2 GHz 96 4 6 GHz 97 4 3 GHz 93 7 GHz 97 1 4 GHz 91 8 GHz 96 6 Agilent 8481D 9 GHz 96 2 RCF 99 10 GHz 95 4 50 MHz 99 11 GHz 94 9 500 MHz 99 5 12 4 GHz 94 3 1 GHz 99 4 13 GHz 94 3 2 GHz 99 5 14 GHz 93 2 3 GHz 98 6 15 GHz 93 4 GHz 98 6 16 GHz 93 5 GHz 98 5 17 GHz 92 7 6 GHz 98 5 18 GHz 91 8 7 GHz 98 6 Agilent 8482A 8 GHz 98 7 RCF 98 9 GHz 99 5 0 1 MHz 98 10 GHz 98 6 0 3 MHz 99 5 11 GHz 98 7 1 MHz 99 3 12 GHz 99 3 MHz 98 5 12 4 GHz 99 1 10 MHz 98 5 13 GHz 98 9 30 MHz 98 1 14 GHz 99 4 100 MHz 97 6 15 GHz 98 9 300 MHz 97 5 16 GHz 99 1 1 GHz 97 17 GHz 98 4 2 GHz 95 18 GHz 100 1 3 GHz 93 N1913 1914A EPM Series Power Meters User s Guide 143 5 Using 8480 Series Power Sensors 4 2 GHz 91 Agilent R8486A Agilent N8485A continued RCF 100 17 GHz 96 7 50 MHz 100 18 GHz 96 6 26 5 GHz 94 9 19 GHz 96 27 GHz 94 9 20 GHz 96 1 28 GHz 95 4 21 GHz 96 2 29 GHz 94 3 22 GHz 95 3 30 GHz 94 1 23 GHz 94 9 31 GHz 93 5 24 GHz 94 3 32 GHz 93 7 25 GHz 92 4 33 GHz 93 7 26 GHz 92 2 34 GHz 94 9 26 5 GHz 92 1 34 5 GHz 94 5 Ag
23. All HBA 1of1 Figure 8 5 Zeroing error pop up message Error messages will be logged in the Error Log in System gt Error List 186 N1913A 1914A EPM Series Power Meters User s Guide Calibrating Using U8480 Series USB Power Sensors 8 The N1913 1914A EPM Series power meters are able to perform calibration for the U8480 USB thermocouple sensor via the front panel and SCPI The N1913 1914A EPM Series power meters also support auto calibration Auto Cal for the U8480 USB thermocouple sensor Both internal Int and external Ext calibration is supported by the N1913 1914A EPM Series power meters LCL D 50 0MHz 52 7 1 dBm Calibrate oo AN No Sensor ChB E 1of1 Figure 8 6 Calibration type The Auto Cal state is determined by the state of the calibration type as shown in Figure 8 6 If the calibration type is set to Int you will be able to toggle between On and Off under the Auto Cal state If the calibration type is set to Ext the Auto Cal state will be set to Off and the softkey will be greyed out When calibration is performed via the front panel or SCPI the following message will appear N1913A 1914A EPM Series Power Meters User s Guide User s Guide 187 8 188 Using U8480 Series USB Power Sensors LCL A CF 100 00 50 0MHz Please Wait DOEOOEEEOEODEooEoooooo 70 000dBm 20 000dBm EE gt E gt E gt E gt E _ Calibrate 1of1 Figure 8 7 Calibration pop u
24. Cal softkey to start the calibration routine The Calibrating pop up is then displayed g o ji 8 Press Cnannei Offset The value is displayed on the Cal Fac field See 9 Tse the ana Y keys to highlight the Cal Fac value field and press om to display the Cal Factor pop up Use the numeric keypad to enter 97 6 in the Cal Factor pop up window 10 Press to complete the entry 11 Connect the power sensor to the signal to be measured 12 The corrected measurement result is displayed When no sensor tables are selected and Single Numeric display mode is chosen the calibration factor used for the measurement is displayed in the upper window as shown in Figure 6 7 N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Sensor Calibration Tables This section describes how to use sensor calibration tables Sensor calibration tables store the measurement calibration factors for a power sensor model or for a specific power sensor in the power meter They are used to correct measurement results Use sensor calibration tables when you want to make power measurements over a range of frequencies using one or more power sensors The N1913 1914A EPM Series power meters are capable of storing 20 sensor calibration tables each containing up to 80 frequency points The power meter is supplied with a set of nine predefined sensor calibration tables plus a 100 default table The data in these t
25. Calibration Tables 136 This chapter describes how to use your 8480 Series power sensors with N1913 1914A EPM Series power meter ee Agilent Technologies 125 5 Using 8480 Series Power Sensors Introduction The 8480 Series offers a wide range of both thermocouple and diode based power sensors Many have very specific applications for example the 110 GHz W8486A or the 44 dBm 8482B However they do not have their calibration factors stored in EEPROM unlike all E Series and require that you use default calibration tables or manually enter the required correction factors Likewise they cannot be used to make peak or time gated measurements Please refer to the documentation supplied with your Agilent 8480 Series power sensors for specification and calibration information 126 N1913 1914A EPM Series Power Meters User s Guide Power Meter Configuration The N1913 1914A EPM Series power meters automatically recognize an 8480 Series power sensor when it is connected The averaging settings shown in Figure 5 1 are automatically configured Using 8480 Series Power Sensors Resolution Setting Maximum Sensor Power 1 2 3 4 1 1 1 8 10 dB 1 1 1 16 BS E E EEE E E E A E E L teat E E D oc 2 g 10 dB 1 1 2 32 C G A s S 100B 1 1 16 256 aa 10 dB 1 8 128 128 Minimum Sensor Power Figure 5 1 8480 Series auto averaging settings These values are valid only for the power meter channel connected with Agilent 8480 S
26. Channel C Frequency 50 000MHz Meas Aug AUTO 7 Step Detect v mE or Offsets gt Figure 8 2 U8480 Series USB power sensor default channel setup N1913A 1914A EPM Series Power Meters User s Guide Using U8480 Series USB Power Sensors 8 Measurement Accuracy Thermocouple sensors have small errors in their response over frequency The response of each sensor is measured during manufacture to determine correction factors With the U8480 Series thermocouple sensors correction factors are stored in a 3 MB Flash memory and are downloaded to the power meter automatically Using calibration factors enables improved measurement accuracy This section describes making average power measurements using the U8480 Series thermocouple sensors Making a measurement requires the following steps 1 Zero the power meter power sensor combination 2 Set the frequency for the signal you want to measure 3 Make the measurement Procedure Zero the power meter thermocouple sensor combination 2 Ensure the power sensor is disconnected from any signal source 3 Press ca and the channel Z softkey Select the required channel Now set the frequency of the signal you want to measure The thermocouple meter automatically selects the appropriate calibration factor la Channel Channel A 4 Press On dual channel meters select the required channel 5 Use the L and U keys to highlight the Frequency value field and p
27. Lower Measurement 1 max 1000 GetData S Local intranet 2 Select the window measurement type of the instrument 3 Enter your desired count value up to 1000 only of the data and click Get Data The data will be displayed in a text box 4 Copy and paste the data in your intended PC application Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Making Socket Connection The power meter can be remotely connected via socket connection To connect the meter using socket connection 1 Right click the Agilent IO Libraries ic icon on the taskbar and select Agilent Connection Expert 2 On the Agilent Connection Expert window click on a Add Instrument An Add Instrument window will be prompted out Select Add LAN instrument on LAN TCPIPO interface and click OK see Figure 1 11 E add Interface Name Status iE Description Add LAN instrument on LAN TCPIPO Available LAN interface COMI ASRLI Available RS 232 serial interface COM4 ASRL4 Available RS 232 serial interface COM ASRL 7 Unavailable This interface is in an error st COMB ASRL8 Unavailable This interface is in an error st USBO Unavailable USB interface s Interface status information Instruments may be added to this interface OK Cancel Help Figure 1 11 Add Instrument window 3 On the Add LAN Instruments window see Figure 1 12 click the Add Ad
28. N8482B with Option CFT 63 uW N8481H with Option CFT 6 3 pW N8482H with Option CFT 6 3 pW 1 The zero set specifications are tested with Agilent 11730A power sensor cable 1 5 m 7 5 ft 2 The zero set specifications are tested at 50 MHz Agilent N1913 1914A EPM Series Power Meters User s Guide 10 221 10 Specifications and Characteristics 222 Table 10 2 Zero Set Internal and External for U2000 Series Power sensor Range Zero Set Internal Zero Set External U2000 1 2A 60 dBm to 35 dBm 1 5 nW 600 pW 38 dBm to 15 dBm 2 nW 1 5 nW 20 dBm to 9 dBm 12 nW 10 nW 11 dBm to 5 dBm 2 yW 500 nW 7 dBm to 15 dBm 4 uW 1 yW 10 dBm to 20 dBm 6 pW 5 pW U2004A 60 dBm to 35 dBm 2 8 nW 600 pw 38 dBm to 15 dBm 3 nW 1 5 nW 20 dBm to 9 dBm 12 nW 10 nW 11 dBm to 5 dBm 2 yW 500 nW 7 dBm to 15 dBm 4 uW 1 yW 10 dBm to 20 dBm 6 pW 5 pW U2000 1 2H 50 dBm to 25 dBm 15 nW 8 nW 28 dBm to 5 dBm 20 nW 20 nW 10 dBm to 1 dBm 120 nW 100 nW 1 dBm to 5 dBm 20 pW 20 pW 3 dBm to 25 dBm 40 pW 30 pW 20 dBm to 30 dBm 60 pW 60 pW U2000 1B 30 dBm to 5 dBm 1 8 pW 800 nW 8 dBm to 15 dBm 2 uW 2 pW 10 dBm to 21 dBm 12 pW 10 pW 19 dBm to 25 dBm 2 mW 1 mW 23 dBm to 44 dBm 4 mW 2 mW The Zero Set specifications are only applicable to U2000 Series
29. Power Meter Functions Setting the Resolution 34 The resolution of each of the power meter s numeric type windows can be set to four different levels 1 2 3 or 4 These four levels represent e 1 0 1 0 01 0 001 dB respectively if the measurement suffix is dBm or dB e 1 2 3 or 4 significant digits respectively if the measurement suffix is W or The default value is 0 01 dB 3 digits To set the resolution on the currently selected window EON 1 Press Display The current setting of the resolution is highlighted under the Resolution softkey 2 To change this setting press Resolution repeatedly until the required resolution setting is highlighted N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Making Relative Measurements Relative mode enables comparison of a measurement result to a reference value The relative reading or difference can be displayed in either dB or terms When the measurement result is displayed in a prefix multiplier may be shown Procedure OON 1 Press to display the Measurement Setup menu Figure 2 2 shows a Measurement Setup display and the relative measurement items labeled 2 Select the window you wish to set a reference value on by pressing the Meas Select key The currently selected window measurement is displayed 3 Use the and keys to highlight the Relative setting field LCL Measurement Setup Mers SEAR
30. Preset returns the channel to this configuration Channel Channel A Setup Setup Sensor i Channel ma me Range AUTO Channel A Frequency 50 000MHz Meas Avg AUTO m Step Detect v fic vg C 4 Figure 4 2 E Series E4410 sensor default channel setup N1913 1914A EPM Series Power Meters User s Guide Using E4410 E Series Power Sensors 4 Measurement Accuracy Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture and during periodic calibration With E Series power sensors the resulting frequency compensation information is written into Electrically Erasable Programmable Read Only Memory EEPROM This allows the frequency and calibration data to be downloaded to the power meter automatically Using calibration factors enables you to achieve improved measurement accuracy This section describes making continuous wave measurements using the E4410 E Series power sensors Making a measurement requires the following steps 1 Zero and calibrate the power meter sensor combination 2 Set the frequency for the signal you want to measure 3 Make the measurement Procedure 1 Zero and calibrate the power meter sensor combination 2 Ensure the power sensor is disconnected from any signal source 3 Press Le and the channel Zero softkey The Zeroing pop up is displayed 4 Connect the power sensor to the POWER REF output 5 Press e
31. See Gk l i 1 14 1 1024 35dBm 15dBm 5 dBm Giese he eh e exigencies ce 1 1 14 256 1024 23dBm y 3 dBm iV 7 dBm ae cae a 25dBm 5aBm A SaBm E i l i 1 14 128 1024 24dBm 4dBm 6dBm ooYooaaanaaaanaaannnnn 1 1 512 1024 a y 19 dBm y 1 dBm y 11 dBm D A da Ue OE oo dee oe D l l 1 1 4 1 A 21dBm A 1dBm A 9dBm Y a l 1 1 14 1024 5 18dBm 2dBm 142dBm V c 2 eee eee eee 3 l Y 10dBm y 10 dBm 22 dBm EA A loat p 16 1024 5 15aBm sapm 15dBm Y NE E OE N I 7dBm 43dBm 23 dBm a l 3 dBm 23 dBm l 33 dBm _ Y 1 lt S l l 1 4 512 1024 y 8 dBm 28 dBm y dBm aY o ooa aaa aaa aaa l l 1 14 16 1024 A 5aBm 25 dBm 35 dBm Fou ee 1 1 1024 1024 8 dBm 28dBm 38 dBm a Yanuna DER 15dBm 35dBm 45dBm Vi teeta l I I i 25dBm i 45dBm 1 55dBm ___y 120 10241021 1024 l I I y 20aBm y o dent Y ae 512 1024 1024 1024 Minimum Sensor Power Within a Range Figure 7 1 U2000 Series auto averaging settings N1913A 1914A EPM Series Power Meters User s Guide Using U2000 Series USB Power Sensors 7 Default Channel Setup When an U2000 Series USB power sensor is connected the following Channel Setup is automatically configured Carrying out a Preset returns the power meter to this configuration RMT Channe
32. Warranty Service Agilent Technologies certifies that this product met its published specifications at the time of shipment Agilent further certifies that its calibration measurements are traceable to the United States National Institute of Standard and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members The material contained in this document is provided as is and is subject to being changed without notice in future editions Further to the maximum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a particular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or performance of this document or any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the separate agreement shall control Duration and conditions of warranty for this product may be superseded when the product is integrated into becomes a part of other Agilent products During the warranty period
33. a sensor is connected The Zero Cal Lockout configuration is applied to both channels it cannot be applied to one channel only You can enable and disable the Zero Cal Lockout facility from the System menu or the Cal menu as follow fevcta Press System 1of2 Must Cal Off or On ae Similarly press om 1of2 MustCal Off or On 78 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Calibration Calibration sets the gain of the power meter using a 50 MHz 1 mW calibrator as a traceable power reference The power meter s POWER REF output or a suitable external reference is used as the signal source for calibration An essential part of calibrating is setting the correct reference calibration factor for the power sensor you are using The N1913 1914A EPM Series Power Meter User s Guide require you to set the reference calibration factor The E Series power sensors and N8480 Series power sensors excluding Option CFT set the reference calibration factor automatically During calibration the wait symbol is displayed Offset relative and duty cycle settings are ignored during calibration X Please Wait Figure 2 43 Calibration wait pop up During calibration the power meter automatically switches the power reference calibrator on if it is not already on then after calibration it switches it to the state it was in prior to the calibration N1913 1914A EPM Series Power Meters User s Gui
34. accept a suffix For example INIT CONT OHz Agilent N1913A 1914A EPM Series Power Meters User s Guide 199 9 Maintenance 148 Character data not allowed A discrete parameter was received but a character string or a numeric parameter was expected Check the list of parameters to verify that you have used a valid parameter type For example MEM CLE CUSTOM_1 151 Invalid string data An invalid string was received Check to see if you have enclosed the character string in single or double quotes For example MEM CLE CUSTOM_1 158 String data not allowed A character string was received but is not allowed for the command Check the list of parameters to verify that you have used a valid parameter type For example LIM STAT ON 161 Invalid block data A block data element was expected but was invalid for some reason For example DDT 15FET The 5 in the string indicates that 5 characters should follow whereas in this example there are only 3 168 Block data not allowed A legal block data element was encountered but not allowed by the power meter at this point For example SYST LANG 15FETC 178 Expression data not allowed A legal expression data was encountered but not allowed by the power meter at this point For example SYST LANG 5 2 211 200 Trigger ignored Indicates that lt GET gt or TRG or TRIG IMM was received and recognize
35. analog display 11 Figure 1 3 Full screen numeric display 12 Figure 1 4 Accessing the instrument Web interface 17 Figure 1 5 N1914A EPM Series power meter Web interface Welcome Page 18 Figure 1 6 Message to identify the instrument 19 Figure 1 7 Example of Lan Status message 20 Figure 1 8 Viewing LAN configuration settings from the Web interface 22 Figure 1 9 Password security dialog box 23 Figure 1 10 Changing the instrument LAN interface configuration 24 Figure 2 1 Frequency pop up 33 Figure 2 2 Typical relative measurement display 35 Figure 2 3 Numeric display 36 Figure 2 4 Simplified measurement path 37 Figure 2 5 Typical channel offset display 38 Figure 2 6 Channel offset indicator 39 Figure 2 7 Typical display offset display 40 Figure 2 8 Frequency dependent offset tables display 42 Figure 2 9 Frequency dependent offset indicator 43 Figure 2 10 Edit Offset display with data added 45 Figure 2 11 Edit table title pop up 45 Figure 2 12 Changing offset unit 46 Figure 2 14 Typical averaged readings 49 Figure 2 15 Meas Avg Count pop up 50 Figure 2 16 Pulsed signal 52 Figure 2 17 Duty cycle setting 53 Figure 2 18 Duty cycle indicator 53 Figure 2 19 TRIG IN and TRIG OUT connection diagram between power meter and power source 55 Figure 2 20 Channel Setup display 56 Figure 2 21 Trigger setting menu 1 of 2 57 Figure 2 22 Trigger setting menu 2of2 57 Figure 2 23 Limits checking applications 62 Figure 2 24 Limits check
36. be possible and a replacement battery is required A battery that remains discharged after two days on charge can be assumed discharged beyond recovery a replacement is required 100 Failing Battery The battery can be charged and discharged numerous times but due to battery chemistry characteristics the operation time decreases When the battery powered operation time of your power meter becomes noticeably shorter it is time to order a new battery To obtain a replacement battery order Agilent part number N1913 37900 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 WARNING e This battery pack uses Lithium ion Li ion batteries Do not short circuit the battery terminals Do not subject the battery to excessive heat Do not dispose of by burning e Lithium ion Li ion cells are considerably more environmentally friendly than Nickel Cadmium NiCD cells but you should follow battery safety guidelines e Refer to your local country regulatory requirements on the disposal of Lithium ion Li ion batteries Xg Running Time Typical running times and conditions as follows Power Meter Sensor LCD Backlight Sensor LCD Backlight No Sensor LCD No Sensor LCD Model ON OFF Backlight ON Backlight OFF N1913A Up to 6 hours Up to 7 hours 20 minutes Up to 6 hours 15 minutes Up to 7 hours 30 minutes N1914A CAUTION Use the battery only for its intended purpose Only use
37. can be set in both manual and automatic measurement average modes Procedure Set step detection as follows ome 1 Press On dual channel meters select the required channel 2 Use the O and U keys to select the Step Detect setting field 3 Press to check the step detection to on or off Prev 4 Press f key to close the Channel Setup screen N1913 1914A EPM Series Power Meters User s Guide 51 2 General Power Meter Functions Measuring Pulsed Signals 52 The power meter can be used to measure the power of a pulsed signal The measurement result is a mathematical representation of the pulse power rather than an actual measurement assumes constant peak power The power meter measures the average power of the pulsed input signal and then divides the measurement result by the duty cycle value to obtain the pulse power reading The allowable range of values is 0 001 to 100 The default value is 1 000 If duty cycle is enabled then Dty Cyc is displayed Pulse measurements are not recommended using Agilent E4412A and E4413A power sensors An example of a pulsed signal is shown in Figure 2 16 Power A Duty Cycle y Ly B Time Figure 2 16 Pulsed signal N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Procedure Set duty cycle as follows sm E 1 Press Channel to display the Channel Setup screen Confirm the channel requiring set
38. contained more than the maximum 12 characters allowed For example SENSeAVERageCOUNt 8 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 113 Undefined header A command was received that is not valid for this power meter You may have misspelled the command it may not be a valid command or you may have the wrong interface selected If you are using the short form of the command remember that it may contain up to four letters For example TRIG SOUR IMM 121 Invalid character in number An invalid character was found in the number specified for a parameter value For example SENS AVER COUN 128 H 123 Exponent too large A numeric parameter was found whose exponent was larger than 32 000 For example SENS COUN 1E34000 124 Too many digits A numeric parameter was found whose mantissa contained more than 255 digits excluding leading zeros 128 Numeric data not allowed A numeric value was received within a command which does not accept a numeric value For example MEM CLE 24 131 Invalid suffix A suffix was incorrectly specified for a numeric parameter You may have misspelled the suffix For example SENS FREQ 200KZ 134 Suffix too long A suffix used contained more than 12 characters For example SENS FREQ 2MHZZZZZZZZZZZ 138 Suffix not allowed A suffix was received following a numeric parameter which does not
39. edit using the O and U keys Press Edit Table to display the Edit Cal screen as shown in Figure 5 10 140 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 m Edit Cal Hame Ref CF 100 0 Freq Cal Fac 0 000MHz 100 0 2 000GHz2 99 5 4 000GHz2 98 9 6 000GHz 98 5 8 000GHz 98 3 Delete 10 000GHz 98 1 11 000GHz 97 8 12 000GHz 97 6 Done Change Insert walt j a 1of1 Figure 5 10 Edit Cal display 3 Highlight the table title using the CL and Y keys Press Change and use the C D and U keys to select and change the characters in the Table Name pop up to create the name you want to use RMT Cancel Hame Ref CF 100 0 Freq Cal Fac Eri 0 000MHz 100 0 2 000GHz2 99 5 Insert Char Delete 485 A Char i 1of1 Figure 5 11 Edit table title pop up e Pressing Insert Char adds a new character to the right of the selected character e Pressing Delete Char removes the selected character 4 Press Enter to complete the entry N1913 1914A EPM Series Power Meters User s Guide 141 5 142 Using 8480 Series Power Sensors A calibration factor in the range of 1 to 150 can be entered The following rules apply to naming sensor calibration tables The name must consist of no more than 12 characters All characters must be upper or lower case alphabetic characters or numeric 0 9 or an underscore _ No other characters are allowed N
40. is automatically selected However for the V8486A W8486A and E8486A 100 sensors the automatic selection must be overridden and the D type correction selected Subsequent connection of another A type sensor will result in a warning message stating that Linearity Override May be Required To select the linearity type to be applied N z e Press System Tables and Linearity to select either Atyp or Dtyp There are a variety of methods to connect the power sensors to the power meter depending on the model of power sensor you are using Refer to Table 2 5 on page 82 for details on connecting different power sensor models e a 1 Press o 20f3 and Ref CFs Verify the reference calibration factor of your power sensor with that displayed under Ref CFs The value shown is obtained from the sensor calibration table if one is selected otherwise it is the last value set or the default of 100 If the value is incorrect press Ref CFs The reference calibration factor pop up window will be displayed Use the numeric keypad to enter the required value in the pop up window 2 Confirm your choice by pressing 3 Press the Cal to start the calibration routine The Calibrating pop up is then displayed the power meter automatically turns on the POWER REF output N1913 1914A EPM Series Power Meters User s Guide 81 2 82 General Power Meter Functions Table 2 5 Power Sensor Connection Requirements Sensor Model Agile
41. of 12 dBm lies in the lower range of the U2000 1 4A sensor In autoranging mode AUTO the power meter determines the average power level is below 10 dBm and selects the low power path However the peak amplitude of 6 dBm is beyond the specified square law response range of the low power path diodes The high power path 10 dBm to 20 dBm should be used to ensure a more accurate measurement of this signal However range holding in UPPER the high power path for a more accurate measurement results in a considerably increased number of filtering processes Speed and Averaging The same signal also requires that consideration is given to measurement speed As shown above in autoranging mode the power meter selects the low power path in the U2000 1 4A sensor With auto averaging also configured minimal filtering is applied Values of one to four for average power levels above 20 dBm are used in the low power path Refer to U2000 Series auto averaging settings on page 170 If the range is held in UPPER for more accuracy the measurement is slower More filtering is applied due to the increase in noise susceptibility at the less sensitive area of the high power path Values of one to 128 for average power levels less than 10 dBm are used Again refer to U2000 Series auto averaging settings on page 170 Manually lowering the filter settings speeds up the measurement but can result in an unwanted level
42. of the problem Send a copy of any or all of the following information Any error messages that appeared on the power meter display Any information on the performance of the power meter CAUTION Power meter damage can result from using packaging materials other than those specified Never use styrene pellets in any shape as packaging materials They do not adequately cushion the power meter or prevent it from shifting in the carton Styrene pellets cause power meter damage by generating static electricity and by lodging in the rear panel e Use the original packaging materials or a strong shipping container that is made of double walled corrugated cardboard with 91 kg 200 lb bursting strength The carton must be both large enough and strong enough to accommodate the power meter and allow at least 3 to 4 inches on all sides of the power meter for packing material 212 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 e Surround the power meter with at least 3 to 4 inches of packing material or enough to prevent the power meter from moving in the carton If packing foam is not available the best alternative is SD 240 Air Cap TM from Sealed Air Corporation Commerce CA 90001 Air Cap looks like a plastic sheet covered with 1 1 4 inch air filled bubbles Use the pink Air Cap to reduce static electricity Wrap the power meter several times in the material to both protect the power meter and prevent it from mov
43. or gain in your test setup The power meter allows you to apply offsets at three different points in the measurement path Channel Functions Window Functions Channel B Upper Window p Lower Window Channel C I Measurement Highway Channel Offset Channel D Channel Offset Figure 2 4 Simplified measurement path N1913 1914A EPM Series Power Meters User s Guide 37 2 38 General Power Meter Functions Figure 2 4 shows that how you can apply a Channel Offset or a Frequency Dependent Offset prior to any mathematical functions These allow you to compensate each channel individually An overall offset can be applied if required using the Display Offset Setting Channel Offsets This gain or loss is applied to the measured power before any mathematical functions display offsets or relative functions are included Offsets are entered in dB and the range is 100 dB to 100 dB The equivalent range in is from 0 0000000001 to 10000000000 A positive value compensates for a loss and a negative value compensates for a gain Procedure To enter a channel offset lonann 1 Press Channel to display the Channel Setup screen Confirm the channel requiring setup is displayed 2 Press Offsets to sanay the Offsets Setup 3 Use the and keys to highlight the Offset setting field 4 Press to check the Offset setting field RMT Offsets Channel A Offset Setup Setup q i Offs
44. power meter and power source i 3 Press Channel The Channel Setup screen displays as below N1913 1914A EPM Series Power Meters User s Guide 55 2 General Power Meter Functions RMT Channel Channel A Setup Setup Sensor Channel gt Range auTO as Channel A Frequency 50 000MHz Meas Avg AUTO p Step Detect V ma ort Offsets gt Figure 2 20 Channel Setup display When 8480 Series N8480 Series E Series E4410 E Series E9300 or U2000 Series sensor is connected Sensor Mode is set to AVG only by default EOT ig 4 Press cS The Trigger menu is displayed 5 Press Acqn softkey to configure the trigger 6 Select either Sing Trig or Cont Trig Sing Trig is a single shot mode After triggering the measurement is halted and the symbol is displayed You can start another a Runz measurement by pressing the Stop i key e ContTrig is a continuous trigger mode The symbol f or 4 is displayed 7 Press Settings to configure the remaining trigger parameters The trigger Settings menu consists of two pages Figure 2 21 shows page 1 and Figure 2 22 shows page 2 56 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Settings i tae Source 43 925 A No Sensor ChB 10f2 gt External trigger source Figure 2 21 Trigger setting menu 1 of 2 Bol Settings 43 925 or Output A No Sensor ChB Kg on i 2of2 Figure 2 22 T
45. power sensors for specification and calibration information The U2000 Series power sensors with firmware revision of A1 02 01 and below are tested with the N1913A N1914A EPM Series power meters 1 November 1986 Hewlett Packard Journal pages 14 2 Diode Integrated Circuits for Milimeter Wave Applications 2 Refer to U2000 Series Operating and Service Guide for maximum power handling specifications N1913A 1914A EPM Series Power Meters User s Guide Using U2000 Series USB Power Sensors 7 Power Meter Configuration The N1913 1914A EPM Series power meters automatically recognize an U2000 Series USB power sensor when it is connected The sensor calibration data is automatically read by the power meter The power meter also configures the auto averaging settings shown in Figure 7 1 to suit the power sensor characteristics These values are valid only for the power meter channel connected with U2000 Series USB power sensors N1913A 1914A EPM Series Power Meters User s Guide User s Guide 169 7 170 Using U2000 Series USB Power Sensors Sensor Dynamic Range High Power Path Low Power Path Expected Power Maximum Sensor Power Resolution Setting U2000 1B U2000 1 2H U2000 1 2 4A WithinaRange 4 2 3 4_ 1 1 14 1 30dBm Ao 20dBm ce eee se eee es l 1 1 1 128 25dBm 15dBm W Pe 1 14 14 542 20 dBm m r EEEE ove ce PPO Y Y 1 1 1 1 A 44dBm A 25dBm A 15dBm WOW owe bee ER Pee
46. test applications such as the radiated immunity test IEC61000 4 3 DC coupling of the U2004A input allows excellent low frequency coverage However the presence of any dc voltages mixed with the signal has an adverse effect on the accuracy of the power measurement CAUTION The U2004A sensor is DC coupled DC voltages in excess of the maximum value 5 VDC can damage the sensing diode 174 N1913A 1914A EPM Series Power Meters User s Guide Using U2000 Series USB Power Sensors 7 Measurement Accuracy and Speed The power meter has no internal ranges The only ranges you can set are those of the U2000 Series USB power sensors With an U2000 Series power sensor the range can be set either automatically or manually Use autoranging when you are unsure of the power level you are about to measure CAUTION To prevent damage to your sensor do not exceed the power levels specified in the sensor user s guide The U2004A sensor is DC coupled DC voltages in excess of the maximum value 5 VDC can damage the sensing diode Setting the Range There are two manual settings LOWER and UPPER The LOWER range uses the more sensitive path and the UPPER range uses the attenuated path in the U2000 Series USB power sensors Sensor LOWER range UPPER range U2000A U2001A U2002A U2004A 60dBmto 10dBm 10dBmto 20dBm U2000H U2001H U2002H 50 dBm to 0 dBm 0 dBm to 30 dBm U2000B U2001B 30 dBm to 20 dBm 20 dBm to 44 d
47. up to create the name you want to use manr Cancel Hame Freq Offset Enes 1000 000GHz 55 00000000 Insert Char Delete WUSTOM_A eet SSS eee 1of1 Figure 2 11 Edit table title pop up e Pressing Insert Char adds a new character to the right of the selected character e Pressing Delete Char removes the selected character 4 Press Enter to complete the entry N1913 1914A EPM Series Power Meters User s Guide 45 2 46 General Power Meter Functions The following rules apply to naming sensor calibration tables The name must consist of no more than 12 characters All characters must be upper or lower case alphabetic characters or numeric 0 9 or an underscore _ No other characters are allowed No spaces are allowed in the name Enter or edit the frequency and offset pairs as follows 1 Press Insert to add a new frequency value or press Change to edit Use the numeric keypad to enter the required value in the Frequency pop up window Complete the entry by pressing the GHz MHz keys Enter the new offset value or press Change to edit Use the numeric keypad to enter the required value in the Offset pop up window Complete the entry by pressing the key Hame PEO Freq Offset Gu 50 000MHz 0 00000000 8 000GHz 4 00000000 gE E 1of1 Figure 2 12 Changing offset unit 3 Continue adding editing values until you have entered all the data you require 4 When you have finished e
48. 00 829 4433 Canada tel 877 894 4414 fax 800 746 4866 China tel 800 810 0189 fax 800 820 2816 Europe tel 31 20 547 2111 Japan tel 81 426 56 7832 fax 81 426 56 7840 Korea tel 080 7690800 fax 080 769 0900 Latin America tel 305 269 7500 Taiwan tel 0800 047 866 fax 0800 286 331 Other Asia Pacific Countries tel 65 6375 8100 fax 65 6755 0042 Or visit Agilent World Wide Web at www agilent com find assist Product specifications and descriptions in this document are subject to change without notice Always refer to the English version at the Agilent Web site for the latest revision Agilent Technologies Inc 2009 2014 Printed in Malaysia Fourteenth Edition May 8 2014 N1913 90001 Agilent Technologies
49. 16 Set the power source trigger input and trigger output then start sweeping 17 Poll the status of the power meter by sending ESR ESR will return a 1 when buffering is completed Use FETCh to retrieve all the buffered measurement N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Frequency Sweep Mode Frequency sweep is generally used in a frequency response calibration system where the amplitude is fixed and the frequency of the power source signal is swept This mode can be used to determine the frequency response of a device under test This feature is only available when N8480 Series E Series E4410 or E Series E9300 sensor is connected Procedures 1 Connect sensor to a power source 2 Connect power meter TRIG OUT to power source TRIG IN using a BNC cable The same connection is applied for power source TRIG OUT to power meter TRIG IN See Figure 2 19 Channel 3 Press channel The Channel Setup displays as shown in Figure 2 20 When N8480 Series E Series E4410 E Series E9300 or U2000 Series sensor is connected Sensor Mode is set to AVG only by default os Trig A Press proren The Trigger menu is displayed Press Acqn softkey to configure a trigger Select either Sing Trig or Cont Trig y Oo ol A Press Settings to configure the remaining trigger parameters The trigger Settings menu consists of two pages Figure 2 21 shows page 1 and Figure 2 22 shows page 2
50. 2 59 VGA toggle ON OFF 94 Figure 2 60 Enable disable warm start feature 95 Figure 2 61 Running under battery power pop up 96 Figure 2 62 Battery indicator 97 Figure 2 63 Battery menu 97 Figure 2 64 Battery status display 98 Figure 2 65 Low battery indicator 98 Figure 2 66 Display backlight control 99 Figure 2 67 Short long cable option 102 Figure 3 1 E9300 E Series auto averaging settings 105 Figure 3 2 E9300 E Series sensor default channel setup 106 Figure 3 4 Frequency pop up 109 Figure 3 5 Spread spectrum signal 110 Figure 3 6 Wideband CDMA error of E Series E9300 power sensor versus corrected CW sensor 111 Figure 3 7 CDMA IS 95A 9Ch Fwd 111 Figure 3 8 Calibration factors versus frequency 112 Figure 4 1 E Series CW sensor auto averaging settings 121 Figure 4 2 E Series E4410 sensor default channel setup 122 Figure 4 3 Frequency pop up 124 Figure 5 1 8480 Series auto averaging settings 127 Figure 5 2 8480 Series sensor default channel setup 128 Figure 5 3 Reference Calibration Factor pop up window 133 Figure 5 4 Calibration factor pop up window 134 Figure 5 5 Calibration factor display 134 Figure 5 6 Sensor table selected 137 Figure 5 7 Frequency dependent offset indicator 137 Figure 5 8 Frequency calibration table display 138 Figure 5 9 Sensor Tbls screen 140 Figure 5 10 Edit Cal display 141 Figure 5 11 Edit table title pop up 141 Figure 6 1 Auto averaging settings 149 Figure 6 2 N8480 Series s
51. 4A EPM Series power meters using the Web interface The instrument Web interface can be accessed from Agilent Connection Expert as shown in Figure 1 4 NOTE Alternatively the instrument Web interface can also be accessed directly from a Web broswer by entering the instrument s IP address or hostname in the browser s address window o n Expert seg Ble Edt View JO Configuration Tools Help Z Refteshal 2 Undo DProperties Interactive 10 MB Add Instument Py Addintertace Y Delete s aanne O meihe a SN 3 com su GF coms ASRL4 F COM ASRL7 VISA address TCPIPO 141 183 237 33 instO INSTR amp LAN TCPIPO 5 TCPIPO 141 183 237 33 5025 5OCKET Instrument Web Interface N1914A TCPIPO 141 183 237 33 inst0 IN 4 al n IDN string Agilent Technologies N1 91 4A MY480044HQ X2 3 15 Manufacturer Agilent Technologies Model code N1914A Serial number MY480044HQ Firmware x2 3 15 IP address 141 183 237 338 SICL address lan 141 183 237 33 insto Address check Yes Auto identify Yes ESS Figure 1 4 Accessing the instrument Web interface Agilent N1913 1914A EPM Series Power Meters User s Guide 17 1 Introduction 18 An example of the instrument Web interface Welcome Page is shown in Figure 1 5 LXI Agilent Technologies N1914A EPM Series Power Meter Windows Internet Explorer DES OO Sittwenisrse 00118 mys aglent com j SB 5 foc Live search ae Ble Edt Yew Favorit
52. 5 4 39 GHz 91 24 GHz 95 40 GHz 90 7 25 GHz 95 4 41 GHz 90 3 26 GHz 95 2 42 GHz 89 5 27 GHz 95 1 43 GHz 88 5 28 GHz 95 44 GHz 88 7 29 GHz 94 4 45 GHz 88 2 30 GHz 94 46 GHz 87 31 GHz 93 7 47 GHz 86 4 32 GHz 93 8 48 GHz 85 3 33 GHz 93 49 GHz 84 7 34 GHz 93 2 50 GHz 82 9 N1913 1914A EPM Series Power Meters User s Guide 145 5 Using 8480 Series Power Sensors THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK 146 N1913 1914A EPM Series Power Meters User s Guide s N1913 1914A EPM Series Power Meters User s Guide ee 6 Using N8480 Series Power Sensors 8 e e j Introduction 148 Power Meter Configuration Changes 149 Default Channel Setup 150 N8480 Series Sensors Connection Requirements 151 N8480 Series Power Sensors excluding Option CFT 152 N8480 Series Power Sensors with Option CFT 154 This chapter describes how to use your N8480 Series power sensors with N1913 1914A EPM Series power meters te Agilent Technologies 147 6 Introduction 148 Using N8480 Series Power Sensors The N8480 Series power sensors are replacement for the 8480 Series power sensors excluding the D model sensors with build in Electrically Erasable Programmable Read Only Memory EEPROM The N8480 Series power sensors are used for measuring the average power supplied by RF or microwave source or a device under test DUT The N8480 Series power sensors place a 50 Q load on the RF or microwave source T
53. 65 2 General Power Meter Functions Numeric Format Configure a measurement displayed in Single Numeric or Dual Numeric format as follows r gt Meas s e Press J Meas Select to select the measurement window or to measurement line you want to configure _RMT Meas Setup 2 Measurement Setup Selected Window Upper Window Upper Measurement Meas Measurements Chan Gate Meas _ Combination Select Channel Field _____Feedg a 7 SINGLE lt a Function Field Feed2 E set Result Relative Rei 0 0 49 10dBm Hold off Min Power Max Power Limits Rec oip Off eee Figure 2 27 Measurement Setup showing single configuration Measurement Field 66 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Single Function Measurement Figure 2 27 shows an average measurement assigned in the upper measurement line of the upper window For single channel power meter N1913A the Channel field will be disabled as shown in Figure 2 27 The gate field is disabled if trigger acquisition is Free Run 1 Use the QJ L U to highlight the Combination function field 2 Press to display the Function pop up and use the and VU to highlight Single Single Combined Figure 2 28 Function pop up 3 Press to complete the entry 4 The Meas field is set to Avg by default Q Prev 7 5 Press Cx key to complete the setup and display the measurem
54. 914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Power Sensor Zero Drift Measurement Noise N8486A R exclude Option CFT lt t3nW lt 80nwW N8486A Q exclude Option CFT lt 3 nW lt 80 nW N8487A exclude Option CF lt 3nw lt snw N8488A exclude Option CFT lt 3 nW lt 80 nW N8481B exclude Option CF lt t3uW lt 80uW N8482B exclude Option CFT lt 3 uW lt 80 uW N8481H exclude Option CFT lt 0 3 uW lt 8 uW N8482H exclude Option CFT lt 0 3 yW lt 8 yW N8481A with Option CFT lt 7 nW lt 114 nW N8482A with Option CFT lt 7nW lt 114nW N8485A with Option cFT lt 7 nW lt 114 nW N8486A R with Option CFT lt 7 nW lt 114 nW N8486A Q with Option CFT lt 7 nW lt 114nW N8487A with Option CFT lt 7 nW lt 114 nW N8481B with Option CFT lt 7 pW lt 114 uW N8482B with Option CFT lt 7 uW lt 114 uW N8481H with Option CFT lt 0 7 pW lt 11 4 pW N8482H with Option CFT lt 0 7 yW lt 11 4 uW 1 Within one hour after zero set at a constant temperature after a 24 hour warm up of the power meter 2 The number of averages at 16 for normal mode and 32 for x2 mode at a constant tem perature measured over a one minute interval and two standard deviations For Agilent E Series power sensors the measurement noise is measured within the low range Refer to the relevant power sensor m
55. A 1914A EPM Series Power Meters User s Guide Agilent N1913 1914A EPM Series Power Meters User s Guide e00 eece 10 Specifications and Characteristics J e j j Introduction 216 Power Meter Specifications 218 Power Sensor Specifications 219 Power Meter Supplemental Characteristics 223 Measurement Characteristics 232 Rear Panel Inputs and Output Connections 233 1 mW Power Reference 234 Environmental Conditions 235 Physical Characteristics 236 Regulatory Information 237 This chapter describes the specifications and characteristics of your N1913 1914A EPM Series power meter te Agilent Technologies 215 10 Specifications and Characteristics Introduction This chapter details the N1913 1914A EPM Series power meters specifications and supplemental characteristics Specification Definitions There are two types of product specifications e Warranted specifications e Characteristic specifications Warranted specifications Warranted specifications are covered by the product warranty and apply after a 30 minute warm up These specifications are valid over the power meter s operating and environmental range unless otherwise stated and after performing a zero and calibration Characteristic specifications Supplemental characteristics which are shown in italics are intended to provide information useful in applying the power meter by giving typical but non warranted performance parameters The
56. Agilent N1913 1914A EPM Series Power Meters User s Guide ott Agilent Technologies Notices Agilent Technologies Inc 2009 2014 No part of this manual may be reproduced in any form or by any means including elec tronic storage and retrieval or translation into a foreign language without prior agree ment and written consent from Agilent Technologies Inc as governed by United States and international copyright laws Manual Part Number N1913 90001 Edition Fourteenth Edition May 8 2014 Printed in Malaysia Agilent Technologies Inc 5301 Stevens Creek Blvd Santa Clara CA 95052 USA Warranty The material contained in this docu ment is provided as is and is sub ject to being changed without notice in future editions Further to the max imum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connec tion with the furnishing use or per formance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the sep arate a
57. Agilent will at its option either repair or replace products which prove to be defective The warranty period begins on the date of delivery or on the date of installation if installed by Agilent For warranty service or repair this product must be returned to a service facility designated by Agilent For products returned to Agilent for warranty service the Buyer shall prepay shipping charges to Agilent and Agilent 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 Agilent from another country Limitation of Warranty Exclusive Remedies The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Buyer Buyer supplied products or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance The design and implementation of any circuit on this product is the sole responsibility of the Buyer Agilent does not warrant the Buyer s circuitry or malfunctions of Agilent products that result from the Buyer s circuitry In addition Agilent does not warrant any damage that occurs as a result of the Buyer s circuit or any defects that result from Buyer supplied products To the extent allowed by local law Agilent makes no other warranty expressed or implied whether written or oral with respect
58. B A8 44 A 10 48 44dBm Yy namnam arora Figure 1 2 Single numeric and analog display Channel 4 lt j 11 Sns 848xA Ofs 0dB Acq Free run 12 Channel B Ho Sensor Figure 1 2 shows the default display mode of two measurement windows 8 The channel measurement frequency 9 The upper window is configured to show a single numeric display 10 The lower window is configured to show an analog meter which displays the measurement result and the meter scaling 11 This displays the connected sensor the offset value and the acquisition mode on the channel On dual channel models it shows for both channels 12 The blue highlight on the right hand side of the window shows it is the currently selected measurement display line Using the O Y or 4 keys you can change the measurement window selection ae Using the Ciis key on numeric measurement results window you can choose either two rectangular windows a single enlarged window or a full screen display The display style is applied to the currently selected window or measurement line Agilent N1913 1914A EPM Series Power Meters User s Guide 11 1 Introduction RMT CF 100 0 Dty s Rel lt a _ 17 14 A Cyc Over Lmt lt _ __ 18 10 90 13 Minimum Hold dB Peal er Figure 1 3 Full screen numeric display Figure 1 3 shows a single numeric full screen displaying a relative result 13 This field displays Minimum Hold if range h
59. Bm The default is AUTO In AUTO the range crossover value depends on the sensor model being used Sensor Range Crossover Values U2000A U2001A U2002A U2004A 10 dBm 1 dB U2000H U2001H U2002H 0 dBm 1 dB U2000B U2001B 20 dBm 1 dB N1913A 1914A EPM Series Power Meters User s Guide User s Guide 175 7 176 Using U2000 Series USB Power Sensors Procedure Set the range as follows fs 1 Press Channel On dual channel meters select the required channel Es 2 The Range setting field will be selected Press to display the Range pop up 3 Use the L and U keys to select the required setting 4 Press to complete the entry Measurement Considerations While autoranging is a good starting point it is not ideal for all measurements Signal conditions such as crest factor or duty cycle may cause the power meter to select a range which is not the optimum configuration for your specific measurement needs Signals with average power levels close to the range switch point require you to consider your needs for measurement accuracy and speed For example using an U2000 1 4A sensor where the range switch point is 10 1 dBm ina pulsed signal configured as follows Characteristic Value Peak Amplitude 6 dBm Duty Cycle 25 The calculated average power is 12 dBm N1913A 1914A EPM Series Power Meters User s Guide Using U2000 Series USB Power Sensors 7 Accuracy The value
60. CF 100 0 50 0MHz2 A Offset Table A Selected 239 913 J dBm Figure 2 9 Frequency dependent offset indicator Channel B Ba Cannnr pmm a A m 5 To change the frequency press Channel and use the LJ and keys to highlight the Frequency field 6 Press to display the Frequency pop up window Use the numeric keypad to enter the required value in the Frequency pop up window 7 To confirm your choice press the appropriate unit softkey Connect the power sensor to the signal to be measured 9 The measurement result including offset is now displayed If the measurement frequency does not correspond directly to a frequency in the sensor calibration table if selected and the frequency dependent offset table being used the power meter calculates the calibration factor and offset using linear interpolation If you enter a frequency outside the frequency range defined in the sensor calibration table or the frequency dependent offset table the power meter uses the highest or lowest frequency point in the appropriate table to set the calibration factor and offset N1913 1914A EPM Series Power Meters User s Guide 43 2 General Power Meter Functions Editing Frequency Dependent Offset Tables There are ten frequency dependent offset tables named CUSTOM_A through CUSTOM_J They are empty of any data when the power meter is shipped from the factory You cannot delete any of the 10 existing frequency dependent offset tables or creat
61. Chapter 2 Editing a Register s Name starting on page 76 otherwise press Save 3 The power meter prompts you to press Confirm to proceed r Please Confirm Figure 2 38 Save confirm pop up N1913 1914A EPM Series Power Meters User s Guide 75 2 76 General Power Meter Functions Editing a Register s Name i 1 If you have not already done so press System Save Recall 2 Use the LJ and V keys to select the required register and press Edit Name The selected name is displayed in a pop up window Modify this as required Figure 2 39 File name pop up 3 Use L ana V keys to modify the character on which the cursor is currently positioned 4 Use GC or D to move to other characters 5 Use Insert Char and Delete Char as required To confirm your choice press Enter Recalling a Measurement Setup oS f System 1 Press __ Save Recall gt 2 Use the _ and Y keys to select the required register and press Recall The Recall key is disabled grayed out when an unused register is selected Please Confirm Figure 2 40 Recall pop up 3 Press Confirm N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Zeroing and Calibrating the Power Meter This section describes how to zero and calibrate the power meter You should always zero the power meter prior to calibrating it Zeroing the Power Meter Zeroing adjusts the power meter for a zero power r
62. D is green When the meter is powered on the start up will take approximately 25 seconds Agilent N1913 1914A EPM Series Power Meters User s Guide 5 1 Introduction Series Power Meter xt Agilent wens These keys are located along the lower edge of the display Key Function SEN Press this key to access general configuration menus such as GPIB System address You can also access some measurement configuration menus Sr The measurement screen remains visible P Press this key to access the channel configuration menus Channel g x n Channel parameters such as averaging and offsets are configured from this od menu P Press this key to access the triggering menu The triggering feature will Tronca be made available in future for power sensors with triggering capability aor P E Press this key to setup relative measurements or set display offsets 7 r H 1 Meas Use this key to configure the selected measurement Ye ATN Press this key to access the measurement display menu You can i Display choose the displayed measurement resolution units and display format aa GER g jt Use this key together with Meas to configure measurement displays E 6 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 i il N1914A 3 M cine These keys are all associated with the menu labels and data entry They are located to the right of the display Function
63. Display Units Select the unit of measurement from dBm W dB and Softkeys which cannot be selected in your particular mode of operation are grayed out When the measurement unit is set to Watt W it is possible that negative power results are displayed when measuring low power levels Table 2 1 Measurement units Single channel meters Measurement Mode Relative Mode Off Relative Mode On Log dBm dB Linear Watt Table 2 2 Measurement units Dual channel meters Measurement Mode Relative Mode Off Relative Mode On Ratio Log dB dB Linear Difference Log dBm dB Linear Watt N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Setting the Measurement Frequency Entering the frequency of the RF signal you are measuring optimizes the accuracy and minimizes measurement uncertainty especially when making comparative measurements between signals Procedure Set the measurement frequency as follows a g ji 1 Press Channel On dual channel meters select the required channel 2 Use the L and V keys to highlight the Frequency value field and press to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window Figure 2 1 Frequency pop up 3 Confirm your choice by pressing MHz or GHz 4 Press _ key to close the Channel Setup screen N1913 1914A EPM Series Power Meters User s Guide 33 2 General
64. Environmental condition Requirement Operating condition e 0 C to 55 C Temperature Storage condition 40 C to 70 C Operating condition 9 o i Humidity Up to 95 RH at 40 C non condensing Storage condition Up to 90 RH at 65 C non condensing Altitude Up to 4600 m Pollution degree 2 Regulatory Information The N1913 1914A EPM Series power meters comply with the following safety and Electromagnetic Compatibility EMC compliances Safety compliance e IEC 61010 1 2010 EN 61010 1 2010 3rd Edition Canada CAN CSA C22 2 No 61010 1 12 USA ANSI UL 61010 1 3rd Edition EMC compliance IEC 61326 1 2005 EN 61326 1 2006 CISPR11 2003 EN 55011 2007 Group 1 Class A Canada ICES NMB 001 Issue 4 June 2006 Australia New Zealand AS NZS CISPR 11 2004 Regulatory Markings CE The CE mark is a registered trademark of the European Community This CE mark shows that the product complies with all the relevant European Legal N10149 The C tick mark is a registered trademark of the Spectrum Management Agency of Australia This signifies compliance with the Australia EMC Framework ISM 1 A Directives regulations under the terms of the Radio Communication Act of 1992 P i This instrument complies with the ee ME TO indicates that thisISM WEEE Directive 2002 96 EC marking device complieswvith the Canadian requirement This affixed product label ICES NMB 001 CES 001 i Cet appareil ISM est confomr
65. In the Service menu press 1 of2 and select Display 3 Press Display to toggle ON OFF the VGA feature see Figure 2 59 RMT A CF 100 00 A910 dam A Ho Sensor ChB Blank Screen A Ho Sensor ChC Secure Blank A Ho Sensor ChD nna 1of1 Figure 2 59 VGA toggle ON OFF Display VGA Ki On N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Warm Start The warm start feature allows you to retain the meter s same states and settings upon power cycle or in the event of interrupted power The warm start ON OFF is selectable through the front panel and SCPI The default setting is ON Warm start ON All the states entered through the front panel or remote interface will be saved The power meter will be powered on with the states before it was powered off Warm start OFF The power meter will be powered on with the default states setting To enable or disable the warm start feature 1 Press SYS 6F2 and select Service nae 2 In the Service menu press Warm Start Off On to enable or disable the warm start feature This feature is set to ON by default see Figure 2 60 C soomnz H 6 3 8 Bm to Figure 2 60 Enable disable warm start feature N1913 1914A EPM Series Power Meters User s Guide 95 2 General Power Meter Functions Battery Information Optional The battery pack is designed for portable usage to areas where AC supply is not easily
66. M Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 CDMA Signal Measurements Figure 3 6 and Figure 3 7 show typical results obtained when measuring a CDMA signal In these examples the error is determined by measuring the source at the amplitude of interest with and without CDMA modulation adding attenuation until the difference between the two values stops changing The CW sensor in Figure 3 6 uses correction factors to correct for power levels beyond its square law operating region Lower Range Error Upper Range Error A CW Sensor Error co 2 5 uw Power dBm Figure 3 6 Wideband CDMA error of E Series E9300 power sensor versus corrected CW sensor Lower Range Error Upper Range Error Modulation Error dB E9300 E Series power sensor only shown Power dBm Figure 3 7 CDMA IS 95A 9Ch Fwd N1913 1914A EPM Series Power Meters User s Guide User s Guide 111 3 Using E9300 E Series Power Sensors Multitone Signal Measurements In addition to wide dynamic range the E9300 E Series power sensors also have an exceptionally flat calibration factor versus frequency response as shown in Figure 3 8 This is ideal for amplifier intermodulation distortion measurements where the components of the two tone or multitone test signal can be separated by hundreds of MHz Typical upper range calibration factor a is S f uw T o 10 Frequency GHz
67. RMT Channel A ni Sns 93044 Ofs A CF 100 00 Acq Free run 50 0MHz Finer Ho Sensor 90 00 d B m Channel D Ho Sensor Minimum Hold Figure 2 34 Measurement mode in full word N1913 1914A EPM Series Power Meters User s Guide 71 2 General Power Meter Functions Recorder Output 72 The rear panel Recorder Output connectors 1 and 2 produce a dc voltage that corresponds to the power level in Watts of the selected measurement window This dc voltage ranges from 0 to 1 Vdc The output impedance is typically 1 kQ For example the Recorder Outputs can be used to e Record swept measurements e Level an output from a source using external leveling or e Monitor the output power lt gt a To access the Recorder menu press Meas and enable Rec o p This allows you to switch the Recorder Output signal on or off and set the scaling of power levels automatically or manually The Max Power and Min Power softkeys allow you to manually scale the power levels to represent the 1 Vdc maximum and 0 Vdc minimum output voltage of the Recorder Output Otherwise you can set the Recorder Output to Auto to enable auto scaling In auto scaling the minimum power is fixed at 150 dBm and the maximum power is automatically scaled based on the current power level The auto scaled maximum power ranges from 140 dBm steps every 10 dBm until 230 dBm depending on the current power level The auto scaling is not ap
68. RRection CSET 1 CSET2 STATe is set to ON and the frequency and calibration offset lists do not correspond in length Agilent N1913A 1914A EPM Series Power Meters User s Guide 201 9 202 Maintenance 230 230 Data corrupt or stale This occurs when a FETC is attempted and either a reset has been received or the power meter state has changed such that the current measurement is invalidated for example a change of frequency setting or triggering conditions Data corrupt or stale Please zero and calibrate Channel A When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel A has not been zeroed and calibrated then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message 230 Data corrupt or stale Please zero and calibrate Channel B When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel B has not been zeroed and calibrated then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message 230 Data corrupt or stale Please zero Channel A When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel A has not been zeroed then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message 230 Data corrupt or stale Pl
69. Selected window Upper Window Upper Measurement eae measurement go H Meas Combination Select E Feed1 A SINGLE ae Feed 6 fai setting field 9 set Result newez neij essmanm 280809 8g Relative field i Min Power Max Power Limits Rec oip Off 180 000dB 10 000dB Original result ee Figure 2 2 Typical relative measurement display 4 Press to check the Relative setting field 5 Confirm that the power meter is measuring the signal you want to use as the reference This is displayed under the Result field 6 Press the C D key to highlight the Rel field N1913 1914A EPM Series Power Meters User s Guide 35 2 36 General Power Meter Functions 7 Press and the original result value will appear on the right hand side of the Rel check field 8 The relative value displayed under Result field will change as the measured signal varies If you return the power meter to display the numeric display a Rel symbol will be displayed in the measurement window it is applied to RMT A CF 121 88 Rel 50 0GHz 1 374a Figure 2 3 Numeric display isp Form Disp gt Type Trace Table Feed Ch A Relative indicator The Rel symbol is not displayed when the associated measurement is displayed in Dual Numeric or Analog format N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Setting Offsets The power meter can be configured to compensate for a signal loss
70. Series E4410 E Series 8480 Series N8480 Series and the U2000 Series power sensors and the U8480 Series thermocouple sensor However not all sensor and meter combinations have the same features or capabilities The main differences are as below 1 Features E Series E Series 8480 N8480 U2000 U8480 E9300 E4410 Series Series Series Series Average power of CW signal r Average power of modulated signal b Cal factors stored on EEPROM m l Correction factors stored in a 3 MB 4 Flash memory gt 200 readings sec 1 Not applicable for N8480 Series power sensors with Option CFT The E Series and 8480 Series power sensors require the Agilent 11730A power sensor cable when connected to the N1913 1914A EPM Series power meters Specifications The specifications for the power meter are listed in Chapter 10 Specifications and Characteristics starting on page 215 Agilent N1913 1914A EPM Series Power Meters User s Guide 1 Introduction Conventions Used in this Guide The following conventions are used throughout this guide Ty Channel Softkey This symbol and text represents a labeled key on the power meter front panel This symbol and text represents a labeled softkey and is used to indicate that you should press the unmarked key beside the displayed text Message This text represents a displayed message Parameter This is used to repre
71. Series sensors with Option CFT 2 Recommended for pulse signals measurement with period of more than one second N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Power Meter Configuration Changes The N1913 1914A EPM Series power meter recognizes when a N8480 Series power sensor is connected The N8480 Series power sensors excluding Option CFT calibration data is automatically read by the power meter In addition the auto averaging settings shown in Figure 6 1 are automatically configured Maximum Resolution Setting N8481 2 5A Sensor Power 1 2 3 v 2 2 4 32 D S S 1 dBm g 2 2 4 32 cc 5 3 e eo 10dBm gt 5 gt ace 2 2 16 26 e gt cc Di paaa e a el a erat i ct a gt a lt 5 2 8 128 128 z 8 30 dBm ss ee ee ee eee ee eee 2 A a Minimum Sensor Power Figure 6 1 Auto averaging settings These values are valid only for the power meter channel connected to a N8480 Series power sensor Averaging settings can also be manually configured Refer to Setting Measurement Averaging on page 49 for more details N1913 1914A EPM Series Power Meters User s Guide 149 6 Using N8480 Series Power Sensors Default Channel Setup 150 When a N8480 Series power sensor is connected the following Channel Setup is automatically configured Presetting returns the channel to this configuration Channel Channel a
72. USB power sensors with serial prefix as shown below U2000A Serial prefix MY480 SG480 and above U2001A Serial prefix MY481 SG481 and above U2002A Serial prefix MY482 SG482 and above U2004A Serial prefix MY484 SG484 and above For power sensors with earlier prefixes refer to the Agilent U2000 Series USB Power Sensors Operating and Service Guide Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Power Meter Supplemental Characteristics Zero Drift of Sensors This parameter is also called long term stability and is the change in the power meter indication over a long time within one hour at a constant temperature after a 24 hour warm up of the power meter Power sensor dependent refer to Table 10 4 Measurement Noise Power sensor dependent refer to Table 10 3 and Table 10 4 Averaging effects on measurement noise Averaging over 1 to 1024 readings is available for reducing noise Table 10 4 provides the measurement noise for a particular power sensor with the number of averages set to 16 for normal mode and 32 for x2 mode Use the Noise Multiplier for the appropriate mode normal or x2 and number of averages to determine the total measurement noise value For example for an Agilent 8481D power sensor in normal mode with the number of averages set to 4 the measurement noise is equal to lt 45 pW x 2 75 lt 124 pW Table 10 3 Noise Multiplier Number of Averages
73. User s Guide Power Meter Configuration The N1913 1914A EPM Series power meters automatically recognize an Using E9300 E Series Power Sensors 3 E Series E9300 power sensor when it is connected The sensor calibration data is automatically read by the power meter The power meter also configures the auto averaging settings shown in Figure 3 1 to suit the power sensor characteristics E9300 1 4A 10 dBm 2dBm 4dBm Upper Range 10 dBm 20 dBm Sensor Dynamic Range 30 dBm 40 dBm Lower Range 50 dBm E9300 1H 20 dBm 12 dBm 6 dBm 0 dBm 10 dBm 20 dBm 30 dBm 40 dBm E9300 1B Maximum Sensor Power Minimum Sensor Power Figure 3 1 9300 E Series auto averaging settings Resolution Setting 2 1 3 1 16 128 16 64 256 safesany jo saquinyy These values are valid only for the power meter channel connected with E Series E9300 power sensor You can also configure the settings manually refer to Achieving Stable Results with TDMA Signals on page 113 if required N1913 1914A EPM Series Power Meters User s Guide User s Guide 105 3 Using E9300 E Series Power Sensors Default Channel Setup When an E Series E9300 power sensor is connected the following Channel Setup is automatically configured Carrying out a Preset returns the power meter to this configuration Channel Channel A Setup Setup Sensor i Channel gt Range AUTO me
74. ables is based on statistical averages for a range of Agilent Technologies power sensors Your own sensor will most likely differ from the typical to some degree If you require best accuracy create a custom table for each sensor you use as shown in Editing Generating Sensor Calibration Tables on page 163 To use calibration factor tables 1 Select the sensor calibration table to be applied to a channel 2 Zero and calibrate the power meter The reference calibration factor used during the calibration is automatically set by the power meter from the sensor calibration table 3 Specify the frequency of the signal you want to measure The calibration factor is automatically set by the power meter from the sensor calibration table 4 Make the measurement N1913 1914A EPM Series Power Meters User s Guide 159 6 Using N8480 Series Power Sensors Selecting a Sensor Calibration Table ie o You can select a calibration factor table from the S key menu followed by Tables and Sensor Cal Table The State column indicates if any calibration factor tables are currently selected The Sensor Tbls screen is shown in Figure 6 8 You can also view which sensor table is being used by pressing the Offset and one and keys to highlight the CF Table setting field and press to display the table Procedure Select sensor calibration table as follows g g i System 1 Press erstem Tables Sen
75. al Tables _ The Sensor Tbls screen is displayed as ae shown in Figure 5 6 Table 5 2 Installed power sensor models Table Sensor Model Table Sensor Model 0 DEFAULT 5 8485A 1 8481A 6 R8486A 2 8482A 7 08486A 3 8483A 8 R8486D 4 8481D 9 8487A 1 DEFAULT is a sensor calibration table where the reference calibration factor and calibration factors are 100 This sensor calibration table can be used during the performance testing of the power meter 2 The 8482B and 8482H power sensors use the same data as the 8482A There are also ten sensor calibration tables named CUSTOM_0 through CUSTOM_9 These tables do not contain any data when the power meter is shipped from the factory N1913 1914A EPM Series Power Meters User s Guide 139 5 Using 8480 Series Power Sensors Editing frequency dependent offset tables requires the following steps 1 Identify and select the table you want to edit 2 Rename the table 3 Enter the frequency and offset pairs 4 Save the table Procedure First select the table you want to edit as follows Gy g 1 Press System Tables Sensor Cal Tables to display the Sensor Tbls a screen Sensor Tbis Tbl Hame State Pts 0 off 2 Edit 41 84810 off 19 Table 2 8482A off 12 3 8483A off 10 A Table 4 8481D off 21 Ei On 5 8485A off 22 6 RS486A off 17 oe 7 8486 off 19 ail On 8 R8486D off 9 84874 off Done a BN 1of1 Figure 5 9 Sensor Tbls screen 2 Choose the table you want to
76. am the power meter from the remote interface The default language is SCPI when the power meter is shipped from the factory The power meter complies with the rules and regulations of the 1996 0 version of SCPI Standard Commands for Programmable Instruments You can determine the SCPI version with which the power meter is in compliance by sending the SYSTem VERSion command from the remote interface You cannot query the SCPI version from the front panel The language selection is stored in non volatile memory and does not change when power has been off or after a remote interface reset To select the interface language from the front panel N1913A 1 Press Remote Interfaces 10f2 and Command Set 2 Select the language from HP 436A HP 437B and scpil To select the interface language from the front panel N1914 lt A 1 Press Remote Interfaces 1 of 2 and Command Set 2 Select the language from HP 438Al and scpi To select the interface language from the remote interface use the SYSTem LANGuage command Option 200 can only support 8480 series N8480 series CFT option and E4412 3A power sensors 1 HP 436A HP 437B and HP 438A language modes are not compatible with LAN or USBTM remote interface 2 SCPI is the default factory setting License is needed for the other languages to be available Agilent N1913 1914A EPM Series Power Meters User s Guide 29 1 30 Introduction
77. anual for further information 3 Specification applies to the low power path 15 to 75 relative humidity 4 The zero drift and measurement noise specifications are tested at 50 MHz Agilent N1913 1914A EPM Series Power Meters User s Guide 225 10 Specifications and Characteristics 226 Table 10 5 U2000 Series power sensors specifications Power sensor Range ZeroDrift Measurement Noise U2000 1 2A 60 dBm to 35 dBm 200pw InW 38 dBm to 15 dBm 400 pW 1 5 nW 20 dBm to 9 dBm 1 5 nW 15 nW 11 dBm to 5 dBm 50 nW 650 nW 7 dBm to 15 dBm 500 nW 1 pW 10 dBm to 20 dBm 2 uW 10 uW U2004A 60 dBm to 35 dBm 200 pW 1nW 38 dBm to 15 dBm 400 pW 1 5nW 20 dBm to 9 dBm 1 5 nW 15 nW 11 dBm to 5 dBm 50 nW 650 nW 7 dBm to 15 dBm 500 nW 1 pW 10 dBm to 20 dBm 2 uW 10 pW U2000 1 2H 50 dBm to 25 dBm 2nW 10nW 28 dBm to 5 dBm 4nw 15 nW 10 dBm to 1 dBm 15 nW 150 nW 1 dBm to 5 dBm 500 nW 6 5 pW 3 dBm to 25 dBm 5 uW 10 pW 20 dBm to 30 dBm 20 pW 100 pW U2000 1B 30 dBm to 5 dBm 200 nW 1 pW 8 dBm to 15 dBm 400 nW 1 5 pW 10 dBm to 21 dBm 1 5 pW 15 pW 19 dBm to 25 dBm 50 nW 650 pW 23 dBm to 44 dBm 500 pW 1mW The Zero Drift and Measurement Noise specifications are only applicable to U2000 Series USB power sensors with serial prefix as shown below U2000A Serial pref
78. asurement Accuracy 131 Frequency Specific Calibration Factors 132 Sensor Calibration Tables 136 6 Using N8480 Series Power Sensors Introduction 148 Power Meter Configuration Changes 149 Default Channel Setup 150 N8480 Series Sensors Connection Requirements N8480 Series Power Sensors excluding Option CFT N8480 Series Power Sensors with Option CFT 7 Using U2000 Series USB Power Sensors Introduction 168 Power Meter Configuration 169 Measurement Accuracy 172 Electromagnetic Compatibility EMC Measurements Measurement Accuracy and Speed 175 8 Using U8480 Series USB Thermocouple Sensors Introduction 180 Power Meter Configuration 181 Measurement Accuracy 183 Zeroing 185 Calibrating 187 Zerot Cal 189 FDO Table Editing 189 Reference Manual 190 xvii xviii 9 Maintenance Self Test 192 Error Messages 196 Operator Maintenance 207 Contacting Agilent Technologies 208 Erasing Memory Data 211 Returning Your Power Meter for Service 212 Agilent Sales and Service Offices 214 10 Specifications and Characteristics Introduction 216 Power Meter Specifications 218 Power Sensor Specifications 219 Power Meter Supplemental Characteristics 223 Measurement Characteristics 232 Rear Panel Inputs and Output Connections 233 1 mW Power Reference 234 Environmental Conditions 235 Physical Characteristics 236 Regulatory Information 237 List of Figures Figure 1 1 Dual numeric display 10 Figure 1 2 Single numeric and
79. ata block covered for example Linearity Temp Comp temperature compensation This indicates a failure with your E Series Power Sensor Refer to your power sensor manual for details on returning it for repair Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 310 System error Sensors connected to both front and rear inputs You cannot connect two power sensors to the one channel input In this instance the power meter detects power sensors connected to both it s front and rear channel inputs 351 Configuration memory lost storage fault Refer to Memory Erase Secure Erase on page 91 to perform secure erase 321 Out of memory The power meter required more memory than was available to run an internal operation 330 Self test Failed The 330 Self test Failed errors indicate that you have a problem with your power meter Refer to Contacting Agilent Technologies on page 208 for details of what to do with your faulty power meter 330 Self test Failed Measurement Channel Fault 330 Self test Failed Measurement Channel A Fault 330 Self test Failed Measurement Channel B Fault 330 Self test Failed Calibrator Fault Refer to Calibrator on page 194 if you require a description of the calibrator test 330 Self test Failed ROM Check Failed 330 Self test Failed RAM Check Failed 350
80. available The battery pack is available as an orderable option Running Under Battery Power A Running under battery power pop up message will be displayed when e the power meter is powered under battery power or e if the AC power is lost while the power meter is still connected to an AC source applicable for power meters with battery option Press Continue to start using the meter RMT A CF 100 00 49 10 Running under battery power 1of1 Figure 2 61 Running under battery power pop up There is a battery indicator on the display screen see Figure 2 62 when the power meter is running under battery power The battery level is indicated by the darker blue box inside the battery indicator 96 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 san E9028 Dame eee ears 4 9 1 4 Channel B No Sensor dBm C 80 0MHz ggs 62 12 C Battery indicator Figure 2 62 Battery indicator Battery Menu For power meters with battery option to access the battery menu 1 Press System 1of2 and select Service 2 In the Service menu press 1 of2 and select Battery RMT A CF 100 00 A904 57 1 Sup ooop 2of2 gt Figure 2 63 Battery menu Service N1913 1914A EPM Series Power Meters User s Guide 97 2 98 General Power Meter Functions Battery Status Display The meter s system will stop charging the battery once the bat
81. c Compatibility This product complies with the essential requirements of the following applicable European EC Directives and carries the CE marking accordingly to Low Voltage Directive 2006 95 EC and EMC Directive 2004 108 EC EMC test have conforms to the IEC61326 1 2005 EN61326 1 2006 and CISPR11 2003 EN55011 2007 Group 1 Class A In order to preserve the EMC performance of the product any cable which becomes worn or damaged must be replaced with the same type and specification The product also meets the following EMC standards e IEC 61326 1 2005 EN61326 1 2006 e CISPR11 2003 EN55011 2007 Group 1 Class A e Canada ICES NMB 001 Issue 4 June 2006 e Australia New Zealand AS NZS CISPR 11 2004 Product Safety This product conforms to the requirements of the following safety standards e IEC 61010 1 2010 EN 61010 1 2010 8rd Edition e Canada CAN CSA C22 2 No 61010 1 12 e USA ANSI UL 61010 1 8rd Edition Low Voltage Directive This product conforms to the requirements of European Council Directive 2006 95 EC Agilent N1913 1914A EPM Series Power Meters User s Guide 237 10 Specifications and Characteristics THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK 238 Agilent N1913 1914A EPM Series Power Meters User s Guide www agilent com Contact us To obtain service warranty or technical support assistance contact us at the following phone numbers United States tel 800 829 4444 fax 8
82. can be disabled and re enabled by checking the Rec o p setting field The highest power you are going to measure is used to determine the value which you should set for the Recorder Output maximum setting For example if you are measuring a power less than 1 mW and greater than 100 mW then set the recorder maximum value to 1 mW Table 2 4 Ranges of recorder output setting Log 50 40 30 20 10 0 Lin 100 W 10W 1W 100 mW 10 mw 1mW Log 10 20 30 40 50 60 Lin 100 mW 10 mW 1 mW 100 nW 10 nW 1 nw N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Saving and Recalling Power Meter States To reduce repeated setup sequences you can save a maximum of ten power meter states in the non volatile memory The save recall functions are part of the Sys Inputs menu accessed by a NC A pressing the System key To save a measurement setup System System 1 Press cau Save Recall to display the Save Recall screen as shown in Figure 2 37 Save Recall Reg Hame Status 4 Available Save 2 State2 Available 3 State3 Available 4 State4 Available Stated Available 6 State6 Available 7 State7 Available Edit 8 States Available Lote 9 Stated Available 10 State10 Available Done i 1of1 Figure 2 37 Save Recall screen 2 Using the O and U keys select an available name from the displayed list To change the name of a register See
83. can normally be found above the calibration factors table on the power sensor body 10 To change the settings use the L and keys to highlight the Cal Fac value field and press co to display the Cal Factor pop up Use the numeric keypad to enter the required value in the Cal Factor pop up window Figure 6 6 Calibration factor pop up window N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 11 Press to complete the entry 12 Connect the power sensor to the signal to be measured 13 The corrected measurement result is displayed RMT A CF 96 55 Semon ns a a Calibration factor 3 7 0 Acq Free run 3 d B M channeisB lh Sensor A 37 02dBm v 70 000dBm aad Figure 6 7 Calibration factor displayed Example To make a measurement on channel A with a power sensor which has a reference calibration factor of 99 8 and a calibration factor of 97 6 at the measurement frequency 1 Disconnect the power sensor from any signal source 2 Press ou REF CFs and the channel REF CF softkey 3 Use the numeric keypad to enter 99 8 in the Ref Cal Factor pop up window 4 Press to complete the entry 5 Press ca and the channel Zero softkey The Zeroing pop up is displayed N1913 1914A EPM Series Power Meters User s Guide 157 6 158 Using N8480 Series Power Sensors 6 Connect the power sensor to the POWER REF output 7 Press e and the channel
84. ce calibration factor of 99 8 and a calibration factor of 97 6 at the measurement frequency 1 Disconnect the power sensor from any signal source Press ea J REF CFs and the channel REF CF softkey Use the numeric keypad to enter 99 8 in the Ref Cal Factor pop up window Press to complete the entry Press eu and the channel Zero softkey The Zeroing pop up is displayed Connect the power sensor to the POWER REF output Press ca and the channel Cal softkey to start the calibration routine The Calibrating pop up is then displayed is Press Channe Offset The value is displayed on the Cal Fac field u Use the L and U keys to highlight the Cal Fac value field and press FTN to display the Cal Factor pop up Use the numeric keypad to enter 97 6 in the Cal Factor pop up window 10 Press to complete the entry 11 Connect the power sensor to the signal to be measured 12 The corrected measurement result is displayed When no sensor tables are selected and Single Numeric display mode is chosen the calibration factor used for the measurement is displayed in the upper window as shown in Figure 5 5 N1913 1914A EPM Series Power Meters User s Guide 135 5 Using 8480 Series Power Sensors Sensor Calibration Tables This section describes how to use sensor calibration tables Sensor calibration tables store the measurement calibration factors for a power sensor model or for a specific power sensor
85. ce menu press 1of2 and select Display Press Blank Screen RMT A CF 100 00 60 0 r 49 02 48m A Ho Sensor ChB A Ho Sensor ChC A No Sensor ChD A 1of1 Figure 2 44 Blank screen N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Secure Blank The secure blank feature is the next level of security to the blank screen feature The data s confidentiality can be secured with the password protection feature To restore the display you are required to enter the correct password ie Display gamers 49 02 4am eae A Ho Sensor ChB A No Sensor ChC A No Sensor ChD 10f1 Figure 2 45 Secure Blank feature To access the secure blank feature feo 1 Press System lof2 and select Service 2 In the Service menu press 1 of2 and select Display 3 Press Secure Blank The Enter 6 digit Password pop up is displayed You are to enter a 6 digit password upon activating the secure blank feature see Figure 2 46 N1913 1914A EPM Series Power Meters User s Guide 85 2 General Power Meter Functions Bald Cancel 49 04 dam cw AN Ho Sensor ChB A CF 100 00 50 0MHz EER 1of1 Figure 2 46 Enter 6 digit Password pop up 4 The entered password will be displayed see Figure 2 47 Press Enter 5 A warning message pop up will be displayed if the entered password is not 6 digits see Figure 2 48 This warning will appear for two seconds before the Enter 6 digit Pas
86. cedure 1 Zero and calibrate the power meter sensor combination 2 Ensure the power sensor is disconnected from any signal source 3 Press ca displayed 4 Connect the power sensor to the POWER REF output and the channel Zero softkey The Zeroing pop up is 5 Press o and the channel Cal softkey to start the calibration routine The Calibrating pop up is then displayed You can reduce the steps required to carry out the zero and calibration procedure as follows 1 Connect the power sensor to the POWER REF output 2 Press Cal and Zero r Cal For dual channel meters press nae Se Zero Cal Zero CalA or Zero CalB as required Now set the frequency of the signal you want to measure The power meter automatically selects the appropriate calibration factor fi N 6 Press Channel On dual channel meters select the required channel 7 Use the L and keys to highlight the Frequency value field and press to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window N1913 1914A EPM Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 Figure 3 4 Frequency pop up 8 Confirm your choice by pressing MHz or GHz 9 Press R Ese key to close the Channel Setup screen 10 Proceed to make the measurement 11 Reconnect any required attenuators or adaptors and connect the power sensor to the signal to be measured The c
87. clicking Turn On Front Panel Identification Indicator on the Welcome Page Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 When the front panel identification indicator is turned on a blinking IDENTIFY message is displayed on the screen of the front panel See Figure 1 6 The IDENTIFY message will blink to identify the instrument until you click Turn Off Front Panel Identification Indicator LCL Channel A Ho Sensor A Ho Sensor ChA IDENTIFY message to blink Channel B when the front panel l Ho Sensor identification indicator is turned on Channel D Ho Sensor ChD Ho Sensor Figure 1 6 Message to identify the instrument When the instrument is configured to LAN the Lan Status on Remote Interfaces screen will show the LAN error condition and status of the LAN configuration connection There are six types of Lan Status messages that may occur See Table 1 1 See also Figure 1 7 for the example of Lan Status message Table 1 1 Type of Lan Status message Type of message Description Lan No Fault Avalid IP address is successfully obtained using selected Status Initialized LAN configuration and the network state is initialized Lan No Fault Avalid IP address is successfully obtained using selected Status Running LAN configuration while network is running IP conflict occurs or Lan Fault IP address failed to be obtained using selected LAN Status Initializa
88. d by the device but was ignored because the power meter was not in the wait for trigger state Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 213 Init ignored Indicates that a request for a measurement initiation was ignored as the power meter was already initiated For example INIT CONT ON INIT 214 Trigger deadlock TRIG SOUR was set to HOLD or BUS and a READ or MEASure was attempted expecting TRIG SOUR to be set to IMMediate 220 Parameter error Frequency list must be in ascending order Indicates that the frequencies entered using the MEMory TABLe FREQuency command are not in ascending order 221 Settings conflict This message occurs under a variety of conflicting conditions The following list gives a few examples of where this error may occur If the READ parameters do not match the current settings If you are in fast mode and attempting to switch on for example averaging duty cycle or limits Trying to clear a sensor calibration table when none is selected 222 Data out of range A numeric parameter value is outside the valid range for the command For example SENS FREQ 2 kHZ 224 Illegal parameter value A discrete parameter was received which was not a valid choice for the command You may have used an invalid parameter choice For example TRIG SOUR EXT 226 Lists not same length This occurs when SENSe CO
89. de 79 2 80 General Power Meter Functions Calibration Procedure Using E Series Power Sensors and N8480 Series Power Sensors excluding Option CFT The following procedure describes how you calibrate the power meter with an E Series power sensor or N8480 Series power sensor excluding Option CFT Since the power meter automatically downloads the E Series power sensor or N8480 Series power sensor excluding Option CFT s calibration table there is no requirement to enter the reference calibration factor The power meter identifies that an E Series power sensor or N8480 Series power sensor excluding Option CFT is connected and will not allow you to select certain softkeys The text on these softkeys appears grayed out To calibrate 1 Press cat 2 Connect the power sensor to the POWER REF output 3 Press the Cal softkey to start the calibration routine The Calibrating pop up is then displayed the power meter automatically turns on the POWER REF output N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Calibration Procedure Using 8480 Series Power Sensors and N8480 Series Power Sensors with Option CFT The following procedure describes how you calibrate the power meter with the 8480 Series power sensors and N8480 Series power sensors with Option CFT V8486A W8486A and E8486A 100 sensors For most 8480 Series sensors the correct A type or D type linearity correction table
90. dent offset tables are currently selected The Offset Tables screen is shown in Figure 2 8 gt You can also view which FDO table is being used by pressing the gt Offsets and use the O and U display the table Procedure Select an offset table as follows 1 Press either gS ff System i a sretem Tables Freq Dep Offset te a A iCh 1 fr Ji b Channel Offsets and use the and Y keys to highlight the FDO Table setting field and press Offset This Tbl Hame State Pts A off 1 BE B CUSTOM_B off 0 Table C CUSTOM_C off 0 D cUSTOM_D off 0 A Table E CUSTOM_E off 0 Ei On F CUSTOM F off 0 G CUSTOM_G off 0 B Table H CUSTOM_H off 0 Ei On 1 CUSTOM off 0 J CUSTOM_J off 0 1of1 Figure 2 8 Frequency dependent offset tables display keys to highlight the FDO Table setting field and press to to display the table 42 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 2 Use the L and U keys to highlight one of the 10 table titles and press Table A Table or B Table for dual channel to highlight On When no data is contained in the highlighted table the Table key is disabled grayed out Prev 3 Press C to complete the selection of the offset table Pr wa X 4 Press Ese Ese y again to display the measurement screen Figure 2 9 shows which offset table is selected a Channel A Sns 848xA Ofs 0dB Acq Free run
91. diting the table press Done to save the table N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 If you measure a signal with a frequency outside the frequency range defined in the frequency dependent offset table the power meter uses the highest or lowest frequency point in the frequency dependent offset table to calculate the offset Selectable Frequency Dependent Offset Unit dB or The offset in dB range is from 100 dB to 100 dB The equivalent range in is from 0 0000000001 to 10000000000 Once the offset unit is selected it will be applied to all the offsets in the selected table and also to the remaining nine tables To change the offset unit to dB press lof2 Offset Unit and dB RMT Hame KELI Freq 1 000MHz 2 000MHz 3 000MHz 5 000MHz 7 000MHz 10 000MHz 12 000MHz 15 000MHz Offset 0 00 dB 0 00 dB 1 25 dB 2 37 dB 0 00 dB 3 37 dB 8 24 dB 0 00 dB Offset Unit 1of1 To change the offset unit to press Lof2 Offset Unit and RMT Hame KEKE Freq Offset 1 000MHz 100 00000000 2 000MHz 100 00000000 3 000MHz 75 00000000 000MHz 8 00000000 7 000MHz 100 00000000 10 000MHz 46 00000000 12 000MHz 15 00000000 15 000MHz 100 00000000 N1913 1914A EPM Series Power Meters User s Guide Offset Unit 1of1 47 2 48 General Power Meter Functions If the selected offset unit is the display of the offs
92. dress 4 Select the Use IP Address option and type the IP address Select the Use socket connection 5 Click Test Connection to test if the instrument is present Click OK You will then return to the Agilent Connection Expert window see Figure 1 13 Your meter is successfully connected via socket connection Agilent N1913 1914A EPM Series Power Meters User s Guide 27 1 Introduction Connect to an instrument by using an address or hostname you already know This has the advantage of being able to connect devices that are not auto discovered Figure 1 12 Add LAN Instruments window File Edit View 1 0 Configuration Tools Help ReheshAl WY Undo D Properties Wf Interactive BR Add instrument W3 Add Interface XK Delete abides 5 S AGMYINLENG GF COMI ASRL1 SF come ASRL4 EY COM7 ASRL7 we EF coms ASRL8 io LAN TCPIPO SME N1914A TCPIPO 141 183 237 33 5025 a usso j fa l Agilent VISA The primary VISA library Figure 1 13 N1914A meter connected via socket connection 28 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Programming Language Selection Option 200 The programming language selection is available as an orderable option For N1913A you can use SCPI HP 436A or HP 437B programming language to program the power meter from the remote interface For N1914A you can use either SCPI or HP 438A programming language to progr
93. e form of a QR code The softkey is as shown in the figure below LCL A CF 100 00 0 0MHz 31 SOn AN No Sensor ChB _ 3of3 gt Figure 8 10 Reference manual softkey Service When you press the softkey a screen containing a QR code appears Press any key to Exit els m Sean to view documentation from your mobile device Figure 8 11 QR code screen To exit this screen you may use either one of the following steps 1 Press any front panel key 2 Place the N1913 1914A EPM Series power meters in remote RMT mode 190 N1913A 1914A EPM Series Power Meters User s Guide This chapter describes the built in tests error messages and general maintenance Agilent N1913A 1914A EPM Series Power Meters User s Guide 9 Maintenance Self Test 192 Error Messages 196 Operator Maintenance 207 Contacting Agilent Technologies 208 Erasing Memory Data 211 Returning Your Power Meter for Service 212 Agilent Sales and Service Offices 214 ee Agilent Technologies 191 9 Maintenance Self Test The power meter s troubleshooting mode self test can accessed via the front panel or remotely The front panel softkey menu allows you to run individual tests whereas the remote command runs a complete series of tests as listed in Remote Testing on page 194 Front Panel Selection of Self Tests 192 ge g Press System eae 2 Service Self Test to access the Self Test menu that
94. e a la norme NMB 001 du Canada indicates that you must not discard this electrical or electronic product in domestic household waste C US The CSA mark is a registered trademark of the Canadian Standards Association 40 This symbol indicates the time period during which no hazardous or toxic substance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product Declaration of Conformity DoC The Declaration of Conformity DoC for this instrument is available on the Agilent Web site You can search the DoC by its product model or description at the Web address below http regulations corporate agilent com DoC search htm If you are unable to search for the respective DoC please contact your local Agilent representative xi In This Guide xii Introduction This chapter introduces you to the front panel display and instrument Web browser of the N1913 1914A EPM Series power meters General Power Meter Functions This chapter describes in detail the general operation of the N1913 1914A EPM Series power meters Using E9300 E Series Power Sensors This chapter describes how to use your E9300 E Series power sensors with N1913 1914A EPM Series power meters Using E4410 E Series Power Sensors This chapter describes how to use your E4410 E Series power sensors with N1913 1914A EPM Series power meters Using 8480 Series Po
95. e any additional tables However you can enter values into the 10 existing tables Each frequency dependent offset table can contain a maximum of 80 frequency points To view the frequency dependent offset tables currently stored in the power meter press __ Tables Freq Dep Offset The Frequency Dependent Offset Tables screen is displayed as shown in Figure 2 8 Editing frequency dependent offset tables requires the following steps 1 Identify and select the table you want to edit 2 Rename the table 3 Enter the frequency and offset pairs 4 Save the table Procedure First select the table you want to edit as follows A frequency in the range of 0 001 MHz to 1000 0 GHz can be entered A calibration factor in the range of 0 0000000001 to 10000000000 can be entered 1 Press System Tables Freq Dep Offset to display the Offset Tbls screen 2 Choose the table you want to edit using the A and g keys Press Edit Table to display the Edit Offset screen as shown in Figure 2 10 44 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Edit Offset Name CUSTOM_A Freq Offset ade ITT ATS ry 55 00000000 Insert Delete well 10f2 gt Figure 2 10 Edit Offset display with data added keys Press Change and 3 Highlight the table title using the use the O and V keys to select and change the characters in Jy Le LS the Table Name pop
96. e clock circuitry on the motherboard when the power meter is powered off The real time clock is used to provide the timestamp needed for N8480 Series power sensors aging sense data During RTC battery test the RTC battery power level is determined by converting the ADC value of the RTC battery power level read from the FPGA to voltage level If the battery power level is less than a pre specified threshold threshold to be defined later the test will fail An error will be logged in the error list if the test fails Channel CW Path A brief test on CW meter linearity performance Ensure that all power sensors have been disconnected from the meter before performing self test Agilent N1913A 1914A EPM Series Power Meters User s Guide 195 9 Maintenance Error Messages Introduction This section contains information about error messages It explains how to read the power meter s error queue and lists all error messages and their probable causes When there is a hardware related problem for example a power sensor overload the error message is displayed on the status line at the top of the display In addition the errors are also written to the error queue If there are any errors in the error queue the front panel error indicator is displayed as shown in Figure 9 2 Other errors can also be generated when the power meter is being operated over the remote interface These errors also display the error indicator and are w
97. e command will not be accepted or return a result unless the remote interface is functioning correctly Refer to Test Descriptions on page 194 if you require a description of each individual test When the TST command is executed the screen is cleared As each test takes place the name of the test is listed on the screen While a test is running the message Testing appears beside the name of the test As each stage of the test is completed the message Testing is replaced by either the message Passed or Failed Test Descriptions This section specifies what is actually checked by each of the tests Some of the tests may only be applicable to one method of invocation for example from the front panel If this is the case it is specified in the test description Most of the tests have an associated error message which is added to the error queue if the test fails The exception to this is the bitmap display test Refer to Error Messages on page 196 for more details Test Point Voltages An array of test on various DC voltages inside power meter Calibrator The reference calibrator is turned on indicated by the POWER REF LED Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 and measured internally A pass or fail result is returned Fan This test confirms that the internal cooling fan is operating Real Time Clock RTC Battery The RTC battery provides power for the real tim
98. e the attenuator when performing external zeroing Procedure 1 Zero the power meter power sensor combination 2 Ensure the power sensor is disconnected from any signal source 3 Press Cal and the channel Zero softkey Select the required channel N1913A 1914A EPM Series Power Meters User s Guide Using U2000 Series USB Power Sensors 7 Now set the frequency of the signal you want to measure The power meter automatically selects the appropriate calibration factor SI 4 Press On dual channel meters select the required channel 5 Use the L and keys to highlight the Frequency value field and press to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window Figure 7 3 Frequency pop up 6 Confirm your choice by pressing MHz or GHz 7 Press ee key to close the Channel Setup screen 8 Proceed to make the measurement Reconnect any required attenuators or adaptors and connect the power sensor to the signal to be measured The corrected measurement result is displayed N1913A 1914A EPM Series Power Meters User s Guide User s Guide 173 7 _ Using U2000 Series USB Power Sensors Electromagnetic Compatibility EMC Measurements The low frequency range of the U2004A make it the ideal choice for making EMC measurements to CISPR Comite International Special Perturbations Radioelectriques requirements and electromagnetic interference EMI
99. eading with no power applied to the power sensor During zeroing which takes approximately 10 seconds the wait symbol is displayed i Please Wait Figure 2 41 Zeroing pop up When to Zero Zeroing of the power meter is recommended e When a 5 C change in temperature occurs e Every 24 hours e Prior to measuring low level signals For example 10 dB above the lowest specified power for your power sensor To zero the power meter e Press cai and the channel Zo softkey e The Zeroing pop up is displayed On dual channel meters you can zero each channel independently or both channels sequentially by pressing the Zero softkey choosing Zero A Zero B or Zero Both N1913 1914A EPM Series Power Meters User s Guide 71 2 General Power Meter Functions Zero Cal Lockout The Zero Cal Lockout facility provides a mean of ensuring that a measurement cannot be taken until the connected sensor has been zeroed and calibrated If the Zero Cal Lockout facility is enabled and a sensor is connected which have not been zeroed and calibrated then the display window for the sensor will display the message Please Zero and Cal Zero Cal A No Sensor ChA A No Sensor ChB SSS 2o0f3 gt Figure 2 42 Please zero and calibrate window When you zero the sensor the message changes to Please Cal If you calibrate the sensor before zeroing it the message changes to Please Zero Dual channel meters display channel specific messages when
100. ease zero Channel B When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel B has not been zeroed then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message 230 Data corrupt or stale Please calibrate Channel A When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel B has not been calibrated then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message 230 Data corrupt or stale Please calibrate Channel B When CAL 1 2 RCAL is set to ON and the sensor currently connected to Channel B has not been calibrated then any command which would normally return a measurement result for example FETC READ or MEAS will generate this error message Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 231 Data questionable CAL ERROR Power meter calibration failed The most likely cause is attempting to calibrate without applying a 1 mW power to the power sensor 231 Data questionable CAL ERROR ChA Power meter calibration failed on Channel A The most likely cause is attempting to calibrate without applying a 1 mW power to the power sensor 231 Data questionable CAL ERROR ChB Power meter calibration failed on Channel B The most likely cause is attempting to calibrate without a
101. easurement Procedure First select and enter the reference calibration factor for the desired sensor as follows 1 Ensure the power sensor is disconnected from any signal source 2 Refer to the connection requirements in Table 5 1 and ensure the sensor is ready for connection to the Power Reference 3 oa the current reference calibration factor setting by pressing ca lof2 and REF CFs The value is displayed under the channel Ref CF softkey Does this setting match the value for the sensor The power sensor reference calibration factor can normally be found above the calibration factors table on the power sensor body 4 To change the settings press the channel REFCF The reference calibration factor pop up window is displayed as shown in Figure 5 3 Use the numeric keypad to enter the required value in the Ref Cal Factor pop up menu 132 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Figure 5 3 Reference Calibration Factor pop up window 5 Press to complete the entry Now zero and calibrate the power meter sensor combination as follows 6 Press o and the channel Zero softkey The Zeroing pop up is displayed 7 Connect the power sensor to the POWER REF output 8 Press ca and the channel Cal softkey to start the calibration routine The Calibrating pop up is then displayed You can reduce the steps required to carry out the zero and calibration procedure as follows
102. edit as follows CON 1 Press System Tables Sensor Cal Tables to display the Sensor Tbls screen Sensor Tbls Tbi Hame State Pts 0 A 2 Eis 1 8481A off 19 Table 2 8482A off 12 3 8483A off 10 A Table 4 8481D off 21 off E 5 8485A off 22 rR 6 R8486A off 17 tee 7 O8486A off 19 Ei On 8 R8486D off 9 8487A off Figure 6 11 Sensor Tbls screen 2 Choose the table you want to edit using the O and Y keys Press Edit Table to display the Edit Cal screen as shown in Figure 6 12 164 N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Edit Cal Hame Ref CF 90 0 Freq Cal Fac 100 000MHz 99 7 2 000GHz 98 0 3 000GHz 97 7 4 000GHz 97 4 000GHz 97 0 Delete 6 000GHz 96 9 7 000GHz 96 4 g 000GHz 96 0 Done Change Insert nn E 1of1 Figure 6 12 Edit Cal display 3 Highlight the table title using the LJ ana U keys Press Change and use the LJ ana V keys to select and change the characters in the Table Name pop up to create the name you want to use Cancel Hame H8481A Ref CF 90 0 Freq Cal Fac 100 000MHz 2 000GHz 98 0 a a 1of1 Figure 6 13 Edit table title pop up e Pressing Insert Char adds a new character to the right of the selected character e Pressing Delete Char removes the selected character 4 Press Enter to complete the entry N1913 1914A EPM Series Power Meters User s Guide 165 6 166 Using N8480 Se
103. en zeroing is performed with the sensor input disconnected from the POWER REF Table 10 1 Zero set specifications Power sensor Zero set laasia ON EYS 8481B2 50 mW 8481D 20 pW 8481H 5 mW 8482A 50 nW 8482B2 50 mW 8482H 5 mW 8483A 50 nW 8485A 50 nW 8485D 20 pW R8486A2 50 nW R8486D2 30 pW 08486A 50 nW Q8486D 30 pW V8486A2 200 nW ws486A2 200 nW 8487A2 50 nW 8487D2 20 pW E4412A 50 pw E4413A 50 pw E9300A 500 pw E9301A 500 pw E9304A 500 pw E9300B 500 nW E9301B 500 nW E9300H 5 nW E9301H 5 nW N8481A exclude Option CFT 25 nW Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics Power sensor Zero set N8482A exclude Option CFT 25nW N8485A exclude Option CFT 25 nW N8486A R exclude Option CFT 25 nW N8486A Q exclude Option CFT 25 nW N8487A exclude Option CFT 25 nW N8488A exclude Option CFT 25 nW N8481B exclude Option CFT 25 uW N8482B exclude Option CFT 25 uW N8481H exclude Option CFT 2 5 pW N8482H exclude Option CFT 2 5 yW N8481A with Option CFT 63 nW N8482A with Option CFT 63 nW N8485A with Option CFT 63 nW N8486A R with Option CFT 63 nW N8486A Q with Option CFT 63 nW N8487A with Option CFT 63 nW N8481B with Option CFT 63 pW
104. ensor excluding Option CFT default channel setup 150 Figure 6 3 N8480 Series sensor with Option CFT default channel setup 150 Figure 6 4 Frequency pop up 153 Figure 6 5 Reference calibration factor pop up window 155 Figure 6 6 Calibration factor pop up window 156 xxi xxii Figure 6 7 Calibration factor displayed 157 Figure 6 8 Sensor table selected 160 Figure 6 9 Frequency dependent offset indicator 161 Figure 6 10 Frequency calibration table display 162 Figure 6 11 Sensor Tbls screen 164 Figure 6 12 Edit Cal display 165 Figure 6 13 Edit table title pop up 165 Figure 7 1 U2000 Series auto averaging settings 170 Figure 7 2 U2000 Series USB power sensor default channel setup 171 Figure 7 3 Frequency pop up 173 Figure 9 1 Self test complete 193 Figure 9 2 Error indicator position 196 Figure 9 3 Replacing the fuses 207 Figure 9 4 Secure erase status pop up 211 Figure 10 1 8480 Series Settling Time with Auto Filter 227 Figure 10 2 E441x Series Settling Time with Auto Filter 228 Figure 10 3 E9300 Series Settling Time with Auto Filter 229 Figure 10 4 N8480 Series Settling Time with Auto Filter 230 Figure 10 5 U2000 Series Settling Time with Auto Filter 231 List of Tables Table 1 1 Type of Lan Status message 19 Table 2 1 Measurement units Single channel meters 32 Table 2 2 Measurement units Dual channel meters 32 Table 2 3 Range of values for window limits 63 Table 2 4 Ranges of recorder output setting 74 Tab
105. ensor is DC coupled DC voltages in excess of the maximum value 5 VDC can damage the sensing diode Setting the Range There are two manual settings LOWER and UPPER The LOWER range uses the more sensitive path and the UPPER range uses the attenuated path in the E9300 E Series power sensors Sensor LOWER range UPPER range E9300 1 4A 60 dBm to 10 dBm 10 dBm to 20 dBm E9300 1B 30 dBm to 20 dBm 20 dBm to 44 dBm E9300 1H 50 dBm to 0 dBm 0 dBm to 30 dBm The default is AUTO In AUTO the range crossover value depends on the sensor model being used E9300 1 4A E9300 1B E9300 1H 10 dBm 0 5 dBm 20 dBm 0 5 dBm 0 dBm 0 5 dBm 116 N1913 1914A EPM Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 Procedure Set the range as follows eS 1 Press Channel On dual channel meters select the required channel Es 2 Use the O and U keys to select the Range setting field 3 Press to display the Range pop up 4 Use the and Y keys to select the required setting 5 Press to complete the entry Measurement Considerations While autoranging is a good starting point it is not ideal for all measurements Signal conditions such as crest factor or duty cycle may cause the power meter to select a range which is not the optimum configuration for your specific measurement needs Signals with average power levels close to the range switch point require you to consider
106. ent results N1913 1914A EPM Series Power Meters User s Guide 67 2 General Power Meter Functions Combined Measurement 68 Figure 2 29 shows a Combined Measurement configuration Channel A and Channel C to be displayed in the upper measurement line of the upper display window For single channel power meter N1913A the Channel field will be disabled as shown in Figure 2 29 Meas Setup Measurement Setup M Upper Window Upper Measurement Selected window Gate fields Meas measurement Gate Meas Combination Select Channel fields j coms e Function field Feed1 Feed2 pee Combination field Measurement fields orr MinPower max Power Limits Rec o p Off sy Figure 2 29 Measurement Setup showing combined configuration 1 Use a a 3 L U to highlight the Combination function field 2 Press to display the Function pop up see Figure 2 28 and use to highlight Combined 3 Press to complete the entry 4 Press Cz a key to complete the setup and display the measurements results 7 344 48 39am Figure 2 30 Measurement example display N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Max Hold Min Hold The max hold min hold setting on the measurement setup window can be set on the front panel or via SCPI Min hold is the minimum of all measurements since the start time The min hold reading will be updated as new minimum reading appears Max hold is the
107. eries power sensors Averaging settings can also be manually configured N1913 1914A EPM Series Power Meters User s Guide sefesany jo saquinyy 5 127 5 128 Using 8480 Series Power Sensors Default Channel Setup Figure 5 2 shows the Channel Setup configured automatically Presetting returns the power meter to this configuration _RMT Channel Channel A Setup Setup Sensor iG on Channel gt auro BB Channel A Meas Avg AUTO EJ Step Detect v leo Aug 4 ic ort Offsets gt A Figure 5 2 8480 Series sensor default channel setup N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 8480 Series Sensors Connection Requirements Table 5 1 8480 Series connection requirements Sensor 8481A 8481H 8482A 8482H Connection Requirements These power sensors connect directly to the POWER REF 8481D 8484A Prior to calibration an Agilent 11708A 30 dB reference attenuator should be connected between the power sensor and the POWER REF Remove this attenuator from the power sensor input before making measurements 8483A This power sensor requires a 75 Q f to 50 Q m N Type adapter 1250 0597 to connect to the POWER REF Remove this adapter before making measurements R8486A 08486A V8486A W8486A E8486A R8486D 08486D These waveguide power sensors have two connectors Use the N Type connector to calibrate the power meter 8481B 8482B Th
108. es 1 Introduction LXI Class C Compliant Power Meter The N1913 1914A EPM Series power meter is a LXI Class C compliant instrument developed using LXI Technology LXI an acronym for LAN eXtension for Instrumentation is an instrument standard for devices that use the Ethernet LAN as their primary communication interface Hence it is an easy to use instrument especially with the usage of an integrated Web browser that provides a convenient way to configure the instrument s functionality Rack Mounting The N1913 1914A can be mounted in a standard 19 inch rack Rack mount kits are available as listed below Support rails are also required for rack mounting These are normally supplied with the rack and are not included with the rack mount options If you are installing an instrument on top of the N1913 1914A ensure that the instrument does not obstruct the ventilation holes at the top of the N1913 1914A If required use a filler panel above the N1913 1914A to ensure adequate space for air circulation Option Description N1913A Option 908 Rack mount kit for one instrument N1913A Option 909 Rack mount kit for two instruments N1914A Option 908 Rack mount kit for one instrument N1914A Option 909 Rack mount kit for two instruments 2 Agilent N1913 1914A EPM Series Power Meters User s Guide Power Meter and Sensor Capability Introduction Your N1913 1914A EPM Series power meter is compatible with the Agilent E9300 E
109. es Tools Help SS g j kk es x1 agtene technologies x amp welcome to Tabbed Browsing dh v peace G Toos Welcome to your Web Enabled N1914A Power Meter Information about this Web Enabled N1914A Power Meter N19144A Power Meter once ooo mY49100115 Agilent N1914A MY49100115 A N19144 00115 Turn On Front Panel Identification 141 183 237 70 Indicator TCPIP 141 183 237 70 inst0 INSTR anced Information about this Web Enabled N1914A Power jeter Use the navigation bar on the left to access your N19144 Power Meter and related information Agilent Technologies Inc 2009 http e n19143 00115 mys agilent comjtop htmist Local intranet 100 Figure 1 5 N1914A EPM Series power meter Web interface Welcome Page You can control the instrument via GPIB LAN and USB connection The connection parameters can be found on the Welcome Page For example SCPI TCPIP socket port 5025 SCPI Telnet port 5024 VISA TCPIP Connect String VISA USB Connect String and GPIB address are shown Click Advanced Information to display more information about the instrument The instrument has an embedded Web server which is listening on port 80 to serve Web pages The Web pages can be browsed using Web browser such as Internet Explorer and Mozilla Firefox Instrument on the network can be physically identified from the blinking message on front panel screen by
110. ese power sensors are configured with an attenuator Prior to calibration this attenuator must be removed Replace the attenuator before making measurements 8485A This power sensor requires an APC 3 5 f to 50 Q m N Type adapter 08485 60005 to connect to the POWER REF Remove this adapter before making measurements 8485D Prior to calibration an Agilent 11708A 30 dB reference attenuator and an APC 3 5 f to 50 Q m N Type adapter 08485 60005 should be connected between the power sensor and the POWER REF Remove this attenuator and adaptor before making measurements N1913 1914A EPM Series Power Meters User s Guide 129 5 Using 8480 Series Power Sensors Sensor Connection Requirements 8487A This sensor requires an APC 2 4 f to 50 Q m N Type adapter 08487 60001 to connect to the POWER REF Remove this adapter before making measurements 8487D Prior to calibration an Agilent 11708A 30 dB reference attenuator and an APC 2 4 f to 50 Q m N Type adapter 08487 60001 should be connected between the power sensor and the POWER REF Remove this adapter before making measurements 130 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Measurement Accuracy Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture and during periodic calibration and the resulting frequency compensa
111. et v 000dB Offset value field FDO Table Off Figure 2 5 Typical channel offset display 5 Press to highlight the Offset value field and press to display the Offset pop up Use the numeric keypad to enter the required value in the Offset pop up window Offset setting field N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 6 Confirm your choice by pressing dB GS Prev 7 Press S Ese key to complete the offset entry If either a channel or a display offset is set the Ofs indicator is displayed RMT Disp Form Disp gt Type Trace Table Feed Ch A The Ofs symbol is not displayed when the associated measurement is displayed in Dual Numeric or Analog format CF 121 88 Ofs 50 0GHz 21 3821p Figure 2 6 Channel offset indicator Offset indicator Setting Display Offsets This gain or loss is applied to the measured power after any channel offsets or mathematical functions have been included Offsets are entered in dB and the range of values is 100 dB to 100 dB A positive value compensates for a loss and a negative value compensates for a gain Procedure Enter a display offset on the currently selected window D TEN g 1 Press Meas to display the Measurement Setup screen 2 Select the window you wish to set the offset value on by pressing the Meas Select key The currently selected window measurement is displayed 3 Use the ana L k
112. et will be in engineering unit only if the percentage value is less than 0 01 or more than 999 The format of the display in engineering unit for an offset greater than 999 will be shown as follows XXX Yyyyyyyyy e z e There is a maximum of three numbers before the decimal point indicated by x e y is optional if there are non zero numbers after the decimal point For example e 123478202 will be displayed as 123 478202 e 6 e 10000 will be displayed as 100 e 2 The format of the display in engineering unit for an offset less than 0 01 will be as follows X YYYYYYYYY Z e The first leading non zero number x is placed before the decimal point e y is optional if there are non zero numbers after the decimal point For example e 0 009876 will be displayed as 9 876 e 3 e 0 0001 will be displayed as le 4 Balt Edit Offset Name Freq Offset Change 1 000MHz 1234 78202000 e 5 2 000MHz 100 00000000 3 000MHz 75 00000000 000MHz 1000 00000000 e 2 7 000MHz 100 00000000 Delete 10 000MHz 1 0000000 e 5 12 000MHz 15 00000000 15 000MHz 100 00000000 Done Insert walt 1of2 gt Figure 2 13 Offset display in engineering unit when the selected unit is N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Setting Measurement Averaging The power meter uses a digital filter to average power readings The number of readings averaged can range from 1 to 1024 This filte
113. eys to highlight the Offset setting field 4 Press to check the Offset setting field N1913 1914A EPM Series Power Meters User s Guide 39 2 40 General Power Meter Functions Meas Setup Measurement Setup Upper Window Upper Measurement Selected window ee ee mn measurement Offset setting field an esti Mt Gaal E eedt c i SINGLE d2 Fi Offset fy Min Power Max Power Result 2 17dBm r Limits Offset value field or ery Figure 2 7 Typical display offset display 5 Press L to highlight the Offset value field and press to display the Display Offset pop up Use the numeric keypad to enter the required value in the Offset pop up window Pr v 3 6 Confirm your choice by pressing dB Press 4 Esc key to complete the offset entry The Ofs indicator is displayed if Display Offset is selected N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Setting Frequency Dependent Offsets Frequency dependent offset tables provide a quick and convenient method of compensating for frequency related changes in the response of your test system Note that when selected frequency dependent offset corrections are applied IN ADDITION to any correction for sensor frequency response The power meter is capable of storing 10 frequency dependent offset tables with a maximum of 80 frequency points each To use frequency dependent offset tables 1 Select the table to be a
114. f the keys on the front panel will turn ON the backlight These features are intended for saving power and longer usage when the meter is running under battery power Press Backlight Timed to enable Timed mode for the display backlight When Timed mode is selected the backlight will turn OFF within 10 minutes after the last keypress Pressing any keys on the front panel will turn the backlight ON again On instrument preset the backlight will be set to ON Battery Status updated once per minute Y Empty Full Approx 296 mins of charge Using battery power Temperature Within rated temperature Doh 1of1 Figure 2 66 Display backlight control N1913 1914A EPM Series Power Meters User s Guide 99 2 General Power Meter Functions CAUTION Battery General Information Please use this information to maintain your power meter battery in optimum condition and prolong its operating life Battery Storage If left unused a fully charged battery discharges over a period of time A fully charged battery removed from a power meter and stored for a maximum of two months retains a low level charge When a battery in this low charge state is fitted to a power meter several hours charging may be required before the power meter indicates the battery is charging Storage temperature limits 20 C to 60 C lt 80 RH In extreme cases of discharge when the battery has been stored in excess of two months recovery may not
115. f you have a problem with your power meter first refer to the section Before calling Agilent Technologies This chapter contains a checklist that will help identify some of the most common problems If you wish to contact Agilent Technologies about any aspect of the power meter from service problems to ordering information refer to Agilent Sales and Service Offices on page 214 If you wish to return the power meter to Agilent Technologies refer to Returning Your Power Meter for Service on page 212 Before calling Agilent Technologies Before calling Agilent Technologies or returning the power meter for service please make the checks listed in Check the Basics on page 209 If you still have a problem please read the warranty printed at the front of this guide If your power meter is covered by a separate maintenance agreement please be familiar with the terms Agilent Technologies offers several maintenance plans to service your power meter after warranty expiration Call your Agilent Technologies Sales and Service Center for full details If the power meter becomes faulty and you wish to return the faulty instrument follow the description on how to return the faulty instrument in the section Contacting Agilent Technologies on page 208 208 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 Check the Basics Problems can be solved by repeating what was being performed when the p
116. ge select Browser Web Control The remote front panel appears LXI Agilent Technologies N1914A EPM Series Power Meter Windows Internet Explorer DER o IE hetpiffa nt9143 00115 mys agilent com m 5 2 live Search ef Fie Edt View Favorites Tools Help wee fea Gx Aglent Technologies X Welcome to Tabbed Browsing aa Ro BD Pe Gtk Email Support Agilent Support Products Agilent EPM Series Power Meter eee aor Agilent Technologies Preset o A No Sensor ChA O4s A No Sensor ChB COMODO BBB OA Derr LLLLLG Pacem Pome Proves ne Por Local intranet 2 Click the front panel keys to control the instrument NOTE Java must be installed on the controlling PC for remote front panel operation Agilent N1913 1914A EPM Series Power Meters User s Guide 21 1 Introduction Editing the Instrument s LAN Settings Once communication path to the instrument has been established the instrument s LAN configuration can be viewed and modified using the Web interface On the Welcome Page click View and Modify Configuration This opens the configuration window shown in Figure 1 8 LXI Agilent Technologies N1914A EPM Series Power Meter Windows Internet Explorer GO Sirvwer9r4e 00115 mys aglet con ch Jef Ele Edit View Favorites Tools Help wr Be 55 Lxi aglent Technologies X Welcome to Tabbed Browsi
117. greement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend U S Government Restricted Rights Soft ware and technical data rights granted to the federal government include only those rights customarily provided to end user cus tomers Agilent provides this customary commercial license in Software and techni cal data pursuant to FAR 12 211 Technical Data and 12 212 Computer Software and for the Department of Defense DFARS 252 227 7015 Technical Data Commercial Items and DFARS 227 7202 3 Rights in Commercial Computer Software or Com puter Software Documentation Safety Notices CAUTION A CAUTION notice denotes a haz ard It calls attention to an operat ing procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated condi tions are fully understood and met Certification General Warranty
118. hannel On dual channel meters select the required channel Sa FN gt 5 Use the and U keys to highlight the Frequency value field and press to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window Figure 6 4 Frequency pop up 6 Confirm your choice by pressing MHz or GHZ 4 rev 7 Press ie key to close the Channel Setup screen Proceed to make the measurement 8 Connect the power sensor to the signal to be measured The corrected measurement result is displayed N1913 1914A EPM Series Power Meters User s Guide 153 6 Using N8480 Series Power Sensors N8480 Series Power Sensors with Option CFT 154 Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture and during periodic calibration The calibration factor table written into EEPROM is not applicable for N8480 Series power sensors with Option CFT Therefore the response of each sensor is measured during manufacture and during periodic calibration and the resulting frequency compensation information is supplied in the form of calibration factors The EPM Series power meters provide two methods of using the calibration factors e inputting the individual calibration factor for a frequency prior to making the measurement or e using sensor calibration tables If you are making most of your measurements at a single frequency
119. he power meter indicates the power dissipated in this load in W or dBm The N8480 sensors excluding Option CFT measure power levels from 35 dBm to 20 dBm 316 nW to 100 mW at frequencies from 10 MHz to 33 GHz and have two independent power measurement path upper and lower range Table 6 1 Power range in the Range setting Sensor Range Setting AUTO Default LOWER UPPER2 Lower Range 35 dBm to 1 dBm 35 dBm to 1 dBm Upper Range 1 dBm to 20 dBm N8481 2 5 7 8A excluding Option CFT 30 dBm to 20 dBm Meanwhile the N8480 sensors with Option CFT only measure power levels from 30 dBm to 20 dBm 1 uW to 100 mW in single range Similar to the E Series power sensors the N8480 Series power sensors are also equipped with EEPROM to store sensor s characteristics such as model number serial number linearity temperature compensation calibration factor and so forth However the calibration factor table stored in EEPROM is not applicable for N8480 Series power sensors with Option CFT and require that you use default calibration tables or manually enter the required correction factors Likewise they cannot be used to make peak or time gated measurements Please refer to the documentation supplied with your Agilent N8480 Series power sensors for specification and calibration information The calibration factor table stored in the EEPROM is not applicable for N8480
120. his adapter before making measurements N1913 1914A EPM Series Power Meters User s Guide Sensor Model General Power Meter Functions 2 Connection Requirements Agilent 8485D Prior to the power meter being zeroed and calibrated an Agilent 11708A 30 dB reference attenuator and an APC 3 5 f to 50 Q m N Type adapter 08485 60005 should be connected between the power sensor and the reference calibrator Remove this attenuator from the power sensor input before making measurements Agilent 8487A This power sensor requires an APC 2 4 f to 50 Q m N Type adapter 08487 60001 to connect to the power meter Remove this attenuator before making measurements Agilent 8487D Prior to the power meter being zeroed and calibrated an Agilent 11708A 30 dB reference attenuator and an APC 2 4 f to 50 Q m N Type adapter 08487 60001 should be connected between the power sensor and the reference calibrator Remove this attenuator from the power sensor input before making measurements N1913 1914A EPM Series Power Meters User s Guide 83 2 General Power Meter Functions Blank Screen 84 The blank screen feature enables you to blank the whole display screen The feature ensures that the meter s display is not shown to casual observers To restore the display press any buttons on the front panel lt r a N To access this feature press System 1of2 and select Service In the Sa Servi
121. ial number can be obtained by e interrogating the power meter over the remote interface using the IDN command Agilent N1913A 1914A EPM Series Power Meters User s Guide 209 9 Maintenance a en y e from the front panel by pressing System lof2 Service Version e from the serial number label The serial number label is attached to the rear of each Agilent Technologies instrument This label has two instrument identification entries The first provides the instruments serial number and the second provides the identification number for each option built into the instrument The serial number is divided into two parts the prefix two letters and the first four numbers and the suffix the last four numbers e The prefix letters indicate the country of manufacture This code is based on the ISO international country code standard and is used to designate the specific country of manufacture for the individual product The same product number could be manufactured in two different countries In this case the individual product serial numbers would reflect different country of manufacture codes The prefix also consists of four numbers This is a code identifying the date of the last major design change e The suffix indicates an alpha numeric code which is used to ensure unique identification of each product throughout Agilent Technologies SERIAL NUMBER PREF IX SUFF IX A A NO SER MY12345678 OPT
122. ilent R8486D 35 GHz 94 4 RCF 97 6 36 GHz 93 7 50 MHz 97 6 37 GHz 94 9 26 5 GHz 97 1 38 GHz 93 5 27 GHz 95 3 39 GHz 93 9 28 GHz 94 2 40 GHz 92 3 29 GHz 94 5 Agilent 8485A 30 GHz 96 6 RCF 100 31 GHz 97 6 50 MHz 100 32 GHz 98 2 GHz 99 5 33 GHz 98 9 4 GHz 98 9 34 GHz 99 5 6 GHz 98 5 34 5 GHz 99 8 GHz 98 3 35 GHz 97 6 10 GHz 98 1 36 GHz 99 11 GHz 97 8 37 GHz 98 2 12 GHz 97 6 38 GHz 97 4 12 4 GHz 97 6 39 GHz 97 6 14 GHz 97 4 40 GHz 100 16 GHz 97 144 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Agilent 8487A Agilent 8487A continued RCF 100 34 5 GHz 93 5 50 MHz 100 35 GHz 93 1 100 MHz 99 9 36 GHz 92 500 MHz 98 6 37 GHz 92 4 1 GHz 99 8 38 GHz 90 9 2 GHz 99 5 39 GHz 91 3 3 GHz 98 9 40 GHz 91 4 4 GHz 98 8 41 GHz 90 6 5 GHz 98 6 42 GHz 89 9 6 GHz 98 5 43 GHz 89 1 7 GHz 98 4 44 GHz 88 1 8 GHz 98 3 45 GHz 86 9 9 GHz 98 3 46 GHz 85 8 10 GHz 98 3 47 GHz 85 4 11 GHz 98 1 48 GHz 83 2 12 GHz 97 9 49 GHz 81 6 13 GHz 98 50 GHz 80 2 14 GHz 98 2 Agilent 08486A 15 GHz 97 7 RCF 100 16 GHz 96 8 50 MHz 100 17 GHz 97 33 5 GHz 91 3 18 GHz 96 3 34 5 GHz 92 19 GHz 95 9 35 GHz 91 7 20 GHz 95 2 36 GHz 91 5 21 GHz 95 6 37 GHz 92 1 22 GHz 95 5 38 GHz 91 7 23 GHz 9
123. ing in the carton e Seal the shipping container securely with strong nylon adhesive tape e Mark the shipping container FRAGILE HANDLE WITH CARE to ensure careful handling e Retain copies of all shipping papers Agilent N1913A 1914A EPM Series Power Meters User s Guide 213 9 Maintenance Agilent Sales and Service Offices In any correspondence or telephone conversations refer to the power meter by its model number and full serial number With this information the Agilent representative can quickly determine whether your unit is still within its warranty period UNITED STATES CANADA EUROPE JAPAN LATIN AMERICA AUSTRALIA and NEW ZEALAND ASIA PACIFIC Agilent Technologies tel 1 800 829 4444 Agilent Technologies Canada Inc Test amp Measurement tel 1 877 894 4414 Agilent Technologies Test amp Measurement European Marketing Organization tel 31 20 547 2000 Agilent Technologies Japan Ltd tel 81 426 56 7832 fax 81 426 56 7840 Agilent Technologies Latin America Region Headquarters USA tel 305 267 4245 fax 305 267 4286 Agilent Technologies Australia Pty Ltd tel 1 800 629 4852 Australia fax 61 3 9272 0749 Australia tel 0 800 738 378 New Zealand fax 64 4 802 6881 New Zealand Agilent Technologies Hong Kong tel 852 3197 7777 fax 852 2506 9284 Or visit Agilent s Web site at http www agilent com find assist 214 Agilent N1913
124. ing results 62 xix XX Figure 2 25 Minimum limit pop up 64 Figure 2 26 Limit failures 65 Figure 2 27 Measurement Setup showing single configuration 66 Figure 2 28 Function pop up 67 Figure 2 29 Measurement Setup showing combined configuration 68 Figure 2 30 Measurement example display 68 Figure 2 31 Max hold min hold measurement is performed on the HOLD block 69 Figure 2 32 Hold pop up 70 Figure 2 33 Min Hold and Max Hold measurement mode indicated in the display 70 Figure 2 34 Measurement mode in full word 71 Figure 2 35 Recorder Minimum pop up 73 Figure 2 36 Recorder Maximum pop up 74 Figure 2 37 Save Recall screen 75 Figure 2 38 Save confirm pop up 75 Figure 2 39 Filename pop up 76 Figure 2 40 Recall pop up 76 Figure 2 41 Zeroing pop up 77 Figure 2 42 Please zero and calibrate window 78 Figure 2 43 Calibration wait pop up 79 Figure 2 45 Secure Blank feature 85 Figure 2 46 Enter 6 digit Password pop up 86 Figure 2 47 6 digit password entered 86 Figure 2 48 Warning message 87 Figure 2 49 Reconfirm password 87 Figure 2 50 Warning message 88 Figure 2 51 Password reconfirmation pop up 88 Figure 2 52 Enter password to restore display 89 Figure 2 53 Backlight intensity control 90 Figure 2 54 Increase or decrease the backlight brightness 90 Figure 2 55 Activate memory erase using combo keys 91 Figure 2 56 Secure Erase 92 Figure 2 57 Confirmation to begin secure erase 92 Figure 2 58 Warning pop up 93 Figure
125. ion If you enter a frequency outside the frequency range defined in the sensor calibration table the power meter uses the highest or lowest frequency point in the sensor calibration table to set the calibration factor When Single Numeric display mode is chosen the frequency you entered and the Channel sensor table identifier is displayed in the upper window Also pressing channel Offset displays the frequency you entered and calibration factor for each channel derived from the selected sensor tables RMT Tables A 50 0Mhz 5 3 6 6 Buen i 36 68dBm Ert 1of1 Sensor Cal gt Tables Freq Dep gt Offset Figure 5 8 Frequency calibration table display 138 N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Editing Generating Sensor Calibration Tables To help achieve the best accuracy in your measurement you can enter the values supplied for the sensors you are using by editing the installed sensor calibration tables or by generating your own custom tables You cannot delete any of the 20 existing calibration tables or create any additional tables However you can edit or delete the content of each table If you need another table you should edit and rename one of the tables Each calibration table can contain a maximum of 80 frequency points To view the calibration tables currently stored in the power meter press A System Tables Sensor C
126. is pressed To isolate the instrument the mains coupler mains input cord should be removed from the power supply Alternating current AC Instrument protected throughout by DOUBLE INSULATION or REINFORCED INSULATION 2 Direct current DC On Supply Both direct and alternating current Off Supply Three phase alternating current Caution risk of electric shock Earth ground TERMINAL Caution hot surface PROTECTIVE CONDUCTOR TERMINAL le Plo a In position of bi stable push control Frame or chassis TERMINAL Out position of bi stable push control ti Hit 2 2 Equipotentiality vii General Safety Information viii This is a Safety Class instrument provided with a protective earthing ground incorporated in the power cord The mains plug shall only be inserted in a socket outlet provided with a protective earth contact Any interruption of the protective conductor inside or outside of the instrument is likely to damage the meter Intentional interruption is prohibited Do not operate the instrument in an explosive atmosphere or in the presence of flammable gasses or fumes Do not use repaired fuses or short circuited fuseholders For continued protection against fire replace the line fuse s only with fuse s of the same voltage and current rating and type Do not perform procedures involving cover or shield removal unless you are qualified t
127. ix MY480 SG480 and above U2001A Serial prefix MY481 SG481 and above U2002A Serial prefix MY482 SG482 and above U2004A Serial prefix MY484 SG484 and above For power sensors with earlier prefixes refer to the U2000 Series Operating and Service Guide Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Settling Time For Agilent 8480 Series power sensors 0 to 99 settled readings over the GPIB Manual filter 10 dB decreasing power step refer to Table 10 6 Auto filter default resolution 10 dB decreasing power step normal and x2 speed modes refer to Figure 10 1 Table 10 6 8480 Series Settling Time Number of Averages 1 2 4 8 16 32 64 128 256 512 1024 Settling Time s 0 15 02 03 05 11 1 9 34 66 13 27 57 Normal Mode Settling Time s 0 15 0 18 0 22 035 0 55 1 1 1 9 35 69 145 33 X2 Mode Normal Mode Max dBm Typical 150ms r Settling Sensor Times pone ae Dynamic 11s 10 dB Range 6 6s 10 dB Min dBm Figure 10 1 8480 Series Settling Time with Auto Filter Agilent N1913 1914A EPM Series Power Meters User s Guide 227 10 Specifications and Characteristics 228 For Agilent E Series power sensors For E441X series and E9300 series power sensors in normal and x2 speed modes manual filter 10 dB decreasing power step refer to Table 10 7 Auto filter defaul
128. l Channel C Setup Setup Sensor FF VG onl Channel rande AUTO aBGD Channel C ze Frequency 50 000MHz etur Meas Avg auto pm as Step Detect v one Vic i E 4 i or Offsets gt Figure 7 2 U2000 Series USB power sensor default channel setup N1913A 1914A EPM Series Power Meters User s Guide User s Guide 171 7 Using U2000 Series USB Power Sensors Measurement Accuracy 172 Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture to determine correction factors With U2000 Series USB power sensors correction factors are stored in a 3 MB Flash memory and are downloaded to the power meter automatically Ensure that the USB power sensor is zeroed Calibration is not required as it is performed internally Using calibration factors enables improved measurement accuracy This section describes making average power measurements using the U2000 Series USB power sensors Making a measurement requires the following steps 1 Zero the power meter power sensor combination 2 Set the frequency for the signal you want to measure 3 Make the measurement Table 7 1 Power sensor connection requirements Sensor Connection Requirements U2000A These power sensors connect directly to the POWER REF when U2000H performing external zeroing U2001A U2001H U2002A U2002H U2004A U2000B These power sensors are configured with an attenuator Do not U2001B remov
129. le 2 5 Power Sensor Connection Requirements 82 Table 3 3 Power sensor connection requirements 107 Table 5 1 8480 Series connection requirements 129 Table 5 2 Installed power sensor models 139 Table 6 1 Power range in the Range setting 148 Table 6 2 N8480 Series connection requirements 151 Table 6 3 Installed power sensor models 163 Table 7 1 Power sensor connection requirements 172 Table 10 1 Zero set specifications 220 Table 10 2 Zero Set Internal and External for U2000 Series 222 Table 10 3 Noise Multiplier 223 Table 10 4 Power sensor specifications 224 Table 10 5 U2000 Series power sensors specifications 226 Table 10 6 8480 Series Settling Time 227 Table 10 7 E441x and E9300 Series Settling Time 228 Table 10 8 N8480 Series Settling Time 230 Table 10 9 U2000 Series power sensors settling time 231 xxiii THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK xxiv Agilent N1913 1914A EPM Series Power Meters User s Guide 1 Introduction LXI Class C Compliant Power Meter 2 Rack Mounting 2 Power Meter and Sensor Capability 3 Conventions Used in this Guide 4 Front Panel Keys and Connections 5 The Display Layout 10 Window Symbols and Pop ups 13 Rear Panel Connections 16 Using the Instrument Web Interface 17 Making Socket Connection 27 Programming Language Selection Option 200 29 This chapter introduces you to the front panel display and instrument Web browser of the N1913 1914A EPM Series power meter ee Agilent Technologi
130. lthough settings in the order of 31 or 32 give acceptable results if a faster measurement is required N1913 1914A EPM Series Power Meters User s Guide Using E9300 E Series Power Sensors 3 Electromagnetic Compatibility EMC Measurements The low frequency range of the E9304A make it the ideal choice for making EMC measurements to CISPR Comite International Special Perturbations Radioelectriques requirements and electromagnetic interference EMI test applications such as the radiated immunity test IEC61000 4 3 DC coupling of the E9304A input allows excellent low frequency coverage However the presence of any dc voltages mixed with the signal has an adverse effect on the accuracy of the power measurement CAUTION The E9304A sensor is DC coupled DC voltages in excess of the maximum value 5 VDC can damage the sensing diode N1913 1914A EPM Series Power Meters User s Guide User s Guide 115 3 Using E9300 E Series Power Sensors Measurement Accuracy and Speed The power meter has no internal ranges The only ranges you can set are those of the E9300 E Series power sensors and other Agilent Technologies E Series power sensors With an E Series E9300 power sensor the range can be set either automatically or manually Use autoranging when you are not sure of the power level you are about to measure CAUTION To prevent damage to your sensor do not exceed the power levels specified in the sensor user s guide The E9304A s
131. maximum of all measurements since the start time The max reading will be updated as new maximum reading appears The max hold min hold reading can be resettable by pressing the ms key CALCulate Block SENSe1 Input from SENSe1 block SENSe2 Input from SENSe2 block N1914A only Max Hold Min Hold Figure 2 31 Max hold min hold measurement is performed on the HOLD block N1913 1914A EPM Series Power Meters User s Guide 69 2 70 General Power Meter Functions To set max hold min hold 1 Press to display the Measurement Setup menu 2 Use the C 2 L VV to highlight the Hold function field ee to display the Hold pop up and use the and to highlight Min or Max see Figure 2 32 Figure 2 32 Hold pop up 4 Press to complete the entry 5 Press i oD key to complete the setup and display the measurements whe results RMT Channel A A CF 100 00 z E9304A Min 50 0MHz Acq Free run Hold 9 0 0 0 Ho Sensor dBm oomi gt Channel C Max a U20004 s 0dB Hold Acq Free run Channel D Ho Sensor 55 92m Figure 2 33 Min Hold and Max Hold measurement mode indicated in the display N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 gy 6 Press O46 to display the measurement window in full screen mode The measurement mode will be indicated in full word in the expanded window see Figure 2 34 _
132. mp Setup Setup Sensor Channel HB gt Range auTo Channel amp Frequency 50 000MHz Meas Avg AUTO Step Detect v ma ort Offsets gt EE Figure 6 2 N8480 Series sensor excluding Option CFT default channel setup _RMT Channel pee Channel A Setup Setup a Sian gt Channel A A Meas Avg AUTO 125 Step Detect V 4 Offsets gt Se Figure 6 3 N8480 Series sensor with Option CFT default channel setup N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors N8480 Series Sensors Connection Requirements Table 6 2 N8480 Series connection requirements Sensor N8481A N8482A N8485A N8487A N8488A Connection Requirements These power sensors connect directly to the POWER REF This power sensor requires an APC 3 5 f to 50 Q m N Type adapter 08485 60005 to connect to the POWER REF Remove this adapter before making measurements This sensor requires an APC 2 4 f to 50 Q m N Type adapter 08487 60001 to connect to the POWER REF Remove this adapter before making measurements 6 N1913 1914A EPM Series Power Meters User s Guide 151 6 Using N8480 Series Power Sensors N8480 Series Power Sensors excluding Option CFT 152 Power sensors have small errors in their response over frequency The response of each sensor is measured during manufacture and during periodic calibration With N8480 Series power sensors excluding Option CFT the res
133. nction In the case where a channel is set up in both the upper and lower window and the resolution settings are different the highest resolution setting is taken to calculate the averaging number These four resolution levels represent e 1 0 1 0 01 0 001 dB respectively if the measurement suffix is dBm or dB e 1 2 3 or 4 significant digits respectively if the measurement suffix is Q or Procedure Set measurement averaging as follows 1 Press On dual channel meters select the required channel The current setting is shown in the Meas Avg field AUTO MAN or OFF on the Channel Setup screen The default is AUTO 2 Use the l and U keys to select the Filter setting field 3 Press and use the O and U to step through the available settings If you have selected AUTO or OFF proceed at step 7 If you have selected MAN proceed as follows 4 Use the key to select the Meas Avg value field 5 Press to display the Meas Avg Count pop up Figure 2 15 Meas Avg Count pop up 6 Use the numeric keys to enter the required value and press Enter 7 Prev 7 Press SFA key to close the Channel Setup screen N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Step Detection To reduce the filter settling time after a significant step in the measured power the filter can be set to re initialize upon detection of a step increase or decrease in the measured power Step detection
134. nd Connections 5 The Display Layout 10 Window Symbols and Pop ups 13 Rear Panel Connections 16 Using the Instrument Web Interface 17 Making Socket Connection 27 Programming Language Selection Option 200 29 2 General Power Meter Functions Setting the Units of Measurement 32 XV Setting the Measurement Frequency 33 Setting the Resolution 34 Making Relative Measurements 35 Setting Offsets 37 Setting Measurement Averaging 49 Step Detection 51 Measuring Pulsed Signals 52 Setting External Trigger for Average Power Measurement 54 Setting Measurement Limits 62 Single Function Measurement 67 Combined Measurement 68 Max Hold Min Hold 69 Recorder Output 72 Saving and Recalling Power Meter States 75 Zeroing and Calibrating the Power Meter 77 Blank Screen 84 Secure Blank 85 Backlight Intensity Control 90 Memory Erase Secure Erase 91 VGA Output Optional 94 Warm Start 95 Battery Information Optional 96 Setting the Cable Short Long 102 3 Using E9300 E Series Power Sensors Introduction 104 Power Meter Configuration 105 Measurement Accuracy 107 Measuring Spread Spectrum and Multitone Signals 110 Measuring TDMA Signals 113 Electromagnetic Compatibility EMC Measurements 115 Measurement Accuracy and Speed 116 4 Using E4410 E Series Power Sensors Introduction 120 xvi Power Meter Configuration 121 Measurement Accuracy 123 5 Using 8480 Series Power Sensors Introduction 126 Power Meter Configuration 127 Me
135. ng combo keys N1913 1914A EPM Series Power Meters User s Guide 91 2 92 General Power Meter Functions Secure Erase oa h 1 Press System 1of2 and select Service In the Service menu select See Secure Erase see Figure 2 56 RMT Service A Ho Sensor Cha Self Test gt A No Sensor ChC Version gt Secure A Ho Sensor ChB Erase A No Sensor ChD 10f2 gt Figure 2 56 Secure Erase 2 A confirmation pop up will be displayed press Confirm to begin secure erase see Figure 2 57 Cancel Confirm No Sensor ChC RMT A P Please Confirm ft 10f1 Figure 2 57 Confirmation to begin secure erase N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 3 A warning pop up will be displayed to inform you that the secure erase is in progress see Figure 2 58 Secure erase in progress Programming flash with all zeros 15 percent complete Figure 2 58 Warning pop up N1913 1914A EPM Series Power Meters User s Guide 93 2 General Power Meter Functions VGA Output Optional 94 The VGA output is used to project the meter s small display to a bigger monitor or screen This VGA output feature is available as an orderable option The VGA output ON OFF selection is provided via the front panel and SCPI The default setting is OFF To access the VGA output selection CN 1 Press 1of2 and select Service o 2
136. ng je Agilent Technologies 9 S AVESTE iy Current Configuration of N1914A Power Meter Modify Configuration Parameter Currently in use 141 183 237 70 255 255 252 0 141 183 236 1 141 183 236 411 141 183 230 30 0 0 0 0 A N1914A 00115 ON ON Agilent N1914A MY49100115 ON 1800 Modify Configuration Figure 1 8 Viewing LAN configuration settings from the Web interface To edit parameters shown click Modify Configuration The Enter Password dialog box appears as shown in Figure 1 9 22 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Enter Password Windows Inte Jog Enter Password Password is currently default agilent LXI Figure 1 9 Password security dialog box Click the Submit accept the default password and the window opens as shown in Figure 1 10 The default password is agilent A LAN reset needs to be performed to ensure that the password is reset to default See LAN reset procedure as below Procedure i sA 1 Press System Remote Interfaces to display the Remote Interfaces screen 2 Press 1 of 2 softkey to display the second page of the Remote I F menu 3 Press LAN Reset softkey to reset the LAN settings to default When LAN Reset softkey is pressed it will also change the GPIB address to default You can change the password from the Configuring you
137. nsor ChD 2of2 gt Figure 2 53 Backlight intensity control Service Press Brightness to increase the backlight s brightness Press Brightness to decrease the backlight s brightness m Backlight A SaR i 49 k 34 dBm Brightness Brightness A No Sensor ChB A No Sensor ChC A Ho Sensor ChD 1of1 Figure 2 54 Increase or decrease the backlight brightness N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Memory Erase Secure Erase The memory erase and secure erase features will erase the battery backed SRAM and flash file system The flash file system includes the power meter states cal factor tables frequency dependant offset tables and the secure blank password stored in the EEPROM Upon completion the meter s contents will be initialized to the default settings These features can only be activated via the front panel The memory erase feature can be invoked when you forget the 6 digit password set during secure blank To perform memory erase secure erase do one of the followings Memory Erase ie 1 Simultaneously press the fourth softkey from the top and the key immediately upon power on see Figure 2 55 2 During memory erase the splash screen will display Clearing Memory When memory erase is complete Clearing Memory done will be displayed 2 Agilent Waea nan Press simultaneously Figure 2 55 Activate memory erase usi
138. nt 8481A Agilent 8481H Agilent 8482A Agilent 8482H Agilent N8481A Agilent N8482A Agilent E4412A Agilent E930xA Agilent E930xH Agilent E9304 H18 Agilent E9304 H19 Connection Requirements These power sensors connect directly to the reference calibrator Agilent 8481D Agilent 8484A Prior to the power meter being calibrated an Agilent 11708A 30 dB reference attenuator should be connected between the power sensor and the reference calibrator Remove this attenuator from the power sensor input before making measurements Agilent 8483A This power sensor requires a 75 Q f to 50 Q m N Type adapter 1250 0597 to connect to the reference calibrator Remove this adapter from the power sensor input before making measurements Agilent R8486A Agilent 08486A Agilent V8486A Agilent W8486A Agilent E8486A Agilent R8486D Agilent 08486D The waveguide power sensors have two connectors The N Type connector is the one which is used to calibrate the power meter Agilent 8481B Agilent 8482B Agilent E930xB These power sensors are configured with an attenuator Prior to the power meter being calibrated this attenuator must be removed The attenuator must be reconnected prior to making measurements Agilent 8485A Agilent N8485A Agilent E4413A Agilent E9300A H24 Agilent E9300A H25 This power sensor requires an APC 3 5 f to 50 Q m N Type adapter 08485 60005 to connect to the reference calibrator Remove t
139. o do so Operating personnel must not remove the meter covers or shields Procedures involving the removal of covers and shields are for use by service trained personnel only Do not service or adjust alone Under certain conditions dangerous voltages may exist even with the instrument switched off To avoid electrical shock service personnel must not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present Do not operate damaged instrument Whenever it is possible that the safety protection features built into this instrument have been impaired either through physical damage excessive moisture or any other reason REMOVE POWER and do not use the instrument until safe operation can be verified by service trained personnel If necessary return the instrument to an Agilent Technologies Sales and Service Office for service and repair to ensure the safety features are maintained Do not substitute parts or modify the instrument Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a Agilent Technologies Sales and Service Office for service and repair to ensure the safety features are maintained Environmental Conditions This instrument is designed for indoor use The table below shows the general environmental requirements for this instrument
140. o spaces are allowed in the name Enter or edit the frequency and cal factor pairs as follows 1 Press Insert to add a new frequency value or press Change to edit Use the numeric keypad to enter the required value in the Frequency pop up window Complete the entry by pressing the GHz MHz keys Enter the new cal factor value or press Change to edit Use the numeric keypad to enter the required value in the Cal Factor pop up window Complete the entry by pressing the key Continue adding or editing values until you have entered all the data you require When you have finished editing the table press Done to save the table Ensure that the frequency points you use cover the frequency range of the signals you want to measure If you measure a signal with a frequency outside the frequency range defined in the sensor calibration table the power meter uses the highest or lowest frequency point in the sensor calibration table to calculate the offset N1913 1914A EPM Series Power Meters User s Guide Using 8480 Series Power Sensors 5 Pre installed Calibration Table Contents The following lists detail the contents of the installed sensor calibration tables DEFAULT Agilent 8483A RCF 100 RCF 94 6 0 1 MHz
141. of jitter Summary Attention must be paid to signals whose average power levels are in the low power path range whilst their peaks are in the high power path range You can achieve best accuracy by selecting the high power path or best speed by selecting the low power path N1913A 1914A EPM Series Power Meters User s Guide User s Guide 177 7 Using U2000 Series USB Power Sensors THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK 178 N1913A 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters n User s Guide e e e e ee 8 7 e Using U8480 Series USB Thermocouple i Sensors Introduction 180 Power Meter Configuration 181 Measurement Accuracy 183 Zeroing 185 Calibrating 187 Zero Cal 189 FDO Table Editing 189 Reference Manual 190 This chapter describes how to use your U8480 Series USB thermocouple sensors with N1913 1914A EPM Series power meters ott Agilent Technologies 179 8 Using U8480 Series USB Power Sensors Introduction 180 The U8480 Series is a USB based standalone thermocouple power sensor and meter The U8480 Series consists of two models U8481A DC to 18 GHz and U8485A DC to 33 GHz The U8480 Series allows direct measurement of average RF or microwave power through the heating effect it has on a terminating load It measures power from 35 dBm to 20 dBm at a DC to 33 GHz frequency range Please refer to the documentation supplied with your U8480 Series USB
142. of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Agilent Technologies Inc assumes no liability for the customer s failure to comply with these requirements A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or loss of life Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met CAUTION A CAUTION notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met Safety Symbols gt The following symbol on the instrument and in the documentation indicates precautions that must be taken to maintain safe operation of the instrument Caution risk of danger The Instruction Documentation Symbol The instrument is marked with this symbol when it is necessary for the user to refer to the instructions in the supplied documentation G This symbol indicates the operating switch for Stand by mode Note this instrument is NOT isolated from the mains when the switch
143. old is set to minimum 14 The information in this field is displayed on two lines and depends on the sensor type sensor calibration table frequency dependent offset table currently selected and the measurement frequency 15 This field displays Dty Cyc if a duty cycle is set 16 This field displays Ofs if an offset is set 17 This field displays Rel if relative mode is on 18 This field indicates the measurement result is beyond the configured upper or lower limit If the measurement is within the limits this field is empty If the measurement result is less than the minimum limit set Undr Lmt is displayed If the measurement result is more than the maximum limit set Over Lmt is displayed 12 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Window Symbols and Pop ups There are several different graphic symbols and pop up windows that can occur on the power meter display These can occur for a variety of reasons for example e An error or warning occurs e You are required to wait while the power meter carries out a procedure e You are required to select an entry from a list e You are required to enter a numeric value There are three different colors used to signify the pop up status e Green used to allow data entry e Orange used to display information e Red used to display an error Warning Symbol Pop up The warning symbol is displayed either in a pop up window or directly in the measuremen
144. on for at least 30 minutes e The power meter and power sensor are within their recommended calibration periods e Used in accordance to the information provided in the Agilent N1913 1914A EPM Series Power Meter s User s Guide Agilent N1913 1914A EPM Series Power Meters User s Guide 217 10 Specifications and Characteristics Power Meter Specifications 218 Frequency Range 9 kHz to 110 GHz power sensor dependant Power Range 70 dBm to 44 dBm 100 pW to 25 W power sensor dependant Power Sensors Compatibility e Agilent 8480 Series power sensors e Agilent E9300 E Series average power sensors e Agilent E4410 E Series average power sensors e Agilent N8480 Series power sensors e Agilent U2000 Series average USB power sensors Single Sensor Dynamic Range e 90 dB maximum Agilent E Series power sensors e 50 dB maximum Agilent 8480 Series power sensors e 55 dB maximum Agilent N8480 Series power sensors e 80 dB maximum Agilent U2000 Series USB power sensors Display Units Absolute Watts W or dBm Relative Percent or dB Display Resolution Selectable resolution of 1 0 0 1 0 01 and 0 001 dB in logarithmic mode or 1 2 3 and 4 significant digits in linear mode Default Resolution 0 01 dB in logarithmic mode or three digits in linear mode Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 Power Sensor Specifications Definitions Zero Set
145. onse The IDN command must be the last query command within a command string 206 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 Operator Maintenance This section describes how to replace the power line fuse and clean the power meter If you need additional information about replacing parts or repairing the power meter refer to the EPM Series Power Meter Service Guide To clean the power meter disconnect its supply power and wipe with a damp cloth only The power line fuse is located within the power meter s fuse holder assembly on the rear panel For all voltages the power meter uses a 250 V T2 5 H 20 mm slow blow fuse with high breaking capacity The power meter also has an internal fuse If you suspect that this fuse needs to be replaced it must be done by trained service personnel Please refer to Returning Your Power Meter for Service on page 212 Replacing the Power Line Fuse 1 Slide the fuse holder assembly from the rear panel as shown in Figure 9 3 2 Install the correct fuses in the respective In line positions as shown in Figure 9 3 The N1913A 1914A requires two fuses 3 Replace the fuse holder assembly in the rear panel In line Fuse Figure 9 3 Replacing the fuses Agilent N1913A 1914A EPM Series Power Meters User s Guide 207 9 Maintenance Contacting Agilent Technologies This section details what to do if you have a problem with your power meter I
146. or in a narrow range of frequencies entering a specific calibration factor is a more effective method Only a minimal amount of data entry is required However if you are making measurements on a wide range of signal frequencies a sensor table is more effective as you only need to enter the frequency of the signal you are measuring The power meter automatically selects and applies the calibration factor from the selected table Frequency Specific Calibration Factors This section shows you how to make a measurement using the calibration factor for the frequency of the signal you want to measure Tip This method is best suited to making several measurements at one frequency as you need only enter a small amount of data Using this method requires the following steps 1 Zero and calibrate the power meter sensor combination 2 Set the calibration factor value for the frequency of the signal you want to measure 3 Proceed to make the measurement N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Procedure 1 Ensure that the power sensor is disconnected from any signal source 2 Refer to the connection requirements in Table 6 2 and ensure that the sensor is ready for connection to the POWER REF 3 a the current reference calibration factor setting by pressing ca J MOFD REFOFS The value is displayed under the channel Ref CF softkey Does this setting match the value for the sensor
147. orrected measurement result is displayed N1913 1914A EPM Series Power Meters User s Guide User s Guide 109 3 Using E9300 E Series Power Sensors Measuring Spread Spectrum and Multitone Signals 110 To achieve high data transfer rates within a given bandwidth many transmission schemes are based around phase and amplitude I and Q modulation These include CDMA W CDMA and digital television The signals are characterized by their appearance on a spectrum analyzer display a high amplitude noise like signal of bandwidths up to 20 MHz An 8 MHz bandwidth digital television signal is shown in Figure 3 5 R 306 00 MHz SPAN 12 00 MHz RES BW 100 kHz VBW 1 MHz SWP 20 0 msec AVG CHANNEL POWER average 10 sweeps 16 3 dBm Figure 3 5 Spread spectrum signal The diode pair attenuator diode pair architecture of the E9300 E Series power sensors is ideally suited to the average power measurement of these signals The sensors have wide dynamic range 80 dB max sensor dependent and are bandwidth independent Some signal modulation formats such as orthogonal frequency division multiplexing OFDM and CDMA have large crest factors The E Series E9300 1 4A power sensors can measure 20 dBm average power even in the presence of 13 dB peaks but the peak pulse duration must be less than 10 microseconds For high power applications such as base station testing the E9300 1B and E9300 1H are recommended N1913 1914A EP
148. ower step not across the switching point 2 When a power step crosses the auto range switch point of the sensor add 25 ms Maximum sensor power within a range Normal x2 Mode Mode U2000 1 2 4A U2000 1 2H U2000 1B A 10 dBm 4 20 dBm 40 dBm 90 ms 82 ms 2 dBm 1 12dBm 4 32 dBm 2 6 S 1 38 l 4dBm 6dBm _ 26 dBm Typical 27s 1 58 Sensor Settling X 10 dBm 0 dBm 20dBm Dynamic 460 ms 450 ms Times l 20 d8m 10dBm oasm Range 2 88 1 68 30 dBm _ 20dBm 0dBm 39s 20s 40 dBm _ 30 dBm 10 dBm 42s 24s 50 dBm 40 dBm 20 dBm Vv A Minimum sensor power within a range Figure 10 5 U2000 Series Settling Time with Auto Filter Agilent N1913 1914A EPM Series Power Meters User s Guide 231 10 Specifications and Characteristics Measurement Characteristics Measurement Speed Over the GPIB three measurement speed modes are available as shown along with the typical maximum measurement speed for each mode e Normal 20 readings second e x2 40 readings second e Fast 400 readings second for Agilent E Series power sensors only Maximum measurement speed is obtained using binary output in free run trigger mode 1 For N1914A if both channels are used in the fast mode the measurement speed will be reduced to 200 readings second for each channel
149. p fields for example the offset values To complete the entry use the softkey Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Connector Function REF 50MHz The power reference is a 1 mW 0 dBm 50 MHz signal available from a 50 Q type N connector It is used for calibrating an 8480 or E Series power sensor and meter system If the meter is configured with Option 109 the connector is fitted to the rear panel The Green LED beside the connector is lit when the calibrator is turned on The sensor input connectors N1914A shown the N1913A has one input If the meter is configured with Option 108 or 109 the connectors are fitted to the rear panel and the front panel connectors are retained The USB Type A port is solely for U2000 Series power sensors usage only If the meter is configured with Option105 one USB Type A port is fitted to the front panel Channel C and another Type A port Channel D to the rear panel If the meter is configured with Option 103 108 or 109 two USB Type A ports are fitted to the rear panel The USB port on the left is Channel C and the port on the right is Channel D Agilent N1913 1914A EPM Series Power Meters User s Guide 9 1 Introduction The Display Layout 10 Figure 1 1 shows the display layout when two windows are configured in dual numeric mode EON Other display formats are available by pressing Display Disp Type 1 i Di
150. p message Should an error occur during calibration the following pop up message will appear LCL ERR A CF A100 00 50 0MHz CAL ERROR ChC Calibrate 10f1 Figure 8 8 Calibration error pop up message Error messages will be logged in the Error Log in System gt Error List N1913A 1914A EPM Series Power Meters User s Guide Using U8480 Series USB Power Sensors 8 Zero Cal The N1913 1914A EPM Series power meters are able to perform Zero Cal for the U8480 USB thermocouple sensor via the front panel and SCPI The Zero Cal softkey will be greyed out if no sensor is connected to that particular channel When the Zero Cal softkey is pressed zeroing and external calibration will be triggered for the U8480 USB thermocouple sensor The calibration type will not be changed The U8480 USB thermocouple sensor should be connected to the reference calibrator before Zero Cal is performed FDO Table Editing When editing FDO table entries the kHz softkey will be enabled when a U8480 USB thermocouple sensor is connected to a N1913 1914A EPM Series power meter The minumum entry for the frequency value is 0 kHz LCL Cancel Hame Freq Offset a 50kHz 100 0 MHz eee kHz sss 50 000 Figure 8 9 FDO table editing N1913A 1914A EPM Series Power Meters User s Guide User s Guide 189 8 Using U8480 Series USB Power Sensors Reference Manual A link to the reference manuals is available under System gt Service in th
151. plicable if the measurement of the selected window is a difference ratio channel C or D measurement Procedure Set the recorder output as follows Ensure you have selected the channel you want to set up OON 1 Press Meas Meas Select to display the Measurement Setup menus 2 Use the L and V keys to highlight the Rec 0 p setting field N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 3 Press to reveal the Recorder option menu 4 Use the L3 and V keys to highlight the option you require e The N1913A has only three options On Auto or Off e The N1914A has five options 1 2 Auto 1 Auto 2 or Off 5 Press 6 Use the L key to highlight the Recorder Minimum value field 7 Press to display the Recorder Minimum pop up 030 000 Figure 2 35 Recorder Minimum pop up 8 Use the numeric keys to enter the power level you want to generate a 1 Vdc output in the Recorder Maximum pop up and press dBm 9 Use the Se key to highlight the Recorder Maximum value field 10 Press to display the Recorder Maximum pop up N1913 1914A EPM Series Power Meters User s Guide 73 2 74 General Power Meter Functions 010 000 Figure 2 36 Recorder Maximum pop up 11 Use the numeric keys to enter the power level you want to generate a 0 Vdc output in the Recorder Minimum pop up and press dBm f Prev X 12 Press Es gt key to close the Measurement Setup screen The recorder output
152. pplied to a channel Refer to Setting Frequency Dependent Offsets on page 41 for further information If you require to edit the table refer to Editing Frequency Dependent Offset Tables on page 44 for further information 2 If an 8480 Series N8480 Series an E Series or an U2000 Series sensor is used zero and calibrate the power sensor The reference calibration factor used during the calibration is automatically set by the power meter from the sensor calibration table if selected 3 Specify the frequency of the signal you want to measure The calibration factor offset is automatically set by the power meter from the sensor calibration table Gif selected and the frequency dependent offset table Refer to Procedure on page 42 for further information 4 Make the measurement Selecting a Frequency Dependent Offset Table Sten You can select a frequency dependent offset table from the system key menu followed by Tables Meter and Freq Dep Offset for Channel A or Channel B For Channel C you can select the frequency dependent offset table from on the key menu followed by Tables Sensor ChC and Freq Dep Offset For Channel D you can select the frequency dependent offset table from Ks the key menu followed by Tables Sensor ChD and Freq Dep Offset N1913 1914A EPM Series Power Meters User s Guide 41 2 General Power Meter Functions The State column indicates if any frequency depen
153. pplying a 1 mW power to the power sensor 231 Data questionable Input Overload The power input to Channel A exceeds the power sensor s maximum range 231 Data questionable Input Overload ChA The power input to Channel A exceeds the power sensor s maximum range 231 Data questionable Input Overload ChB The power input to Channel B exceeds the power sensor s maximum range 231 Data questionable Lower window log error This indicates that a difference measurement in the lower window has given a negative result when the units of measurement were logarithmic 231 Data questionable Upper window log error This indicates that a difference measurement in the upper window has given a negative result when the units of measurement were logarithmic 231 231 Data questionable ZERO ERROR Power meter zeroing failed The most likely cause is attempting to zero when some power signal is being applied to the power sensor Data questionable ZERO ERROR ChA Power meter zeroing failed on Channel A The most likely cause is attempting to zero when some power signal is being applied to the power sensor Agilent N1913A 1914A EPM Series Power Meters User s Guide 203 9 204 Maintenance 231 Data questionable ZERO ERROR ChB Power meter zeroing failed on Channel B The most likely cause is attempting to zero when some power signal is being applied to the power sensor
154. quency in the sensor calibration table the power meter calculates the calibration factor using linear interpolation If you enter a frequency outside the frequency range defined in the sensor calibration table the power meter uses the highest or lowest frequency point in the sensor calibration table to set the calibration factor N1913 1914A EPM Series Power Meters User s Guide 161 6 162 Using N8480 Series Power Sensors When Single Numeric display mode is chosen the frequency you entered and the Chanel ap A f i i a ff sensor table identifier is displayed in the upper window Also pressing aan ONSE displays the frequency you entered and calibration factor for each channel derived from the selected sensor tables RMT A 50 0MHz 0 Sensor Cal gt 46 D Bm i 4 65dBm E Tables Figure 6 10 Frequency calibration table display N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Editing Generating Sensor Calibration Tables Predefined sensor calibration factor table stored in power meter is not applicable for Agilent N8480 Series power sensors with Option CFT Therefore users are required to create a new sensor calibration table for the sensors when a sensor calibration table is needed To help achieve the best accuracy in your measurement you can enter the values supplied for the sensors you are using by editing the installed sensor calibration tables or by gene
155. r N1914A Power Meter window as shown in Figure 1 10 Scroll down the Parameter column until you locate the Change Password parameter Agilent N1913 1914A EPM Series Power Meters User s Guide 23 1 Introduction LXI Agilent Technologies N1914A EPM Series Power Meter Windows Internet Explorer 39 E heepiffa n1914a 00115 mys agilent com Ele Edit wew Favorites Tools Help B8 gt Lxt Agilent Technologies gt Gwelcome to Tabbed Browsing Live Search enabled instrument Agilent Technologies J I HVETE 1 9 efe iV m V 1 irom Agilent Technologies Configuring your N1914A Power Meter Note You must click Save before changes to parameters become effective Parameters marked with an asterisk also require that you click Renew LAN settings before changes take effect Undo Edits _ Save Renew LAN Settings Reboot N1914A Power Meter Factory Defaults me Oor Oon C Oor oon mera Oorr oN Figure 1 10 Changing the instrument LAN interface configuration 24 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Capturing the Screen Image To save the instrument s display from the Web interface 1 On the left of the Welcome Page select Get Image The screen image will be displayed A gi E http yfa n1914a 00115 mys agient comf MA 4 f uve search File Edit vew Favorites Tools Help
156. r is used to reduce noise obtain the desired resolution and to reduce the jitter in the measurement results Increasing the value of the measurement average reduces measurement noise However the measurement time is increased You can manually select the measurement average or you can set the power meter to auto measurement average mode The default is AUTO When the auto measurement average mode is enabled the power meter automatically sets the number of readings averaged together to satisfy the filtering requirements for most power measurements The number of readings averaged together depends on the resolution setting and the power level currently being measured Resolution Setting Minimum sensor power 1 2 3 4 10 dB 1 8 128 128 Mee de Steere Se dee a a EE a See bee ee ee o SE ESE ee z a 10 dB 1 1 16 256 5 D za oml IG e E E E E EEE ee E EE eee E Ee P s 10 dB 1 1 2 32 SN ee a cE 10 dB 1 1 1 16 s Maximum sensor power Figure 2 14 Typical averaged readings Figure 2 14 shows the typical number of averages for each range and resolution when the power meter is in auto filter mode and is set to normal speed mode N1913 1914A EPM Series power meters recognize different sensor types when they are connected and configure suitable averaging automatically N1913 1914A EPM Series Power Meters User s Guide 49 2 50 General Power Meter Functions Resolution is a measurement display function and not a channel fu
157. r more accuracy the measurement is slower More filtering is applied due to the increase in noise susceptibility at the less sensitive area of the high power path Values of 1 to 128 for average power levels less than 10 dBm are used Again refer to E9300 E Series auto averaging settings on page 105 Manually lowering the filter settings speeds up the measurement but can result in an unwanted level of jitter Summary Attention must be paid to signals whose average power levels are in the low power path range whilst their peaks are in the high power path range You can achieve best accuracy by selecting the high power path or best speed by selecting the low power path N1913 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters User s Guide Using E4410 E Series Power Sensors a z Introduction 120 Power Meter Configuration 121 Measurement Accuracy 123 i z a e e0 0ce 4 20 This chapter describes how to use your E4410 E Series power sensors with N1913 1914A EPM Series power meters Agilent Technologies 119 4 Using E4410 E Series Power Sensors Introduction 120 The E4410 E Series power sensors are diode based power sensors They are intended for the measurement of CW microwave power levels in a wide dynamic range from 70 dBm to 20 dBm 100 pW to 100 mW These are high speed power sensors and do not incorporate narrow bandwidth averaging used in average po
158. rating your own custom tables You cannot delete any of the 20 existing calibration tables or create any additional tables However you can edit or delete the content of each table If you need another table you should edit and rename one of the tables Each calibration table can contain a maximum of 80 frequency points To view the calibration tables currently stored in the power meter press si i eystem Tables Sensor Cal Tables_ The Sensor Tbls screen is displayed as shown in Figure 6 8 Table 6 3 Installed power sensor models Table Sensor Model Table Sensor Model 0 DEFAULT 5 8485A 1 8481A 6 R8486A 2 8482A 7 08486A 3 8483A 8 R8486D 4 8481D 9 8487A 1 DEFAULT is a sensor calibration table where the reference calibration factor and calibration factors are 100 This sensor calibration table can be used during the performance testing of the power meter N1913 1914A EPM Series Power Meters User s Guide 163 6 Using N8480 Series Power Sensors 2 The 8482B and 8482H power sensors use the same data as the 8482A There are also ten sensor calibration tables named CUSTOM_0 through CUSTOM_9 These tables do not contain any data when the power meter is shipped from the factory Editing frequency dependent offset tables requires the following steps 1 Identify and select the table you want to edit 2 Rename the table 3 Enter the frequency and offset pairs 4 Save the table Procedure First select the table you want to
159. redefined upper and or lower limit value Limits are boundaries set for a certain power range and it can be applied to power ratio or difference measurement Power Meter Swept Source Device Under Test Figure 2 23 Limits checking applications In this application a swept frequency signal is applied to the input of the Device Under Test The power meter measures the output power The limits have been set at 4 dBm and 10 dBm A fail occurs each time the output power is outside these limits as shown in Figure 2 24 Amplitude Upper limit line Fail Ps 10 dBm 9 0 1 0 Lower limit line 0 4 dBm 0 Fail p gt Frequency Figure 2 24 Limits checking results N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Setting Limits The power meter can be configured to verify the current measurement in any measurement line against predefined upper and or lower limit values The range of values that can be set for the upper and lower limits and the default values depends on the measurement units in the currently selected measurement line see Table 2 3 Table 2 3 Range of values for window limits Window Maximum Minimum Default Default Units Maximum Minimum dB 200 dB 180 dB 60 dB 120 dB dBm 230 dBm 150 dBm 90 dBm 90 dBm 999 9 X 100 0 a 100 0 M 100 0 p W 100 000 XW 1 000 aW 1 000 MW 1 000 pW Procedure Set the limits as follows En
160. ress to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window N1913A 1914A EPM Series Power Meters User s Guide User s Guide 183 184 Using U8480 Series USB Power Sensors Figure 8 3 Frequency pop up 6 Confirm your choice by pressing MHz or GHZ key to close the Channel Setup screen 8 Proceed to make the measurement Reconnect any required attenuators or adaptors and connect the thermocouple sensor to the signal to be measured The corrected measurement result is displayed N1913A 1914A EPM Series Power Meters User s Guide Zeroing Using U8480 Series USB Power Sensors 8 The N1913 1914A EPM Series power meters support the ability to perform zeroing on the U8480 USB thermocouple sensor via the front panel and SCPI However the N1913 1914A EPM Series power meters do not support the choosing of the zeroing type and auto zeroing for the U8480 USB thermocouple sensor When zeroing is triggered via the front panel or SCPI the following pop up message shall appear LCL A CF 100 00 50 0MHz Zero a Zero c Zero D gt Zero a 1of1 Zero Figure 8 4 Zeroing pop up message Should an error occur during zeroing the following pop up message will appear N1913A 1914A EPM Series Power Meters User s Guide User s Guide 185 8 Using U8480 Series USB Power Sensors LCL Jaa A CF 100 00 50 0MHz Zero A Zero C Zero D gt Zero
161. ries Power Sensors A calibration factor in the range of 1 to 150 can be entered The following rules apply to naming sensor calibration tables The name must consist of no more than 12 characters All characters must be upper or lower case alphabetic characters or numeric 0 9 or an underscore _ No other characters are allowed No spaces are allowed in the name Enter or edit the frequency and cal factor pairs as follows 1 Press Insert to add a new frequency value or press Change to edit Use the numeric keypad to enter the required value in the Frequency pop up window Complete the entry by pressing the GHz MHz keys Enter the new cal factor value or press Change to edit Use the numeric keypad to enter the required value in the Cal Factor pop up window Complete the entry by pressing the key Continue adding or editing values until you have entered all the data you require When you have finished editing the table press Done to save the table Ensure that the frequency points you use cover the frequency range of the signals you want to measure If you measure a signal with a frequency outside the frequency range defined in the sensor calibration table the power meter uses the highest or lowest frequency point in the sensor calibration table to calculate the offset N1913 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters User s Guide 7 Using U2000 Series USB Power Sen
162. rigger setting menu 2 of 2 8 Press Source and Ext will be automatically enabled 9 Press Lof2 Output and On to allow a TTL level high to be produced at the rear panel TRIG OUTBNC port when the meter is triggered upon a completed measurement 10 Press Slope and select or to set the trigger edge 11 Set the trigger buffer size by sending SENSE BUFFer COUNt lt buffer_size gt command to meter using remote interface N1913 1914A EPM Series Power Meters User s Guide 57 2 58 General Power Meter Functions Refer to the N1913 1914A EPM Series Power Meters Programming Guide for the commands usage details Example of command set BUFF COUN 100 The power meter can be remotely controlled by LAN USB and GPIB IEEE488 programming interfaces Refer to N1913 1914A EPM Series Power Meters Installation Guide for details i aa 12 Press WS or to setup measurement setting such as measurement averaging measurement frequency offsets duty cycle and so forth Refer to General Power Meter Functions on page 31 for the setup procedures 13 Send OPC OPeration Complete command to meter to set the operation complete bit in the Standard Event Status register when all pending device operations are completed 14 Set the meter to continuous trigger mode by sending NITiate CONTinuous ON command to meter 15 Configure and set the required power sweep range and step on the power source accordingly
163. ritten to the error queue Error Indicator RMT A CF 100 00 Channel A 50 0MHz Undr Sns H8482A S Lmt Ofs 0dB 3 7 1 D Acq Free run a d B m Channel B Ho Sensor A 37 15dBm h 70 000dBm ated Figure 9 2 Error indicator position 196 Agilent N1913A 1914A EPM Series Power Meters User s Guide Maintenance 9 To read the error queue from the front panel Syst z e Press Eor Dist and use Next to scroll through each error Sa message To read the error queue from the remote interface use e the SYSTem ERRor command Error queue messages have the following format Error Error Device Number gt gt Description O P Dependent to IPC Error Queue Message For example 330 Self test Failed Battery Fault Errors are retrieved in a first in first out FIFO order If more than 30 errors occur the error queue overflows and the last error in the queue is replaced with error 350 Queue Overflow Any time the queue overflows the most recent error is discarded When the errors are read they are removed from the error queue This opens a position at the end of the queue for a new error message if one is subsequently detected When all errors have been read from the queue further error queries return 0 No errors To delete all the errors in the queue from the front panel press pm mm eS hg e Press System Error List and use Clear Er
164. roblem occurred A few minutes spent in performing these simple checks may eliminate time spent waiting for instrument repair Before calling Agilent Technologies or returning the power meter for service please make the following checks e Check that the line socket has power e Check that the power meter is plugged into the proper ac power source e Check that the power meter is switched on e Check that the line fuse is in working condition e Check that the other equipment cables and connectors are connected properly and operating correctly e Check the equipment settings in the procedure that was being used when the problem occurred e Check that the test being performed and the expected results are within the specifications and capabilities of the power meter e Check the power meter display for error messages e Check operation by performing the self tests e Check with a different power sensor Instrument serial numbers Agilent Technologies makes frequent improvements to its products to enhance their performance usability and reliability Agilent Technologies service personnel have access to complete records of design changes for each instrument The information is based on the serial number and option designation of each power meter Whenever you contact Agilent Technologies about your power meter have a complete serial number available This ensures you obtain the most complete and accurate service information The ser
165. rors To delete all the errors in the queue remotely use e the CLS clear status command The error queue is also cleared when the instrument power has been switched off Agilent N1913A 1914A EPM Series Power Meters User s Guide 197 9 198 Maintenance Error Message List 101 Invalid character An invalid character was found in the command string You may have inserted a character such as or in the command header or within a parameter For example LIM LOW O 102 Syntax error Invalid syntax was found in the command string For example LIM CLE AUTO 1 or LIM CLE AUTO 1 103 Invalid separator An invalid separator was found in the command string You may have used a comma instead of a colon semicolon or blank space or you may have used a blank space instead of a comma For example OUTP ROSC 1 105 GET not allowed A Group Execute Trigger GET is not allowed within a command string 108 Parameter not allowed More parameters were received than expected for the command You may have entered an extra parameter or added a parameter to a command that does not accept a parameter For example CAL 10 109 Missing parameter Fewer parameters were received than expected for the command You omitted one or more parameters that are required for this command For example AVER COUN 112 Program mnemonic too long A command header was received which
166. rum and Multitone Signals 110 Measuring TDMA Signals 113 Electromagnetic Compatibility EMC Measurements 115 Measurement Accuracy and Speed 116 This chapter describes how to use your E9300 E Series power sensors with N1913 1914A EPM Series power meters Agilent Technologies 103 3 Using E9300 E Series Power Sensors Introduction 104 The E9300 E Series power sensors are true average wide dynamic range RF microwave power sensors They are based on a dual sensor diode pair attenuator diode pair This technique ensures the diodes in the selected signal path are kept in their square law region thus the output current and voltage is proportional to the input power The diode pair attenuator diode pair assembly can yield the average of complex modulation formats across a wide dynamic range irrespective of signal bandwidth Further refinements are included to improve power handling allowing accurate measurement of high level signals with high crest factors without incurring damage to the sensor These sensors measure average RF power on a wide variety of modulated signals and are independent of the modulation bandwidth They are ideally suited to the average power measurement of multi tone and spread spectrum signals such as CDMA W CDMA and digital television formats Please refer to the documentation supplied with your E Series E9300 power sensor for specification and calibration information N1913 1914A EPM Series Power Meters
167. se characteristics are shown in italics or denoted as typical nominal or approximate Characteristic information is representative of the product In many cases it may also be supplemental to a warranted specification Characteristic specifications are not verified on all power meters The types of characteristic specifications can be placed in two groups e The first group of characteristic types describes attributes common to all products of a given model or option Examples of characteristics that describe attributes are product weight and 50 Q input Type N connector In these examples product weight is an approximate value and a 50 Q input is nominal These two terms are most widely used when describing a product s attributes 216 Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 e The second group of characteristic types describes statistically the aggregate performance of the population of products These characteristics describe the expected behavior of the population of products They do not guarantee the performance of any individual product No measurement uncertainty value is accounted for in the specification These specifications are referred to as typical Conditions The power meter and power sensor meet its specifications when e Stored for a minimum of two hours at a stable temperature within the operating temperature range and turned
168. sent a parameter value or title Channel This User s Guide describes the operation for both the single channel and the dual channel power meter To identify channels on a dual channel meter a Channel softkey on an N1913A meter becomes Channela and Channel B7 on an N1914A When you are asked to press the channel SOftkey in a procedure make sure you select the relevant channel Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Front Panel Keys and Connections This section briefly describes the functions of the front panel keys and connectors 5 il N1914A ko P a These keys are located to the left of the display Key Function Press this key to preset the power meter to the default setting Press this key to control the power meter from the front panel when it is operating via the remote interfaces when Local Lock Out is not enabled Press this key to select the upper or lower measurement window The A selected window is highlighted by a blue line on the right side of the v window Any measurement setup you create is performed in the selected window Press this key to choose windowed expanded or full screen display of a ANS f o numeric measurement 598 Sees Press this key to switch the meter between on and standby When power is supplied the background LED is red Pressing the key switches the power meter on and the background LE
169. sor Cal Tables 2 Use the O and U keys to highlight one of the 20 table titles and press Table to highlight On RMT Sensor Tbls Tbi Hame State Pts 0 A 2 ES 1 8481A off 19 Table 2 8482A off 12 3 8483A off 10 A Table 4 8481D off 21 off KN 5 8485A off 22 6 R8486A off 17 B Table 7 QB486A off 19 Ei on 8 R8486D off 9 8487A off 17 54 Done Figure 6 8 Sensor table selected 160 N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 When no data is contained in the highlighted table the Table key is disabled grayed out 3 Press Done to complete the selection of the calibration factor table 4 Press Done again to display the measurement screen Figure 6 9 shows which offset table is selected RMT A 50 0MHz p Sensor Table 2 Selected 38 9 Siam Figure 6 9 Frequency dependent offset indicator Tables Sensor Cal gt Tables Freq Dep gt Offset S Channel 5 To change the frequency press channel and use the and o keys to highlight the Frequency field a Select 6 Press to display the Frequency pop up window Use the numeric So keypad to enter the required value in the Frequency pop up window 7 To confirm your choice press the appropriate unit softkey Connect the power sensor to the signal to be measured 9 The corrected measurement result is now displayed If the measurement frequency does not correspond directly to a fre
170. sors Introduction 168 Power Meter Configuration 169 Measurement Accuracy 172 Electromagnetic Compatibility EMC Measurements 174 Measurement Accuracy and Speed 175 This chapter describes how to use your U2000 Series USB power sensors with N1913 1914A EPM Series power meters Agilent Technologies 167 7 _ Using U2000 Series USB Power Sensors Introduction 168 The U2000 Series USB power sensors are true average wide dynamic range RF microwave power sensors They are based on a dual sensor diode pair attenuator diode pair This technique ensures the diodes in the selected signal path are kept in their square law region thus the output current and voltage is proportional to the input power The diode pair attenuator diode pair assembly can yield the average of complex modulation formats across a wide dynamic range irrespective of signal bandwidth The dual range Modified Barrier Integrated Diode MBID package includes further refinements to improve power handling allowing accurate measurement of high level signals with high crest factors without incurring damage to the sensor These sensors measure average RF power on a wide variety of modulated signals and are independent of the modulation bandwidth They are ideally suited to the average power measurement of multi tone and spread spectrum signals such as CDMA W CDMA and digital television formats Please refer to the documentation supplied with your U2000 Series USB
171. sp Type lt a 3 4 Figure 1 1 Dual numeric display 1 The status reporting line displays messages and the control status of the power meter For example the status can be either RMT remote GPIB USB or LAN operation or LCL local front panel operation The message fields indicate ERR for any error conditions that occur or informing you to Please Zero the power sensor The measured channel is shown with a 8480 Series or E Series power sensor connected This field displays the menu title For example Channel Setup or press oa and the Zero Cal menu is displayed The blue highlight on the right hand side of the window shows it is the currently selected measurement display line This measurement line is the Upper Window Upper Measurement The available softkey labels are displayed in these three fields Additionally settings associated with the labeled function are displayed under the label Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Softkeys labels that are grayed out cannot be selected 6 This displays the measurement units either dBm or Watts W 7 This displays the number of pages in the current menu For example 1 of 2 indicates that there are two pages in the menu and the first page is currently displayed Pressing the softkey displays the next page indicated by 2of2 press the softkey to display the previous menu page RMT A CF 100 0 8 gt 50 0MHz
172. sure you have selected the channel you wish to set up mN 1 Press Meas Meas Select to display the Measurement Setup menus 2 Use the and keys to highlight the Limits setting field 3 Press to check the Limits setting field 4 Use the D key to highlight the Minimum Limits value field 5 Press to display the Minimum Limit pop up N1913 1914A EPM Series Power Meters User s Guide 63 2 64 General Power Meter Functions 090 000 Figure 2 25 Minimum limit pop up 6 Use the numeric keys to enter the required value and press dBm 7 Use the O key to highlight the Maximum Limits value field 8 Press to display the Maximum Limit pop up 9 Use the numeric keys to enter the required value and press dBm Prev 10 Press tec key to close the Measurement Setup screen The Limits can be disabled and re enabled by checking the Limits setting field N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Checking for Limit Failures Limit failures are displayed in the appropriate field in the measurement window on the power meter s display as shown in Figure 2 26 RMT A CF 100 0 40 0 Son A CE 1000 Disp Form This measurement has failed as the result is greater than the set limit level This measurement has failed as the result is less than the set limit level Figure 2 26 Limit failures N1913 1914A EPM Series Power Meters User s Guide
173. sword pop up Figure 2 46 is displayed again Cancel A SF 100 00 50 0MHz 49 04 4am Enter AN Ho Sensor ChB 1of1 Figure 2 47 6 digit password entered 86 N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Fall Cancel A gasses A9 04 c5m cw AN Ho Sensor ChB Password entered is not 6 digits Please enter again 1071 Figure 2 48 Warning message 6 The reconfirm password pop up will be displayed see Figure 2 49 You will be prompted to enter the password again for confirmation RMT A CF 100 00 0 0MHz Cancel 49 04aam Enter AN Ho Sensor ChB T 1of1 Figure 2 49 Reconfirm password 7 A warning message pop up will be displayed if the password entered is different from the initial password see Figure 2 50 This warning will appear for two seconds before the enter password pop up is displayed again N1913 1914A EPM Series Power Meters User s Guide 87 2 General Power Meter Functions RMT A CF 100 00 Hz Cancel 49 04 4am Enter AN Ho Sensor ChB Password entered is different Please enter again T 1of1 Figure 2 50 Warning message 8 When the correct password is successfully entered for the second time you will be prompted for confirmation before the screen is blanked see Figure 2 51 Press Confirm CF 100 00 A 50 0MH2 Cancel 49 04 dBm Confirm AN Ho Sensor ChB Please Confirm 1of1
174. t resolution 10dB decreasing power step normal and x2 speed modes refer to Figure 10 2 for E441X series sensors and Figure 10 3 for E9300 series sensors Table 10 7 E441x and E9300 Series Settling Time Number of Averages 1 2 4 8 16 32 64 128 256 512 1024 Normal Mode Settling Time s 0 07 0 09 0 15 0 24 045 7 1 19 35 67 14 27 X2 Mode E Series power sensors in Fast mode using free run trigger within the range 50 dBm to 17 dBm the settling time is N1913A 70 ms N1914A 20 ms Normal X2 Mode Mode Max dBm 80 ms 70 ms 50 dB Typical Sensor Settling Dynamic 10 dB Times 130 ms 90 ms Range 11s 450 ms 10 dB 6 7 s 3 5s 10 dB Y Min dBm Figure 10 2 E441x Series Settling Time with Auto Filter Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics High Power Path Typical Settling Times Low Power Path D4 Normal X2 Mode Mode 70 ms 40 ms 210 ms 120 ms 400 ms 210 ms 1s 400 ms 70 ms 40 ms 120 ms 70 ms 1s 400 ms 6 5s 3 4 ms 13s 6 8 s 10 dBm 2 dBm 4 dBm 10 dBm 20 dBm 30 dBm 40 dBm 50 dBm Max dBm Sensor Dynamic Range Min dBm Figure 10 3 E9300 Series Settling Time with Auto Filter Agilent N1913 1914A EPM Series Power Meters User s Guide 10 229 10 Specifications and Charac
175. t window when such an event occurs A pop up window is displayed for approximately two seconds The text in the pop up window gives details of the warning type for example to indicate that a power sensor has insufficient bandwidth or a previous entered frequency value in a table Depending on the severity of the warning the pop up may be displayed in orange or red When the instrument A self test completes the power meter state will be restored AN Duplicate frequency Agilent N1913 1914A EPM Series Power Meters User s Guide 13 1 Introduction Wait Symbol Pop up The wait symbol is displayed when the power meter is carrying out a procedure and no action is required from you The symbol appears in a pop up window It may appear for example during a calibration i Please Wait Confirm Symbol Pop up This type of pop up window is displayed when you are required to press Confirm to verify your previous selection For example prior to a Save being carried out P Please Confirm Numeric Entry Pop up This type of pop up window is displayed when you need to modify numeric data The numeric keys allow you to enter the value 14 Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction Text Entry Pop up This type of pop up window is displayed when you need to modify alphanumeric data such as table names The up down arrow keys increment and decrement the alphanumeric digit that the cursor is c
176. teristics 230 For Agilent N8480 Series power sensors Typical Settling time 0 to 99 settled readings over the GPIB Auto filter default resolution 10 dB decreasing power step normal and x2 speed modes refer to Figure 10 4 Manual filter 10 dB decreasing power step refer to Table 10 8 Table 10 8 N8480 Series Settling Time Number of Averages 1 2 4 8 16 32 64 128 256 512 1024 Settling Time s 0 15 02 03 05 11 1 9 34 66 13 27 57 Normal Mode Settling Time s 0 15 0 18 0 22 0 35 0 55 1 1 1 9 35 69 145 33 X2 Mode Normal X2 Mode Mode l 150 ms i 150 ms 20 dB Sensor Typical 10 dB Settling 200ms 180 ms Dynamic ji Times 1s 400 ms 10 dB Range 6 6 s 3 6s ll 10 dB 13 58 6 6 s 10 dB Min dBm Figure 10 4 N8480 Series Settling Time with Auto Filter Agilent N1913 1914A EPM Series Power Meters User s Guide Specifications and Characteristics 10 For Agilent U2000 Series power sensors In FAST mode using Free Run trigger for a 10 dB decreasing power step the settling time is 25 ms Table 10 9 U2000 Series power sensors settling time Number of Averages 1 2 4 8 16 32 64 128 256 512 1024 Normal Mode Settling Time s 0 042 0 05 0 09 0 17 0 34 0 66 1 3 26 52 10 4 20 9 X2 Mode 1 Manual filter 10 dB decreasing p
177. tery pack internal temperature is higher than 45 C The battery s rated temperature range is from 0 C to 50 C for discharging mode Pop up messages will be displayed to advise you to power down the meter once the battery temperature is under or above the rated temperature RI Battery Battery Status updated once per minute Backlight Lon y Backlight k Full Backlight Approx 296 mins of charge Timed Using battery power lll Temperature Within rated temperature fooop 10f1 Figure 2 64 Battery status display Low Power Battery Condition When the power meter is running on battery power and there are less than 10 minutes of run time remaining a Battery Power Low pop up message will be displayed In addition the message Battery Low will appear at the bottom of the display screen with the battery indicator filled with red see Figure 2 65 _RMT A CF 100 00 ana a Service Low battery indicator Figure 2 65 Low battery indicator N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 Display Backlight Control When the battery power is being used the display backlight control will be available If AC power is being used the display backlight control menu is grayed out and the backlight is permanently turned ON The display backlight can be turned OFF by pressing Backlight Off on the backlight menu When backlight is turned OFF pressing on any o
178. the Agilent battery option power meter models to charge the battery The battery packs should be stored in an environment with low humidity and free from corrosive gas at a recommended temperature range lt 21 C Extended exposure to temperatures above 45 C could degrade the battery s performance and life N1913 1914A EPM Series Power Meters User s Guide 101 2 General Power Meter Functions Setting the Cable Short Long When connecting the power sensor with Agilent 11730F power sensor cable 61 m 200 ft you are required to change the cable setting from Short default setting to Long or an error will occur when the power sensor is connected To access the cable setting fevcta 1 Press System 1lof2 and select Service 2 In the Service menu press 1 of2 and select Cable Short Long to toggle between the short or long cable option The LCB indicator will appear in blue at the bottom of the display to indicate that the long cable option is selected as shown in Figure 2 67 LCL A CF 100 00 50 0MHz Service 45 69 gam JX nosensor cnc ZX to sensor cns ta J Wo sensor cno Cable Short IGM __ Os 2o0f2 gt Figure 2 67 Short long cable option 102 N1913 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters User s Guide 3 Using E9300 E Series Power Sensors Introduction 104 Power Meter Configuration 105 Measurement Accuracy 107 Measuring Spread Spect
179. tion failed configuration or No LAN configuration is selected Lan Fault LAN cable is unplugged Status Disconnected Lan Restart the network and try to obtain an IP address using Status Restarting selected LAN configuration Agilent N1913 1914A EPM Series Power Meters User s Guide 19 1 20 Introduction Lan DHCP Not Available Status Running e Unable to obtain IP address from DHCP server if user select DHCP configuration IP address obtained from Auto IP or manual configuration RMT Remote Interfaces boae GPIB IEEE 488 USB address Address 2391 21784 MY480044HQ Network DHCP Hetwork MAC address 00 30 d3 11 90 be DHCP AutolP v Manual Network AutolP IP address 141 183 237 33 Subnet mask 255 255 252 0 Default gateway 141 183 236 1 Host name 4 H19144 044HQ 30 30_0 0 0 0 Network gt Manual DHS server s 141 183 236 41 141 183 2 Restart Hetwork Lan DHCP Hot Available Status Running 1of2 gt Figure 1 7 Example of Lan Status message For more details on remote interface configuration refer to V7913 1914A EPM Series Power Meters Installation Guide Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Using the Remote Front Panel The instrument Web interface also provides a virtual front panel interface that can be used to control the power meter remotely 1 On the left of the Welcome Pa
180. tion information is supplied in the form of calibration factors Using calibration factors enables you to achieve improved measurement accuracy The EPM Series power meters provide two methods of using the calibration factors e inputting the individual calibration factor for a frequency prior to making the measurement or e using sensor calibration tables If you are making most of your measurements at a single frequency or in a narrow range of frequencies entering a specific calibration factor is a more effective method Only a minimal amount of data entry is required However if you are making measurements on a wide range of signal frequencies a sensor table is more effective as you only need to enter the frequency of the signal you are measuring The power meter automatically selects and applies the calibration factor from the selected table N1913 1914A EPM Series Power Meters User s Guide 131 5 Using 8480 Series Power Sensors Frequency Specific Calibration Factors This section shows you how to make a measurement using the calibration factor for the frequency of the signal you want to measure Tip This method is best suited to making several measurements at one frequency as you need only enter a small amount of data Using this method requires the following steps 1 Zero and calibrate the power meter sensor combination 2 Set the calibration factor value for the frequency of the signal you want to measure 3 Make the m
181. to this product and specifically disclaims any implied warranty or condition of merchantability fitness for a particular purpose or satisfactory quality To the extent allowed by local law the remedies provided herein are the Buyer s sole and exclusive remedies Agilent shall not be liable for any direct indirect special incidental or consequential damages including lost profit or data whether based on warranty contract tort or any other legal theory Restricted Rights Legend Technology Licenses The Software and Documentation have been developed entirely at private expense They are delivered and licensed as commercial computer software as defined in DFARS 252 227 7013 Oct 1988 DFARS 252 211 7015 May 1991 or DFARS 252 227 7014 Jun 1995 as a commercial item as defined in FAR 2 101 a or as restricted computer software as defined in FAR 52 227 19 Jun 1987 or any equivalent agency regulation or contract clause whichever is applicable You have only those rights provided for such Software and Documentation by the applicable FAR or DFARS clause or the Agilent standard software agreement for the product involved The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Safety Summary Safety Notices vi The following general safety precautions must be observed during all phases of operation
182. u and the channel Cal softkey to start the calibration Se routine The Calibrating pop up is then displayed N1913 1914A EPM Series Power Meters User s Guide 123 4 124 Using E4410 E Series Power Sensors You can reduce the steps required to carry out the zero and calibration procedure as follows 1 Connect the power sensor to the POWER REF output 2 Press ca and Zero Cal For dual channel meters press Zero Cal Zerot CalA or Zero CalB as required Now set the frequency of the signal you want to measure The power meter automatically selects the appropriate calibration factor Channel Channel 6 Press X lt J On dual channel meters select the required channel AN m 7 Use the L and keys to highlight the Frequency value field and press to display the Frequency pop up Use the numeric keypad to enter the required value in the Frequency pop up window Figure 4 3 Frequency pop up 8 Confirm your choice by pressing MHz or GHz A gt Prev 9 Press E s key to close the Channel Setup screen Make the measurement now 10 Connect the power sensor to the signal to be measured The corrected measurement result is displayed N1913 1914A EPM Series Power Meters User s Guide N1913 1914A EPM Series Power Meters User s Guide 5 Using 8480 Series Power Sensors Introduction 126 Power Meter Configuration 127 Measurement Accuracy 131 Frequency Specific Calibration Factors 132 Sensor
183. ulting frequency compensation information is written into EEPROM This allows the frequency and calibration data to be downloaded to the power meter automatically Using calibration factors enables you to achieve improved measurement accuracy This section describes making continuous wave measurements using the N8480 Series power sensors excluding Option CFT Making a measurement requires the following steps 1 Zero and calibrate the power meter sensor combination 2 Set the frequency for the signal you want to measure 3 Make the measurement Procedure 1 First zero and calibrate the power meter sensor combination 2 Ensure the power sensor is disconnected from any signal source Press cal and the channel Zero softkey The Zeroing pop up is displayed 3 Connect the power sensor to the POWER REF output Press cat and the channel Cal softkey to start the calibration routine The Calibrating pop up is then displayed You can reduce the steps required to carry out the zero and calibration procedure as follows 1 Connect the power sensor to the POWER REF output ww 2 Press Lo and Zero Cal For dual channel meters press Zero Cal Zero CalA or Zero CalB as required N1913 1914A EPM Series Power Meters User s Guide Using N8480 Series Power Sensors 6 Now set the frequency of the signal you want to measure The power meter automatically selects the appropriate calibration factor fi 4 Press C
184. up is displayed 2 Press Offsets to display the Offsets Setup 3 Use the O and keys to highlight the Duty Cycle setting field Y 4 Press to check the Duty Cycle setting field Duty cycle Cal Fac 10 0 setting field Duty cycle 4 di uty Cycle vV 10 000 value field Figure 2 17 Duty cycle setting 5 Press L to highlight the Duty Cycle value field and press to display the Duty Cycle pop up Use the numeric keypad to enter the required value in the Duty Cycle pop up window 6 Confirm your choice by pressing Prev 7 Press ee Esc_ key to complete the duty cycle entry The Dty Cyc indicator is displayed as shown in Figure 2 18 RMT D uty cycle A CF 100 0 Dty Ofs Rel r A A 50 0MHz A Cyc Over Lmt Figure 2 18 Duty cycle indicator Pulse power averages out any aberrations in the pulse such as overshooting or ringing For this reason it is called pulse power and not peak power or peak pulse power In order to ensure accurate pulse power readings the input signal must be pulsed with a rectangular pulse Other pulse shapes such as triangle chirp or Gaussian will cause erroneous results The pulse power on off ratio must be much greater than the duty cycle ratio N1913 1914A EPM Series Power Meters User s Guide 53 2 General Power Meter Functions Setting External Trigger for Average Power Measurement 54 There are two modes featured in triggered average power measurement
185. urrently positioned The left right arrow keys move the cursor to another alphanumeric digit MEFAULT List Pop up This pop up window is displayed when you are required to select an entry from a list Use the up down arrow keys to highlight your choice Press select to complete the entry Agilent N1913 1914A EPM Series Power Meters User s Guide 1 1 Introduction Rear Panel Connections 16 F 6 7 8 9 No Connections 1 VGA Output Option 010 2 Ground Connector 3 USB Type A port Option 008 Option 009 This USB port is solely for U2000 Series power sensors usage only 4 Recorder 1 2 Recorder output two outputs are fitted to dual channel meters connections are made via BNC connectors This output produces a DC voltage that corresponds to the power level of the channel input 5 AC Inlet This power meter has an auto configuring power supply This allows it to operate over a range of voltages without manually being set to a certain voltage 6 Trig In Trig Out Trigger input and output connections are made via BNC connectors 7 USB Mini B port This USB port is used only for remote interface connection 8 LAN 9 GPIB This connector allows the power meter to be controlled remotely using the General Purpose Interface Bus Agilent N1913 1914A EPM Series Power Meters User s Guide Introduction 1 Using the Instrument Web Interface You can communicate with the N1913 191
186. wer Sensors This chapter describes how to use your 8480 Series power sensors with N1913 1914A EPM Series power meters Using N8480 Series Power Sensors This chapter describes how to use your N8480 Series power sensors with N1913 1914A EPM Series power meters Using U2000 Series USB Power Sensors This chapter describes how to use your U2000 Series power sensors with N1913 1914A EPM Series power meters Using U8480 Series USB Thermocouple Sensors This chapter describes how to use your U8480 Series thermocouple sensors with N1913 1914A EPM Series power meters 10 Maintenance This chapter describes the built in tests error messages and general maintenance Specifications and Characteristics This chapter describes the specifications and characteristics of your N1913 1914A EPM Series power meters xiii THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK xiv Contents 1 Notices ii Certification iii General Warranty iii Warranty Service iii Limitation of Warranty iv Exclusive Remedies iv Restricted Rights Legend v Technology Licenses v Safety Summary vi Safety Notices vi Safety Symbols vii General Safety Information viii Environmental Conditions ix Regulatory Information ix Regulatory Markings x Declaration of Conformity DoC xi In This Guide xii Introduction LXI Class C Compliant Power Meter 2 Rack Mounting 2 Power Meter and Sensor Capability 3 Conventions Used in this Guide 4 Front Panel Keys a
187. wer sensors Signals with digital pulse or other forms of amplitude modulation may introduce measurement errors Multi tone signals containing multiple frequency components or signals with significant harmonic content gt 45 dBc may introduce measurement errors at high power levels Please refer to the documentation supplied with your E Series E4410 power sensor for specification and calibration information N1913 1914A EPM Series Power Meters User s Guide Power Meter Configuration The N1913 1914A EPM Series power meters automatically recognize an Using E4410 E Series Power Sensors 4 E Series E4410 power sensor when it is connected The sensor calibration data is automatically read by the power meter Also the power meter automatically configures the averaging as shown in Figure 4 1 Maximum Sensor Power Power Sensor Dynamic Range Minimum Sensor Power Figure 4 1 E Series CW sensor auto averaging settings Resolution Setting 2 3 4 1 1 8 1 1 16 1 2 32 1 16 256 8 128 128 saBesaay yo Jaquinyy These values are valid only for the power meter channel connected with E Series E4410 power sensor Averaging settings can also be manually configured N1913 1914A EPM Series Power Meters User s Guide 121 4 122 Using E4410 E Series Power Sensors Default Channel Setup When an E Series E4410 power sensor is connected the following Channel Setup is automatically configured Carrying out a
188. ycles by sending NITiate CONTinuous ON command to meter 14 Configure and set the required power sweep range and step of the power source 15 Set the power source trigger input and trigger output 16 Set the power source to sweep N1913 1914A EPM Series Power Meters User s Guide General Power Meter Functions 2 17 Poll the status of the power meter by sending ESR ESR will return a 1 when buffering is completed Use FETCh to retrieve all the buffered measurement In both power sweep and frequency sweep mode the meter TRIG OUT to power source TRIG IN connection is optional You may choose to setup the Dwell time in the power source step setting to cater the maximum settling time required by the power meter Determine the Right Step to be Set Number of frequency step can be calculated by using equation below Step fstop fstart Interval Interval where Step Number of frequency step fstart Frequency sweep s start point fstop Frequency sweep s stop point Interval Frequency step size Example When fstart 1 GHz and fstop 5 GHz with given interval of 0 5 GHz the Step should be set to Step stop fstart Interval Interval 6 GHz 1 GHz 0 5 GHz 0 5 GHz eo N1913 1914A EPM Series Power Meters User s Guide 61 2 General Power Meter Functions Setting Measurement Limits 62 You can configure the power meter to detect when a measurement has crossed over a p
189. your needs for measurement accuracy and speed For example using an E9300 1 4A sensor where the range switch point is 10 0 5 dBm in a pulsed signal configured as follows Characteristic Value Peak Amplitude 6 dBm Duty Cycle 25 The calculated average power is 12 dBm N1913 1914A EPM Series Power Meters User s Guide User s Guide 117 3 118 Using E9300 E Series Power Sensors Accuracy The value of 12 dBm lies in the lower range of the E Series E9300 power sensor In autoranging mode AUTO the power meter determines the average power level is below 10 dBm and selects the low power path However the peak amplitude of 6 dBm is beyond the specified square law response range of the low power path diodes The high power path 10 dBm to 20 dBm should be used to ensure a more accurate measurement of this signal However range holding in UPPER the high power path for a more accurate measurement results in considerably more filtering Speed and Averaging The same signal also requires that consideration is given to measurement speed As shown above in autoranging mode the power meter selects the low power path in the E Series E9300 power sensor With auto averaging also configured minimal filtering is applied Values of 1 to 4 for average power levels above 20 dBm are used in the low power path Refer to E9300 E Series auto averaging settings on page 105 If the range is held in UPPER fo
190. ys to select the Filter setting field 3 Press and use the LJ and VY keys to step through the available settings Select MAN 4 Use the C key to select the Meas Avg value field N1913 1914A EPM Series Power Meters User s Guide User s Guide 113 3 114 Using E9300 E Series Power Sensors 5 Press to display the Meas Avg Count pop up 6 Use the numeric keys to enter the required value 7 Press Enter to complete the entry Ensure that the filter is not reset when a step increase or decrease in power is detected by switching the step detection off Procedure Switch off step detection as follows ETN 1 Press Channel On dual channel meters select the required channel 2 Use the L and V keys to select the Step Detect setting field 3 Press to check the step detection to Off ZI ff Prev sy 4 Press 4 Es 4 key to close the Channel Setup screen Achieving Stable Results with GSM Signals Signals with a pulse repetition frequency PRF close to a multiple or a submultiple of the 440 Hz chopper amplifier signal generate a beat note at a frequency between the PRF and 4F400Hz0 Hz Control over the filter settings is again required to obtain stable results Tip The PRF of a GSM signal is approximately 217 Hz and thus requires more averaging than most other TDMA signals To achieve a stable measurement use the filter setting procedures to set the Length Experimentally a Length setting of 148 gives optimum results a

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