Home

Agilent Technologies Switch/Measure Switch User Manual

1. Description Description C1H 37 7 1 bypass 21 C5H bypass 9 GND RIL 50 C1L bypass 22 C5L bypass 10 No Connect pins R2H 27 C2H bypass 43 C6Hbypass 25 11 12 17 18 31 32 ROL 28 C2L bypass 44 CLbypass 26 9 and 45 46 R3H 39 C3H bypass 19 C7H bypass 15 R3L 40 C3L bypass 20 C7L bypass 16 R4H 5 C4H bypass 3 C8H bypass 47 R4L 6 C4L bypass C8L bypass 48 Matrix 2 NOTE C4H seas R8H R8L C5H C5L NC C7H C7L pass po Interlock O Qe oO NC eae ae uud C2H 21 bypass ed REL C amp L NC NC Interlock amp e 0 0 0 00 0 CIL NC NC ous tyes R5H R5L In this diagram and the table below R represents row and C represents column Bypass means to bypass the 100Q in rush resistor that protects the reed relays MAGNIN s a safety Description Description Description feature interlock pins 17 R5H 49 C7H C4H bypass 3 Interlock 17 and 33 must be shorted to R5L 50 C7L CAL bypass 4 Interlock 33 enable the Analog Bus R6H 27 C8H C5H bypass 9 o Connect pins relays which are on Matrix R6L 78 C8L 30 CBL bypass 10 1 12 18 31 32 34 dereud dua R7H 39 CIH b
2. 406 32 402 bikes RI 0 9009 9 SINCE As a safety feature interlock pins 17 Description Pin Description and 33 must be shorted es 13 3ctbypass 3 nerok T17 ee ers Tang 27 1 7 4C4 bypass 4 interlock 33 relays which are on Matrix 2 to close The optional 3R3 39 3C8 3C5 bypass 9 0 connect pins 349337 002 for 1 wire 3R4 5 4C8 30 4C5 bypass 10 11 12 18 31 32 34 terminal block shorts these 4R1 50 3C1 bypass 21 3C6 bypass 25 pnd 45 46 pins for you This safety aR2 28 4 1 bypass 22 4CO bypass 26 feature protects inadvertent 10 2 bypass 43 3 7 bypass 15 routing of high voltages from the Analog Buses to 484 6 4 2 bypass 44 4C7 bypass 16 the D sub connector of the 3C1 37 3C3 bypass 19 3C8 bypass 47 module 4C1 38 4C3 bypass 20 4C8 bypass 48 160 34980A User s Guide Matrix Switch Modules 5 34933T 002 Terminal Block for One Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an instal
3. Description eature interlock 1 pins 1 6H 35 11H 19 16H 37 17 and 33 on Bank 1 must be shorted to enable 2 the Bank 1 Analog Bus 2H 3 Interlock 1 17 relays to close The 2L 4 Interlock 1 33 optional 34923T 001 for 3H 5 GND 34 hne Pale 3L 6 Reserved 18 shorts these pins for you This feature protects aH 3 Reserved inadvertent routing of 4L 10 Reserved 48 high voltages from the 5H 13 Reserved 49 Analog Bus to the D sub 5L 14 Reserved 50 connector of the module Bank 2 As a safety feature interlock 2 pins 17 and 33 on Bank 2 must be shorted to enable the Bank 2 Analog Bus relays to close The optional 34923T 001 for 2 wire shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 116 COM COM 21H 211 22H 221 23H 231 2H 2L 24H 244 34L 25H 251 40H 401 Interlock 2 ee Reserved 31H 31L 27H 27L 37H 33H 33L 29H 291 39H 391 35H 35L Interlock2 ORC Reserved GND 26H 261 36H 36L 32H 28H 28L 38H 38L 30H 30L EN 00 9 1900 09 19 0 090909 4919 Description Description 1 26H 35 31H 19 36H 37 2 22H 3 Interlock 2 17 22L 4 Interlock 2 33 23H 5 GND 34 23L 6 Reserved 18 24H 9 Reserved 47 24L 10
4. 104 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34921A D Sub Connectors o Bank 1 Bank2 o Bank 1 For orientation the D sub connector end of the module is facing you COM COM Q1H 1L 2H 2L 3H 3L 1H 1L 4H 4L 14H 14L 5H 5L 20H 20L Interlock1 0 9 0 5 9 9 0 9 9 9 09 0909 09 09 9 TSIL 11H 11L 7H 7L 17H 17L 13H 13L 9H QL 19H 19L 15H 151 Interlock 1 0000000000000000 AMP AMP AMP AMP GND 6H 6L 16H 16 12H 12L 8H 18H 18L 10H 10L 41L 4I 42L 42 CBC 9 49 09 6000060600600 TSIL represents Temperature Sensor Interface Line This line is used for temperature interface only As a safety eature interlock 1 pins 17 and 33 on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close The optional 34921T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Bus to the D sub connector of Description Description COM1H 7 COM1L 8 Interlock 1 17 Interlock 1 33 GND 34 TSIL 18 AMP 41L 47 AMP 41I 48 AMP 42L 49 Description Pin Bescripion Pin DescripionFi AMP 421 50 the module Bank 2 COM COM TSIL represents 21H 211 22H 22L 23H 23L 2H 21 24H 24L 34H 34L 25H 25L 40H 401 2 ia Inte
5. Bank 1 For orientation the D sub connector end of the module is facing you COM COM 2L 1H 1L 3H 3L 9H QL 4H 10H 10L 5H 5L 000000000000000000600 16L 11H 11L 17H 17L 12H 12L 34H 34L 19H 19L 14H 14L 20H 201 Interlocki GND 26H 26L 21H 211 22H 221 27H 27L 13H 13L 28H 281 24H 241 29H 29L 15H 0 6 C9 09 09 0 0 9 09 9 D 0 OC OOOO 2 9 18L 23H 23L 35H 35L 30H 30L 25H 25L 9 9 0 O 15L Interlock 1 NC NC Description Description Description 1H 3 15H COM1H 9 1L 4 COMIL 10 2H 7 Interlock 1 39 2L 8 Interlock 1 59 3H 11 GND 40 3L 12 GND 60 4H 15 No Connect 77 4L 16 No Connect 78 5H 19 5L 20 6H 1 6L 2 7H 5 7L 6 34980A User s Guide WARNING As a safety feature interlock 1 pins 39 and 59 on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close The optional 34922T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 109 4 110 Low Frequency Multiplexer Switch Modules Bank 2 Bank 1 Bank2 o For orientation the D sub connector end of the module is facing you COM 41H 411 36H 36L 42H 421 37H 37L 2L 38H 38L 44H 44L 39H 39
6. 0G G 0 9 0 9 G9 909 17L 12H 12L 8H 8L 0000000000G00000Q0G000 0900000303000 909 GND 32H 32L 31H 31L 33H 33L 18H G9 9 amp 9 O 11H 17H COM COM 2L 1H Q1L 3H 3L 9H 9L 4H 4L 10H 10L 5H 5L 34H 34L 19H 19H 14H 14L 20H 20L Interlocki 13L 28H 281 24L 241 29H 291 15H 15L Interlock 1 18L 23H 23L 35H 35L 30H 30L 25H 25L NC NC Description Pin J Description Pim Description Pin_ Descrotion Pin J Description Pin Description Pm 1H 3 8H 29 15H 57 22H 45 29H 55 COM1H 9 1L 4 COMI L 10 2H 7 Interlock 1 39 2L 8 Interlock 1 59 3H 11 GND 40 3L 12 GND 60 4H 15 No Connect 77 4L 16 No Connect 78 5H 19 5L 20 6H 1 6L 2 7H 5 7L 6 124 As a safety feature interlock 1 pins 39 and 59 on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close The optional 34924T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 Bank 2 Bank 1 Bank 2 For orientation the D sub connector end of the module is facing you 41H 41L 36H 36L 42H 421 37H 37L 2H 2L 38H 38L 44H 441 39H 39L 45H 45L 40H 40L OO G O G G amp 0
7. c x 34980A User s Guide 161 5 Matrix Switch Modules 162 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide General Purpose Switch Modules General Purpose Switch Modules 164 34937A and 34938A SCPI Programming Examples 166 34937A 32 Channel GP Switch 168 34937T Terminal Block 170 34938A 20 Channel High Current GP Switch 171 34938T Terminal Block 173 RE Agilent Technologies 163 6 General Purpose Switch Modules General Purpose Switch Modules 164 Use the general purpose GP switch modules in your 34980A mainframe to route signals or control other system devices The 34937A 32 Channel Form and Form A GP Switch Module provides independent control of 32 latching relays Twenty eight Form C relays rated for 1 A at 60 W per channel Four Form A relays rated for 5 A at 150 W per channel For power switching applications the 34938A 21 Channel 5 A Form A Switch Module offers 20 Form A relays rated for 5 A at 150 W per channel Both modules contain armature latching relays and you can use these switches for device actuation digital output or combined with other switch modules to create flexible switching topologies You can close multiple channels at the same time These modules do not connect to the analog buses A temperature sensor on these modules triggers system interrupts when high carry current induced heat on the modules i
8. Agilent 34980A Multifunction Switch Measure Unit User s Guide e e o e 9095 8 90 Dual Triple Microwave Switch E ve Modules 34946A and 34947A Dual Triple Microwave Switch Modules 182 Installing SMA Connectors 183 34946A and 34947A SCPI Programming Examples 182 34946A and 34947A Simplified Schematics 184 RE Agilent Technologies 8 Dual Triple Microwave Switch Modules 34946A and 34947A Dual Triple Microwave Switch Modules The 34946A and 34947 A modules offer single pole double throw switches in either 4 GHz or 20 GHz options The 34946A and 34947A modules do not connect to the analog buses Instead all connections are made through the visible SMA connectors via external cables Each connector on the modules is labeled with a three digit number that represents a channel you can control programatically from the front panel or with the Web UI The 34946A module uses two independent Agilent N1810TL switches These terminated 3 port 50 ohm switches are designed to maintain impedance matching The 34947A module contains three independent Agilent N1810UL switches These higher density 3 port switches are unterminated For channel configuration on each module refer to the simplified schematics on page 184 34946A and 34947A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the microwave switch modules The slot and
9. 10 Ave 3 LAN 2 4 5 e SLOT 1 SLOT D e LOT COVER veo a 29 Je Je UA ia o 19 9 Er SLOT COVER SLOT COVER A 2 SLOT COVER SLOT Ci a i o LOT LOT COVER E at 3ow A a ER SLOT COVER SLOT COVER 35 oO m fol Q SLOT 4 5078 12 Access to Analog Buses shown with cover installed For pinout see page 4 Module installed in slot 1 Slot identifier Module ground screw Slot cover over slot 2 AC power connector LAN connector 10Base T 100Base Tx USB 2 0 connector External trigger input For pinout see page 4 Internal DMM option mark If you ordered the internal DMM option the circle is marked black IEEE 488 2 GPIB Connector Chassis ground screw 34980A User s Guide 3 1 Introduction to the 34980A Rear Panel Connector Pinouts External Trigger Input Connector Male D Sub o a L Input 2 Ext Trig Input Pin 6 5V _ oV Gnd Pin 9 7 ma
10. Trigger Out The DAC module can source a TTL level Trigger Out Trigger Out has a pulse width between 5 and 10 us 187 9 4 Channel Isolated D A Converter with Waveform Memory Module The line between external Trigger Out and external Trigger In is shared You can use the external Trigger Out to provide the external Trigger In signal However both a user supplied external trigger and the 34951A Trigger Out cannot drive the line at the same time Auto Calibration The 34951A features auto calibration auto cal Upon receipt of the CALibration MODule command you can adjust all four channels of the DAC module The adjustments performed under complete control of the 34980A require approximately one minute per module WARNING Because the auto cal uses the internal DMM do not route signals on ABus1 when performing an auto cal of a DAC module Do not apply a signal to ABus1 via the Analog Bus connector on the rear of the mainframe pins 4 5 and 9 The auto cal will abort if a signal is detected on 1 Before performing an auto calibration be sure to allow a one hour warm up of the DMM and 34951A module The adjustment is valid for 90 days for temperatures within 5 C of the auto cal temperature For the calibration constants to be saved calibration security must be off Otherwise the new calibration constants can be used while power is on But when power is lost the DAC module will revert to using the previou
11. Use the knob to scroll through the revision numbers for the mainframe internal DMM and each installed module Remote Interface Operation Use the following command to read the mainframe firmware revision numbers be sure to dimension a string variable with at least 72 characters IDN The above command returns a string in the form AGILENT TECHNOLOGIES 34980A Serial Number m mm b bb f ff d dd m mm Mainframe revision number b bb Boot code revision number fff Front panel revision number d dd Internal DMM revision number Use the following command to read the firmware revision number of the module in the specified slot be sure to dimension a string variable with at least 73 characters SYSTem CTYPe slot This command returns a string in the form AGILENT TECHNOLOGIES Model Number Serial Number Firmware Rev 0 is always returned for the Serial Number field The Firmware Revision has the form R RR and indicates the revision of firmware currently in use on the specified module 34980A User s Guide Features and Functions 2 Product Firmware Updates As new product features and enhancements become available you can easily update your mainframe firmware to ensure optimum compatibility The latest firmware updates are available from the Agilent 34980A product page at www agilent com find 34980a go to Software amp Firmware Downloads Instrument State Storage The instrument has
12. 55 se 57 a 5o 60 ha oOOOOOO0O00000 s x eooooooooooQ oOOOOOOO0O000008 A OOooOooooOooooOoQo dite oo as os osos 2s e1 e2 es 6 5 66 67 es e9 70 n L L C m d 1 32 53 34 35 36 37 38 39 40 L 71 72 73 74 75 76 77 78 79 80 m id J ooooooooooOoOQg oOoooooooOooooOQ uU I 1 V 120 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34924A 70 Channel Reed Multiplexer 34980A User s Guide The high density 34924A 70 Channel Reed Multiplexer 70 Ch Reed MUX is divided into two banks with 35 non latching reed switches channels 1 35 and 36 70 in each This module also contains eight armature Analog Bus relays channels 911 914 and 921 924 four on each bank that can connect the bank relays to the system Analog Buses Through ABusl and ABus2 you can connect any of the channels to the system DMM for voltage or resistance measurements See the simplified schematic on page 123 Using program commands or the mainframe front panel you can control each of the channel switches individually and thus configure this module in the modes listed below two independent 35 channel 2 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Buses one 70 channel 2 wire MUX You must use external wiring or connect through the internal Analog Buses for this configuration one 35 channel 4 wire MUX This configuration requi
13. For example channel 218 represents Matrix 2 row 1 and column 8 See the simplified schematic on page 159 In 1 wire mode you can close no more than 40 channels simultaneously due to power dissipation For example with one Analog Bus relay closed you can close up to a maximum of 39 channel relays If you try to close more than the allowed number of channels you will receive an error message You can connect any combination of inputs and outputs at the same time However only Matrix 3 and Matrix 4 in 1 wire mode of this module connect to the Analog Buses By closing channels 921 and 922 you can connect rows 1 and rows 2 respectively to the internal DMM of the 34980A mainframe for voltage and resistance measurements You can connect multiple matrix modules externally and or through the Analog Buses for applications that require large matrices For information on linking multiple matrix modules refer to page 142 of this chapter When the power is off matrix relays and Analog Bus relays open 34980A User s Guide 34933A Simplified Schematic for Two Wire Mode Matrix Switch Modules NOTE Matrix relays Reed non latching Analog Bus relays Armature NOTE Although columns are numbered the same on the two matrices they are electrically NOTE Resistors shown Matrix 1 non latching Col1H Col 1L Col 2H Col 2L Col 8H Col 8L C1H C2H C2
14. The calibration message is stored in non volatile memory in the mainframe a digital module or the internal DMM and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt CALIBRATE gt CAL MESSAGE Remote Interface Operation The following example shows how to store a message in calibration memory on the module in slot 3 CAL STRING CAL 21 NOV 2005 3 73 2 Features and Functions Remote Interface Configuration 74 This section gives information on configuring the instrument for remote interface communication For more information on the SCPI commands available to program the instrument over the remote interface see the Programmer s Reference Help file included on the Agilent 34980A Product Reference CD ROM The CD ROM is located inside the rear cover of this manual The Agilent 34980A supports GPIB USB and LAN interfaces All three interfaces are enabled at power on The corresponding front panel annunciator turns on whenever there is activity on the remote interface GPIB Interface You need only set the GPIB address for the instrument and connect it to your PC using a GPIB cable sold separately USB Interface There is nothing to configure on your instrument for a USB connection Just connect the instrument to your PC using a USB 2 0 cable sold separately LAN Interface By default DHCP is enabl
15. The important differences between the two RF MUX modules lie in their characteristic impedance and their use of connectors The 34941 the 50 0 version uses SMA connectors The 34942A the 75 Q variation uses Mini SMB connectors Both the 34941A and 34942A modules contain four banks of latching switches Each bank consists of three form C relays See the simplified schematic on page 179 The RF MUX modules do not connect to the analog buses Instead all signal connections are made through the visible connectors via external cables Each visible connector on an RF MUX module is labeled with a number 11 through 44 that represents a channel you can close program a tic ally from the front panel or with the Web UI When you close a channel on the RF MUX modules you automatically close all relays that create a direct path to the Common of a bank With RF MUX switches you cannot open switches program a tic ally You can only close a channel When you close one channel another channel automatically opens Therefore only one channel relay in each bank is closed at any time Each bank is chassis grounded Alternatively you can easily isolate a bank from other banks and from chassis ground as well Refer to page 177 for instructions to install insulating washers You can connect the banks in this modules and to banks in other RF MUX modules to create a larger switching configuration For example you can create up to 1x97 RF MUX in a sing
16. Therefore you can wire the same matrix rows in two locations 152 This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays which are on Matrix 2 are open and disconnected from the Analog Buses See page 138 for further information The 34980A Product Reference CD shipped with the instrument contains a the 34932T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format MATRIX CHANNEL 4X8 gt 1 _ lt v x 4 x 4 X 16 3 C1 C16 C10 C11 ci2 H L H L C14 C15 ct6 Although columns are numbered the same on the two matrices they are electrically separate example C13 34980A User s Guide Matrix Switch Modules 5 34933A Dual Quad 4x8 Reed Matrix 34980A User s Guide Using program commands or the front
17. This feature is available from the remote interface only CAUTION The Safety Interlock feature is implemented in hardware on the modules and cannot be circumvented Regardless of whether the simulation mode is enabled or disabled all Analog Bus connections are prohibited as long as no terminal block or properly wired cable is connected to the module The simulation mode applies to the entire mainframe and cannot be selectively used on individual modules When the simulation mode is enabled the Analog Bus relays will appear to close and open as directed For example no errors are generated if you close an Analog Bus relay from the front panel remote interface or Web Interface However remember that the Safety Interlock feature prevents the actual hardware state of the Analog Bus relays from being changed When you connect a terminal block or cable to the module the Analog Bus relays will be closed The simulation setting is stored in volatile memory and will be lost when power is turned off To re enable the simulation mode after power has been off you must send the command again Remote Interface Operation SySTem ABUS INTerlock SIMulate OFF ON 34980A User s Guide Features and Functions 2 User Defined Channel Labels You can assign user defined labels to any channel including Analog Bus channels on the multiplexer and matrix modules User defined channel labels are available for identification purposes only and cannot b
18. command syntax for remote interface programming Braces enclose the parameter choices for a given command string The braces are not sent with the command string A vertical bar separates multiple parameter choices for a given command string Triangle brackets lt gt indicate that you must specify a value for the enclosed parameter The brackets are not sent with the command string e Some parameters are enclosed in square brackets This indicates that the parameter is optional and can be omitted The brackets are not sent with the command string If you do not specify a value for an optional parameter the instrument chooses a default value Rules for Using a Channel List Many of the SCPI commands for the 34980A include a channel list parameter which allows you to specify one or more channels From the remote interface the channel number has the form sccc where s is the mainframe slot number 1 through 8 and ccc is the channel number You can specify a single channel multiple channels or a range of channels The following command closes channel 10 on the module in slot 3 ROUT CLOS 93010 The following command closes channels 10 12 and 15 on the module in slot 2 ROUT CLOS 2010 2012 2015 The following command closes channels 5 through 10 slot 1 and channel 15 slot 2 When you specify a range of channels any channels that are invalid will be ignored no error will be generate
19. gt 1us Analog Bus Connector Female D Sub ANALOG BUSSES N Current I Pin 5 ABus1 LO Pin 4 ABus2 LO Pin 3 ABus3 LO Pin 2 ABus4 LO Pin 1 1 HI Pin 9 2 HI Pin 8 ABus3 HI Pin 7 4 HI Pin 6 4 34980A User s Guide Introduction to the 34980 1 Annunciator Display Indicators 3C 34980A Muttsunetien Unk GGG SRRRRRERERERER REED ESEEEEEEEEEEEEEE Display Indicator LAN USB GPIB ABUS 1234 Rmt Safety Interlock Trig MOT ALARM H1234L Bell Symbol Mx B AW 0 left side of display 34980A User s Guide Ci rnm A BUS ALARM CHANNEL ian usp i234 Rmt Trig 12 41 MxtB 4w oc Definition Communicating with the 34980A over LAN Communicating with the 34980A over USB Communicating with the 34980A over GPIB Analog Bus Connectivity Normally designated ABus connected on any module in mainframe During scan if ABus 1 and ABus 2 are indicated they will be used at some point during the scan An error has been generated and is in the error queue Remote Running a program puts the display into remote and disables the front panel keys Pressing the LOCAL button takes you out of remote mode and enables the front panel keys ABus safety interlock Terminal block or cables have been removed from the D sub connector of a module For more information see page
20. or after an Instrument Preset SYSTem PRESet command 34980A User s Guide Features and Functions 2 You can display a message on the front panel by sending a command from the remote interface The instrument can display up to 18 characters on the upper line of the front panel display any additional characters are truncated no error is generated You can use letters A Z numbers 0 9 and special characters like Q etc Use the character to display a degree symbol Commas periods and semicolons share a display space with the preceding character and are not considered individual characters While a message is displayed on the front panel readings from a scan or monitor are not sent to the front panel display Sending a text message to the display overrides the display state this means that you can display a message even if the display is turned off In addition pressing any front panel key will clear the text message Remote Interface Operation The following command turns off the front panel display DISPLAY OFF The following command displays a message on the front panel and turns on the display if currently disabled the quotes are not displayed DISPLAY TEXT SCANNING To clear the message displayed on the front panel without changing the display state send the following command DISPLAY TEXT CLEAR Front Panel Number Format 34980A User s Guide The instrument can
21. 08 See the simplified schematic on page 155 You can connect any combination of inputs and outputs at the same time However only Matrix 2 in 2 wire mode of this module connects to the Analog Buses By closing channels 921 and 922 you can connect rows 5 and 6 respectively to the internal DMM of the 34980A mainframe for voltage and resistance measurements In 2 wire mode you can close no more than 20 channels simultaneously due to power dissipation However note that Analog Bus relays count half as much as channel relays in that total For example with one Analog Bus relay closed you can close up to a maximum of 19 channel relays If you try to close more than the allowed number of channels you will receive an error message 153 5 154 Matrix Switch Modules One Wire Mode To physically configure the module in 1 wire mode use the 34933T 002 terminal block or a compatible standard or custom cable If using a standard or custom cable make sure you connect interlock pins 17 and 33 on the Matrix 2 D sub connector Refer to the pinout drawing and table on page 160 In 1 wire mode the 34933A module contains four matrices 1 through 4 each with 32 1 wire crosspoint non latching reed relays organized in a 4 row by 8 column configuration Every row and column has one wire each Each crosspoint relay has a unique channel number representing the matrix and the single wire row and column that intersect to make the crosspoint
22. 16 V 20 mA 32 DIO channels 42 V 400 mA 2 channel DAC 12 V 10 mA 28 channels 100 V rms or DC 60 VA per channel 4 channels 100 V rms or 30 VDC 5A 150 VA per channel 20 channels 100 V rms or 30 VDC 5 A 150 VA per channel Four channels 30 V 0 5 A 10 W per channel Dual channel 7 V 1 W per channel 4 GHz or 20 GHz Triple channel 7 V 1 W per channel 4 GHz or 20 GHz 4 channels 16 V 20 mA 32 DIO channels 42 V 400 mA 2 channel DAC 12 V 10 mA Pollution Degree 1 No pollution or only dry non conductive pollution occurs The pollution has no influence on insulation IEC 61010 1 2nd Edition Pollution Degree 2 Normally only non conductive pollution occurs Occasionally a temporary conductivity leakage current between isolated conductors caused by condensation can be expected IEC 61010 1 2nd Edition CAUTION For proper module cooling all unused slots must be covered Electrical Operating Conditions To avoid electric shock turn off the 34980A and disconnect or de energize all field wiring to the modules and the Analog Bus connector before removing any module or slot cover 34980A User s Guide 93 3 94 Introduction to the Plug In Modules for the 34980A Transients The 34921A 34922A 34923A 34924A 34925A 34931A 34932A 34933A 34937A and 34938A modules are designed to safely withstand occasional transient overvoltages up to 1000 Vpeak Typically the
23. 92 RE Agilent Technologies 3 Introduction to the Plug In Modules for the 34980A Slot and Channel Addressing Scheme The eight module slots in the 34980A are arranged as shown below Slot number designations stor SLOTS N of Jo of Jo Sl SLOT COVER Io S o Jor a Je SI A Taree m a H HIE HO usses SLOT COVER SLOT COVER AOS i lU i 2 IN A ON SLOT COVER SLOT COVER e SLOT COVER SLOT COVER a 28 SLOT 4 The slot and channel addressing scheme for the 34980A follows the form sece where s is the mainframe slot number 1 through 8 and ccc is the three digit channel number Note that MUX channels numbers are derived differently from matrix modules and channel numbers for matrix modules are derived differently between 1 wire and 2 wire configuration modes Displayed Number 1014 3921 5304 2437 Means This A MUX module is in slot 1 channel of interest is 14 This channel is la
24. BANK 2 ooooooooooooQ 31 32 33 34 HOLT HL HL l L 3NV8 ooooooooOooooO0Q 34980A User s Guide 117 4 Low Frequency Multiplexer Switch Modules 34923A Simplified Schematic for One Wire Mode This drawing shows two independent 40 channel 1 wire MUXes To change configuration modes use the SYSTem MODule WIRE MODE command NOTE The three digit number assigned to each switch represents the channel number NOTE Bank relays Reed non latching Analog Bus relays Armature non latching 118 Bank 1 001 gt 01 7 H on 087 002 00 012 0 022 e 032 o 003 lt 013 672 023 0383 004 o o 014 77 024 7 034 7 1000 1002 ANN 1000 041 e 7 051 0 061 0 071 o L 042 o 052 062 0 072 COM 2 043 053 063 o o 073 s 044 o o 054 007 064 074 e 045 v 055 7 06567 075 s 7 046 o 0564 7 gt 066 076 o o 042 Oe o TF 077 __ 04860 058 0686 078 049 059 0696 0796 050__ 060 ar 070__ 080 Bank2 34980A User s Guide Low Frequency Multiplexer Switch Modules 34923A D Sub Connectors f
25. Channel Isolated D A Converter with Waveform Memory Module 186 The 34951A 4 Ch Isolated D A module DAC module has four independent isolated DAC channels that output DC voltage up to 16V or DC current up to 20 mA Since the DACs are electrically isolated you can stack or combine multiple DACs to have up to 64 V on a module You can control each channel manually or use the onboard memory to store multiple sequenced points Level Output Mode The module can generate voltages between 16 V DC and 16 v DC at 500 uV resolution on any or all four channels Each channel configured for voltage output has hardware remote sensing capability to ensure that an accurate voltage is present at the load With the remote sensing feature the DAC channel outputs an additional voltage to compensate for the voltage drop in the test leads Thus using the sense connections the load voltage equals the programmed voltage as long as the resistance in each sense lead is less than 2 50 and the maximum voltage drop in the output leads is 0 5 volts To ensure that an accurate voltage is present at the loads it is recommended that you use remote sensing However if remote sensing is not used do not connect loads or cables to the remote sensing terminals H Sense and L Sense When using the remote sensing feature connect sense wires from the load to the High Sense and Low Sense terminals for the desired channels Each channel can also generate curren
26. MEAS 4 4 4 4 2 L J DMM L 4 rm o SENS H H bs L 4 4 age cee 923 H H 4 o Qo L 4 gt sai 924 NOTE Although columns are numbered the same on the two matrices they are electrically separate NOTE Matrix relays Armature latching Analog Bus relays Armature non latching 34980A User s Guide 145 5 Matrix Switch Modules 34931A D Sub Connectors Matrix 1 Matrix2 o Matrix 1 For orientation the D sub connector end of the module is facing you NC NC R4L C5H C5L NC NC NC NC NC NC NC NOTE In this diagram and the table below R represents row and C NC NC NC NC NC C2H NC NC R2H C8H GND represents column 6 OC 6 6 O0 9o e Q9 NC C3H C3L C1H CIL R3L C6H C6L NC NC NC NC NC NC RIH RIL 9 90 Q9 060 6 9000 Description Description Description C7H RIL 50 C7L 14 R2H 27 C8H 29 R2L 28 C8L 30 R3H 39 GND 33 R3L 40 No Connect pins R4H 3 4 9 12 15 22 RAL 25 26 31 32 34 37 43 48 38 Matrix 2 C4L NC NC R8H R8L C5H CSL NC NC NC NC C7H NC Interlock 9 oO 99 e 9 O9 0e 0 o NC NC NC NC NC C2H NC NC R6H R6L C8H
27. Reserved 48 25H 13 Reserved 49 25L 14 Reserved 50 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34923T 001 Terminal Block for Two or Four Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34923T 001 terminal block that corresponds to the 2 or 4 wire configuration mode An error will not be generated if you have installed a terminal block that doesn t match the present module configuration The 34980A Product Reference CD shipped with the instrument contains a the 34923T 2 wire mode Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format ro OOOOOOOO00000 cj 2 22 23 24 25 JH L H L H L H L 27 28 29 30 th th OOOOOOO00000 gt B
28. This feature is available from the remote interface only If you change the Domain Name you must cycle power on the 34980A to activate the new setting If Dynamic Domain Name System DNS is available on your network and your instrument uses DHCP the Domain Name is registered with the Dynamic DNS service at power on If DHCP is enabled the DHCP server can change the specified Domain Name The Domain Name is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Remote Interface Operation SYSTem COMMunicate LAN DOMain lt name gt 34980A User s Guide 83 2 Features and Functions Factory Reset State The following tables show the state of the instrument after a RST or SYSTem CPON command is executed Measurement Configuration Factory Reset State Function DC Volts Range Autorange Resolution 5 Digits Integration Time 1 PLC Input Resistance 10 MQ fixed for all DCV ranges Channel Labels No Change Channel Delay Reading Format Sample Count Automatic Delay Reading Only no units channel time 1 Sample per Trigger Trigger Count 1 Trigger Trigger Delay Automatic Delay Trigger Source Immediate Scanning Operations Factory Reset State Scan List Empty Reading Memory Min Max and Average All Readings are Cleared All Statistical Data is Cleared Sweep Count 1 Sweep T
29. Wire Versus 1 Wire Mode 27 Analog Bus and Internal DMM Considerations Environmental Operating Conditions 28 Electrical Operating Conditions 29 28 4 Temperature Measurement Configuration 30 Measurement Units 30 Thermocouple Measurements 31 RTD Measurements 33 Thermistor Measurements 34 Voltage Measurement Configuration 35 DC Input Resistance 35 AC Low Frequency Filter 36 Resistance Measurement Configuration 37 Offset Compensation 37 Current Measurement Configuration 38 AC Low Frequency Filter 38 Frequency Measurement Configuration 39 Low Frequency Timeout 39 Mx B Scaling 40 Scanning 42 Rules for Scanning 42 Adding Channels to the Scan List 44 Scan Trigger Source 46 Trigger Count 49 Sweep Count 50 Sample Count 51 Channel Delay 53 Automatic Channel Delays 54 Reading Format 56 Non Sequential Scanning 57 Viewing Readings Stored in Memory 58 Monitor Mode 60 34980A User s Guide System Related Operations 62 Firmware Revision 62 Product Firmware Updates 63 Instrument State Storage 63 Error Conditions 64 Self Test 66 Front Panel Display Control 66 Front Panel Number Format 67 Real Time System Clock 68 Relay Cycle Count 68 SCPI Language Version 69 Calibration Overview 70 Calibration Security 70 Calibration Count 72 Calibration Message 73 Remote Interface Configuration 74 GPIB Interface 75 USB Interface 75 LAN Interface 75 Factory Reset State 84 Instrument Preset State 86 3 Introduction to the Pl
30. and Y1142A the solder cup connection kits provide connection components for custom cabling Fifty pin D sub connector is 125 V rated and 78 pin D sub connector is 60 V rated Y1139A Y1140A Y1141A and Y1142A Y1135 Y1136 Y1137 and Y1138 34980A User s Guide 91 3 Module Considerations 92 Introduction to the Plug In Modules for the 34980A This section lists important items and actions that can affect the operation of your modules General Considerations To reduce wear on the internal DMM relays wire ike functions on adjacent channels Environmental Operating Conditions These modules are designed to operate in a temperature range of 0 C to 55 C with non condensing humidity The maximum humidity is 80 at 40 C or higher Do not use in locations where conductive dust or electrolytic salt dust may be present These modules should be operated in an indoor environment where temperature and humidity are controlled Condensation can pose a potential shock hazard Condensation can occur when the modules are moved from a cold to a warm environment or if the temperature and or humidity of the environment changes quickly The following table shows maximum voltage ratings for each module If conditions change ensure that condensation has evaporated and the instrument has thermally stabilized until pollution degree 1 conditions are restored before turning on power to the equipment Module Pollution
31. expressed with care as most web software on the computer will interpret byte values with leading zeros as octal numbers For example 255 255 020 011 is actually equivalent to decimal 255 255 16 9 not 255 255 20 11 because 020 is interpreted as 16 expressed in octal and 011 as 9 To avoid confusion use only decimal expressions of byte values 0 to 255 with no leading zeros For example the 34980A assumes that all dot notation addresses are expressed as decimal byte values and strips all leading zeros from these byte values Thus attempting to set an IP address of 255 255 020 011 will become 255 255 20 11 a purely decimal expression Be sure to enter the exact expression 255 255 20 11 in your computer web software to address the instrument Do not use 255 255 020 011 the computer will interpret this address differently due to the leading zeros The DNS address is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP OFF gt AUTO IP OFF gt DNS SERVER Remote Interface Operation SYSTem COMMunicate LAN DNS address 82 34980A User s Guide Features and Functions 2 Domain Name A domain name is a registered name on the Internet which is translated into an IP address
32. for the channel 201 relay of a module installed in slot 6 DIAGnostic RELay CYCLes 6201 Example Clearing the cycle countforarelay The following command resets the cycle count on the channels 201 and 202 for a module in slot 1 DIAGnostic RELay CYCLes CLEar 1201 1202 Example Resetting Module s to Power On State The following command resets a module in slot 4 to its power on state SYSTem CPON 4 Installing SMA Connectors 34980A User s Guide When installing SMA connectors it is recommend that you tighten them to 0 8 1 1 Nm 7 10 in Ibs of torque 183 8 Dual Triple Microwave Switch Modules 34946A and 34947A Simplified Schematics The following drawings show the channel configuration for the 34946A and 34947 A modules respectively 500 500 500 i ES 34946A Dual 1x2 SPDT Terminated Microwave Switch 3X 34947A 1x2 SPDT Unterminated Microwave Switch 184 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 34951A 4 Channel Isolated D A Converter with Waveform Memory Module 186 34951A SCPI Programming Examples 189 34951A Simplified Schematics 193 34951A D Sub Connector Pinout 194 34951T Terminal Block 195 RE Agilent Technologies 185 9 4 Channel Isolated D A Converter with Waveform Memory Module 34951A 4
33. have been detected A record of up to 20 errors can be stored in the instrument s error queue Each remote interface I O session i e GPIB USB LAN etc has its own interface specific error queue Errors appear in the error queue of the I O session that caused the error the front panel reports errors from all I O sessions For a complete listing of the error messages see the Agilent 34980A Programmer s Reference Help file located on the Product Reference CD ROM The CD ROM is located inside the rear cover of this manual The instrument beeps once each time a command syntax or hardware error is generated A special global error queue holds all power on and hardware related errors e g over temperature Safety Interlock etc 34980A User s Guide 34980A User s Guide Features and Functions 2 Errors are retrieved in first in first out FIFO order The first error returned is the first error that was stored Errors are cleared as you read them Once you have read all of the interface specific errors the errors in the global queue are retrieved Errors are cleared as you read them When you have read all errors from the interface specific and global error queues the ERROR annunciator turns off and the errors are cleared If more than 20 errors have occurred the last error stored in the queue the most recent error is replaced with 350 Error queue overflow No additional errors are stored until you remove error
34. have only one channel per bank closed at a time The following command closes then automatically opens each channel from 1 19 Bank 1 in succession leaving channel 20 closed Then the command continues closing and opening channels 21 to 39 Bank 2 then leaving channel 40 closed At the end only channels 20 and 40 will be closed while all other channels will have been closed and then opened In this process a channel will open before the next channel in succession closes making this a break before make series ROUTe CLOSe 3001 3040 The following command opens the closed channel on Bank 1 of a FET MUX module in slot 3 and closes channel 15 on that bank ROUTe CLOSe 3015 34980A User s Guide 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 Example Closing and opening Analog Bus relays The following command connects the Analog Buses to Bank 1 via the Analog Bus relays on Bank 1 for a module in slot 3 ROUTe CLOSe 3911 3912 3913 3914 ROUTe OPEN 3911 3912 3913 3914 The Analog Bus relays numbered s911 s912 s913 etc on the MUX modules are ignored if they are included in a range of channels An error will be generated if an Analog Bus relay is specified as the first or last channel in a range of channels For example the following command closes all valid channels between channel 30 slot 1 and channel 5 slot 2 In addition this command closes Analog Bus relay 911 on the module i
35. mainframe Safety Interlock Analog Buses of the 34980A can carry 300 V signals MUX and matrix modules with Analog Bus relays have a hardware Safety Interlock feature that forces Analog Bus relays open when their associated D sub connector faceplate interlock pins lose continuity This prevents signals from the Analog Buses from being present on D sub connector pins Optional Agilent terminal blocks automatically provide continuity for the interlock pins When the terminal blocks are not used you must provide continuity for the interlock pins in the DUT assembly See pinout drawings and tables in this chapter for the location of interlock pins on the module of interest MUX modules with Analog Bus connections have Analog Bus relays on each of their two banks Therefore the interlock pins are found on both Bank 1 and Bank 2 D sub connectors of the MUX modules Normally if you attempt to connect to the Analog Buses without a terminal block or cable connected an error is generated The SYSTem ABUS INTerlock SIMulate command allows you to temporarily disable errors generated by the Safety Interlock feature and enables the Safety Interlock simulation mode Although Safety Interlock errors are suppressed in this mode the actual Analog Bus relays affected by the Safety Interlock are disabled as long as no terminal block or cable is connected to the module 96 34980A User s Guide Measurement Functions for the MUX Modules Low Frequency Mul
36. module After setting the desired level send the OUTPut STATe command to close the corresponding output relay and enable outputs from the specified channels The following command outputs 5 mA on DAC channels 1 and 2 for a module in slot 4 and closes the output relay SOURce CURRent 5E 3 94001 4002 OUTPut STATe ON 94001 4002 Waveform Mode Example Downloading a waveform to memory and outputting waveform from DACs The following command segment downloads a 1000 point sine waveform to memory on the module in slot 4 and outputs the waveform from DAC channels 1 and 2 The trace name is TEST SINE TRACe FUNCtion 4 SINusoid TEST SINE 1000 SOURce FUNCtion TRACe TEST SINE 4001 4002 OUTPut STATe ON 4001 4002 SOURe FUNCtion ENABle ON 4001 4002 189 9 190 4 Channel Isolated D A Converter with Waveform Memory Module Example Downloading trace points to memory and outputting waveform from DACs The following command segment downloads seven trace points to memory on the module in slot 4 and output the waveform from DAC channels 1 and 2 The trace name is NEG RAMP TRACe DATA 4 NEG RAMP 1 67 33 0 33 67 1 SOURce FUNCtion TRACe NEG RAMP 4001 4002 OUTPut STATe ON 4001 4002 SOURe FUNCtion ENABle ON 4001 4002 Example Setting the amplitude of a waveform for offset and gain The following commands set the offset to 5 25 and the gain to 1 5 on DAC channels 1 and 2 of a module in slo
37. 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 Additional Safety Notices The following general safety precautions must be observed during all phases of oper ation of this instrument Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Agilent Technologies assumes no liability of the customer s failure to com ply with the requirements General Do not use this products in any manner not specified by the manufacturer The protec tive features of this product may be impaired if it is used in a manner not speci fied in the operation instructions Before Applying Power Verify that all safety precautions are taken Make all connections to the unit before applying power Ground the Instrument This product is provided with protective earth terminals To minimize shock hazard the instrument must be connected to the ac power mains through a grounded power cable with the ground wire firmly con nected to an electrical ground safety ground at the power outlet Any interrup tion of the protective grounding conduc tor or disconnection of
38. on contacting Agilent in your country of specific location You can also contact your Agilent Technologies Representative DECLARATION OF CONFORMITY 5 17 Agilent Technologies according to ISO IEC Guide 22 and CEN CENELEC EN 45014 Manufacturer s Name Agilent Technologies Incorporated Manufacturer s Address 815 14 St SW Loveland CO 80537 USA Declares under sole responsibility that the product as originally delivered Product Name Multifunction Switch Measure Unit Model Number 34980A 34921A T 34922A T 34923A T 34925A T 34931A T 34932A T 34933A T 34937A T 34938A T 34941A 34946A 34947A 34951A T 34952A T Product Options This declaration covers all options of the above products complies with the essential requirements of the following applicable European Directives and carries the CE marking accordingly Low Voltage Directive 73 23 EEC amended by 93 68 EEC EMC Directive 89 336 EEC amended by 93 68 EEC and conforms with the following product standards EMC Standard Limit IEC 61326 1 1997 A1 1998 EN 61326 1 1997 A1 1998 CISPR 11 1990 EN 55011 1991 Group 1 Class A IEC 61000 4 2 1995 A1 1998 EN 61000 4 2 1995 4kV CD 4kV AD IEC 61000 4 3 1995 EN 61000 4 3 1995 3 V m 80 1000 MHz IEC 61000 4 4 1995 EN 61000 4 4 1995 0 5 kV signal lines 1 kV power lines IEC 61000 4 5 1995 EN 61000 4 5 1995 0 5 kV line line 1 kV line ground IEC 61000 4 6 1996 EN 61000 4 6 1
39. show numbers on the front panel display with periods or commas for the decimal point radix and thousands separator This feature is available from the front panel only The number format is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command When shipped from the factory a period is used as the radix character and commas are used for the digits separator e g 1 234 56 VDO Front Panel Operation Utility gt MISC SETTINGS gt RADIX THOUSAND SEPARATOR 67 2 Features and Functions Real Time System Clock During a scan the instrument stores all readings and alarms with the current time and date based on a 24 hour clock When shipped from the factory the instrument is set to the current time and date for Greenwich Mean Time GMT The clock setting is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt DATE TIME Remote Interface Operation The following commands show how to set the time and date SYST TIME 15 30 23 000 Set time to 3 30 23 000 PM SYST DATE 2004 11 24 Set date to November 21 2004 Relay Cycle Count The instrument has a Relay Maintenance System to help you predict relay end of life The instrument counts the cycles on
40. slot 4 for 1 wire measurements Because you can configure only the 34933A and the 34923A and 34925A MUX modules for either 2 wire or 1 wire mode an error is generated if you send this command to a slot that does not contain one of those three modules If you are using terminal blocks with the 34933A module be sure to use the corresponding 2 wire or 1 wire terminal block SYSTem MODule WIRE MODE WIRE1 4 When using a command to configure the system the new configuration does not take effect until you cycle power on the 34980A Example Querying the system for module Identify The following command returns the identity of the module installed in slot 7 SYSTem CTYPe 7 For the 34933A matrix module the query response may include a suffix to indicate a 1 wire configuration For example the response for the 34933A will be either 34933A differential mode or 34933A 1W single ended mode Reading Cycle Count and Resetting Modules to Power On State Example Reading the cycle count for a relay The following command returns the cycle count on channels 304 and 308 for a matrix module in slot 3 DIAGnostic RELay CYCLes 3304 3308 Example Resetting module s to power on state The following command resets a module in slot 4 to its power on state SYSTem CPON 4 141 5 142 Matrix Switch Modules Linking Multiple Matrix Modules You can link multiple matrix modules to form a larger matrix The following two drawing
41. the internal DMM For 4 wire measurements specify the paired channel in Bank 1 source as the ch list channel channels in Bank 2 are not allowed in the ch list 37 2 Features and Functions Current Measurement Configuration 38 This section contains information to help you configure the instrument for making current measurements on the 34921A multiplexer module The module has four fused channels for direct dc and ac current measurements on the ranges shown below 10mA 100 mA 1A Autorange Current measurements are allowed only on channels 41 through 44 on the 34921A module AC Low Frequency Filter The instrument uses three different ac filters which enable you to either optimize low frequency accuracy or achieve faster ac settling times The instrument selects the slow 3 Hz medium 20 Hz or fast 300 Hz filter based on the input frequency that you specify for the selected channels or the internal DMM Applies to ac current and ac voltage measurements only AC low frequency filter Input Frequency Default Settling Delay Minimum Settling Delay 3 Hz to 300 kHz Slow 7 seconds reading 1 5 seconds 20 Hz to 300 kHz Medium 1 second reading 200 ms 200 Hz to 300 kHz Fast 0 12 seconds reading 20 ms The CONFigure and MEASure commands automatically select the 20 Hz medium filter The instrument selects the default 20 Hz medium filter after a Factory Reset RST c
42. uV must be taken into consideration 514 KQ or higher range used unless 100Q series resistors are bypassed on module 810 kQ or higher range used for loads over approximately 300 2 due to series resistance of FET channels Front Panel Operation DMM or Channel Configure gt DMM MEASUREMENT Use the knob or numeric keypad to select the desired channel Then select the desired measurement function for this channel You are automatically guided to the next level of the menu where you can configure other measurement parameters range integration time etc Remote Interface Operation You can select the measurement function using the CONFigure and MEASure commands For example the following command configures the specified channel for dc voltage measurements CONF VOLT DC 10 DEF 93001 34980A User s Guide Features and Functions 2 Measurement Range You can allow the instrument to automatically select the measurement range using autoranging or you can select a fixed range using manual ranging Autoranging is convenient because the instrument decides which range to use for each measurement based on the input signal For fastest scanning operation use manual ranging on each measurement some additional time is required for autoranging since the instrument has to make a range selection Autorange thresholds Down range at lt 10 of range Up range at gt 120 of range If the input signal is greater than can be me
43. 0 9 or the underscore character Blank spaces are not allowed You do not have to use all 12 characters but the first character must always be a letter To Unsecure the Instrument for Calibration You can unsecure the instrument from either the front panel or over the remote interface The instrument is secured when shipped from the factory Once you enter a security code that code must be used for both front panel and remote operation For example if you secure the instrument from the front panel you must use that same code to unsecure it from the remote interface Front Panel Operation Utility gt CALIBRATE gt UNSECURE Remote Interface Operation To unsecure the instrument send the following command the factory security code is shown CAL SECURE STATE OFF AT34980 70 34980A User s Guide Features and Functions 2 To Secure the Instrument for Calibration You can secure the instrument either from the front panel or over the remote interface The instrument is secured when shipped from the factory Once you enter a security code that code must be used for both front panel and remote operation For example if you secure the instrument from the front panel you must use that same code to secure it from the remote interface Front Panel Operation Utility gt CALIBRATE gt SECURE Remote Interface Operation To secure the instrument send the following command the factory security code is shown CAL SEC
44. 14C 10C 6C GND Q9 C9 G G C D G9 9 G 9 9 9 GND 11NO 11NC 7NC 3NC 12NC 8NC 4NC 1NC 13NC 9NC 5NC 2NC 14NC 10NC 6NC 6NO G9 9 G 9 9 9 9 C9 9 9 9 C9 9 Channel Channel 1 NC 4 NC 7 NC 10 NC 13 NC 30 NO 1 Common 25 4 Common 7 Common 10 Common 13 26 30 Common 16 1NO 8 4 NO 7 NO 10 NO 13 NO 9 Reserved 18 2 NC 46 5 NC 8 NC 11 NC 14 NC 47 GND 33 2 Common 29 5 Common 8 Common 11 Common 14 30 GND 34 2 NO 12 5 NO 8 NO 11 NO 14 NO 13 No Connect 17 3 NC 38 6 NC 9 NC 12 NC 29 NO 1 3 Common 21 6 Common 9 Common 12 Common 29 Common 2 3 NO 4 6 NO 9 NO 12 NO Bank 2 31NO 31C 21NO 17NO 26NO 22NO 18NO 15NO 27NO 23NO 19NO 16NO 28NO 24NO 32NO 32C NC Q 9 9 C9 9 Reserved 25 21C 17C 26C 22C 18 15 27 23C 19 16 28 24C 20 GND C9 CO 9 69 9 9 9 GND 25NO 25NC 21NC 17NC 26NC 22NC 18NC 15NC 27NC 23NC 19NC 16NC 28NC 24NC 20NC 20NO 6 0 9 9 02 9 0 00 9 9 18 NC 32 NO 15 Common 25 18 Common 21 Common 24 Common 27 Common 26 32 Common 16 15 NO 8 18 NO 21 NO 24 NO 27 NO 9 Reserved 18 16 NC 46 19 NC 22 NC 25 NC 28 NC 47 GND 33 16 Common 29 19 Common 22 Common 25 Common 28 30 GND 34 16 NO 12 19 NO 22
45. 3 008 013 4 018 2 1 004 __ 009 1 5 014 __ 019__ T1 0 4 2 4 o o le 005 L 010 015 4 020 L Analog Buses AW ub s n Overvoltage protection and current limiting circuitry 130 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34925A D Sub Connectors for Two or Four Wire Mode Bank1 Bank2 o Bank 1 For orientation the D sub connector end of the module is facing you COM COM ORG eG 9 7 9900660000000 0000 GND 6H 6L 16H 16L 12H 12L 8H 8L 18H 18L 10H 10L NC NC NC NC eoeogooeoeooocosoc2soeo00 safety eature Interlock 1 pins Description Description 17 and 33 on Bank 1 1 COM1H must be shorted to enable 1 2 COM1 L 8 the Bank 1 Analog Bus 2H 3 Interlock 1 17 relays to close The optional 34925T 001 for 4 Interlock i s 2 wire terminal block 3H 5 Reserved 18 shorts these pins for you 3L 6 GND 34 This feature protects 4H 9 No Connect 47 inadvertent routing of 4L 10 No Connect 48 high voltages from the 13 No Connect 49 Analog Bus to the D sub 5L 14 No Connect 50 connector of the module Bank 2 COM COM 21H 211 22H 22L 23H 23
46. 3 9 51H 511 46H 46L 52H 521 47H 47L 43H 43L 69H 691 54H 541 49H 491 55H 551 Interlock 2 amp G9 G GO G9 Go GO 9 0 9 GND 61H 61L 56H 56L 57H 57L 62H 62L 48H 48L 63H 63L 59H 59L 64H 64L 50H 50L Interlock 2 9 09 495 9 49 09 9 0 09 BORO ROR CRC RO 9 9 5 09 9 GND 67H 67L 66H 66L 68H 68L 53H 53L 58H 58L 70H 70L 65H 65L 60H 60L NC NC 9 9 2 Description Description 36H 3 COM2 9 36L 4 COM2L 10 37H 7 Interlock 2 39 37L 8 Interlock 2 59 38H 11 GND 40 38L 12 GND 60 39H 15 No Connect 77 39L 16 No Connect 78 40H 19 40L 20 41H 1 41L 2 42H 5 42L 6 WARNING As a safety feature interlock 2 pins 39 and 59 on Bank 2 must be shorted to enable the Bank 2 Analog Bus relays to close The optional 34924T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 34980A User s Guide 125 4 Low Frequency Multiplexer Switch Modules 34924T Terminal Block This terminal block with solder type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an inst
47. 4 4Common 7Common 9Common GND 33 3NO 9 5NO 7NO 9NO GND 34 3Common 10 5Common 7Common 9Common No Connect 17 Bank 2 16NO 16C 11NO 11C 17NO 17C 12NO 12C 13NO 13C 19NO 19 14NO 14C 15NO 15C NC O Q C9 C9 9 Reserved 11NO 11C 17NO 17C 12NO 12C 13NO 13 19 19C 14NO 14C 15NO 15C GND C9 GO CO 69 9 G 9 GND 16NO 16C 17NO 17C 18NO 18C 18NO 18C 19NO 19C 14NO 14C 20NO 20C 20NO 20C G G9 9 9 C9 C9 C3 9 9 9 9 11NO 13NO 15NO 17NO 19NO 11Common 4 13Common 15Common 17Common 19Common 44 11NO 19 14NO 16NO 18NO 20NO 47 11Common 20 14Common 16Common 18Common 20Common 48 12NO 7 14NO 16NO 18NO 20NO 49 12Common 8 14Common 16Common 18Common 20Common 50 12NO 23 14NO 17NO 19NO Reserved 18 12Common 24 14Common 17Common 19Common GND 33 13NO 9 15NO 17NO 19NO GND 34 13Common 10 15Common 17Common 19Common No Connect 17 172 34980A User s Guide General Purpose Switch Modules 34938T Terminal Block This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number The 34980A Product Reference CD shipped with the instrument contains a the 34938T Wiring Log for you to document your wiring co
48. 96 and page 138 Waiting for external or manual trigger during scans Over temperature condition One or more general purpose 34937A 34938A modules have reached their over temperature limits Additional functionality to be implemented Additional functionality to be implemented Scaling enabled on channel This appears on display after you select scaling function via front panel or remote interface 4 wire measurement specified on channel This appears on display after you select the 4 wire function via the front panel or remote interface Offset Compensation specified on channel This appears on display after you have selected the offset compensation function via the front panel or remote interface Measurement is in progress 1 Introduction to the 34980A Front Panel Menu Reference Store Recall This section gives an overview of the top two levels of menus that you access from the front panel The menus are designed to automatically guide you through all parameters required to configure a particular function or operation Assign a name to each storage location Recall stored states power down state factory reset state or preset state ility Ut Configure Key Group Set parameters for measurement Configure system related instrument parameters Connecting and configuring to use with LAN GPIB or USB Set the real time clock and calendar Set radix character thousand separator Enable disable the internal DMM Se
49. 996 3 V 0 15 80 MHz 80 mod IEC 61000 4 11 1994 EN 61000 4 11 1994 Interrupt 10 ms 20 ms Canada ICES 001 1998 Australia New Zealand AS NZS 2064 1 The product was tested in a typical configuration with Agilent Technologies test systems Safety IEC 61010 1 2001 EN 61010 1 2001 Canada CSA C22 2 No 61010 1 2004 USA UL 61010 1 2004 Supplementary Information This DoC applies to above listed products placed on the EU market after 9 November 2004 Date Ray Corson Product Regulations Program Manager For further information please contact your local Agilent Technologies sales office agent or distributor or Agilent Technologies Deutschland GmbH Herrenberger StraBe 130 D 71034 B blingen Germany Contents 1 Introduction to the 34980A Front Panel ata Glance 2 Rear Panel ata Glance 3 Rear Panel Connector Pinouts 4 External Trigger Input Connector Male D Sub Analog Bus Connector Female D Sub 4 Annunciator Display Indicators 5 Front Panel Menu Reference 6 Instrument Rack Mounting 7 2 Features and Functions 34980A User s Guide SCPI Language Conventions 10 Rules for Using a Channel List 10 General Measurement Configuration 12 Overview of Measurement Modes 12 Analog Buses 15 Measurement Functions 16 Measurement Range 17 Measurement Resolution 18 Custom A D Integration Time 19 Autozero 21 Trigger Delay 22 Automatic Trigger Delays 23 Safety Interlock 24 User Defined Channel Labels 25 2
50. ASure commands contain an optional parameter which allows you to specify the resolution e The instrument returns to 5 digits when the measurement function is changed and after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the resolution setting Front Panel Operation DMM or Channel Configure gt INTEGRATION gt NPLC First select the measurement function on the active channel You are automatically guided to the next level of the menu where you can select a specific resolution Remote Interface Operation Specify the resolution in the same units as the measurement function not in number of digits For example if the function is dc voltage specify the resolution in volts For frequency specify the resolution in hertz You can select the resolution using parameters in the CONFigure and MEASure commands For example the following command selects the 10 range with 4 digits of resolution on the specified channel CONF VOLT DC 10 0 001 3001 34980A User s Guide Features and Functions 2 The following command selects the 1 range with 6 digits of resolution on channel 2041 current measurements are allowed only on channels 41 through 44 on the 34921A MEAS CURR AC 1 1E 6 2041 You can also select the resolution using the SENSe commands For example the following command specifies a 2 wire ohms measurement with 1000 of r
51. Agilent 34980A Multifunction Switch Measure Unit User s Guide RE Agilent Technologies Notices Agilent Technologies Inc 2004 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or transla tion into a foreign language without prior agreement and written consent from Agi lent Technologies Inc as governed by United States and international copyright laws Manual Part Number 34980 90001 Edition First edition November 2004 Printed in Malaysia Agilent Technologies Inc 815 14th Street SW Loveland CO 80537 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 connection with the furnishing use or perfor mance 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 agreement shall contro
52. B PASSWORD menu selection from the 34980A front panel Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt WEB PASSWORD 34980A User s Guide Features and Functions 2 DHCP DHCP Dynamic Host Configuration Protocol is a protocol for automatically assigning a dynamic IP address to a device on a network DHCP is typically the easiest way to configure your instrument for remote communication using the LAN interface If you change the DHCP setting you must cycle power on the 34980A to activate the new setting When DHCP is enabled factory setting the instrument will try to obtain an IP address from a DHCP server If a DHCP server is found it will assign a dynamic IP address Subnet Mask and Default Gateway to the instrument When DHCP is disabled or unavailable the instrument will use the static IP address Subnet Mask and Default Gateway during power on If a DHCP LAN address is not assigned by a DHCP server then a static IP will be assumed after approximately 2 minutes The DHCP setting is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP Remote Interface Operation SYSTem COMMunicate LAN DHCP OFF ON IP Address An Internet Protocol IP Address is required for all IP and T
53. C8L Nc NC Interlock G9 6 OC 6 6 O0 6 9 6 6 Q9 NC C3H C3L C1H CIL R7H C6H C6L NC NC NC NC NC NC R5H RSL Q 9 9 90 Q9 000090 900 90 000 NOTE In this diagram and the table below R represents row and C represents column a Safety feature Description Description Description interlock pins 17 and 33 must be shorted to enable the Analog Bus RSL BO CL 14 relays which on Matrix 2 to close The optional 34931T terminal block R6H 27 C8H 29 shorts these pins for you This feature R6L 28 30 protects inadvertent routing of high R7H 39 Interlock 17 voltages from the Analog Buses to the R7L 40 Interlock 33 D sub connector of the module R8H No Connect pins R8L 3 4 9 12 15 16 37 e ee 31 32 CIL 38 iiid 146 34980A User s Guide Matrix Switch Modules 5 34931T Terminal Block This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays which are on Matrix 2 are open and disconnected from the Analog Buses See page 138 for further information The 34980A Product Reference CD shipped with the instrument cont
54. CP IP communications with the instrument If DHCP is enabled factory setting the specified static IP address is not used However if the DHCP server fails to assign a valid IP address the currently configured static IP address will be used If you change the IP address you must cycle power on the 34980A to activate the new setting The default IP Address for the 34980A is 169 254 9 80 34980A User s Guide 71 2 78 Features and Functions Dot notation addresses nnn nnn nnn nnn where nnn is a byte value must be expressed with care as most web software on the computer will interpret byte values with leading zeros as octal numbers For example 255 255 020 011 is actually equivalent to decimal 255 255 16 9 not 255 255 20 11 because 020 is interpreted as 16 expressed in octal and 011 as 9 To avoid confusion use only decimal expressions of byte values 0 to 255 with no leading zeros For example the 34980A assumes that all dot notation addresses are expressed as decimal byte values and strips all leading zeros from these byte values Thus attempting to set an IP address of 255 255 020 011 will become 255 255 20 11 a purely decimal expression Be sure to enter the exact expression 255 255 20 11 in your computer web software to address the instrument Do not use 255 255 020 011 the computer will interpret this address differently due t
55. Degree 1 Specifications Pollution Degree 2 Specifications 34921A 34922A 34923A 34925A 34931A 34932A 34933A 40 channels 300 V rms or DC 60 VA per channel 70 channels 300 V rms or DC 1 A 60 VA per channel 20 40 80 channels 150 Vpeak 0 5 A 10 VA per channel 40 80 channels 80 Vpeak 50 mA Dual 4x8 matrix 300 V rms or DC 1 A 60 VA per channel Dual 4x16 matrix 300 V rms or DC 1 A 60 VA per channel Dual quad 4x8 matrix 150 Vpeak 0 5 A 10 VA per channel 40 channels 100V rms or DC 60 VA per channel 70 channels 100 V 1 A 60 VA per channel 20 40 80 channels 100 Vpeak 0 5 A 10 VA per channel 40 80 channels 80 Vpeak 50 mA Dual 4x8 matrix 100 V rms or DC 1 A 60 VA per channel Dual 4x16 matrix 100 V rms or DC 1 A 60 VA per channel Dual quad 4x8 matrix 100 Vpeak 0 5 A 10 VA per channel 34980A User s Guide Module Introduction to the Plug In Modules for the 34980A 3 Pollution Degree 1 Specifications Pollution Degree 2 Specifications 34937A 34938A 34941A 34946A 34947A 34951A 34952A 28 channels 300 V rms or DC 1 A 60 VA per channel 4 channels 250 V rms or 30 VDC 5A 150 VA per channel 20 channels 250 V rms or 30 VDC 5 A 150 VA per channel Four channels 30 V 0 5 A 10 W per channel Dual channel 7 V 1 W per channel 4 GHz or 20 GHz Triple channel 7 V 1 W per channel 4 GHz or 20 GHz 4 channels
56. E gt PROBE TYPE gt THERMISTOR To select the thermistor type for the active channel choose from the following items THERMISTOR TYPE gt 10K 5K 2 2K Remote Interface Operation You can use the CONFigure or MEASure command to select the probe type and thermistor type For example the following command configures channel 3001 for measurements of a 5 thermistor CONF TEMP THER 5000 93001 You can also use the SENSe command to select the probe type and thermistor type For example the following command configures channel 1003 for measurements of a 10 thermistor SENS TEMP TRAN THERM TYPE 10000 1003 34980A User s Guide Features and Functions 2 Voltage Measurement Configuration This section contains information to help you configure the instrument for making voltage measurements The instrument can measure dc and true RMS ac coupled voltages on the measurement ranges shown below 100 mV 1V 10V 100V 300 V Autorange DC Input Resistance 34980A User s Guide Normally the instrument s input resistance is fixed at 10 MQ for all dc voltage ranges to minimize noise pickup To reduce the effects of measurement loading errors you can set the input resistance to greater than 10 GQ for the 100 mVdc 1 Vdc and 10 Vdc ranges Applies to dc voltage measurements only DC input resistance Input Resistance for Input Resistance for Input Resistance Setting 100 mV 1 V 10 V
57. Features and Functions Front Panel Operation To configure the measurement parameters and add a channel to the scan list use the Channel Configure key To initiate a scan and store all readings in memory press the Scan Measure key If you press the Scan Measure key with no scan list defined the instrument initiates a DMM only measurement see Stand Alone DMM Mode below To stop a scan in progress press and hold the Scan Measure key To view the readings in memory use the View key the readings are not erased when you read them Remote Interface Operation To define the list of channels to be included in the scan list use the ROUTe SCAN command To configure the measurement parameters on the desired channels use the CONFigure and SENSe commands To initiate a scan and store all readings in memory use the INITiate or READ command Each time you initiate a new scan the instrument will clear the previous set of readings from memory To stop a scan in progress use the ABORt command To view the readings in memory use the FETCh command the readings are not erased when you read them You can use the READ command in one of three forms depending on which measurement mode you wish to use Ifyou omit the optional ch list parameter and a scan list is not currently defined the READ command applies to the internal DMM e Ifyou omit the optional ch list parameter and a scan list is currently
58. INTERVAL To initiate the scan and store all readings in memory press the Scan Measure key Between scan sweeps WAITING FOR TRIG will be displayed on the front panel Note To stop a scan press and hold the Scan Measure key Remote Interface Operation The following program segment configures the instrument for an interval scan TRIG SOURCE TIMER Select interval time mode TRIG TIMER 5 Set the scan interval to 5 seconds TRIG COUNT 2 Sweep the scan list 2 times INIT Initiate the scam Note To stop a scan press and hold the Scan Measure key Manual Scanning In this configuration the instrument waits for either a front panel key press or a remote interface command before sweeping through the scan list All readings from the scan are stored in non volatile memory Readings accumulate in memory until the scan is terminated until the trigger count is reached or until you abort the scan You can specify a trigger count which sets the number of front panel key presses or scan trigger commands that will be accepted before terminating the scan See Trigger Count on page 49 for more information e Mx B scaling and alarm limits are applied to measurements during a manual scanning operation and all data is stored in non volatile memory Front Panel Operation Scan Configure gt INTERVAL gt MANUAL To initiate the scan and store all readings in memory press the Scan Measure key Note To stop a scan pre
59. L C8L 1 bypass C1L bypass 2 bypass CaL bypass C8H bypass C8L bypass o separate TE ET H m H L PER are 100 Q each H Row 1 H Row 2 2 T 1 Row 3 J T Row 4 2 lt NOTE Three digit channel numbers derived from the intersection of the rows and columns columns having two digits The intersection shown here represents Channel 308 Row 3 Column 8 Matrix 2 Col1H Col 1L Col2H Col 2L Col8H Col BL C1H C2H C2L C8H C8L C1H bypass CiL bypass 2 bypass C2L bypass C8H bypass C8L bypass Sif Row 5 Row 6 Row 7 Row 8 34980A User s Guide 155 5 5 Matrix Switch Modules 34933A D Sub Connectors for Two Wire Mode o Matrix 1 Matrix2 o For orientation the D sub connector end of the module is facing you Matrix 1 NOTE nthis diagram and the table below R C4L as NC ass NC represents row and C 9 9 9 ome O nOn C represents column NC bypass bypass bypass bypass C2H C2L bypass bypass R2H Nc GND o oe Bypass means CIL R3L NC NC S ed RIH RIL the 100Q in rush resistor that protects the reed relays 6
60. L 2H 21 24H 244 34L 25H 25L 40H 401 Interlock2 OO 0 69 9 Reserved 31H 31L 27H 271 37H 33H 33L 29H 291 39H 39L 35H 35L Interlock 2 0000009 00 0 9 GND 26H 261 36H 36L 32H 28H 28L 38H 38L 30H 30L NC NC NC NC OO OOOO 0000000606686 As a safety interlock 2 pins Desorption Pi Description 17 and 33 on Bank 2 1 26H 35 31H 19 36H 37 must be shorted to enable 2 d Bus 72H 3 Interlock2 17 relays to close The optional 34925T 001 for 224 2 Int rlock2 33 2 wire terminal block 23H 5 Reserved 18 shorts these pins for you 23L 6 GND 34 This feature protects 24H 9 No Connect 47 inadvertent routing of 24L 10 No Connect 48 high voltages from the Analog Buses to the D sub connector of the No Connect 49 No Connect 50 34980A User s Guide 131 4 Low Frequency Multiplexer Switch Modules 34925T 001 Terminal Block for Two or Four Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for fu
61. L 45H 45L 40H 40L O 9 9 51H 511 46H 461 52H 521 47H 471 43H 43L 69H 691 54H 54L 49H 491 55H 551 Interlock 2 OB OO OOOOO OOOOOOOOOO GND 61H 611 56H 56L 57H 57L 62H 62L 48H 48L 63H 63L 59H 591 64H 64L 50H 50L Interlock 2 0 0 X9 9 09 CeCe Ceo OCC OD Oe Ce GND 67H 67L 66H 661 68H 68L 53H 53L 58H 581 70H 701 65H 651 60H 601 NC 6 9 9 G9 amp 9 9 0 2 9 2 8 8 OO Description Description 36H 3 COM2 H 9 36L 4 COM2L 10 37H 7 Interlock 2 39 37L 8 Interlock 2 59 38H 11 GND 40 38L 12 GND 60 39H 15 No Connect 77 39L 16 No Connect 78 40H 19 40L 20 41H 1 41L 2 42H 5 42L 6 WARNING As a safety feature interlock 2 pins 39 and 59 on Bank 2 must be shorted to enable the Bank 2 Analog Bus relays to close the optional 34922T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34922T Terminal Block This terminal block with solder type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an in
62. NO 25 NO 28 NO 13 No Connect 17 17 NC 38 20 NC 23 NC 26 NC 31 NO 1 17 Common 21 20 Common 23 Common 26 Common 31 Common 2 17 NO 4 20 NO 23 NO 26 NO 34980A User s Guide 169 6 170 General Purpose Switch Modules 34937T Terminal Block This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number The 34980A Product Reference CD shipped with the instrument contains a the 34937T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format aa a OOOOOOOOOOO00 29 21 1 30 NO C NO C NC NO C NC NO C NO C NC NO C NC NO C NC NO C NC 3 4 5 6 AAAA AAAA oOOOOOOOOOO0Q OOOOOOOOO000 1 15 16 th 32 3 NO C NO C C NC NO C c NO C NC NO C NC NO C NC NO C NC 17 18 19 20 OoOOOOOOOOOO00 7 Pads for user supplied snubber circuity to alleviate reactive transients The circuits may consist of resistors capacitors varistors or other elements as needed to reduce the switching voltage and current transients inherent in reactive cir
63. ON After selecting the 2 wire WIRE2 or 1 wire WIREI you must cycle power on the 34980A to activate the new setting Remote Interface Operation The following command selects the 1 wire configuration on the module in slot 3 The new configuration will not take effect until you cycle power on the 34980A SYST MOD WIRE MODE WIRE1 3 27 2 Features and Functions Analog Bus and Internal DMM Considerations 28 This section provides important environmental and electrical considerations that can affect mainframe operation Environmental Operating Conditions The 34980A mainframe including the optional internal DMM is designed to operate in a temperature range of 0 C to 55 C with non condensing humidity The maximum humidity is 80 at 40 C or higher Do not use in locations where conductive dust or electrolytic salt dust may be present The 34980A should be operated in an indoor environment where temperature and humidity are controlled Condensation can pose a potential shock hazard Condensation can occur when the instrument is moved from a cold to a warm environment or if the temperature and or humidity of the environment changes quickly When used in pollution degree 1 conditions the maximum voltage rating for the Analog Buses is 300V When used in pollution degree 2 conditions the maximum voltage rating is 100V If conditions change ensure that condensation has evaporated and the instrument has thermally sta
64. Schematic for One Wire Mode 133 34925A D Sub Connectors for One Wired Mode 134 34925T 002 Terminal Block for One Wire Mode 135 viii 34980A User s Guide 5 Matrix Switch Modules Matrix Switch Modules 138 SCPI Programming Examples for the Matrix Modules 139 Linking Multiple Matrix Modules 142 34931A Dual 4x8 Armature Matrix 144 34931A Simplified Schematic 145 34931A D Sub Connectors 146 34931T Terminal Block 147 34932A Dual 4x16 Armature Matrix 149 34932A Simplified Schematic 150 34932A D Sub Connectors 151 34932T Terminal Block 152 34933A Dual Quad 4x8 Reed Matrix 153 34933A Simplified Schematic for Two Wire Mode 155 34933A D Sub Connectors for Two Wire Mode 156 34933T 001 Terminal Block for Two Wire Mode 157 34933A Simplified Schematic for One Wire Mode 159 34933A D Sub Connectors for One Wire Mode 160 34933T 002 Terminal Block for One Wire Mode 161 6 General Purpose Switch Modules General Purpose Switch Modules 164 34937A and 34938A SCPI Programming Examples 166 34937A 32 Channel GP Switch 168 34937A Simplified Schematic 168 34937A D Sub Connectors 169 34937T Terminal Block 170 34938A 20 Channel High Current GP Switch 171 34938A Simplified Schematic 171 34938A D Sub Connectors 172 34938T Terminal Block 173 7 RF Multiplexer Switch Modules 34941A and 34942A RF Multiplexer Switch Modules 176 Installing SMA Connectors 177 Isolating Connector Banks 177 34941A and 34942A SCPI Programming Examples 178 34941A
65. Since these parameters are used by several measurement functions the discussion is combined into one common section Refer to the later sections in this chapter for more information on parameters that are specific to each measurement function Overview of Measurement Modes Two modes of operation are available with the 34980A depending on the level of switching and measurement that you wish to directly control the Stand Alone DMM Mode and the Scanning Mode Stand Alone DMM Mode In the Stand Alone DMM Mode the internal DMM makes measurements of whatever signals are present on the Analog Buses In this mode you have full control of what channel relays are closed and connected to the appropriate Analog Bus for the measurement You can route your signals directly to the internal DMM using the 34980A multiplexer and matrix modules or you can connect to external signals via the Analog Bus connector located on instrument s rear panel see Analog Buses on page 15 Front Panel Operation To configure the most common measurement parameters for the internal DMM use the DMM Configure key To close the desired channel relays and Analog Bus relays use the Close key The Analog Bus relays on the multiplexer and matrix modules are numbered s911 s912 s913 etc To auto trigger the internal DMM and display continuous readings press the DMM Measure key Press the DMM Measure key again to stop taking measurements Fo
66. Sure commands For example the following command selects the 10 Vdc range on the specified channel CONF VOLT DC 10 DEF 93001 34980A User s Guide 17 2 Features and Functions Measurement Resolution Resolution is expressed in number of digits the internal DMM can measure or display on the front panel You can set the resolution to 4 5 or 6 full digits plus a digit which can be 0 or 1 To increase the measurement accuracy and improve noise rejection select 6 digits To increase the measurement speed select 4 2 digits For ac voltage measurements the resolution is fixed at 6 digits The only way to control the reading rate for ac measurements is by changing the channel delay see page 53 or by setting the ac filter to the highest frequency limit see page 36 The specified resolution is used for all measurements on the selected channel If you have applied Mx B scaling or have assigned alarms to the selected channel those measurements are also made using the specified resolution Measurements taken during the Monitor function also use the specified resolution Changing the number of digits does more than just change the resolution of the instrument It also changes the ntegration time which is the period the instrument s analog to digital A D converter samples the input signal for a measurement See Custom A D Integration Time on page 19 for more information The CONFigure and ME
67. URE STATE ON AT34980 To Change the Security Code To change the security code you must first unsecure the instrument and then enter a new code Make sure you have read the security code rules described on page 70 before attempting to change the security code Front Panel Operation Utility gt CALIBRATE gt SET CAL CODE To change the security code unsecure the instrument using the old security code Then go back into the menu and change the code Changing the code from the front panel also changes the security code as seen from the remote interface Remote Interface Operation To change the security code unsecure the instrument using the old security code Then enter the new code as shown below CAL SECURE STATE OFF AT34980 Unsecure with old code CAL SECURE CODE SN123456789 Enter new code 34980A User s Guide 71 2 72 Features and Functions Calibration Count You can query the instrument to determine how many calibrations have been performed on the entire mainframe the digital modules or the internal DMM Note that your instrument was calibrated before it left the factory When you receive your instrument be sure to read the various counts to determine the initial values The calibration count is stored in non volatile memory in the mainframe and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command The calibration counts i
68. YPe 7 Example Resetting module s to power on state The following command resets a module in slot 4 to its power on state SYSTem CPON 4 200 34980A User s Guide Multifunction Module with DIO D A and Totalizer 34952A Simplified Schematic 10 Internal to the 34952A Module User Supplied Connections Channel f o Bit8 Channel e f o0 Bit 15 Bit 16 003 Bit 23 Bit 24 Channel f 00 Bit 31 Count 32 Bits Count Channel Totalizer 3 005 Gate Gate LS 16 Bits DAC H Channel I DAC 1L 006 16 Bits I DAC 2H Channel I DAC 2L 007 34980A User s Guide 201 10 Multifunction Module with DIO D A and Totalizer 34952 D Sub Connector CNT CNT GND 0000600 BIT BIT GND AND tae eae BT BPO BIT BIT BIT BIT 13 14 17 18 19 20 201 22 G Q9 G9 G9 GO GO G9 GO DAC DAC DAC pac BIT BIT BIT a GND NG 1L 4H 23 2 26 27 28 OND 2 z amp G G9 G9 9 Description Description Description Pin Description 4 Count GND Bie 1 5 Channel 5 Count No Connect Bit 2 7 Totalizer Gate Channel 1 BIS Channel 3 Bit 4 9 r DAC 1L Bits 10 Chann
69. adings in memory and all readings are automatically time stamped If memory overflows the new readings will overwrite the first oldest readings stored the most recent readings are always preserved The CONFigure and MEASure commands automatically set the sweep count to 1 sweep The instrument sets the sweep count to 1 after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation Scan Configure gt SWEEP COUNT Remote Interface Operation SWEep COUNt 34980A User s Guide Features and Functions Sample Count The sample count sets the number of auto triggered samples the internal DMM will take per channel per trigger The sample count applies to both scanning and stand alone DMM measurements with no scan list The front panel sample annunciator turns on during each measurement Sample Count Trigger 1 to 500 000 samples fI Trigger t Sample count for Stand Alone DMM Mode Sweep Count A Trigger Sweep 1 Sweep 2 Sweep n Trigger m ae a ins Chi Ch2 Ch3 Ch4 Ch5 Ch6 ke eed Sample Count 1 to 500 000 samples Sample count for Scanning Mode 34980A User s Guide 51 2 2 52 Features and Functions For scanning the specified sample count sets the number of readings per channel same for all chan
70. ains a the 34931T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format 34980A User s Guide 147 Matrix Switch Modules On the 34931T terminal block only two sets of screw terminals are for use with the 34931A module See the following drawing When using the 34931T terminal block be sure to wire your connections to the two sets of screw terminals closest to the 50 pin D sub connectors JE E A 2090808080808 E Ri R2 c2 C4 MATRIX CHANNEL 4X8 gt Ci C8 gt 3 2 x H L H L H L R3 R4 c5 ce C7 c8 2000000000 A MATRIX 2 ABUS oooooooooooo R6 H L R8 Although columns are numbered the same on the two matrices they are electrically separate example C8 148 34980A User s Guide Matrix Switch Modules 5 34932A Dual 4x16 Armature Matrix 34980A User s Guide The 34932A dual 4x16 armature matrix contains two matrices each with 64 2 wire crosspoint latching armature relays organized in a 4 row by 16 column configuration Every row and column are made up of two wires each a high H and a low L Each crosspoint relay has a unique channel number representing the row and column that intersect to cr
71. al path to the COM terminal consists of two relays See the simplified schematic on page 179 For each path the module stores the cycle count for both relays and returns the greater of the two The cycle count for the two channels within the same physical relay package as indicated by the dashed lines in the simplified schematic will always be equal Therefore the cycle count for Channels 101 and 102 will always be equal The following statement reads back the number of completed cycles for the channels 101 and 202 on a module installed in slot 6 DIAGnostic RELay CYCLes 96101 6202 34980A User s Guide RF Multiplexer Switch Modules 7 Example Clearing the cycle countforarelay The following command resets the cycle count on the channels 103 and 201 for a module in slot 1 DIAGnostic RELay CYCLes CLEar 1103 1201 Example Resetting module to power on state The following command resets a module in slot 4 to its power on state SYSTem CPON 4 34941A and 34942A Simplified Schematic Both the 34941A and 34942A modules are configured alike They each contain four banks of latching switches Each bank consists of three form C relays The front panel of the two RF MUXmodules are similar with channel labels in the same positions the unique product number on the left and the product description on the right RF MUX 404 xx Ohm 34980A User s Guide 179 7 Multiplexer Switch Modules 180 34980A User s Guide
72. al DMM is used The Monitor mode is automatically enabled on all channels that are part of the active scan list see Monitor Mode on page 60 The present scan list is stored in volatile memory and will be lost when power is turned off or after a Factory Reset RST command Adding Channels to the Scan List Before you can initiate a scan you must set up a scan list to include all desired multiplexer or digital channels Channels which are not in the scan list are skipped during the scan By default the instrument scans the list of channels in ascending order from slot 1 through slot 8 channels are reordered as needed To Build a Scan List From the Front Panel To add the active channel to the scan list press Channel Configure Then select the function range resolution and other parameters for this channel Then add the channel to the scan list by selecting SCAN THIS CHANNEL gt YES To remove the active channel from the scan list select SCAN THIS CHANNEL NO To remove all channels from the scan list select Scan Configure CLEAR SCAN LIST YES 34980A User s Guide 34980A User s Guide Features and Functions 2 To initiate a scan and store all readings in memory press Scan Measure Each time you initiate a new scan the instrument clears all previously stored readings If you have not defined a scan list Scan Measure performs an internal DMM scan independent of any channels To stop a scan in
73. alled module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information The 34980A Product Reference CD shipped with the instrument contains a the 34924T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format 0420 0430 0440 H L H LJH L 0480 0490 H LJH B530 0540 H LJH L 9580 4590 L L 9620 0630 0640 H LJH H L H H e e L L L 126 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34925A 40 80 Channel Optically Isolated FET Multiplexer The 34925A 40 80 Channel Optically Isolated FET Multiplexer 40 80 Ch FET MUX module is a high speed and high density FET MUX for high throughput production test This module is divided into two equal banks of non latching FET switches This module also contains four armature Analog Bus relays Through ABusl and ABus2 you can connect any of the channels to the internal DMM for voltage or resistance measurements When the power is off all channel and Analog Bus relays open Using program commands or the mainframe front panel you can control each of the FET channel switches individually and configure this module for differential 2 wire or 4 wire or single ended 1 wire mode Refer to the s
74. and 34942A Simplified Schematic 179 34980A User s Guide ix 8 Dual Triple Microwave Switch Modules 34946A and 34947A Dual Triple Microwave Switch Modules 182 34946A and 34947A SCPI Programming Examples 182 Installing SMA Connectors 183 34946A and 34947A Simplified Schematics 184 9 4 Channel Isolated D A Converter with Waveform Memory Module 34951A 4 Channel Isolated D A Converter with Waveform Memory Module 186 34951A SCPI Programming Examples 189 34951A Simplified Schematics 193 34951A D Sub Connector Pinout 194 34951T Terminal Block 195 10 Multifunction Module with DIO D A and Totalizer 34952A Multifunction Module 198 Digital Input Output 198 Totalizer Input 198 Analog Output DAC 198 34952 SCPI Programming Examples 199 34952A Simplified Schematic 201 34952 D Sub Connector 202 34952T Terminal Block 203 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide en e a o e 1 90 Introduction to the 34980A e e e Front Panel at a Glance 2 Rear Panel at a Glance 3 Rear Panel Connector Pinouts 4 Annunciator Display Indicators 5 Front Panel Menu Reference 6 Instrument Rack Mounting 7 RE Agilent Technologies 1 Introduction to the 34980A Front Panel at a Glance 4 A Control y T Ca C J 6 C CANCEL 7 X A
75. and Bank 2 through ABus3 Or externally you can connect COMI to COM2 to create this configuration 34980A User s Guide 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 Low thermal offset voltage makes the 34921A ideal for low level signal switching The 34921T optional terminal block provides a built in thermocouple reference junction that helps minimize errors due to thermal offset when you measure thermocouples This module has capability to scan as many as 100 channels second using the internal DMM With the automatic break before make connection operation you are assured that no two signals are connected to each other during a scan When using the module in a non scanning mode you can close as many channels as you wish This module is safety interlock protected which means whenever the D sub connector end of the modules is exposed the Analog Bus relays automatically open and disconnect from the Analog Bus For more information refer to page 96 and page 105 When power is off all channel relays maintain state and the Analog Bus relays open 103 4 Low Frequency Multiplexer Switch Modules 34921A Simplified Schematic This drawing shows two independent 20 channel 2 wire MUXes NOTE The three digit number assigned to each switch represents Bank 1 the channel number NOTE Bank relays Armature latching Analog Bus relays Armature non latching Current
76. annel on the module to synchronize off either an internally generated 20 MHz clock or the positive edge of an external user supplied clock An external clock must be less than 10 MHz or indeterminate behavior will result Additionally as the maximum point to point update rate of the DACs is 200 kHz if you configure a DAC to run off an external clock you will need to ensure that the correct clock divisor is also configured for that DAC For example if you supply a 10 MHz external clock the minimum clock divisor is 50 because the maximum update rate is 200 kHz If a clock divisor less than the minimum is configured indeterminate behavior will results Thresholds for the Clock In are 5 V TTL tolerant Clock Out There is one clock output on the DAC module which you can configure to output at frequencies up to 10 MHz Since it uses a 16 bit clock divisor the available output frequencies range in steps of Z0 MHz 216 with a minimum output frequency of 305 Hz The output impedance of the Clock Out is 50 Q The line between external Clock Out and external Clock In is shared You can use the external Clock Out to provide the external Clock In signal However both a user supplied external clock and the module s Clock Out cannot drive the line at the same time Trigger In You can configure each DAC on the module to trigger off an externally provide Trigger In that has a pulse width greater than 100 ns The Trigger In line is 5V TTL tolerant
77. asured on the selected range manual ranging the instrument gives an overload indication tOVLD from the front panel or 9 9E 37 from the remote interface For temperature measurements the instrument internally selects the range you cannot select which range is used For thermocouple measurements the instrument internally selects the 100 mV range For thermistor and RTD measurements the instrument autoranges to the correct range for the transducer resistance measurement For frequency and period measurements the instrument uses one range for all inputs between 3 Hz and 300 kHz The range parameter is required only to specify the resolution Therefore it is not necessary to send a new command for each new frequency to be measured The coNFigure and MEASure commands contain an optional parameter which allows you to specify the range or autoranging The instrument returns to autoranging when the measurement function is changed and after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the range setting Front Panel Operation DMM or Channel Configure gt RANGE First select the measurement function on the active channel You are automatically guided to the next level of the menu where you can select a specific range or autoranging Remote Interface Operation You can select the range using parameters in the CONFigure and MEA
78. beled on the simplified schematics as 014 on Bank 1 of each MUX module A MUX or matrix module is in slot 3 channel of interest is 921 Analog Bus relay on ABus1 A 34931A 34932A 34933A 2 wire mode matrix module is in slot 5 crosspoint is row 3 column 4 A 34933A matrix module in 1 wire mode is in slot 2 matrix of interest is 4 crosspoint is row 3 column 7 Determined by MUX module channel numbers are determined by the numbers assigned to the switches on each bank Channel numbers contain three digits MUX and matrix channel numbers for the Analog Bus relays are determined by the number assigned to the relays Matrix module in 2 wire mode channel numbers are derived from the crosspoint or intersection of rows and columns columns having two digits 34933A matrix module in 1 wire mode channel numbers are derived from a specific matrix number and the crosspoint or intersection of rows and columns on that matrix 34980A User s Guide Introduction to the Plug In Modules for the 34980A 3 Interconnection Solutions Overview Depending upon your need you can connect your DUT to the module using one of these interconnection solutions 349xxT terminal blocks for compatible low frequency modules offer a flexible method for connecting 300 V rated Y1135 Y1136 Y1137 and Y1138 standard cables for 50 pin D sub and 78 pin D sub connectors 300 V rated are available e Y1139A Y1140A Y1141A
79. bilized until pollution degree 1 conditions are restored before turning on power to the equipment Pollution Degree 1 No pollution or only dry non conductive pollution occurs The pollution has no influence on insulation IEC 61010 1 2nd Edition Pollution Degree 2 Normally only non conductive pollution occurs Occasionally a temporary conductivity leakage current between isolated conductors caused by condensation can be expected IEC 61010 1 2nd Edition 34980A User s Guide Features and Functions 2 Electrical Operating Conditions WARNING To avoid electric shock turn off the 34980A and disconnect or de energize all field wiring to the modules and the Analog Bus connector before removing any module or slot cover Transients The Analog Buses and the optional internal DMM are designed to safely withstand occasional transient overvoltages up to 1000 Vpeak Typically these transient overvoltages result from switching inductive loads or from nearby lightning strikes The lightning caused transient overvoltages that may occasionally occur on mains power outlets may be as high as 2500 Vpeak WARNING Do not connect the Analog Buses directly to a mains power outlet If itis necessary to measure a mains voltage or any circuit where a large inductive load may be switched you must add signal conditioning elements to reduce the potential transients before they reach the Analog Buses High Energy Sources Th
80. c for One Wire Mode NOTE Although rows are numbered the same across the matrices they are electrically separate Matrix 1 1 1 1 2 1 8 NOTE 1C1 bypass 1 2 bypass 1C8 bypass Matrix relays Reed non latching e e e Analog Bus relays Armature non latching E 2 gt NOTE Resistors shown are 100 Q each 1 4 jci s Matrix 2 9 Row2 Hi bypass 20 bypass ag bypass Row 3 H Row4 2 i NOTE Three digit channel Row1 og 4 C numbers are derived from a Row 2 2 4 T specific matrix number and the Row3 4 intersection of rows and L Row 4 2 columns on that matrix The channel shown here is 132 Matrix 1 Row 3 Column 2 Channel 2128 Matrix 3 x Matrix 2 Row 1 Column 8 3C1 bypass 3C2 bypass 3C8 bypass e e 5 gt E Analog Buses Row1 4 4 1 Row 2 ix DM Row 3 MESS Row4 2 4 4 4C1 4C2 Matrix 4 4C8 4C1 bypass 4C2 bypass 4C8 bypass Q Row1 2 55 4 4 Row2 2 54 4 1 Row3 4 4 Row4 4 34980A User s Guide 159 Matrix Switch Modules 34933A D Sub Connectors for One Wire Mode o Matrices 1 amp 2 Matrices 3 amp 4 o Matrices 1 and 2 For orientation the D sub connector end of the module is facing you 1C5 2C5 C4 C4 2C4 bypass bypass 1C5 2C5 2C7 1C4 1R4 2R4 bypa
81. can sink up to 400 mA From the front panel you can read data from only one 8 bit input port at a time You can configure the DIO ports for 8 16 or 32 bit operations The DIO channels are connected by internal 5 V pull up resistors when configured as inputs Totalizer Input The 32 bit totalizer can count pulses at a 100 kHz rate You can configure the totalizer to count on the rising edge or falling edge of the input signal A TTL high signal applied to the Not Gate terminal enables counting and a low signal disables counting A TTL low signal applied to the Not Gate terminal enables counting and a high signal disables counting The totalizer counts only when both terminals are enabled When a gate is not connected the gate terminal is pulled to the enabled state effectively creating a gate always condition Analog Output DAC The two analog outputs are capable of outputting voltages between 12 volts with 16 bits of resolution Each DAC channel is capable of 10 mA maximum current Use the two analog outputs to source bias voltages to your DUT to control your analog programmable power supplies or as set points for your control systems The outputs are programmed directly in volts 34980A User s Guide Multifunction Module with DIO D A and Totalizer 10 34952A SCPI Programming Examples 34980A User s Guide The programming examples below provide you with SCPI command examples to use for actions specific to the general pu
82. ch Modules SCPI Programming Examples for the MUX Modules The programming examples below provide you with SCPI command examples to use for actions specific to the MUX modules The slot and channel addressing scheme used in these examples follow the form scec where s is the mainframe slot number 1 through 8 and cec is the three digit channel number For information on specific MUX channel configurations refer to the simplified schematics contained in each MUX section of this chapter For complete information on the SCPI commands used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Opening and Closing Channels Example Closing and opening channels on the armature and reed MUX modules This command closes the specified channels on a MUX module If any channel in a bank is defined to be part of the scan list and a scan is occurring attempting to close another channel including Analog Bus channels within the same bank will result in an error Channel closures in the other bank are allowed as long as no channels are part of the scan list The following commands close and open channels 13 and 15 through 18 in slot 3 ROUTe CLOSe 3013 3015 3018 ROUTe OPEN 3013 3015 3018 Example Closing channels on the FET MUX module The FET MUX module supports a 1 N type closure meaning that you can
83. channel addressing scheme used in these examples follow the form scce where s is the mainframe slot number 1 through 8 and ccc is the three digit channel number For information on specific configurations refer to the simplified schematics in this chapter For complete information on the SCPI commands used to program the 349804 refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Example Closing channels You can use the ROUTe CLOSe to close channels on the microwave switch modules but these modules do not support the ROUTe OPEN command You can open channels by closing other channels With this one step operation the relays switch in the proper order that avoids momentary connection of the wrong input to the switch output The following statement closes channel 201 of a microwave switch module installed in slot 5 ROUTe CLOSe 895201 Example Querying channels for open or close state The following command returns the open 1 or close 0 state of channel 202 for a module in slot 3 ROUTe CLOSe 893202 182 34980A User s Guide Dual Triple Microwave Switch Modules 8 Example Querying the system for module identify The following command returns the identify of the module installed in slot 7 SYSTem CTYPe 7 Example Reading the cycle countforarelay The following command reads back the number of completed cycles
84. count for a relay all switch modules The following command resets the relay cycle count on channels 7 and 16 for a module in slot 1 DIAGnostic RELay CYCLes CLEar 01007 1016 Example Resetting Module s to power on state all modules The following command resets a module in slot 4 to its power on state SYSTem CPON 4 167 6 General Purpose Switch Modules 34937A 32 Channel GP Switch The 34937A general purpose switch module provides independent control of Twenty eight Form C DPST latching relays rated at 1 A Four Form A SPST latching relays rated at 5 A You can set the power failure state for these 5 A relays See page 164 and page 165 A temperature sensor on these modules triggers system interrupts when high carry current induced heat on the modules reaches a threshold of 70 C 34937A Simplified Schematic No Channel 001 1 A Form C Relay COM NC 028 NOs 1 A Form C Relay COM NO 7 Channel 029 COM 5 A Form A Relay N _ Mem Channel 032 COM 5 A Form A Relay 168 34980A User s Guide General Purpose Switch Modules 6 34937A D Sub Connectors Bank 1 Bank 2 Bank 1 For orientation the D sub connector end of the module is facing you 29NO 29C 7NO 3NO 12NO 8NO 4NO 1NO 13NO 9NO 5NO 2NO 14NO 10NO 30NO 30C NC GO 9000006060 OOOH 9 Reserved 11C 7C 3C 12C 8C 4 1C 13C 9C 5C 2C
85. count on channel 7 and channel 16 for a MUX module in slot 1 DIAGnostic RELay CYCLes 91007 1016 The 34925A will return 0 for relay counts because the FET relays on that module are non mechanical and have an undefined lifetime 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 Example Clearing the cycle count for a relay The following command resets the cycle count to zero on the channels 7 and 16 for a MUX module in slot 1 DIAGnostic RELay CYCLes CLEar 1007 1016 Example Resetting module s to power on state The following command resets a module in slot 4 to its power on state SYSTem CPON 4 34980A User s Guide 101 4 Low Frequency Multiplexer Switch Modules 34921A 40 Channel Armature Multiplexer with Low Thermal Offset 102 The 34921A 40 Channel Armature Multiplexer 40 Ch Arm MUX is divided into two banks with 20 latching armature switches channels 1 20 and 21 40 in each This module also offers four additional fused relays channels 41 44 for making AC and DC current measurements with the internal DMM with no external shunts needed These current channels feature make before break connections to ensure continuous current flow when switching from one current channel to another The current fuses are replaceable Refer to the 34980A Service Guide for specific information about these fuses This module also contains nine armature Analog Bus relays channels 911 914 921 924 and 931 f
86. cuits 34980A User s Guide General Purpose Switch Modules 6 34938A 20 Channel High Current GP Switch The 34938A high channel GP switch module provides twenty 5 A Form A relays for general purpose switching needs You can set the power failure state for these 5 A relays See page 164 and page 165 A temperature sensor on these modules triggers system interrupts when high carry current induced heat on the modules reaches a threshold of 70 C 34938A Simplified Schematic NO 79 Channel 001 COM b A Form A Relay 020 COM 5 A Form A Relay 34980A User s Guide 171 6 General Purpose Switch Modules 34938A D Sub Connectors Bank1 Bank2 1 For orientation the D sub connector end of the module is facing you 6NO 6 1NO 1 7NO 7 2NO 2C 3NO 3C 9NO 9C 4NO 4C 5NO 5 NC 09 5 Se Reserved 1NO 1 7NO 7 2NO 2 3NO 3C 9NO 9 4NO 4C 5NO 5 GND Q C9 C C C 69 9 GND 6NO 6 7NO 7 8NO 8 8NO 8C 9NO 9 4NO 4C 10NO 10C 10NO 10C G9 0 9 9 9 9 CO C9 CO Q9 C9 9 1Common 3Common 5Common 7Common 9Common 1NO 19 4NO 6NO 8NO 10NO 47 1Common 20 4Common 6Common 8Common 10Common 48 2NO 7 4NO 6NO 8NO 10NO 49 2Common 8 4Common 6Common 8Common 10Common 50 2NO 23 4NO 7NO 9NO Reserved 18 2Common 2
87. cure unsecure the instrument for calibration Query and update the firmware revisions for the mainframe and modules DMM Set DMM measurement function AC volts DC volts AC current DC current 2 wire ohms 4 wire ohms temperature frequency and period Set function parameters Channel Setchannel measurement function AC volts DC volts AC current 34921A only DC current 34921A only 2 wire ohms 4 wire ohms temperature frequency and period Set function parameters Scan Set up trigger in parameters Set up sweep count Set up sample count Sequences Available at a later firmware release Module Open all relays Clear all measurement functions Clear channel labels Configure external trigger and clock 34951A Set trace or level mode 34951A Set waveform parameters 34951A Store and recall instrument states Store up to six instrument states in non volatile memory 34980A User s Guide Introduction to the 34980 1 View View readings alarms and errors View the scanned readings from memory View errors in the error queue Read the number of cycles for the displayed relay relay maintenance feature Advanced Available at a later firmware release Alarm Available at a later firmware release Instrument Rack Mounting Using the optional Agilent Y1130A Rack Mount Kit you can mount the 34980A in a standard 19 inch rack cabinet The kit includes hardware and instructions to f
88. d but the first and last channel in the range must be valid ROUT CLOS 1005 1010 2015 10 34980A User s Guide 34980A User s Guide Features and Functions 2 The Analog Bus relays numbered s911 s912 s913 etc on the multiplexer and matrix modules are ignored if they are included in a range of channels An error will be generated if an Analog Bus relay is specified as the first or last channel in a range of channels For example the following command closes all valid channels between channel 30 slot 1 and channel 5 slot 2 In addition this command closes Analog Bus relay 911 on the module in slot 1 Bank 1 Note that although the specified range of channels includes the other Analog Bus relays they are ignored and are not closed by this command ROUT CLOS 1030 2005 1911 The following command will generate an error since the Analog Bus relays cannot be specified as the first or last channel in a range of channels none of the channels will be closed ROUT CLOS 1005 1911 IGenerates an error In the following command since the optional ch list parameter is omitted the command will be applied to the internal DMM If the internal DMM is disabled or is not present an error will be generated INP IMP AUTO ON Applies to the internal DMM 11 2 Features and Functions General Measurement Configuration This section contains general information to help you configure the instrument for making measurements
89. d ac filter setting as shown below DC Voltage Thermocouple DC Current for all ranges Integration Time Trigger Delay PLC gt 1 2 0 ms PLC lt 1 1 0 ms Resistance RTD Thermistor 2 and 4 wire Trigger Delay Trigger Delay Range for PLC gt 1 Range for PLC lt 1 100Q 2 0 ms 10002 1 0 ms 1kQ 2 0 ms 1kQ 1 0 ms 10 KQ 2 0 ms 10 1 0 ms 100 kQ 25 ms 100 20 ms 1MQ 30 ms 1MQ 25 ms 10 MQ 200 ms 10 MQ 200 ms 100 MQ 200 ms 100 MQ 200 ms AC Voltage AC Current for all ranges AC Filter Trigger Delay Slow 3 Hz 7 0 seconds Medium 20 Hz 1 0 second Fast 200 Hz 120 ms Frequency Period AC Filter Trigger Delay Slow 3 Hz 600 ms Medium 20 Hz 300 ms Fast 200 Hz 100 ms Digital Input Totalize Trigger Delay 0 seconds 34980A User s Guide 23 2 24 Features and Functions Safety Interlock The Safety Interlock feature prevents connections to the Analog Buses if no terminal block or properly wired cable is connected to a module available on multiplexer and matrix modules only Normally if you attempt to connect to the Analog Buses without a terminal block or properly wired cable connected an error is generated You can however temporarily disable errors generated by the Safety Interlock feature This simulation mode may be useful during test system development when you may not have connected any terminal blocks or cables to your module
90. de ROUTe MONitor MODE CHANne1 DMM The following program segment selects the channel to be monitored specify only one channel and enables the Monitor function ROUTE MON CHAN 1003 ROUTE MON CHAN ENABLE ON 1003 ROUTE MON STATE ON The following program segment enables the Monitor function on the internal DMM ROUTE MON MODE DMM ROUTE MON STATE ON To read the monitor data from the selected channel or the internal DMM send the following command Each reading is returned with measurement units time stamp channel number and alarm status information see Reading Format on page 56 ROUTe MONitor DATA 34980A User s Guide 61 2 Features and Functions System Related Operations 62 This section gives information on system related topics such as instrument state storage error conditions self test and front panel display control This information is not directly related to making measurements but is an important part of operating the instrument Firmware Revision The mainframe the internal DMM and each of the plug in modules has its own microprocessor You can query each to determine which version of firmware is installed For the mainframe three firmware revision numbers are returned mainframe revision boot code revision and front panel revision For the internal DMM and all plug in modules one firmware revision number is returned Front Panel Operation Utility gt FIRMWARE gt REVISIONS
91. defined the READ command performs a scan of the channels in the scan list Ifyou specify a ch list regardless of whether a scan list is currently defined the READ command performs a temporary scan of the specified channels independent of the present scan list You can use the MEASure command in one of two forms depending on which measurement mode you wish to use If you omit the optional ch list parameter the MEASure command applies to the internal DMM Ifyou specify a ch list the MEASure command performs a temporary scan of the specified channels independent of the present scan list 34980A User s Guide Features and Functions 2 Analog Buses 34980A User s Guide The 34980A provides four 2 wire internal Analog Buses for easier signal routing You can route your measurements directly to the internal DMM using the 34980A multiplexer and matrix modules or you can connect to external signals via the Analog Bus connector located on the instrument s rear panel see connector pinout below Since four 2 wire buses are provided you can dedicate one bus for use with the internal DMM and use the other three buses for module extensions or additional signal routing between modules ANALOG BUSSES Current I Pin 5 ABus 1 HIPIN 9 ABus1 LO Pin 4 2 10 3 ABUSS ABus3 LO Pin 2 ABus4 HI Pin 6 e ABus4 LO Pin 1 Analog Bus connector as viewed from rear of instrumen
92. dent 20 channel 2 wire MUXes To change configuration modes use the SYSTem MODule WIRE MODE command 114 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 NOTE The three digit number assigned to each switch represents Bank 1 the channel number H NOTE on On T 612 Bank relays Reed non latching L ud d 2 12 17 Analog Bus relays Armature uu 0 0 ami non latching COM 1 JE 004 014 019 EIS H JL 1002 1002 005 L 015 020 T L H ul Te 1000 1000 VV WM 1000 911 Analog Buses H L H L H L 026 LL 081 L5 036 L5 H 027 032 15 2 COM 2 038 039 EL L 040 L5 E L5 029 L5 L 030 34980A User s Guide 115 4 Low Frequency Multiplexer Switch Modules 34923A D Sub Connectors for Two or Four Wire Mode Bank 1 Bank 1 Bank 2 For orientation the D sub connector end of the module is facing you 1H iL 2H 2L 3H 3L 1H 1L 4H 4L 14H 14L 5H 5L 20H 201 Interlock1 amp 6 0 9 0 9 6 X9 Q0 9 09 09 09 099 9 Reserved 11H 11L 7H 7L 17H 17L 13H 11 9H 9 19H 19L 15H 151 Interlock 1 0000000000000006 Reserved GND 6H 6L 16H 16L 12H 12L 8H 8L 18H 18L 10H 10L 0000009000 0
93. e Analog Buses and the optional internal DMM are designed to handle inputs up to their rated currents or their rated powers whichever is less Under certain fault conditions high energy sources could provide substantially more current or power than the instrument can handle It is important to provide external current limiting such as fuses if the inputs are connected to high energy sources CAUTION Install current limiting devices between high energy sources and the module inputs 34980A User s Guide 29 2 Features and Functions Temperature Measurement Configuration This section contains information to help you configure the instrument for making temperature measurements The table below shows the thermocouple RTD and thermistor types for which the instrument supports direct measurements Temperature transducers supported Thermocouple Types RTD Types Thermistor Types J K N R S T Ro 490 to 2 1 2 2 5 10 0 00385 DIN IEC 751 YSI 44000 Series a 0 00391 Using ITS 90 software conversions t Using IPTS 68 software conversions Measurement Units The instrument can report temperature measurements in C Celsius F Fahrenheit or K Kelvins You can mix temperature units on different channels within the instrument and on the same module The CONFigure and MEASure commands automatically select C Setting the Mx B measurement label to C F or K
94. e coNFigure and MEASure commands automatically set the gain M to 1 and offset to 0 A Factory Reset RST command turns off scaling and clears the scaling values on all channels An Instrument Preset SYSTem PRESet command does not clear the scaling values and does not turn off scaling Front Panel Operation DMM or Channel Configure SCALING GAIN OFFSET UNITS To define the label on the selected channel press the arrow keys to move the cursor to a specific position and then turn the knob to select the desired letter or number To clear the label on the selected channel change each character to starting with the rightmost character and then press the left arrow key to move to the next character Remote Interface Operation Use the following commands to set the gain offset and custom measurement label CALC SCALE GAIN 1 2 1003 CALC SCALE OFFSET 10 1003 CALC SCALE UNIT PSI 1003 After setting the gain and offset values send the following command to enable the scaling function on the specified channel CALC SCALE STATE ON 1003 41 2 Features and Functions Scanning The instrument allows you to combine a DMM either internal or external with multiplexer channels to create a scam During a scan the instrument connects the DMM to the configured multiplexer channels one at a time and makes a measurement on each channel Any channel that can be read by the instrum
95. e connections Four wire controls occur only when doing 4 wire measurement operations through the internal DMM such as MEASure FRESistance or scanning a channel previously configured as 4 wire One Wire two independent 40 channel 1 wire MUXes This configuration requires neither using external wiring nor connecting through the Analog Bus relays one 80 channel 1 wire MUX You must use external wiring or connect through the Analog Bus relays for this configuration Because all bank relays supply only HI signals you can apply a LOW signal through COM1 L or COM2 L when you are making 2 wire resistance measurements in 1 wire mode Interlock Protection This module is interlock protected which means whenever the D sub connector end of the modules is exposed the Analog Bus relays immediately open and disconnect from the Analog Buses For more information refer to page 96 Overvoltage Protection This module also features high voltage detection 100 V and current limiting circuitry to protect the FET relays This circuitry senses current flows from input overvoltages These overvoltages may come from either the MUX input or from the Analog Buses In addition each channel is also protected from input overvoltages with a resistor When overvoltage is detected all relays Analog Bus and FET are opened While in the overvoltage state any attempts to close any Analog Bus or FET switch results in an error status response fro
96. e following items DMM or Channel Configure TEMPERATURE PROBE TYPE RTD 4W RTD To select the RTD type a 0 00385 or 0 00391 for the active channel choose the following item RTD TYPE gt 0 00391 0 00385 To select the nominal resistance R for the active channel choose the following item RO gt 100 OHM Remote Interface Operation You can use the CONFigure or MEASure command to select the probe type and RTD type For example the following command configures channel 3001 for 2 wire measurements of an RTD with 0 00385 use 85 to specify a 0 00385 or 91 to specify 0 00391 CONF TEMP RTD 85 83001 You can also use the SENSe command to select the probe type RTD type and nominal resistance For example the following command configures channel 1003 for 4 wire measurements of an RTD with 0 00391 channel 1003 is automatically paired with channel 1023 for the 4 wire measurement SENS TEMP TRAN FRTD TYPE 91 01003 33 2 34 Features and Functions The following command sets the nominal resistance Ro to 10000 on channel 1003 SENS TEMP TRAN FRTD RES 1000 1003 Thermistor Measurements The instrument supports 2 2 YSI Series 44004 5 YSI Series 44007 and 10 kQ YSI Series 44006 thermistors Front Panel Operation To select the thermistor function for the active channel choose the following items DMM or Channel Configure gt TEMPERATUR
97. e used in place of a channel number within a command string When shipped from the factory each channel is assigned a unique factory default label cannot be overwritten From the front panel the factory default labels are shown on the upper line of the display e g MUX CH BANK 1 MATRIX1 COL4 DIO BYTE 1 etc From the Web Interface the factory default labels are displayed as the channel number e g 1001 3020 etc If desired you can assign the same user defined label to multiple channels within the same module or on different modules i e channel labels are not required to be unique You can specify a label with up to 18 characters You can use letters A Z numbers 0 9 and the underscore character If you specify a label with more than the allowed 18 characters it will be truncated no error is generated From the Web Interface a limited number of characters can be displayed due to space constraints in the browser window If the user defined label it too long to be displayed properly it will be truncated no error is generated The instrument keeps a record of what module types are installed in each slot If a different module type is detected in a specific slot at power on all user defined channel labels for that slot are discarded If an empty slot is detected at power on any previously defined labels for that slot are preserved and will be restored if the same m
98. each relay in the instrument and stores the total count in non volatile memory on each relay module You can use this feature on any of the relay modules and the internal DMM In addition to the channel relays you can also query the count on the Analog Bus relays and bank relays You can query the state of six relays associated with function selection and isolation on the internal DMM These relays are numbered K102 through K107 You can reset the cycle count on any of the channel relays Analog Bus relays or bank relays allowed only from remote but the instrument must be unsecured See To Unsecure the Instrument for Calibration on page 70 for more information Front Panel Operation View gt RELAY CYCLES Turn the knob to read the count on the desired channel relay or Analog Bus relay 34980A User s Guide Features and Functions Remote Interface Operation To read the count on either the specified internal DMM relay or module channel relays send the following commands DIAG DMM CYCLES 2 DIAG RELAY CYCLES 1003 1013 To reset the cycle count on the specified module channel relays send the following command the instrument must be unsecured DIAG RELAY CYCLES CLEAR 1003 1911 SCPI Language Version 34980A User s Guide The instrument complies with the rules and conventions of the present version of SCPI Standard Commands for Programmable Instruments You can determine the SCPI version with which the
99. eate the crosspoint For example channel 315 represents the crosspoint connection between row 3 and column 15 all columns consisting of two digits in this case the digits are 15 See the simplified schematic on page 150 You can connect any combination of inputs and outputs at the same time However only Matrix 2 in this module connects to the Analog Buses By closing channels 921 and 922 you can connect rows 5 and 6 respectively to the internal DMM of the 34980A mainframe for voltage and resistance measurements You can connect multiple matrix modules externally and or through the Analog Buses for applications that require large matrices For information on linking multiple matrix modules refer to page 142 of this chapter When the DMM is scanning it controls ABus1 and ABusz2 relays which are on Matrix 2 Therefore consider this behavior when you are connecting matrices When the power is off matrix relays maintain state and Analog Bus relays open 149 5 Matrix Switch Modules 34932A Simplified Schematic Matrix 1 Coll Col2 Col3 Col 4 Col15 Col 16 Qo Rowi 2 H L H L Hj HL ow 4 4 4 Hi 4 4 Row 2 ow e L 4 L 4 H Row 3 4 P 4 4 NOTE Three digit channel Row 4 Q 4 4 4 4 numbers der
100. ed The state of the ABus3 and ABus4 relays is not altered and these relays remain available for use during the scan However be sure to use CAUTION when closing these relays on banks involved in the scan While the scan is running any signals present on ABus3 and or ABus4 will be joined with the scanned measurement on ABusl and ABus2 While the scan is running the instrument prevents use of all channels in banks that contain one or more channels in the specified scan list these channels are dedicated to the scan In addition the instrument prevents use of all ABusl and ABus2 relays on banks containing channels in the scan list If one or more channels configured for 4 wire measurements are included in the scan list then the rules for ABus2 relay operations are extended to the non scanned banks as well e If the ABusl relay used for current measurements channel 931 on 34921A only is not closed prior to the initiation of the scan the four current channels channels 41 through 44 are not affected by the scan However if the ABusl relay is closed the instrument will open the ABusl relay as well as the four associated current channels in a make before break fashion When you add a digital read digital modules to a scan list the corresponding channel is dedicated to the scan The instrument issues a Card Reset to make that channel an input channel the other channel is not affected While the scan is running you can per
101. ed e Dot notation addresses nnn nnn nnn nnn where nnn is a byte value must be expressed with care as most web software on the computer will interpret byte values with leading zeros as octal numbers For example 255 255 020 011 is actually equivalent to decimal 255 255 16 9 not 255 255 20 11 because 020 is interpreted as 16 expressed in octal and 011 as 9 To avoid confusion use only decimal expressions of byte values 0 to 255 with no leading zeros For example the 34980A assumes that all dot notation addresses are expressed as decimal byte values and strips all leading zeros from these byte values Thus attempting to set a Default Gateway of 255 255 020 011 will become 255 255 20 11 a purely decimal expression Be sure to enter the exact expression 255 255 20 11 in your computer web software to address the instrument Do not use 255 255 020 011 the computer will interpret this address differently due to the leading zeros The Default Gateway is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command 34980A User s Guide Features and Functions 2 Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP OFF gt AUTO IP OFF gt DEFAULT GATEWAY Remote Interface Operation SYSTem COMMunicate LAN GATEway addres
102. ed on the instrument which may enable network communication over the LAN interface 10BaseT 100BaseTx You may need to set several configuration parameters as described in the LAN configuration sections that follow A crossover LAN cable is shipped with your instrument To easily configure and verify an interface connection between the 34980A and your PC you can use the Agilent 10 Libraries Suite E2094M Agilent IO Libraries for Windows or an equivalent For more information about Agilent s 1 0 connectivity software go to www agilent com find iolib Agilent 10 Libraries Suite for Windows 98 2000 ME XP For more information and to install this software see the Automation Ready CD which is shipped with your 34980A Previous versions of the Agilent IO Libraries for Windows 98 NT 2000 ME XP For more information and to download this software from the Web go to www agilent com find iolib For more information on connecting instruments to USB LAN and GPIB and how to configure and troubleshoot these interfaces refer to the Agilent Connectivity Guide If you have installed the Agilent IO Libraries Suite you can access the guide from the Agilent IO Libraries Control icon Or you can download the guide from the Web at www agilent com find connectivity 34980A User s Guide Features and Functions 2 GPIB Interface Each device on the GPIB IEEE 488 interface must have a unique address You can set the instrument s address
103. el TH Bit 6 11 DAC 2L h 17 Bit 12 Channel Ir ACH 8 14 GND Bit 9 15 GND Bit 10 16 GND Channel 2 Birt Channel 4 GND Bit 12 21 GND Bit 13 22 GND Bit 14 23 GND Bit 15 25 GND 202 34980A User s Guide 34952T Terminal Block Multifunction Module with DIO D A and Totalizer 10 Each terminal block is labeled with the model number and the abbreviated module name In addition slot number space is available on the label for you to write the The 34980A Product Reference CD shipped with the instrument contains a the 34952T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format The 34952T provides space for breadboard and for a connector to control an external Opto 22 standard board M Breadboard Un 00000000000000 00000000000000 00000000000000 ER 00000000000000 h leeeeeeeeeeee eeeeoeeeeeoee c CH3 Gr WE 9 29 2 21 22 2 23 d lol i boleto 13 14 ue lt 25 26 rhzl27 2e A129 sorta 31 leeoeeeeeoocoo 32 BiT 178 oeoooeoooeoeee oooooooooooQ Wi T em NT CNT i DACI DAC TOTAL ZER CH7 CHS 0600000000000000000000000E l C 00000000000000 0000000000000000000000000 B 00000000000000 00000000000000 00000000000000 Breadboard 34980A Us
104. ement Functions for the MUX Modules 97 SCPI Programming Examples for the MUX Modules 98 34921A 40 Channel Armature Multiplexer with Low Thermal Offset 102 34921T Terminal Block 106 34922A 70 Channel Armature Multiplexer 107 34922T Terminal Block 111 34923A 40 80 Channel Reed Multiplexer 112 34923T 001 Terminal Block for Two or Four Wire Mode 117 34923T 002 Terminal Block for One Wire Mode 120 34924A 70 Channel Reed Multiplexer 121 34924T Terminal Block 126 34925A 40 80 Channel Optically Isolated FET Multiplexer 127 34925T 001 Terminal Block for Two or Four Wire Mode 132 34925T 002 Terminal Block for One Wire Mode 135 RE Agilent Technologies 95 4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules All low frequency multiplexer MUX switch modules feature two banks of channels that provide broad multiplexing and measuring capabilities You can connect a MUX to an external instrument and or switch multiple analog signals to the internal DMM With the 34921A 34922A 34923A and the 34924A modules you can close more than one channel in each bank simultaneously N 1 configuration As the 34925A module is protected with overvoltage circuitry you can close only one channel in each bank at one time 1 N configuration And you can connect multiple MUXes to the built in Analog Buses which allow you to scan as many as 560 2 wire differential channels or 640 1 wire single ended channels in one 34980A
105. emory overflows a status register bit is set and new readings will overwrite the first oldest readings stored The most recent readings are always preserved Each time you start a new scan the instrument clears all readings including alarm data stored in reading memory from the previous scan Therefore the contents of memory are always from the most recent scan The instrument clears all readings from memory after a Factory Reset RST command after an Instrument Preset SYSTem PRESet command or when mainframe power is cycled The instrument clears all readings from memory when a new scan is initiated when any measurement parameters are changed CONFigure and SENSe commands and when the triggering configuration is changed TRIGger commands While a scan is running the instrument automatically stores the minimum and maximum readings and calculates the average for each channel You can read these values at any time even during a scan Each reading is stored with measurement units time stamp channel number and alarm status information From the remote interface you can specify which information you want returned with the readings from the front panel all of the information is available for viewing See Reading Format on page 56 for more information Readings acquired during a Monitor are not stored in memory however all readings from a scan in progress at the same time are stored in memory The INITiate co
106. ent can also be included in a scan This includes any combination of temperature voltage resistance current frequency or period measurements on multiplexer channels A scan can also include a read of a digital channel or a read of the totalizer count on the digital modules Scanning is allowed with the following modules 34921A through 34925A Multiplexer Modules 34950A Digital I O Module digital input and counter channels only 34952A Multifunction Module digital input and totalizer channels only Automated scanning is not allowed with the other switching modules In addition a scan cannot include a write to a digital channel or a voltage output from a DAC channel You can however write your own program to manually create a scan to include these operations Rules for Scanning 42 Before you can initiate a scan you must set up a scan list to include all desired multiplexer or digital channels Channels which are not in the scan list are skipped during the scan By default the instrument scans the list of channels in ascending order from slot 1 through slot 8 channels are reordered as needed If your application requires non ordered scanning of the channels in the present scan list see Non Sequential Scanning on page 57 Measurements are taken only during a scan and only on those channels which are included in the scan list You can store at least 500 000 readings in memory and all readings are automatically
107. er s Guide Space and wiring provided for user supplied Opto 22 connector 203
108. erations Preset State Scan List No Change Reading Memory Min Max and Average Sweep Count Trigger Interval Monitor in Progress All Readings are Cleared All Statistical Data is Cleared No Change No Change Stopped Mx B Scaling Preset State Scaling State Gain Factor M Offset Factor B Scale Label No Change No Change No Change No Change 34980A User s Guide 34980A User s Guide Module Hardware Features and Functions Preset State Multiplexer Modules Matrix Modules GP Modules RF Modules Microwave Modules System Control Modules All Channels Open 2 Wire 1 Wire Mode No Change All Channels Open 2 Wire 1 Wire Mode No Change All Channels Open Channels b01 and b02 Selected b Bank 34946A Channels 101 and 201 to COM 34947A Channels 101 201 and 301 to COM 34951A DACs 0 Vdc Trace Waveforms Cleared 34952A DIO Ports Input Count 0 DACs 0 Vdc System Related Operations Preset State Display State On Error Queue Errors Not Cleared Stored States No Change System Date No Change System Time No Change Temperature Units C 2 87 2 Features and Functions 88 34980A User s Guide e Agilent 34980A Multifunction Switch Measure Unit amp User s Guide en o e o e 3 eu9 Introduction to the Plug In Modules 9 forthe 34980A Slot and Channel Addressing Scheme 90 Interconnection Solutions Overview 91 Module Considerations
109. es Matrix Switch Modules 138 SCPI Programming Examples for the Matrix Modules 139 Linking Multiple Matrix Modules 142 34931A Dual 4x8 Armature Matrix 144 34931T Terminal Block 147 34932A Dual 4x16 Armature Matrix 149 34932T Terminal Block 152 34933A Dual Quad 4x8 Reed Matrix 153 34933T 001 Terminal Block for Two Wire Mode 157 34933T 002 Terminal Block for One Wire Mode 161 RE Agilent Technologies 137 5 Matrix Switch Modules Matrix Switch Modules The matrix switch modules for the 34980A offer a convenient way for you to connect multiple instruments to multiple points on your DUT For a lower cost and better specification alternative you can connect both matrix and multiplexer MUX modules Although flexible it is possible to connect more than one source at the same time with a matrix Make sure that dangerous or unwanted conditions are not created by these connections The family of matrix switch modules consists of the 34931A with two dual matrices of latching armature switches Each matrix is organized in a 4 row by 8 column configuration the 34932A with two dual matrices of latching armature switches Each matrix is organized in a 4 row by 16 column configuration e the 34933A with non latching reed switches which you can configure for differential 2 wire mode which has two dual matrices Each matrix is organized in a 4 row by 8 column configuration single ended 1 wire mode which has
110. esolution on channel 1003 SENS RES RES 100 1003 Custom A D Integration Time Integration time is the period of time the internal DMM s analog to digital A D converter samples the input signal for a measurement Integration time affects the measurement resolution for better resolution use a longer integration time and measurement speed for faster measurements use a shorter integration time Integration time is specified in number of power line cycles PLCs Select from 0 02 0 2 1 2 10 20 100 or 200 power line cycles The default is 1 PLC Only integral number of power line cycles 1 2 10 20 100 or 200 PLCs provide normal mode line frequency noise rejection You can also specify integration time directly in seconds this is called aperture time Select a value between 300 us and 1 second with 4 us resolution The only way to control the reading rate for ac measurements is by changing the channel delay see Channel Delay on page 53 or by setting the ac filter to the highest frequency limit see AC Low Frequency Filter on page 36 The specified integration time is used for all measurements on the selected channel If you have applied Mx B scaling or have assigned alarms to the selected channel those measurements are also made using the specified integration time Measurements taken during the Monitor function also use the specified integration time 34980A User s Guide 19 2 Featu
111. etermine if a client IP address is on the same local subnet When a client IP address is on a different subnet all packets must be sent to the Default Gateway Contact your network administrator to determine if subnetting is being used and for the correct Subnet Mask If you change the Subnet Mask you must cycle power on the 34980A to activate the setting The default Subnet Mask for the 34980A is 255 255 0 0 If DHCP is enabled the specified Subnet Mask is not used However if the DHCP server fails to assign a valid IP address the currently configured Subnet Mask will be used Dot notation addresses nnn nnn nnn nnn where nnn is a byte value must be expressed with care as most web software on the computer will interpret byte values with leading zeros as octal numbers For example 255 255 020 011 is actually equivalent to decimal 255 255 16 9 not 255 255 20 11 because 020 is interpreted as 16 expressed in octal and 011 as 9 To avoid confusion use only decimal expressions of byte values 0 to 255 with no leading zeros For example the 34980A assumes that all dot notation addresses are expressed as decimal byte values and strips all leading zeros from these byte values Thus attempting to set a Subnet Mask of 255 255 020 011 will become 255 255 20 11 a purely decimal expression Be sure to enter the exact expression 255 255 20 11 in your computer web software t
112. first two commands close channel 3 for a module in slot 2 then channel 5 for that module The last command opens both channel 3 and channel 5 ROUTe CLOSe 2003 ROUTe CLOSe 2005 ROUTe OPEN 92003 2005 Example Querying channels for open or close state The following command returns a 1 true or 0 false state of channel 016 for a module in slot 3 ROUTe CLOSe 3016 ROUTe CLOSe 3016 Returns a 1 ROUTe OPEN 3016 Returns a 0 Reading Jumper State and System Identity Example Querying the power failure state of 5Arelays The following command returns the position of the power fail jumper either MAIN all relays maintain their present state when power fails or OPEN all relays open when power fails for a module in slot 4 If this command is sent to a module other than the 34937A or 34938A NONE is returned no error is generated SYSTem MODule PFAil JUMPer AMP5 4 Example Querying the system for module identify all modules The following command returns the identify of the module installed in slot 7 SYSTem CTYPe 7 34980A User s Guide 34980A User s Guide General Purpose Switch Modules 6 Reading Cycle Count and Resetting Modules to Power On State Example Reading the cycle count for a relay all switch modules The following command returns the relay cycle count on channel 7 and channel 16 for a module in slot 1 DIAGnostic RELay CYCLes 91007 1016 Example Clearing the cycle
113. five storage locations in non volatile memory to store instrument states numbered 1 through 5 You can assign a user defined name to each of locations 1 through 5 34980A User s Guide You can store the instrument state in any of the five locations but you can only recall a state from a location that contains a previously stored state The instrument stores the state of all plug in modules including all channel configurations scanning setups and Mx B scaling values However note that only the measurement attributes of the currently selected function range resolution etc will be preserved in the stored states Before recalling a stored state the instrument verifies that the same plug in module types are installed in each slot If a different module type is installed the instrument will perform the equivalent of a Factory Reset RST command When shipped from the factory storage locations 1 through 5 are empty You can change the factory configuration such that a Factory Reset RST command is issued when power is restored You can name a location from the front panel or over the remote interface but you can recall a named state only from the front panel The name can contain up to 12 characters The first character must be a letter A Z but the remaining 11 characters can be letters numbers 0 9 or the underscore character Blank spaces are not allowed An error is generated if you specify a name with more than 12 c
114. form low level control operations on any channels on the digital modules that are not in the scan For example you can output a DAC voltage or write to a digital channel even if the totalizer is part of the scan list However you cannot change any parameters that affect the scan channel configuration scan interval Card Reset etc while a scan is running If a scan includes a read of the totalizer the count is reset each time it is read during the scan only when the totalizer reset mode is enabled 34980A User s Guide 43 2 44 Features and Functions At the end of the scan the last channel that was scanned will be opened as well as any Analog Bus relays used during the scan Any channels that were opened during the scan will remain open at the completion of the scan If you abort a scan that is running the instrument will terminate any reading in progress readings are not cleared from memory If a scan is in progress when the command is received the scan will not be completed and you cannot resume the scan from where it left off Note that if you initiate a new scan all readings are cleared from memory You can use either the internal DMM or an external instrument to make measurements of your configured channels However the 34980A allows only one scan list at a time you cannot scan some channels using the internal DMM and others using an external instrument Readings are stored in 34980A memory only when the intern
115. four quad matrices Each matrix is organized in a 4 row by 8 column configuration Safety Interlock Analog Buses of the 34980A can carry 300 V signals MUX and matrix modules with Analog Bus relays have a hardware Safety Interlock feature that forces Analog Bus relays open when their associated D sub connector faceplate interlock pins lose continuity This prevents signals from the Analog Buses from being present on D sub connector pins Optional Agilent terminal blocks automatically provide continuity for the interlock pins When the terminal blocks are not used you must provide continuity for the interlock pins in the DUT assembly See pinout drawings and tables in this chapter for the location of interlock pins on the module of interest Matrix modules have Analog Bus relays on Bank 2 only and thus have interlock pins on only their Bank 2 connectors Normally if you attempt to connect to the Analog Buses without a terminal block or cable connected an error is generated The SYSTem ABUS INTerlock SIMulate command allows you to temporarily disable errors generated by the Safety Interlock feature and enables the Safety Interlock simulation mode Although Safety Interlock errors are suppressed in this mode the actual Analog Bus relays affected by the Safety Interlock are disabled as long as no terminal block or cable is connected to the module 138 34980A User s Guide Matrix Switch Modules 5 SCPI Programming Examples for the Matri
116. frequency filter Input Frequency Default Settling Delay Minimum Settling Delay 3 Hz to 300 kHz Slow 7 seconds reading 1 5 seconds 20 Hz to 300 kHz Medium 1 second reading 200 ms 200 Hz to 300 kHz Fast 0 12 seconds reading 20 ms The CONFigure and MEASure commands automatically select the 20 Hz medium filter The instrument selects the default 20 Hz medium filter after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation DMM or Channel Configure gt AC FILTER Remote Interface Operation Specify the lowest frequency expected in the input signal on the specified channels The instrument selects the appropriate filter based on the frequency you specify see table above SENSe VOLTage AC BANDwidth 3 20 200 lt ch list If you omit the optional ch list parameter the command applies to the internal DMM 34980A User s Guide Features and Functions 2 Resistance Measurement Configuration This section contains information to help you configure the instrument for making resistance measurements Use the 2 wire method for ease of wiring and higher density or use the 4 wire method for improved measurement accuracy The measurement ranges shown below 100Q 1kQ 10 100 1MQ 10 MQ 100 MQ Autorange Offset Compensation 34980A User s Guide Of
117. fset compensation removes the effects of any dc voltages in the circuit being measured The technique involves taking the difference between two resistance measurements on the specified channels one with the current source turned on and one with the current source turned off Applies only to 2 wire and 4 wire resistance measurements on the 1000 1 and 10 ranges Four wire measurements are not allowed on the multiplexer modules configured for the 1 wire single ended mode see page 27 e For 4 wire resistance measurements the instrument automatically pairs channel n in Bank 1 with channel n 20 in Bank 2 84921A 34923A 34925A or n 35 34922A 34924A to provide the source and sense connections For example make the source connections to the HI and LO terminals on channel 2 in Bank 1 and the sense connections to the HI and LO terminals on channel 22 or 37 in Bank 2 The coNFigure and MEASure commands automatically disable offset compensation The instrument disables offset compensation after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation DMM or Channel Configure gt OFFSET COMP Remote Interface Operation SENSe FRESistance OCOMpensated OFF ON G ch list SENSe RESistance OCOMpensated OFF ON e ch list If you omit the optional ch list parameter the command applies to
118. gilentTechnologies 349804 3 CO 8 2 uem wat was 99 9 1 0G 390 Measure 13 12 1 On Standby switch remove the power cord 2 Utility menu contains settings for Remote 1 0 LAN GPIB and USB Date and Time and other system related instrument parameters This switch is standby only To disconnect the mains from the instrument E oss 3 Store recall menu allows you to save and recall up to six instrument setups 4 Control keys directly control module actions 5 Number keypad enters numerical characters 6 Exponent 7 Cancel key exits a menu without saving changes 8 Arrow keys move cursor positions 9 Knob enters alphanumeric characters selects slots channels and navigates menus 10 Enter key steps you through a menu or saves number entries 11 Running a program puts the display into remote and disables the front panel keys Local takes you out of remote mode and enables the front panel keys 12 Configure keys select functions and set function parameters 13 Measure keys execute and monitor measurements Depending on which measurement key you use you can have complete direct control over the switching and measurement operation or you can have the 34980A automatically control these to capture the desired data 34980A User s Guide Introduction to the 34980A 1 Rear Panel at a Glance
119. gram and the table below R represents row and C represents column Pin GND No Connect pins 11 12 17 18 31 32 34 and 45 46 C4L C12H 121 R8H R8L C5H CSL C13H C13L NC NC C11H C11L C9L C2H C2L C14H Ci4L R6L NC C7H C7L C15H C15L Interlock GO QO e Q OOOO NC Interlock Q9 2 amp amp e e occ ood e 0 NC C3H C3L C1H CiL R7H R7L C6H C6L C10H C10L NC NC C16H C16L R5H RSL Q G9 00 6 6 O0 00 As safety eature Interlock pins 17 and 33 must be shorted to enable the Analog Bus relays which are on Matrix 2 to close The optional 34932T terminal block shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 34980A User s Guide NOTE In this diagram and the table below R represents row and C represents column Description Description R5H 49 Interlock 17 R5L 50 Interlock 33 R6H 27 connect pins R6L 28 1 12 18 31 32 R7H 39 B4 and 45 46 R7L 40 R8H 5 R8L 6 C1H 37 CIL 38 151 5 5 Matrix Switch Modules 34932T Terminal Block Although they have separate screw type connectors rows labeled the same on a matrix are electrically connected
120. haracters A Factory Reset RST command does not affect the configurations stored in memory Once a state is stored it remains until it is overwritten or specifically deleted 63 2 64 Features and Functions Front Panel Operation Store Recall gt STORE RECALL DELETE RENAME AUTO To rename a location select RENAME Press the arrow keys to move the cursor to a specific position and then turn the knob to select the desired letter or number To clear the name of a location change each character to starting with the rightmost character and then press the left arrow key to move to the next character To automatically recall a specific location when power is restored select AUTO Use the knob to scroll through the available locations containing a stored state Remote Interface Operation Use the following commands to store and recall instrument states SAV 1 2 3 4 5 RCL 1 2 3 4 5 To assign a user defined name to a stored state to be recalled from the front panel see the following example From the remote interface you can only recall a stored state using a number 1 through 5 MEM STAT NAME 1 TEST RACK 1 To configure the instrument to automatically recall location 2 when power is restored send the following commands SAV 2 MEM STATE RECALL SELECT 2 MEM STATE RECALL AUTO ON Error Conditions When the front panel ERROR annunciator turns on one or more command syntax or hardware errors
121. has no affect on the temperature measurement units currently selected The instrument selects Celsius when the probe type is changed and after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the units setting Front Panel Operation DMM or Channel Configure gt TEMPERATURE gt UNITS Remote Interface Operation UNIT TEMP C F K e ch list 30 34980A User s Guide Features and Functions 2 Thermocouple Measurements The instrument supports the following thermocouple types B E J N R S and T using ITS 90 software conversions The default is a J Type thermocouple Thermocouple measurements require a reference junction temperature For the reference junction temperature you can use an internal measurement the module 34921A only an external thermistor or RTD measurement or a known fixed junction temperature The nternal reference junction source is valid only on channels 1 through 40 on the 34921A with the 34921T terminal block installed If you select an external reference the instrument makes thermocouple measurements relative to a previously stored RTD or thermistor measurement stored in a reference register To store a reference temperature first configure a multiplexer channel for an RTD or thermistor measurement Then assign the measurement from that channel as the external reference When you initiate a measure
122. hat the instrument automatically adds to each channel Scan List AN 5 6 Chi Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 _ ty ote ty ote ty ote ty oe s 0 to 60 seconds Channel delay You can set the channel delay to any value between 0 seconds and 60 seconds with 1 ms resolution You can select a different delay for each channel The default channel delay is automatic the instrument determines the delay based on function range integration time and ac filter setting see Automatic Channel Delays on page 54 You can select a unique delay for every channel on the module The channel delay is valid only while scanning If no channels have been assigned to the scan list the specified channel delay is ignored no error is generated 34980A User s Guide 53 2 54 Features and Functions To ensure you are getting the most accurate measurements possible use care when setting the channel delay less than the default value automatic The default channel delay is designed to optimize parameters such as settling time for the most accurate measurements The coNFigure and MEASure commands set the channel delay to automatic A Factory Reset RST command also sets the channel delay to automatic Front Panel Operation Channel Configure gt CHANNEL DELAY gt TIME Once you have added the specified channel to the scan list the channel delay choice will be vis
123. he instrument will clear the previous set of readings from memory To stop a measurement in progress use the ABORt command To view the readings in memory use the FETCh command the readings are not erased when you read them Scanning Mode In the Scanning Mode the 34980A automatically controls a sequence of measurements using the internal DMM possibly across multiple channels and stores the results in memory The 34980A closes and opens the appropriate channel relays and Analog Bus relays required for the sequence The following general rules apply to the Scanning Mode for more information on using the Scanning Mode see Scanning on page 42 Any channel that can be read by the instrument can also be included in a scan A scan can also include a read of a digital channel or a read of the totalizer count on the digital modules Before you can initiate a scan you must set up a scan list to include all desired multiplexer or digital channels Channels which are not in the scan list are skipped during the scan The Analog Bus relays are automatically opened and closed as required during the scan to connect to the internal DMM for the measurement For example all 2 wire measurements use the 1 MEAS relays for 4 wire measurements the ABus2 SENS relays are used in addition to the 1 relays Each time you initiate a new scan the instrument will clear the previous set of readings from memory 13 2
124. he internal DMM of the 34980A mainframe for voltage and resistance measurements You can connect multiple matrix modules externally and or through the Analog Buses for applications that require large matrices For information on linking multiple matrices refer to page 142 of this chapter When the DMM is scanning it controls ABus1 and ABusz2 relays which are on Matrix 2 Therefore consider this behavior when you are connecting matrices When the power is off matrix relays maintain state and Analog Bus relays open 34980A User s Guide 34931A Simplified Schematic Row 1 Row 2 Row 3 Row 4 Row 1 Row 2 Row 3 Row 4 Matrix Switch Modules Matrix 1 Coll Col2 Col4 Colb Col 6 Col7 Col8 oo oo O oo oo HL HL HL Hj HL H4 gt 4 4 4 Q H4 s o 4 NOTE Three digit channel numbers derived from the intersection of the rows and columns columns having two digits The intersection shown here represents Channel 304 Row 3 Column 4 Matrix 2 Analog Buses Coll Col2 Col4 Colb Col6 Col7 Col8 oo oo oo OO BQ H t H 5L H L H L ABus1 L 4 gt 20 DMM o t 921
125. ible in the menu Interface Operation The following command add a 2 second channel delay to the specified channels ROUT CHAN DELAY 2 1003 1013 Automatic Channel Delays If you do not specify a channel delay the instrument selects a delay for you The delay is determined by the delay based on function range integration time and ac filter setting DC Voltage Thermocouple DC Current for all ranges Integration Time Channel Delay PLC gt 1 2 0 ms PLE lt 1 1 0 ms Resistance RTD Thermistor 2 and 4 wire Channel Delay Channel Delay Range for PLC 1 Range for PLC lt 1 1000 2 0 ms 1000 1 0 1kQ 2 0 ms 1kQ 1 0 ms 10 2 0 ms 10 kQ 1 0 ms 100 kQ 25 ms 100 20 ms 1MQ 30 ms 1MQ 25 ms 10 MQ 200 ms 10 MQ 200 ms 100 MQ 200 ms 100 MQ 200 ms 34980A User s Guide Features and Functions 2 AC Voltage AC Current for all ranges AC Filter Channel Delay Slow 3 Hz 7 0 seconds Medium 20 Hz 1 0 second Fast 200 Hz 120 ms Frequency Period AC Filter Channel Delay Slow 3 Hz 600 ms Medium 20 Hz 300 ms Fast 200 Hz 100 ms Digital Input Totalize Channel Delay 0 seconds Front Panel Operation Channel Configure gt CHANNEL DELAY gt AUTO Once you have added the specified channel to the scan list the channel delay choice will be visible in the menu Interface Operation The following command enables an automatic channel delay on the spec
126. ified channels ROUT CHAN DELAY AUTO ON 1003 1013 Selecting a specific channel delay using the ROUTe CHANnel DELay command see Channel Delay on page 53 disables the automatic channel delay 34980A User s Guide 55 2 56 Features and Functions Reading Format During a scan the instrument automatically adds a time stamp to all readings and stores them in memory Each reading is stored with measurement units time stamp channel number and alarm status information From the remote interface you can specify which information you want returned with the readings from the front panel all of the information is available for viewing The examples below show a reading in relative and absolute format with all fields enabled Relative Format Default 2 61950000 01 000000000 017 1003 2 od 1 Reading with units 26 195 3 Channel number 2 Time since start of scan 17 ms 4 Alarm limit threshold crossed 0 No Alarm 1 LO 2 HI Absolute Format 2 61950000E 01 C 2004 11 21 15 30 23 000 1003 2 1 Reading with units 26 195 C 4 Channel number 2 Date November 21 2004 5 Alarm limit threshold crossed 3 Time of day 3 30 23 000 PM 0 No Alarm 1 LO 2 HI The reading format applies to all readings being removed from the instrument from a scan you cannot set the format on a per channel basis The CONFigure and MEASure commands automatically turn
127. implified schematics on page 130 and page 133 If you are using an Agilent 349xxT terminal block to connect your DUT to this module be sure to use the terminal block that corresponds to your module configuration mode Use the 34925T 001 terminal block for differential mode 2 wire or 4 wire configuration Use the 34925T 002 terminal block for single ended mode 1 wire configuration Refer to drawings on page 132 and page 135 You can confirm the mode in which your module is configured by using the SYSTem CTYPe slot number program command This command returns the identity of the plug in module in the specified slot Whenever you change from 2 or 4 wire mode to 1 wire mode or the reverse you must cycle power on the 34980A for the configuration to take effect Two Wire e two independent 20 channel 2 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Bus relays one 40 channel 2 wire MUX You must use external wiring or connect through the Analog Bus relays to for this configuration 34980A User s Guide 127 4 128 Low Frequency Multiplexer Switch Modules Four Wire one 20 channel 4 wire MUX This configuration requires using neither external wiring nor connecting through the internal Analog Buses For 4 wire resistance measurements the instrument automatically pairs channel n on Bank 1 with channel n 20 Bank 2 to provide the source and sens
128. ing a reading or for pacing a burst of readings You can add a trigger delay which adds a delay between the trigger signal and the first sample taken by the internal DMM not used in Scanning Mode The programmed trigger delay overrides the default trigger delay that the instrument automatically adds to the measurement Trigger 1 Sample Count Trigger 2 Sample Count AN NN t Trigger Delay 0 to 3600 seconds L Trigger delay e The default trigger delay is Automatic see Automatic Trigger Delays on page 23 the instrument determines the delay based on function range and integration time e If you specify a trigger delay other than Automatic that same delay is used for all functions and ranges e If you have configured the instrument to take more than one reading per trigger sample count gt 1 the specified trigger delay is inserted between the trigger and the first reading in the sample burst e The CONFigure and MEASure commands set the trigger delay to Automatic The instrument selects an automatic trigger delay after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting 22 34980A User s Guide Automatic Trigger Delays Features and Functions 2 If you do not specify a trigger delay the instrument selects a delay for you The delay is determined by the function range integration time an
129. instrument is in compliance by sending a command from the remote interface You can query the SCPI version from the remote interface only The SCPI version is returned in the form YYYY V where YYYY represents the year of the version and V represents a version number for that year for example 1994 0 Remote Interface Operation SvysTem VERSion 2 2 Features and Functions Calibration Overview This section gives a brief introduction to the calibration features of the instrument and plug in modules For a more detailed discussion of the calibration procedures see the Agilent 34980A Service Guide Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized calibrations of the instrument The specified code is used to unsecure the mainframe and all installed modules When you first receive your instrument it is secured Before you can calibrate the instrument you must unsecure it by entering the correct security code The security code is set to AT34980 when the instrument is shipped from the factory The security code is stored in non volatile memory in the mainframe and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command The security code can contain up to 12 characters The first character must be a letter A Z but the remaining 11 characters can be letters numbers
130. ion These 20 channels are split 10 to a bank However note that Analog Bus relays count half as much as channel relays in that total For example with one Analog Bus relay closed you can close up to a maximum of 19 channel relays If you try to close more than the allowed number of channels you will receive an error message 34980A User s Guide 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 Four Wire Mode This 20 channel 4 wire MUX This configuration requires neither using external wiring nor connecting through the internal Analog Buses For 4 wire resistance measurements the instrument automatically pairs channel on Bank 1 with channel n 20 Bank 2 to provide the source and sense connections Four wire controls occur only when doing 4 wire measurement operations through the internal DMM such as MEASure FRESistance or scanning a channel previously configured as 4 wire One Wire Mode two independent 40 channel 1 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Buses one 80 channel 1 wire MUX You must use external wiring or connect through the internal Analog Bus for this configuration Because all bank relays supply only HI signals you can apply a LOW signal through COM1 L or COM2 L when you are making 2 wire resistance measurements in 1 wire mode In 1 wire mode you can close no more than 40 channels simultaneously due to
131. ive to ten second delay remove the sheet metal cover from the module and move the position of the jumper mounted on the module See the next drawing for the jumper s location on the module WARNING Do not connect either the 34937A or 34938A module directly to a mains power outlet If it is necessary to measure a mains voltage or any circuit where a large inductive load may be switched you must add signal conditioning elements to reduce the potential transients before they reach the module or the Analog Buses 1 1 tg MT Maintain 3 5 5Amp relays U205 power down state C301 Frerrrrrrppprrrep n PBRRRRRRRRRRRRRBRR 34980A User s Guide 165 6 166 General Purpose Switch Modules 34937A and 34938A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the general purpose switch modules The slot and channel addressing scheme used in these examples follow the form scec where s is the mainframe slot number 1 through 8 and cec is the channel number For complete information on the SCPI commands used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Opening and Closing Channels Example Closing and opening channels The
132. ived from the intersection of the rows and columns columns having two digits The intersection shown here represents Channel 315 Row 3 Column 15 Matrix 2 Col 1 Col2 Col3 Col4 Col15 Col 16 oo SN H t H fe H fe H L H Row l L O 921 H H 4 4 4 o T o howz LI 0 922 H H Row 3 4 4 4 oT o L L 4 Bo H H 5 o T o Row 4 l i 4 bo NOTE Although columns are numbered the same on the two matrices they are electrically separate NOTE Matrix relays Armature latching Analog Bus relays Armature non latching 150 N R 34980A User s Guide 34932A D Sub Connectors Matrix 1 Matrix Switch Modules Matrix 1 Matrix2 o For orientation the D sub connector end of the module is facing you C4L C12H 121 R4L C5H CSL C13H C13L NC NC C11HC11L C9H C9L C2H C2L C14H C14L R2H R2L C8H C8L NC C7H C7L C15H C15L NC O Oo o e e o 0 8 NC NC GND 9 amp amp OG GO 9 6 NC 1 1 CiL R3L C6H C6L C10H C10L 9 amp 00 6 6 O NC NC 16 C16L RIH Description Description C2H 23 13 3 RIL 50 4 R2H 27 R2L 28 R3H 39 R3L 40 R4H 5 R4L 6 1 37 CIL 38 Matrix 2 NOTE In this dia
133. l Technology Licenses 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 Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or sub contract Software is delivered and licensed as Commercial computer soft ware as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Gov ernment will receive no greater than Restricted Rights as defined in FAR 52 227 19 1 2 June 1987 U S Govern ment users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data 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
134. le 34980A mainframe 34980A User s Guide RF Multiplexer Switch Modules 7 Installing SMA Connectors When installing SMA connectors on the 34941A module it is recommend that you tighten them to 0 8 1 1 Nm 7 10 in Ibs of torque CAUTION SMA connectors are easily damaged especially when tightening a neighboring connector with a wrench To help prevent damage and contamination do not remove a connector s protective cap until immediately prior to installing a cable on that connector Isolating Connector Banks 34980A User s Guide You can configure each bank on the RF MUX modules to be either isolated or chassis grounded The modules come with chassis grounded metal shoulder washers installed on all connectors in each bank of relays If you want to isolate a bank from the other banks and from chassis ground you must remove the five metal washers in that bank and replace them with the provided plastic shoulder washers To isolate a bank from other banks and chassis ground install the provided plastic shoulder washers m di on the connectors in the bank to be isolated When installing the plastic shoulder washers use 7 in lbs of torque The 34941A and 34942A are shipped Pd from the factory chassis grounded with metal shoulder washers installed on all connectors each bank of relays O 177 7 178 RF Multiplexer Switch Modules 34941A and 34942A SCPI Programming Examples The programming exa
135. led module is exposed no terminal block or cable is connected the Analog Bus relays and current channels are open and disconnected from the Analog Buses See page 138 for further information The 34980A Product Reference CD shipped with the instrument contains a the 34933T 1 wire Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34933T 002 terminal block that corresponds to the 1 wire configuration mode Note that an error will not be generated if you have installed a terminal block that doesn t match the present module configuration OOOOOOOO00000 oOoOOOOOO000000 als Tos T 51 EA MATRIX 112 3l 4 slelzia 12 314 ROWS COLUMNS 100 INRUSH COLUMNS 100 0 INRUSH ROWS 1 2 4 1 2 AN MATRIX 5 NOTE Analog ooooOooOoooOoO0OO0Q OOOOOOOOOOO0 Bus connections are on Matrix 3 ooooooooooooQ p p oooooooooocoo and 4 1121 sl 112 31 4l sl el 7l a MATRIX ms MARX 11 2l sl alnlelzla ii2is 4 ROWS COLUMNS 0 0 INRUSH COLUMNS INRUSH ROWS CHO 1 2 3 4 1 2 3 4 5 6 7 MATRIX MATRIX 1121 3 415 6 7 8 1 2 3 4 OOOOOOOO00000 OOOOOO000000 1 U aj
136. ll be scanned in the order presented When you specify a range of channels in the scan list the channels are always sorted in ascending order regardless of the scan order setting Therefore 1009 1001 will always be interpreted as 1001 1002 1003 etc f you define a scan list with the sequential mode enabled and later disable the mode the scan list will not be reordered however the scan list will be treated as a non sequential list thereafter If you have defined a scan list with the sequential mode disabled OFF and later enable the mode the channels will be reordered Non sequential scan lists are not stored as part of the instrument state by the SAV command in this case the ordered mode will be enabled and the scan list will be empty when the instrument state is restored RCL command 34980A User s Guide 57 2 58 Features and Functions The scan order setting is stored in volatile memory and the ordered mode will be enabled when power is turned off or after a Factory Reset RST command Remote Interface Operation ROUTe SCAN ORDered OFF ON Viewing Readings Stored in Memory During a scan the instrument automatically adds a time stamp to all readings and stores them in memory You can read the contents of memory at any time even during a scan Reading memory is not cleared when you read it You can store at least 500 000 readings in memory and all readings are automatically time stamped If m
137. lock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34925T 002 terminal block that corresponds to the 1 wire configuration mode An error will not be generated if you have installed a terminal block that doesn t match the present module configuration The 34980A Product Reference CD shipped with the instrument contains a the 34925T 1 wire mode Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format Un iA ro eooooooooooQ 1 Pal p opp r ef 920 51 52 53 5 55 s6 57 s8 59 00 OOOOOO000000 a AAAA oooooooooooQ OoOOOOOOOO0O000 C _ o rllla J ooooooooo0o0o0Q OOOOOOOO00000 UL 1 NU A 34980A User s Guide 135 4 Low Frequency Multiplexer Switch Modules 136 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide e0 5 Matrix Switch Modul
138. losing data stored in memory if memory becomes full new readings will overwrite the first readings stored The specified number of readings are cleared from memory starting with the oldest reading DATA REMOVE 12 34980A User s Guide 59 2 Features and Functions Monitor Mode In the Monitor mode the instrument takes readings as often as it can on a single channel or the internal DMM even during a scan This feature is useful for troubleshooting your system before a test or for watching an important signal Any channel that can be read by the instrument can be monitored This includes any combination of temperature voltage resistance current frequency or period measurements on multiplexer channels You can also monitor a digital input channel or the totalizer count on the digital modules You can also monitor measurements on the internal DMM independent of any channel measurements Readings acquired during a Monitor are not stored in memory but they are displayed on the front panel however all readings from a scan in progress at the same time are stored in memory The Monitor mode is equivalent to making continuous measurements on a single channel or the internal DMM with an infinite scan count Only one channel can be monitored at a time but you can change the channel being monitored at any time A scan in progress always has priority over the Monitor function Channels do not have to be part of an active scan list
139. m the module Once in the overvoltage state you must restore normal module operation with one of these actions using the SYSTem CPON slot command This affects only the module specified 34980A User s Guide 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 using the RST command This command resets the mainframe and all installed modules to the Factory configuration This affects all installed modules cycling system power This affects all installed modules If the overvoltage situation is not resolved clearing the overvoltage will result in a new overvoltage event occurring immediately Further FET protection is assured only as one channel in each bank is closed at any time Thus this module will operate as only a 1 N MUX module For more information about FET channel closures refer to page 98 129 4 Low Frequency Multiplexer Switch Modules 34925A Simplified Schematic for Two or Four Wire Mode This drawing shows two independent 20 channel 2 wire MUXes To change configuration modes use the SYSTem MODule WIRE MODE command Bank 1 NOTE The three digit number assigned to each switch represents the channel number e 001 225 006 011 LA 016 NOTE L L L L T1 o o _ 0 Bank relays FET non latching 002 __ 007 02 017 __ Analog Bus relays Armature non latching 0 ot ot 00
140. ment on an external reference channel the acquired temperature is stored in volatile memory in the reference register Subsequent thermocouple measurements use the stored temperature as their reference The temperature remains in memory until you measure a subsequent external reference value in the reference register or remove the mainframe power If you select a fixed reference temperature specify a value between 20 C and 80 C always specify the temperature in C regardless of the temperature units currently selected The accuracy of the measurement is highly dependent upon the thermocouple connections and the type of reference junction used Use a fixed temperature reference for the highest accuracy measurements you must maintain the known junction temperature The internal isothermal block reference 34921A only requires no external wiring but provides lower accuracy measurements than a fixed reference The thermocouple check feature allows you to verify that your thermocouples are properly connected for measurements If you enable this feature the instrument measures the channel resistance after each thermocouple measurement to ensure a proper connection If an open connection is detected greater than 5 kQ on the 10 kQ range the instrument reports an overload condition for that channel or displays OPEN T C on the front panel 34980A User s Guide 31 2 32 Features and Functions Front Panel Operation T
141. mmand stores readings in memory Use the FETCh command to retrieve stored readings from memory the readings are not erased when you read them 34980A User s Guide Features and Functions 2 Front Panel Operation View gt READINGS Remote Interface Operation The following command retrieves stored readings from memory the readings are not erased FETCh Use the following commands to query the statistics on the readings stored in memory for a specific channel or from the internal DMM These commands do not remove the data from memory CALC AVER MIN 3005 Minimum reading on channel CALC AVER MIN TIME 3005 Time minimum was logged CALC AVER MAX 3005 Maximum reading on channel CALC AVER MAX TIME 3005 Time maximum was logged CALC AVER AVER 3005 Average of all readings on channel CALC AVER COUNT 3005 Number of readings taken on channel CALC AVER PTPEAK 3005 Peak to peak maximum minimum The following command retrieves the last reading taken on channel 1 on the module in slot 3 during a scan DATA LAST 093001 The following command clears the contents of statistics memory for the selected channel CALC AVER CLEAR 93001 Use the following command to determine the total number of readings stored in memory all channels from the most recent scan DATA POINTS The following command reads and clears the specified number of readings from memory This allows you to continue a scan without
142. mples below provide you with SCPI command examples to use for actions specific to the RF MUX switch modules The slot and channel addressing scheme used in these examples follow the form scec where s is the mainframe slot number 1 through 8 and cec is the channel number For information on specific configurations refer to the simplified schematic on page 179 For complete information on the SCPI commands used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Example Closing channels You can only close channels on the RF MUX modules You cannot open channels When you close a channel any already closed channels automatically open With this one step operation the relays switch in the proper order that avoids momentary connection of the wrong input to the multiplexer output The following command closes channel 03 on Bank 1 of an RF MUX module installed in slot 5 ROUTe CLOSe 5103 Example Querying channels for open or close state The following commands returns the close or open state of channel 33 of a module installed in slot 5 ROUT CLOSe 5033 ROUT OPEN 5033 Example Querying the system for module identify The following command returns the identify of the module installed in slot 7 SYSTem CTYPe 7 Example Reading the cycle count for a relay On these modules the sign
143. multiple 34933A matrix modules See the simplified schematics on page 155 and page 159 34980A User s Guide Matrix Switch Modules Module 1 Increase number of rows by connecting through columns A nm n 1 8 or 16 Columns 8 Rows n 1 n Module 2 n be80r 16 A N Increase number of columns by connecting through rows 16 or 32 Columns 1 2 Module 1 Module 2 Buses Bp foo fro la n be 8 or 16 34980A User s Guide 143 5 Matrix Switch Modules 34931A Dual 4x8 Armature Matrix 144 The 34931A dual 4x8 armature matrix contains two matrices each with 32 2 wire crosspoint latching armature relays organized in a 4 row by 8 column configuration Every row and column are made up of two wires each a high H and a low L Each crosspoint relay has a unique channel number representing the row and column that intersects to create the crosspoint For example channel 304 represent the crosspoint connection between row 3 and column 4 all columns consisting of two digits in this case the digits are 04 See the simplified schematic on page 145 You can connect any combination of inputs and outputs at the same time However only Matrix 2 in this module connects to the Analog Buses By closing channels 921 and 922 you can connect rows 5 and 6 respectively to t
144. n Example Closing and opening Analog Bus relays The following command connects the Analog Buses to Matrix 2 for a module in 2 wire mode in slot 3 ROUTe CLOSe 3921 3922 3923 3924 ROUTe OPEN 3921 3922 3923 3924 For matrix modules in 2 wire mode only Matrix 2 connects to the the Analog Buses For the 34933A in 1 wire mode only Matrix 3 and Matrix 4 connect to the Analog Buses The Analog Bus relays numbered s921 s922 s923 etc on the matrix modules are ignored if they are included in a range of channels An error will be generated if an Analog Bus relay is specified as the first or last channel in a range of channels For example the following command closes all valid channels between channel 304 and channel 615 slot 2 In addition this command closes Analog Bus relay 911 on the module in slot 1 Bank 1 Note that although the specified range of channels includes the other Analog Bus relays they are ignored and are not closed by this command ROUTe CLOSe 2304 2615 1911 34980A User s Guide 34980A User s Guide Matrix Switch Modules 5 Example Querying channels for open or close state The following command returns a 1 true or 0 false state of channel 204 for a module in slot 3 ROUTe CLOSe 93204 ROUTe CLOSe 903204 Returns a 1 ROUTe OPEN 03204 Returns a 0 Configuring a Module Example Configuring the 34933A module for 2 wire or 1 wire mode The following command configures a matrix module in
145. n slot 1 Bank 1 Note that although the specified range of channels includes the other Analog Bus relays they are ignored and are not closed by this command ROUTe CLOSe 1030 2005 1911 Example Querying channels for open or close state The following command returns a 1 true or 0 false state of channel 036 for a module in slot 3 ROUTe CLOSe 93036 ROUTe CLOSe 903036 Returns a 1 ROUTe OPEN 03036 Returns a 0 Making Measurements Example Making voltage measurements The following command configures channels 9 and 10 in slot 4 for DC voltage measurements triggers the internal DMM to scan channels 9 and 10 and returns the reading The 1 V range is selected with 1 mV resolution MEASure VOLTage DC 1 0 001 04009 4010 Example Making voltage measurements using INITiate and FETCh The following program segment shows how to use the INITiate command with the CONFigure and FETCh commands The ROUTe SCAN command puts channels 3 and 8 of a module in slot 1 into the scan list and redefines the scan list The INITiate command scans the specified channels and then sends the readings to memory The FETCh command transfers the readings from memory to the user CONFigure VOLTage DC 10 0 003 1003 1008 ROUTe SCAN 1003 1008 INITiate FETCh 99 4 100 Low Frequency Multiplexer Switch Modules Example Making current measurements The following command configures channel 43 for a 34921A modules in slot 7 f
146. n using the module in a non scanning mode you can close as many channels as you wish This module is interlock protected which means whenever the D sub connector end of the modules is exposed the Analog Bus relays automatically open and disconnect from the Analog Bus For more information refer to page 96 and page 109 When the power is off all channel relays maintain state and the Analog Bus relays open 107 4 Low Frequency Multiplexer Switch Modules 34922A Simplified Schematic This drawing shows two independent 35 channel 2 wire MUXes NOTE The three digit number assigned to each switch represents the channel number NOTE Bank relays Armature latching Analog Bus relays Armature non latching 108 0 0 0 0 0 com1 0 Analog Buses 011 21 13 04 L 15 05 L4 06 L5 71 gt 911 922 923 1i com2 036 I 06415 4 03715 065 157 L2 1 066 lef 039 L2 1 067 L5 14 040 Li T 068 L5 041 L 069 L 1 042 S L5 070 12 L 34980A User s Guide 34922A D Sub Connectors 16 GND 32H 32L 31H 31L 33H 33L 18H Low Frequency Multiplexer Switch Modules 4 Bank 1 Bank 2
147. ncrements up to a maximum of 4 294 967 295 after which they roll over to 0 Since the value increments by one for each calibration point a complete calibration may increase the value by many counts The calibration count is also incremented with calibrations of DAC channels on the 34951A Isolated DAC Module and 34952A Multifunction Module Front Panel Operation Utility CALIBRATE COUNT Remote Interface Operation cCaribration COUNt 34980A User s Guide Features and Functions 2 Calibration Message 34980A User s Guide The instrument allows you to store one message in calibration memory in the mainframe a digital module or the internal DMM For example you can store such information as the date when the last calibration was performed the date when the next calibration is due the instrument s serial number or even the name and phone number of the person to contact for a new calibration You can record a calibration message only from the remote interface and only when the instrument is unsecured You can read the message mainframe message only from either the front panel or over the remote interface You can read the calibration message whether the instrument is secured or unsecured The calibration message may contain up to 40 characters From the front panel you can view 18 characters of the message at a time Storing a calibration message will overwrite any message previously stored in memory
148. nds used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD 34980A User s Guide 139 5 140 Matrix Switch Modules Opening and Closing Channels Example Closing and opening matrix channels 34931A 34932A and 34933A in two wire mode The following commands close and open channels 311 and 312 through 315 of a 34932A matrix module in 2 wire mode This module is in slot 3 The channel number represents the matrix crosspoint of a row one digit and a column two digits For example channel 311 represents crosspoint at row 3 and column 11 on a 34932A module ROUTe CLOSe 3311 3312 3315 ROUTe OPEN 3311 3312 3315 Example Closing and opening matrix channels 34933A in one wire mode The following commands close and open channels 311 and 312 through 315 of the 34933A module in 1 wire mode The module is in slot 4 The channel number represents the matrix and the matrix crosspoint of a row one digit and a column one digit For example channel 311 represents the crosspoint on matrix 3 at row 1 column 1 on a 34933A module in 1 wire mode ROUTe CLOSe 3311 3312 3315 ROUTe OPEN 3311 3312 3315 Although the previous two examples show the same channel numbers the channels are derived differently as determined by a module s configuration mode See page 139 for channel number derivatio
149. nels in the scan list If no channels have been assigned to the scan list the sample count sets the number of readings per trigger for the internal DMM You can specify a sample count in conjunction with a trigger count and a sweep count The three parameters operate independent of one another and the total number of readings returned will be the product of the three parameters You can store at least 500 000 readings in memory and all readings are automatically time stamped If memory overflows the new readings will overwrite the first oldest readings stored the most recent readings are always preserved The CONFigure and MEASure commands automatically set the sample count to 1 The instrument sets the sample count to 1 after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation Scan Configure gt SAMPLE COUNT Remote Interface Operation SAMPle COUNt 34980A User s Guide Features and Functions 2 Channel Delay You can control the pacing of a scan sweep by inserting a delay between multiplexer channels in the scan list useful for high impedance or high capacitance circuits The delay is inserted between the relay closure and the actual measurement on the channel in addition to any delay that will implicitly occur due to relay settling time The programmed channel delay overrides the default channel delay t
150. nfiguration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format OOOOOOOOOO00 leu NO celo NO A SEE USER S GUIDE FOR SPEED POWER CONSIDERAT I ONS O O O O O O O 0 0 O 9 O O O O O O 0 0 O 9 0 0 O O wo c no c 5 pro c ao chid No c No do c c fno c OoOooooooooooQ Pads for user supplied snubber circuity to alleviate reactive transients The circuits may consist of resistors capacitors varistors or other elements as needed to reduce the switching voltage and current transients inherent in reactive circuits 34980A User s Guide 173 6 6 General Purpose Switch Modules 174 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit amp User s Guide LJ e ee 7 90 RF Multiplexer Switch Modules amp amp e e 34941A and 34942A RF Multiplexer Switch Modules 176 Installing SMA Connectors 177 Isolating Connector Banks 177 34941A and 34942A SCPI Programming Examples 178 34941A and 34942A Simplified Schematic 179 RE Agilent Technologies 7 RF Multiplexer Switch Modules 34941A and 34942A RF Multiplexer Switch Modules 176 The 34941A and 34942A Quad 1x4 RF MUX switch modules provide high density RF signal switching with four independent 1x4 multiplexer banks in each module
151. nfigures totalizer channel 5 on the Multifunction module in slot 3 to be read without resetting its count SENSe TOTalize TYPE READ 893005 199 10 Multifunction Module with DIO D A and Totalizer The following command configures totalizer channel 5 on the Multifunction module in slot 2 to be reset to 0 after it is read RRESet means read and reset CONFigure TOTalize RRES 2005 Example Configuring the totalizer for count This command configures the totalizer to count on the rising edge positive or falling edge negative of the input signal The following command configures the totalizer channel 5 ona Multifunction module in slot 3 to count on the negative edge falling of the input signal TOTalize SLOPe NEGative 3005 Example Clearing count on the totalizer channel This command immediately clears the count on the specified totalizer channels The following commandclears the count on the totalizer channel 5 on a Multifunction module in slot 3 TOTalize CLEAR IMMediate 3005 DAC Output Example Setting output voltage This command sets the output voltage level for the specified DAC channels The following command outputs 2 5 V DC on DAC channels 6 and 7 of a Multifunction module in slot 4 SOURce VOLTage 2 5 4006 4007 Configuring a Multifunction Module Example Querying the system for module identify The following command returns the identify of the module installed in slot 7 SYSTem CT
152. ng command segment enables the trigger output mode on a DAC module installed in slot 4 then enables the external trigger source on DAC channels 1 and 2 The last command issues an external trigger pulse from the module SOURce MODule TRIGger OUTPut ON 4 SOURce FUNCtion TRIGger SOURce EXTernal 4001 4002 SOURce MODule TRIGger EXTernal IMMediate 4 Auto Calibration Example Performing an auto calibration on all DAC channels This command performs an auto cal of all four channels on a DAC module Because the auto cal takes can take up to one minute per DAC channel you may want to increase the time out value of your programming application prior to sending this command The following command performs an auto cal of a DAC module in slot 5 and returns a pass fail indication CALibration MODule 5 The following command performs an auto cal of all 34951A DAC modules a mainframe CALibration MODule ALL Example Effects of using the secure state command on storing calibration constants The following command removes instrument security and the calibration constants are stored in non volatile memory if sent before the CALibration MODule command CALibration SECure STATe OFF security code If the instrument is secured at the time of auto cal the calibration constants are stored in volatile memory and are lost when power is turned off The RST command will not discard the calibration constants The command to secure the i
153. nstrument is CALibration SECure STATe ON security code The default security code is AT34980 34980A User s Guide 191 9 4 Channel Isolated D A Converter with Waveform Memory Module Configuring a DAC Module Example Querying the system for module identify all modules The following command returns the identify of the module installed in slot 7 SYSTem CTYPe 7 Example Resetting the module s to power on state The following command resets a module in slot 4 to its power on state SYST CPON 4 Using this command will erase any downloaded waveforms 192 34980A User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 9 34951A Simplified Schematics The following schematic shows how the module is generally configured Internal to the 34951A Module User Supplied Connections External Clock Out Enable External Trigger Out Enable External Clock In Out lt gt External Trigger In Out 16 Bits Channel 001 Channel 002 Channel 003 _ Channel 004 See the following diagram for the configuration of the DAC channels 34980A User s Guide 193 9 4 Channel Isolated D A Converter with Waveform Memory Module The following diagram shows individual DAC channel configuration All channels are configured the same Internal to the 34951A Module User Supplied Connections HI Voltage Sense External Trigger External Clock In
154. o address the instrument Do not use 255 255 020 011 the the computer will interpret this address differently due to the leading Zeros A value of 0 0 0 0 or 255 255 255 255 indicates that subnetting is not being used The Subnet Mask is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command 34980A User s Guide 79 2 Features and Functions Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP OFF gt AUTO IP OFF gt SUBNET MASK Remote Interface Operation SYSTem COMMunicate LAN SMASk mask Default Gateway A Default Gateway address allows the instrument to communicate with systems that are not on the local subnet Thus this is the Default Gateway where packets are sent which are destined for a device not on the local subnet as determined by the Subnet Mask setting Contact your network administrator to determine if a gateway is being used and for the correct address If you change the Default Gateway you must cycle power on the 34980A to activate the new setting The default for the 34980A is 0 0 0 0 no gateway and subnetting is not being used If DHCP is enabled the specified Default Gateway is not used However if the DHCP server fails to assign a valid IP address the currently configured Default Gateway will be us
155. o select the thermocouple function on the active channel choose the following items DMM or Channel Configure gt TEMPERATURE gt PROBE TYPE gt THERMOCOUPLE Then use the knob to select the thermocouple type from the list THERMOCOUPLE TYPE gt B E J K N R S T If desired you can enable the thermocouple check feature on the active channel opens are reported as OPEN T C T C CHECK gt OFF ON To select the reference junction source for the active channel choose one of the following items REFERENCE gt FIXED EXT INT For an external reference configure an RTD or thermistor as the external reference channel Channel Configure gt TEMPERATURE gt PROBE TYPE gt RTD gt USE AS EXT REF Remote Interface Operation You can use the CONFigure or MEASure command to select the probe type and thermocouple type For example the following command configures channel 3001 for a J type thermocouple measurement CONF TEMP TC J 3001 You can also use the SENSe command to select the probe type and thermocouple type For example the following command configures channel 2003 for a J type thermocouple measurement SENS TEMP TRAN TC TYPE J 2003 The following commands use the SENSe command to set a fixed reference junction temperature of 40 degrees always in C on channel 2003 SENS TEMP TRAN TC RJUN TYPE 92003 SENS TEMP TRAN TC RJUN 40 802003 The following command enables the thermocou
156. o the leading zeros If you are planning to use a static IP address on a Corporate LAN contact your network administrator to obtain a fixed IP address to be used exclusively for your instrument The IP address is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP OFF gt AUTO IP OFF gt IP ADDRESS Remote Interface Operation SYSTem COMMunicate LAN IPADdress address Auto IP The Auto IP standard automatically assigns an IP address to the 34980A when on a network that does not have DHCP servers If you change the Auto IP configuration you must cycle power on the 34980A to activate the new setting Auto IP allocates IP addresses from the link local address range 169 254 xxx xxx From the factory the Auto IP setting is enabled The Auto IP setting is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command 34980A User s Guide Features and Functions 2 Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt DHCP OFF gt AUTO IP Remote Interface Operation SYSTem COMMunicate LAN AUTOip OFF ON Subnet Mask The instrument uses the Subnet Mask to d
157. odule type is installed later however if a module of a different type is installed in that slot the previously defined labels will be discarded All user defined channel labels are stored in non volatile memory and do not change when power has been off after a Factory Reset RST command after an Instrument Preset SYSTem PRESet command or after a stored state is recalled RCL command 34980A User s Guide 25 2 26 Features and Functions Front Panel Operation Channel Configure gt CHANNEL LABEL To define the channel label press the arrow keys to move the cursor to a specific position and then turn the knob to select the desired letter or number To clear the channel label on the selected channel change each character to starting with the rightmost character and then press the left arrow key to move to the next character To clear all channel labels on the selected module navigate to Module Configure gt CLEAR LABELS gt YES Remote Interface Operation The following command assigns a label TEST_PT_1 to channel in slot 1 ROUT CHAN LABEL TEST 1 1003 The following command clears the user defined label previously assigned to channel 3 in slot 1 The channel will now be identified by its factory default label e g MUX CH BANK 1 MATRIX1 ROW3 COLA DIO BYTE 1 etc ROUT CHAN LABEL 1003 The following command clears all user defined channel label
158. of the channels to the internal DMM through 1 and ABus2 for voltage or resistance measurements Using program commands or the mainframe front panel you can control each of the channel switches individually and configure this module for differential 2 wire or 4 wire or single ended 1 wire mode Refer to the simplified schematics on page 114 and page 118 If you are using an optional Agilent 349xxT terminal block to connect your DUT to this module be sure to use the terminal block that corresponds to your module configuration Use the 34923T 001 terminal block for 2 wire or 4 wire configuration Use the 34923T 002 terminal block for 1 wire configuration Refer to drawings on page 117 and page 120 You can confirm the mode in which your module is configured by using the SYSTem CTYPe slot number program command This command returns the identity of the plug in module in the specified slot Whenever you change from 2 or 4 wire mode to 1 wire mode or the reverse you must cycle power on the 34980A for the configuration to take effect Two Wire Mode two independent 20 channel 2 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Buses e one 40 channel 2 wire MUX You must use external wiring or connect through the internal Analog Buses for this configuration In 2 wire mode you can close no more than 20 channels simultaneously due to power dissipat
159. off the units time channel and alarm information The format settings are stored in volatile memory and will be lost when power is turned off or after a Factory Reset RST command 34980A User s Guide Features and Functions 2 Remote Interface Operation Use the following commands to select the reading format FORMat READing ALARm ON FORMat READing CHANnel ON FORMat READing TIME ON FORMat READing TIME TYPE ABSolute RELative FORMat READing UNIT ON Non Sequential Scanning By default the instrument scans the list of channels in ascending order from slot 1 through slot 8 channels are reordered as needed If your application requires non ordered scanning of the channels in the present scan list you can use the non sequential scanning mode This feature is available from the remote interface only The scanning mode applies to the entire mainframe and cannot be selectively used on individual modules When sequential scanning is enabled default the channels in the scan list are placed in ascending order from slot 1 through slot 8 Duplicate channels are not allowed For example 2001 1003 1001 1003 will be interpreted as 1001 1003 2001 When sequential scanning is disabled OFF the channels remain in the order presented in the scan list see exception below Multiple occurrences of the same channel are allowed For example 2001 2001 2001 and 3010 1003 1001 1005 are valid and the channels wi
160. ommand An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation DMM or Channel Configure gt AC FILTER Remote Interface Operation Specify the lowest frequency expected in the input signal on the specified channels The instrument selects the appropriate filter based on the frequency you specify see table above SENSe CURRent AC BANDwidth 3 20 200 lt ch_list gt If you omit the optional ch list parameter the command applies to the internal DMM 34980A User s Guide Features and Functions 2 Frequency Measurement Configuration This section contains information to help you configure the instrument for making frequency measurements Low Frequency Timeout The instrument uses three different timeout ranges for frequency measurements The instrument selects the slow 3 Hz medium 20 Hz or fast 300 Hz filter based on the input frequency that you specify with this command for the selected channels Applies to frequency measurements only Low frequency timeout Input Frequency Timeout 3 Hz to 300 kHz Slow 1 second 20 Hz to 300 kHz Medium 100 ms 200 Hz to 300 kHz Fast 10 ms The coNFigure and MEASure commands automatically select the 20 Hz medium filter The instrument selects the default 20 Hz medium filter after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Rese
161. omplete self test will require an additional 15 seconds to complete per DAC module a memory test is performed The complete self test will abort if any signals are connected to ABusl via the rear panel Analog Bus connector pins 4 5 and 9 see Analog Buses on page 15 Be sure to disconnect any signals from 1 prior to running the self test If the power on or complete self test fails and error is stored in the error queue See the Agilent 34980A Service Guide for more information on returning the instrument to Agilent for service Following the complete self test the instrument issues a Factory Reset RST command Remote Interface Operation The following command returns 0 if the self test is successful or 1 if it fails TST Front Panel Display Control For security reasons or for a slight increase in measurement rates you may want to turn off the front panel display From the remote interface you can also display up to 18 characters on the upper line of the front panel display You can disable the front panel display only by sending a command from the remote interface i e you cannot disable the front panel while in local operation When disabled the entire front panel display goes dark and all display annunciators except ERROR HOT and Safety Interlock are disabled The front panel display is automatically enabled when power is cycled after a Factory Reset RST command
162. open the wiring log file in Microsoft Excel or Adobe Acrobat format SENSE SENSE SENSE SENSE IGGER XT CLOCK LIPS Te OL Of aF Q fe QO uz n amp UJ LIH L BiG 2s h 4 OOoOoOooOooooooOoOo0 N V f 34980A User s Guide 195 9 4 Channel Isolated D A Converter with Waveform Memory Module 196 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide 00 ee 10 Multifunction Module with DIO D A and Totalizer 34952A Multifunction Module 198 34952A SCPI Programming Examples 199 34952A Simplified Schematic 201 34952 D Sub Connector 202 34952T Terminal Block 203 RE Agilent Technologies 197 10 Multifunction Module with DIO D A and Totalizer 34952A Multifunction Module 198 The 34952A Multifunction Module with DIO D A and Totalizer combines four 8 bit ports of digital input output a 100 kHz totalizer and two 12 volt earth referenced analog outputs You can include digital inputs and totalizer input in a scan list You can make connections via standard 50 pin D sub cables or the optional 34952T terminal block Digital Input Output The Digital Input Output DIO consists of four 8 bit ports with TTL compatible inputs and output The open drain outputs
163. or One Wire Mode o Bank1 Bank 2 Bank 1 For orientation the D sub connector end of the module is facing you 0606066600000600600000 000 000 GND 11 12 3 000 30 Interlock 1 Reserved 15 16 35 36 19 20 9 2 23 24 God peneme Asa safety Description Description eature interlock 1 pins 17 and 33 on Bank 1 1 1 COMI H must be shorted to enable 2 2 COMI L 8 the Bank 1 Analog Bus 3 3 Interlock 1 17 relays to close The 4 4 Interlock 1 33 1 wire shorts these pins Hepemed 18 for you This feature protects inadvertent 7 3 Reserved 47 routing of high voltages 8 10 Reserved 48 from the Analog Bus to 9 13 Reserved 49 the D sub connector of 10 14 Reserved 50 the module Bank 2 COM 41 42 43 44 67 68 49 50 79 80 Interlock 2 0000000000068 09 O As a safety eature interlock 2 pins 17 and 33 on Bank 2 must be shorted to enable the Bank 2 Analog Bus relays to close The optional 34923T 002 for 1 wire shorts these pins for you This feature protects inadvertent routing of high voltages from the Analog Buses to the D sub connector of the module 34980A User s Guide Description Description COM2 7 COM2L 8 Interlock 2 17 Interlock 2 33 GND 34 Reserved 18 Reser
164. or dc current measurements triggers the internal DMM to scan the channel and then sends the reading to the output buffer of the 34980A The default settings for range autorange and resolution 1 PLC are used for the measurement MEASure CURRent DC 7043 Configuring a Module Example Configuring a module for 2 wire or 1 wire mode The following command configures a MUX module in slot 4 for 1 wire mode Because you can configure only the 34923A and 34925A MUX modules and the 34933A matrix module for either 2 wire or 1 wire mode an error is generated if you send this command to a slot that does not contain one of those three modules If you are using terminal blocks with these modules be sure to use the corresponding 2 wire or 1 wire terminal block SYSTem MODule WIRE MODE WIRE1 4 When using a command to configure the system the new configuration does not take effect until you cycle power on the 34980A Example Querying the system for module Identify The following command returns the identity of the module installed in slot 7 SYSTem CTYPe 7 For the 34923A and the 34925A MUX modules the query response may include a suffix to indicate a 1 wire configuration For example the response for the 34923A will be either 34923A differential mode or 34923A 1W single ended mode Querying and Clearing Cycle Count and Resetting Modules Example Querying the cycle count for a relay The following command returns the cycle
165. orward or reverse mount the instrument in a cabinet 34980A User s Guide 7 1 Introduction to the 34980A 8 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide 2 Features and Functions SCPI Language Conventions 10 General Measurement Configuration 12 Analog Bus and Internal DMM Considerations 28 Temperature Measurement Configuration 30 Voltage Measurement Configuration 35 Resistance Measurement Configuration 37 Current Measurement Configuration 38 Frequency Measurement Configuration 39 Mx B Scaling 40 Scanning 42 Monitor Mode 60 System Related Operations 62 Calibration Overview 70 Remote Interface Configuration 74 Factory Reset State 84 Instrument Preset State 86 You will find that this chapter makes it easy to look up all the details about a particular feature of the Agilent 34980A Whether you are operating the instrument from the front panel or over the remote interface this chapter will be useful For information specific to the 34980A plug in modules see the later chapters in this manual For complete details on the SCPI Standard Commands for Programmable Instruments commands see the Programmer s Reference Help file included on the Agilent 34980A Product Reference CD ROM The CD ROM is located inside the rear cover of this manual Ee Agilent Technologies 3 2 Features and Functions SCPI Language Conventions Throughout this guide the following conventions are used for SCPI
166. our on each bank that can connect the bank relays to the system Analog Buses and one that connects the current relays to the current input of the DMM Through ABusl and ABus2 you can connect any of the channels to the internal DMM for voltage or resistance measurements Refer to the simplified schematic on page 104 1 consists of three wires that are used for current and voltage measurements You cannot measure current and voltage on ABus1 simultaneously Using program commands or the mainframe front panel you can control each of the channel switches individually and thus configure this module in these modes two independent 20 channel 2 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Buses one 20 channel 4 wire MUX This configuration requires neither using external wiring nor connecting through the internal Analog Buses For 4 wire resistance measurements the instrument automatically pairs channel n on Bank 1 with channel 20 Bank 2 to provide the source and sense connections Four wire controls occur only when doing 4 wire measurement operations through the internal DMM such as MEASure FRESistance or scanning a channel previously configured as 4 wire one 40 channel 2 wire MUX You must use external wiring or connect through the internal Analog Bus relays for this configuration For example closing Analog Bus channels 913 and 923 connects Bank 1
167. panel of the 34980A you can configure the 34933A dual quad 4x8 reed matrix module for differential 2 wire mode or single ended 1 wire mode The 34933A module contains 100 Q in rush resistors that are used to protect the reed relays from reactive loads If you have applications where in rush resistors interfere with measurements connections are provided on the terminal blocks for you to bypass the in rush resistors that are located on the columns See the simplified schematics on page 155 and page 159 However if you choose to bypass the in rush resistors the life of the reed relays that you bypass may be degraded Two Wire Mode To physically configure the module for 2 wire mode use the 34933T 001 terminal block or a compatible standard or custom cable If using a standard or custom cable make sure you connect interlock pins 17 and 33 on the Matrix 2 D sub connector Refer to the pinout drawing and table on page 156 In 2 wire mode the 34933A module contains two matrices each with 32 2 wire crosspoint non latching reed relays organized in a 4 row by 8 column configuration Every row and column are made up of two wires each a high H and a low L Each crosspoint relay has a unique channel number representing the row and column that intersect to create the crosspoint For example channel 308 represents the crosspoint connection between row 3 and column 08 all columns consisting of two digits in this case the digits are
168. ple check feature on the specified channel opens are reported as 9 90000000E 37 SENS TEMP TRAN TC CHECK ON 82003 The following commands select the fixed reference junction source and set the junction temperature to 20 C on the specified channel TEMP TRAN TC RJUN TYPE FIX 92003 TEMP TRAN TC RJUN 20 092003 34980A User s Guide Features and Functions 2 RTD Measurements 34980A User s Guide e The instrument supports RTDs with 0 00385 DIN IEC 751 using ITS 90 software conversions or 0 00391 using IPTS 68 software conversions The default is a 0 00385 The resistance of an RTD is nominal at 0 C and is referred to as R The instrument can measure RTDs with R values from 490 to 2 1 You can measure RTDs using a 2 wire or 4 wire measurement method The 4 wire method provides the most accurate way to measure small resistances Connection lead resistance is automatically removed using the 4 wire method For 4 wire RTD measurements the instrument automatically pairs channel n in Bank 1 with channel n 20 in Bank 2 34921A 34923A or 85 34922A 34924A to provide the source and sense connections For example make the source connections to the HI and LO terminals on channel 2 in Bank 1 and the sense connections to the HI and LO terminals on channel 22 or 37 in Bank 2 Front Panel Operation To select the 2 wire or 4 wire RTD function for the active channel choose th
169. ple count and a sweep count The three parameters operate independent of one another and the total number of readings returned will be the product of the three parameters The CONFigure and MEASure commands automatically set the scan trigger count to 1 The instrument sets the scan trigger count to 1 after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation Scan Configure SCAN TRIGGER COUNTED INFINITE Remote Interface Operation TRIGger COUNt To configure a continuous scan send TRIG COUNT INFINITY 49 2 50 Features and Functions Sweep Count The sweep count sets the number of sweeps per trigger event during a scan a sweep is one pass through the scan list The front panel sample annunciator turns on during each measurement Trigger Sweep 1 Sweep 2 Sweep n Trigger A A N L LINE _ Sweep Count 1 to 500 000 sweeps Sweep count The sweep count is valid only while scanning If no channels have been assigned to the scan list the specified sweep count is ignored no error is generated You can specify a sweep count in conjunction with a trigger count and a sample count The three parameters operate independent of one another and the total number of readings returned will be the product of the three parameters You can store at least 500 000 re
170. power dissipation These channels are split 20 to a bank For example with one Analog Bus relay closed you can close up to a maximum of 39 channel relays If you try to close more than the allowed number of channels you will receive an error message In all modes this module has capability to scan as many as 500 channels second using the internal DMM With the automatic break before make connection operation you are assured that no two signals are connect to each other during a scan This module is interlock protected which means whenever the D sub connector end of the modules is exposed the Analog Bus relays immediately open and disconnect from the Analog Bus For more information refer to page 96 and page 116 or page 119 Because user attached reactive loads and backplane parasitic CAUTION TEC capacitance may result in high in rush currents 100 Q in rush resistors protect the reed relays from damage and performance degradation Therefore you must consider these resistors when you are designing a measurement Refer to the simplified schematics on page 114 and page 118 113 4 Low Frequency Multiplexer Switch Modules Lifetime of relays is severely degraded as current or voltage goes up If higher voltage is being switched limits on source current are recommended When the power is off all channel and Analog Bus relays open 34923A Simplified Schematic for Two or Four Wire Mode This drawing shows two indepen
171. progress press and hold Scan Measure To Build a Scan List From the Remote Interface Use the ROUTe SCAN command to define the list of channels in the scan list To determine what channels are currently in the scan list use the ROUTe SCAN query command To add channels to the present scan list use the ROUTe SCAN ADD command To remove channels from the present scan list use the ROUTe SCAN REMove command To remove all channels from the scan list send ROUT SCAN To initiate a scan use the INITiate or READ command Measurements are stored in memory Each time you initiate a new scan the instrument will clear the previous set of readings from memory To stop a scan in progress use the ABORt command 45 2 46 Features and Functions Scan Trigger Source You can configure the event or action that controls the onset of each sweep through the scan list a sweep is one pass through the scan list You can set the instrument s internal timer to automatically scan at a specific interval You can also program a time delay between channels in the scan list see Channel Delay on page 53 You can manually control a scan by repeatedly pressing the Scan Measure key from the front panel You can start a scan by sending a software command from the remote interface MEASure or INITiate command You can start a scan when an external TTL trigger pulse is received Interval Scanning In thi
172. provides an isothermal block with temperature reference for thermocouple measurements CAUTION When wiring the terminal block via cables to the mainframe make sure the cables are connected to the correct connector The cables provide communication and power to the temperature sensor on the 34921T terminal block If cabling is not correct an error may occur indicating that the 34921A module is not fully operational The 34980A Product Reference CD shipped with the instrument contains a the 34921T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format __ Lr eoooooooooooQ OOOOOOOOO0000 cj Pete 27 28 29 ee RES A 2 alo Eh aa 1285005 J J oOoOooOooooooooOoQ bro rco md UL EE 106 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34922A 70 Channel Armature Multiplexer 34980A User s Guide The high density 34922A 70 Channel Armature Multiplexer 70 Ch Arm MUX is divided into two banks with 35 latching armature switches channels 1 35 and 36 70 in each This module also contains eight armature Analog Bus relays channels 911 914 and 921 924 four on each bank that can connect the bank relays to the system Analog Buses Through ABusl and ABus2 you can connec
173. r additional triggering control and to store DMM readings in memory use the Scan Configure key to set the triggering parameters and then press and hold the Scan Measure key to initiate the DMM measurement These selections are available only for stand alone DMM use when a scan list has not been defined see Stand Alone DMM Mode on page 12 To stop storing readings in memory during long measurements press and hold the Scan Measure key 34980A User s Guide 34980A User s Guide Features and Functions 2 To view the readings in memory use the View key the readings are not erased when you read them Each time you initiate a new DMM only scan the instrument will clear the previous set of readings from memory Remote Interface Operation You can use the MEASure command without specifying a ch list to quickly take a stand alone DMM reading Note however that with the MEASure command most measurement parameters are set to their default values To close the desired channel relays and Analog Bus relays use the ROUTe CLOSe command The Analog Bus relays on the multiplexer and matrix modules are numbered s911 s912 s913 etc To directly control all measurement parameters or triggering use the CONFigure SENSe and TRIGger commands without specifying a ch list parameter To initiate the measurement use the INITiate or READ command without specifying a ch list Each time you initiate a new measurement t
174. ranges 100 V 300 V ranges Input Resistance Auto OFF 10 MQ 10 MQ Input Resistance Auto ON gt 10 GQ 10 MQ The CONFigure and MEASure commands automatically select AUTO OFF fixed at 10 MQ for all ranges The instrument selects 10 MQ fixed input resistance on all dc voltage ranges after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the input resistance setting Front Panel Operation DMM or Channel Configure gt INPUT RESISTANCE Remote Interface Operation You can enable or disable the automatic input resistance mode on the specified channels or the internal DMM With AUTO OFF default the input resistance is fixed at 10 MQ for all ranges With AUTO ON the input resistance is set to gt 10 GQ for the three lowest dc voltage ranges SENSe function IMPedance AUTO OFF ON lt ch_list gt If you omit the optional lt ch_list gt parameter the command applies to the internal DMM 35 2 36 Features and Functions AC Low Frequency Filter The instrument uses three different ac filters which enable you to either optimize low frequency accuracy or achieve faster ac settling times The instrument selects the slow 8 Hz medium 20 Hz or fast 800 Hz filter based on the input frequency that you specify for the selected channels or the internal DMM Applies to ac voltage and ac current measurements only AC low
175. res and Functions The following table shows the relationship between integration time measurement resolution number of digits and number of bits Relationship between integration time resolution digits and bits Integration Time Resolution Digits Bits 0 02 PLC 0 0001 x Range 4 Digits 15 0 2 PLC lt 0 00001 x Range 5 Digits 18 1 PLC 0 000003 x Range 57 Digits 20 2 PLC 0 0000022 x Range 675 Digits 21 10 PLC 0 000001 x Range 6 Digits 24 20 PLC lt 0 0000008 x Range 675 Digits 25 100 PLC lt 0 0000003 x Range 675 Digits 26 200 PLC lt 0 00000022 x Range 675 Digits 26 The instrument selects 1 PLC when the measurement function is changed and after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the integration time setting Front Panel Operation DMM or Channel Configure gt INTEGRATION gt TIME First select the measurement function on the active channel You are automatically guided to the next level of the menu where you can select a specific integration time Remote Interface Operation You can set the integration time using the SENSe commands For example the following command specifies an aperture time of 2 ms for resistance measurements on channel 2001 SENS RES APER 0 002 2001 20 34980A User s Guide Autozero 34980A User s Guide Features and Functions 2 When autozero is enabled default the ins
176. res neither using external wiring nor connecting through the internal Analog Buses For 4 wire resistance measurements the instrument automatically pairs channel n on Bank 1 with channel 85 Bank 2 to provide the source and sense connections Four wire controls occur only when doing 4 wire measurement operations through the internal DMM such as MEASure FRESistance or scanning a channel previously configured as 4 wire In 2 wire mode you can close no more than 20 channels simultaneously due to power dissipation These 20 channels are split 10 to a bank However note that Analog Bus relays count half as much as channel relays in that total For example with one Analog Bus relay closed you can close up to a maximum of 19 channel relays If you try to close more than the allowed number of channels you will receive an error message In all modes this module has capability to scan as many as 500 channels second using the internal DMM With the automatic break before make connection operation you are assured that no two signals are connect to each other during a scan Because user attached reactive loads and backplane parasitic capacitance may result in high in rush currents 100 in rush resistors protect the reed relays from damage and performance degradation Therefore you must consider these resistors when you are designing a measurement Refer to the simplified schematic on page 123 121 4 122 Low Frequency Mul
177. rface Line This line TSIL 31H 31L 27H 27L 37H 37L 33H 33L 29H 29L 39H 39L 35H 35L Interlock 2 is used for temperature G interface only GND 26H 26L 36H 36L 32H 28H 28L 38H 38L 30H 30L Pod yd AE pod 00 0 09 0 9 9 0 9 0 9 xL As a safety eature interlock 2 pins 17 and 33 on Bank 2 Description Description must be shorted to 21H 1 COM H 7 enable the Bank 2 Analog 2L 2 COMZL 8 Bus relays to close The optional 34921T terminal 28 3 Interlock 2 17 block shorts these pins 22L 4 Interlock 2 33 for you This feature 23H 5 GND 34 protects inadvertent 23L 6 TSIL 18 routing of high voltages 24H 9 AMP 43L 47 from the Analog Bus to 74L 10 431 18 the D sub connector of the module 25H 13 AMP 441 49 25L 14 AMP 441 50 34980A User s Guide 105 4 Low Frequency Multiplexer Switch Modules 34921T Terminal Block This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information The 34921T is the only terminal block that
178. rigger Interval 0 Seconds immediate Monitor in Progress Stopped Mx B Scaling Factory Reset State Scaling State Off Gain Factor M 1 Offset Factor B 0 Scale Label VDC 84 34980A User s Guide 34980A User s Guide Module Hardware Features and Functions Factory Reset State Multiplexer Modules Matrix Modules GP Modules RF Modules Microwave Modules System Control Modules All Channels Open 2 Wire 1 Wire Mode No Change All Channels Open 2 Wire 1 Wire Mode No Change All Channels Open Channels b01 and b02 Selected b Bank 34946A Channels 101 and 201 to COM 34947A Channels 101 201 and 301 to COM 34951A DACs 0 Vdc Trace Waveforms Cleared 34952A DIO Ports Input Count 0 DACs 0 Vdc System Related Operations Factory Reset State Display State On Error Queue Errors Not Cleared Stored States No Change System Date No Change System Time No Change Temperature Units C 2 85 2 Features and Functions Instrument Preset State The following tables show the state of the instrument after a SYSTem PRESet command is executed Measurement Configuration Preset State Function No Change Range No Change Resolution No Change Integration Time No Change Input Resistance No Change Channel Labels No Change Channel Delay No Change Reading Format No Change Sample Count No Change Trigger Count No Change Trigger Delay No Change Trigger Source No Change Scanning Op
179. rpose switch modules The slot and channel addressing scheme used in these examples follow the form scec where s is the mainframe slot number 1 through 8 and ccc is the channel number For information on specific configurations refer to the simplified schematic on page 201 For complete information on the SCPI commands used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Digital Input Output Example Configuring a DIO channel The following program segment configures channel 1 on the DAC module in slot 3 as an output and then reads the output value the channel is not reconfigured as an input Then the channel is reconfigured as an input and the value is read again The second command below returns 64 as it is physically reading the output data SOURCe DIGital DATA BYTE 64 93001 SENSe DIGital DATA BIT 0 93001 The second command below returns whatever is being input externally CONFigure DIGital STATe INPut 93001 SENSe DIGital DATA BIT 0 93001 Totalizer Example Reading totalizer channel count The following command reads the count on totalizer channel 5 on the Multifunction module in slot 3 SENSe TOTalize DATA 93005 Example Configuring the totalizer reset mode To configure the totalizer reset mode send either of the following commands The following command co
180. rther information If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34925T 001 terminal block that corresponds to the 2 or 4 wire configuration mode An error will not be generated if you have installed a terminal block that doesn t match the present module configuration The 34980A Product Reference CD shipped with the instrument contains a the 34925T 2 wire mode Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format qu OOOOOOOO00000 ooooooooooooQ COMI HL I 2 5 L H L H LIH L 6e 7 th th OooooooooooooQ 3NV8 L gt B BANK 2 oooooooooooQ 2 21 22 23 24 25 PHL HLTH LTH L H L Hoo 26 27 28 29 th th OOOOOOO000000 ooooooooooooQ 31 32 33 34 35 L 36 37 38 39 40 oooooooooooO0Q 132 2 34980A User s Guide 34925A Simplified Schematic for One Wire Mode This drawing shows two independent 40 channel 1 wire MUXes To Low Frequency Multiplexer Switch Modules change configuration modes use the SYSTem MODule WIRE MODE command NOTE The three digit number assigned to each switch represents
181. s Host Name The Host Name is the host portion of the domain name which is translated into an IP address If you change the Host Name you must cycle power on the 34980A to activate the new setting The default Host Name for the 34980A is A 34980A nnn where nnn is the instrument s serial number representation If Dynamic Domain Name System DNS is available on your network and your instrument uses DHCP the Host Name is registered with the Dynamic DNS service at power on If DHCP is enabled the DHCP server can change the specified Host Name The Host Name is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt REMOTE 1 0 gt LAN gt LAN SETTINGS gt MODIFY gt HOST NAME Remote Interface Operation SYSTem COMMunicate LAN HOSTname lt name gt 34980A User s Guide 81 2 Features and Functions DNS Server The Domain Name Service DNS is an Internet service that translates Domain names into IP addresses Contact your network administrator to determine if DNS is being used and for the correct address If you change the DNS address you must cycle power on the 34980A to activate the new setting e The default DNS Address for the 34980A is 0 0 0 0 Dot notation addresses nnn nnn nnn nnn where nnn is a byte value must be
182. s configuration you control the frequency of scan sweeps by selecting a wait period from the start of one trigger to the start of the next trigger called the trigger to trigger interval If the scan interval is less than the time required to measure all channels in the scan list the instrument will scan continuously as fast as possible no error is generated Trigger 1 Trigger 2 3 Sweep 1 Sweep 2 Sweep n 2 Hayra pos 0 to 359 999 seconds Trigger to trigger interval You can set the scan interval to any value between 0 seconds and 99 59 59 hours 359 999 seconds with 1 ms resolution Once you have initiated the scan the instrument will continue scanning until you stop it or until the trigger count is reached See Trigger Count on page 49 for more information e Mx B scaling and alarm limits are applied to measurements during scan and all data is stored in non volatile memory The CONFigure and MEASure commands automatically set the scan interval to immediate 0 seconds and the scan count to 1 sweep 34980A User s Guide 34980A User s Guide Features and Functions 2 The instrument sets the scan interval to immediate 0 seconds after a Factory Reset RST command An Instrument Preset SYSTem PRESet command or Card Reset SYSTem CPON command does not change the setting Front Panel Operation Scan Configure INTERVAL SCAN
183. s excessive and sets the HOT annunciator on the front panel This over temperature situation generates an SRQ event when the factory set 70 C threshold is reached It is up to the user to determine what if any action should be taken Reactive loads those that include significant inductance or capacitance can cause voltage spikes or current spikes during switching operations The general purpose modules are designed for switching reactive loads The optional 34937T and 34938T terminal blocks have solder pads for adding snubber circuits for the 5 A relays to reduce the reactive transients See the drawings on page 170 and page 173 for the locations of snubber circuit pads and installation information about a snubber circuit A hardware jumper on each of the GP modules allows you to define the power failure states for the modules 5 A latching relays Depending on the position of the jumper the 5 A relays will either open or maintain state when system power failure occurs When shipped from the factory the power fail jumper is in MAINTAIN position all relays maintain their present state when power fails The 34937A has five 5 A relays and the 34938A modules has 20 5 A relays WARNING Before changing the position of the jumper remove external connections from the module Wait five to ten seconds to allow the module s internal capacitors to discharge 34980A User s Guide General Purpose Switch Modules 6 After a f
184. s from the queue If no errors have occurred when you read the error queue the instrument responds with 0 No error The front panel reports errors from all I O sessions as well as the global error queue The interface specific and global error queues are cleared by the CLS Clear Status command and when power is cycled The errors are also cleared when you read the error queue The error queue is not cleared by a Factory Reset RST command or an Instrument Preset SYSTem PRESet command Front Panel Operation View ERROR QUEUE Use the knob to scroll through the errors Press the right arrow key to view the text of the error message All errors are cleared when you exit the menu Remote Interface Operation The following command reads and clears one error from the queue SYSTem ERRor 65 2 Features and Functions Self Test A power on self test occurs automatically when you turn on the instrument This limited test assures you that the instrument and all installed plug in modules are operational This self test does not perform the extensive self test described below A complete self test actually performs a series of internal tests and takes approximately 20 seconds to execute If all tests pass you can have high confidence that the instrument and all installed plug in modules are operational This feature is available from the remote interface only If you have a 34951A Isolated DAC Module installed the c
185. s on the module in slot 1 The factory default labels are assigned to all channels on the module in slot 1 ROUT CHAN LABEL CLEAR MOD 1 The following command clears all user defined labels on all modules installed in the 34980A The factory default labels are assigned to all channels on all installed modules ROUT CHAN LABEL CLEAR MOD ALL 34980A User s Guide Features and Functions 2 2 Wire Versus 1 Wire Mode 34980A User s Guide You can configure the 34923A 34925A and 34933A modules for 2 wire differential or 1 wire single ended measurements If you change the module configuration you must cycle power on the 34980A to activate the new setting e To determine whether the module is in the 2 wire or 1 wire configuration check the module description shown on the front panel when the module is selected or send the SYSTem CTYPe or SYSTem CDEScription command For example the SYSTem CTYPe response for the 34923A will be either 34923A differential mode or 34923A 1W single ended mode If you are using terminal blocks with these modules be sure to use the corresponding 2 wire or 1 wire terminal block The module configuration is stored in non volatile memory on the module and does not change when you remove the module from the mainframe after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Module Configure gt MODE NEXT POWER
186. s show two module connections through rows and columns Wiring Multiple 34931A or 34932A Modules With a 34931A you can combine two matrices to form 8x8 connecting columns or 4x16 connecting rows configurations Using two 34932A matrices on a 34932A module you can create 16x8 connecting columns or 4x32 connecting rows configurations You can connect rows in separate modules using external wiring Or using Bank 2 matrices you can connect through the mainframe Analog Buses For a clear idea of how matrices are arranged and their connections to the Analog Buses see the simplified schematics on page 145 34931A and page 150 84932A You must use external wiring whenever you connect Rows in Matrix 1 of separate modules Rows in Matrix 1 to rows in Matrix 2 on the same or separate modules Columns of two matrices on the same or separate modules You can expand upon these two module configurations and add up to eight modules to design your own large matrices From a programming standpoint each matrix module operates as an independent module regardless of the external connections When linking modules the channel numbering scheme remains the same as for single modules Wiring Multiple 34933A Modules You can connect matrices on the 34933A module in a similar fashion to the 34931A However the presence of in rush resistors on the Analog Buses and columns require additional consideration and you must take care when linking
187. scan e Mx B scaling and alarm limits are applied to measurements during the scan and all data is stored in non volatile memory 34980A User s Guide Features and Functions 2 Front Panel Operation Scan Configure gt INTERVAL gt EXTERNAL To initiate the scan and store all readings in memory press the Scan Measure key Between scan sweeps WAITING FOR TRIG will be displayed on the front panel When a TTL pulse is received the scan starts and readings are stored in memory Note To stop a scan press and hold the Scan Measure key Remote Interface Operation The following program segment configures the instrument for an external scan TRIG SOURCE EXT Select external mode TRIG COUNT 2 Sweep the scan list 2 times INIT Initiate the scan Note To stop a scan press and hold the Scan Measure key Trigger Count 34980A User s Guide You can specify the number of triggers that will be accepted by the internal DMM before returning to the idle state The trigger count applies to both scanning and stand alone DMM measurements with no scan list Select a trigger count between 1 and 500 000 triggers or continuous You can store at least 500 000 readings in memory and all readings are automatically time stamped If memory overflows the new readings will overwrite the first oldest readings stored the most recent readings are always preserved You can specify a trigger count in conjunction with a sam
188. se transient overvoltages result from switching inductive loads or from nearby lightning strikes The lightning caused transient overvoltages that may occasionally occur on mains power outlets may be as high as 2500 Vpeak The 34941A 34942A 34945A 34946A 34947A 34950A 34951A 34952A and 34959A modules are intended for only low voltage applications and should not be connected to circuits that may generate or conduct large transient voltages WARNING Do not connect any of the modules directly to a mains power outlet If it is necessary to measure a mains voltage or any circuit where a large inductive load may be switched you must add signal conditioning elements to reduce the potential transients before they reach the module or the Analog Buses High Energy Sources These modules are designed to handle inputs up to their rated currents or their rated powers whichever is less Under certain fault conditions high energy sources could provide substantially more current or power than a module can handle It is important to provide external current limiting such as fuses if the module inputs are connected to high energy sources CAUTION Install current limiting devices between high energy sources and the module inputs 34980A User s Guide Agilent 34980A Multifunction Switch Measure Unit User s Guide 4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules 96 Measur
189. sly stored calibration constants For SCPI programming examples for the auto cal refer to page 191 188 34980A User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 9 34951A SCPI Programming Examples 34980A User s Guide The programming examples below provide you with SCPI command examples to use for actions specific to the DAC module The slot and channel addressing scheme used in these examples follow the form scec where s is the mainframe slot number 1 through 8 and cec is the three digit channel number Valid channels for this module are 1 4 For information on specific configurations refer to the simplified schematic on page 193 For complete information on the SCPI commands used to program the 34980A refer to the Agilent 34980A Programmer s Reference contained on the 34980A Product Reference CD For example programs also refer to the 34980A Product Reference CD Level Mode Example Outputting a DC voltage level This command sets the output voltage level for the specified DAC channels After setting the desired level send the OUTPut STATe command to close the corresponding output relay and enable outputs from the specified channels The following command outputs 2 5 V DC on DAC channels 1 and 2 for a module in slot 4 SOURce VOLTage 2 5 4001 4002 OUTPut STATe ON 4001 4002 Example Outputting a current level This command sets the output current level on the specified channels on the DAC
190. ss and hold the Scan Measure key 47 2 48 Features and Functions Remote Interface Operation The following program segment configures the instrument for a manual scanning operation TRIG SOURCE BUS Select bus manual mode TRIG COUNT 2 Sweep the scan list 2 times INIT Initiate the scan Then send the TRG trigger command to begin each scan sweep The TRG command will not be accepted unless the internal DMM is in the wait for trigger state Note To stop a scan press and hold the Scan Measure key External Scanning In this configuration the instrument sweeps through the scan list once each time a low going TTL pulse is received on the rear panel Ext Trig Input line pin 6 e a lt I Input Ext Trig Input Pin 6 5V m OV Gnd Pin 9 Hs 1yus Ext Trig Input connector as viewed from rear of instrument You can specify a scan count which sets the number of external pulses the instrument will accept before terminating the scan See Trigger Count on page 49 for more information If the instrument receives an external trigger before it is ready to accept one it will buffer one trigger and then ignore any additional triggers received no error is generated All readings from the scan are stored in non volatile memory Readings accumulate in memory until the scan is terminated until the scan count is reached or until you abort the
191. ss bypass NC 1C7 2 7 ype bypass NC O 90 600000 NC bypass bypass bypass bypass 1C2 2C2 bypass 1R2 2R2 1C8 2C8 NC NC GND O0 00 0 99 9 9 9 OG 102 2c2 108 2C8 203 1 1 2 1 18 283 106 2 6 bypass bypass NC NC bypass bypass 6000600900909 191 2R1 GND No connect pins 11 12 17 18 31 32 34 and 45 46 NOTE Conventions for these Description Pin Description drawings and tables as they TRI 19 167 TC4 bypass 3 relate to pinout information 2R4 means Matrix 2 Row Ins 2 10 2C bypass 4 4 1R3 39 1C8 1 5 bypass 9 165 means Matrix 1 1R4 5 2C8 30 2C5 bypass 10 Column 5 2R1 50 1C1 bypass 21 1C6 bypass 25 4C2 bypass means Matrix 2R2 28 2C1 bypass 22 2C6 bypass 26 4 suai the 2R3 40 1C2 bypass 43 1C7 bypass 15 connection bypasses the 1009 in rush resistor that 2R4 6 2C2 bypass 44 2C7 bypass 16 protects the reed relays 1C1 37 1C3 bypass 19 1C8 bypass 47 2C1 38 2C3 bypass 20 2C8 bypass 48 Matrices 3 and 4 4C4 3C5 405 3C7 3C4 404 bypass bypass 484 305 4C5 bypass bypass NO bass bypaas Interlock O amp 9 Q9 403 3C1 4C1 3C6 466 NC bypass bypass bypass bypass 3C2 402 bypass bypass 2 4R2 3 8 468 NC NC Interlock amp
192. stalled module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information The 34980A Product Reference CD shipped with the instrument contains a the 34922T Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format a2 H a a a360 L L ea 7 8 9 E H 167 120 5 14 3 EF H H L ld B gt 9 4 0370 0580 3599 H H H H L 420 0430 449 H H L 0480 0490 H H L H H H H L L B L L 0476 L L L gira erem 19 cout cone a520 a530 0540 H L ala ga H L L a220 0230 0240 H L H L 0570 0580 0596 H L H L 2270 0280 20299 2 0630 0640 H L H L 0320 0330 0340 h th h 7 6 H LIH 34980A User s Guide 111 4 Low Frequency Multiplexer Switch Modules 34923A 40 80 Channel Reed Multiplexer 112 The 34923A 40 80 Channel Reed Multiplexer 40 80 Ch Reed MUX is divided into two equal banks of non latching reed switches This module also contains eight armature Analog Bus relays channels 911 914 and 921 924 four on each bank that can connect the bank relays to the system Analog Buses You can connect any
193. such as Microsoft Internet Explorer To access and use the 34980A Web Interface 1 Establish a LAN interface connection from your computer to the 34980A 2 Open your computer s Web browser 3 Launch the 34980A Web Interface by entering the IP address of your 34980A or its fully qualified host name in the browser address field 4 Follow the instructions in the 34980A Web Interface s on line Help A Agilent 34980A 0123456789 Microsoft Internet Explorer File Edit View Favorites Tools Help O f X i Qs O B Address http 156 140 176 172 Support Products Agilent Site Another web enabled instrument from Agilent Technologies Welcome to your Web Enabled Multifunction Switch Measure Unit Information about this Web Enabled Instrument Instrument 34980A Multifunction Switch Measure Unit Serial Number 0123456789 Description Agilent 34980A 0123456789 Hostname IP Address 156 140 76 72 VISA TCPIP Connect String TCPIPO 156 140 76 72 INSTR E Advanced information Use the navigation bar on the left to access your Multifunction Switch Measure Unit and related information Agilent Technologies Inc 2002 2004 Agilent 34980A Web Interface If desired you can control access to the 34980A Web Interface using password protection As shipped from the factory no password is set To set a password available from the front panel only navigate to the WE
194. t 15 2 Features and Functions Measurement Functions The following table shows which DMM measurement functions are supported by each of the multiplexer modules Note that similar considerations must be taken into account on the 34931A 34932A and 34933A matrix modules Since the matrix modules cannot be incorporated into a scan list you must use the Stand Alone DMM Mode for these modules 34921A 34922A 34923A 34923A 34924A 34925A 34925A 40 ChArm 70 ChArm 40 ChReed 80 ChReed 70 ChReed 40 ChFET 80 Ch FET MUX MUX MUX MUX MUX MUX MUX Function 2 Wire 1 Wire 2 Wire 1 Wire Voltage AC DC Yes Yes Yes Yes Yes Yes Yes Current AC DC Yes No No No No No No Frequency Period Yes Yes Yes Yes Yes Yes Yes Ohms 2 Wire Yes Yes Yes Yes Yes Yes Yes Ohms 4 Wire Yes Yes Yes No Yes Yes No Thermocouple Yes Yes 3 Yes Yes Yes Yes RTD 2 Wire Yes Yes Yes Yes Yes No No RTD 4 Wire Yes Yes Yes No Yes Yes No Thermistor Yes Yes Yes Yes Yes No No Direct current measurements are allowed on channels 41 through 44 only for all other channels external shunts are required 2 Optional 34921T Terminal Block is required for thermocouple measurements with built in internal reference junction 3 A fixed or external reference junction temperature is required for thermocouple measurement with this module Impact of higher offset voltage specification lt 50
195. t SYSTem CPON command does not change the setting Front Panel Operation DMM or Channel Configure gt AC FILTER Remote Interface Operation Specify the lowest frequency expected in the input signal on the specified channels The instrument selects the appropriate timeout based on the frequency you specify see table above SENSe FREQuency RANGe LOWer 3 20 200 lt ch_list gt If you omit the optional ch list parameter the command applies to the internal DMM 34980A User s Guide 39 2 Features and Functions Mx B Scaling The scaling function allows you to apply a gain and offset to readings during a scan or while making measurements in the stand alone DMM mode In addition to setting the gain and offset values you can also specify a custom measurement label for your scaled readings RPM PSI etc You can apply scaling to any multiplexer channels and for any measurement function Scaling is not allowed with any of the channels on the digital modules 40 Scaling is applied using the following equation Scaled Reading Gain x Measurement Offset You must configure the channel function transducer type etc before applying any scaling values If you change the measurement configuration scaling is turned off on that channel and the gain and offset values are reset M 1 and B 0 Scaling is also turned off when you change the temperature probe type temperature units or disable
196. t 4 SOURce FUNCtion VOLTage OFFSet 5 25 4001 4002 SOURce FUNCtion VOLTage GAIN 1 5 4001 4002 Example Setting cycle count fora waveform The following command segments turn off the trace output mode on DAC channels 1 and 2 in slot 4 set the cycle count to 100 then turn the trace output mode back on SOURce FUNCtion ENABle OFF 4001 4002 SOURce FUNCtion TRACe NCYCles 100 4001 4002 SOURce FUNCtion ENABle ON 4001 4002 Example Deleting a waveform The following command deletes the trace named TEST_WFORM from the module in slot 4 TRACe DELete 4 TEST WFORM External Clock Example Selecting an external clock source and setting a clock divisor first command selects the external clock source on DAC channels 1 and 2 in slot 4 The external clock input is shared between these two channels The second command sets the clock divisor to 100 on the same DAC channels the external clock input signal is divided by 100 SOURCe FUNCtion CLOCk SOURce EXTernal 4001 4002 SOURCe FUNCtion CLOCk EXTernal DIVisor 100 4001 4002 Example Outputting aclock The following commands set the clock output frequency for slot 4 to 5 kHz and enable the output SOURce MODule CLOCK FREQuency 5E 3 4 SOURce MODule CLOCK STATE ON 4 34980A User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 9 External Trigger Example Selecting the external trigger source and issuing trigger source The followi
197. t any of the channels to the internal DMM for voltage or resistance measurements Refer to the simplified schematic on page 108 Using program commands or the mainframe front panel you can control each of the channel switches individually and thus configure this module in these modes two independent 35 channel 2 wire MUXes This configuration requires neither using external wiring nor connecting through the internal Analog Buses one 35 channel 4 wire MUX This configuration requires neither using external wiring nor connecting through the internal Analog Buses For 4 wire resistance measurements the instrument automatically pairs channel n on Bank 1 with channel n 35 Bank 2 to provide the source and sense connections Four wire controls occur only when doing 4 wire measurement operations through the internal DMM such as MEASure FRESistance or scanning a channel previously configured as 4 wire one 70 channel 2 wire MUX You must use external wiring or connect through the internal Analog Bus relays for this configuration For example closing Analog Bus channels 913 and 923 connects Bank 1 and Bank 2 through ABus3 Or externally you can connect COMI to 2 to create this configuration This module has capability to scan as many as 100 channels second using the internal DMM With the automatic break before make connection operation you are assured that no two signals are connect to each other during a scan Whe
198. t be generated if you have installed a terminal block that doesn t match the present module configuration 34980A User s Guide 157 5 Matrix Switch Modules Although columns are numbered the same on the two matrices they are electrically separate gt eeeeeee fel 2002800280020 c MATRIX COLUMN 4X8 gt 1 8 4 X 16 gt Ci Ci 6 OOOOOOOO0O0O000 pooooooooooooQ 158 oooooooOoO0O0009 L____ xav R5 R6 p MATRIX 2 CABUS 34 co C10 C12 H L Cis ci4 Ci5 C16 R7 R8 poooooooooooQo When using the 34933T terminal block for 2 wire mode access is provided to the bypass columns through the columns labeled C9 through C16 Follow this wiring convention shown in the table below for both matrices Terminal marked Connects to Terminal marked Connects to C9H C9L C10H C10L C1iL C12H C12L C1Hbypass C1L bypass C2H bypass C2L bypass C3H bypass C3L bypass C4H bypass C4L bypass C13H C13L C14H C14L C15H C15L C16H C16L C5H bypass C5L bypass C6H bypass C6L bypass C7H bypass CC7L bypass C8H bypass C8L bypass 34980A User s Guide Matrix Switch Modules 5 34933A Simplified Schemati
199. t between 20 mA and 20 mA at 630 nA resolution When outputting current the High Sense and Low Sense terminals are not used and are opened For protection each channel incorporates a fuse that will open at greater than 20 mA If an overload condition exists the fuse will open but no error or SRQ will be generated To reset the fuse remove the overload and wait a few minutes for the fuse to cool Waveform Trace Mode Using the internal waveform point storage you can output provided sine square or ramp and triangle wave shapes or define your own wave shape with up to 512 000 points The module can output points with a settling time of 40 us and a 200 kHz point to point update rate 34980A User s Guide 34980A User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 9 The on board memory provides storage for you to create up to 32 voltage or current waveforms You can apply a different waveform to each channel to output Or you can apply the same waveform to more than one channel For each channel you can designate the gain frequency and or offset for its output The waveforms are stored in volatile memory Therefore whenever power to the 349804 is cycled the volatile memory empties of data it has contained The waveform feature of the 34951A is not intended as a full featured substitute for a function generator but as a means of storing point to point updates Clock In You can configure each DAC ch
200. terlock 1 pins Description 17 and 33 on Bank 1 1 1 must be shorted to enable 2 2 the Bank 1 Analog Bus 3 3 Interlock 1 relays to close The 4 4 Interlock 1 33 optional 34925T 002 for B B Reserved 18 1 wire terminal block 5 GND 34 shorts these pins for you This feature protects 7 3 No Connect 47 inadvertent routing of 8 10 No Connect 48 high voltages from the 9 13 No Connect 49 Analog Bus to the D sub 15 14 No Connect 50 connector of the module Bank 2 GND 51 52 71 72 64 55 56 75 59 N NC NC NC Ga As a safety feature interlock 2 pins Description Description 17 and 33 on Bank 2 1 must be shorted to enable 2 the Bank 2 Analog Bus 3 Interlock relays to close The optional 34925T 002 for 44 4 Interlock 2 33 1 wire terminal block 45 5 Reserved 18 shorts these pins for you 46 6 GND 34 This feature protects 47 9 No Connect 47 inadvertent routing of 18 10 No Connect 48 high voltages from the Analog Buses to the 49 13 No Connect 49 D sub connector of the 50 14 No Connect 50 134 34980A User s Guide Low Frequency Multiplexer Switch Modules 4 34925T 002 Terminal Block for One Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are inter
201. ternal Clock e Internal j Immediate Trigger Data 25 mA resettable 16 Bits thermal fuse Waveform 3 Memory E Calibration constant in non volatile memory 34951A D Sub Connector Pinout GND NC 4L 4H 3H GND GND GND NC 2L 2H GND NC 1 1H GND Q 6 O 5 6 O O 5 6 6 O t 6 6 O O 0 4H 3H EXT 2L 2H 1L 1H GND Sense Sense Sense Sense GND CLK TRIG GND Sense Sense GND GND Sense Sense GND 0 0000990009200 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND CRC O9 SOR OT ORO RCE C BORO 991 9 9 HI Voltage Current LO Voltage Current LO Voltage Sense Description Description 1L 15 3L Sense GND 44 1H 16 3H Sense GND 45 1L Sense 31 4L GND 46 1H Sense 32 4H GND 47 2L 11 4L Sense GND 48 2H 12 4H Sense GND 49 2L Sense 27 External Clock GND 50 2H Sense 28 Trigger 25 No Connect 2 3L GND No Connect 10 3H GND No Connect 14 194 34980A User s Guide 4 Channel Isolated D A Converter with Waveform Memory Module 9 34951T Terminal Block Each terminal block is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number The 34980A Product Reference CD shipped with the instrument contains a the 34951T Wiring Log for you to document your wiring configuration for this module You can
202. the channel number NOTE Bank relays FET non latching Analog Bus relays Armature non latching COM 1 Bank 1 001 011 7 021 udi a 031 r 002 0 012 0 022 o 032 o 003 013 7 023 033 gt _ 004 o o 014 7 024 034 005 015 77 025 7 1 035 7 s 006 o o 016 o o 026 o o 036 o o 007 017 67 027 037 0086 018 028 038 V7 009 019 7 029 039 o 010 s a 020 __ 7 020 040 V7 Analog Buses Overvoltage protection and current limiting circuitry 34980A User s Guide 048 V7 058 o o 068 o o 049 059 069 050 060 JH 070__ Bank 2 078 V7 079 77 080 jJ 133 4 4 Low Frequency Multiplexer Switch Modules 34925A D Sub Connectors for One Wired Mode Bank 1 Bank 2 1 HEY For orientation the D sub connector end of the module is facing you 1 2 3 4 5 6 1H 1L 7 8 27 28 9 10 39 40 Interlock1 0 5 00 0 OOOO CUO 49 09 09 9 9 Reserved 21 22 13 14 eae amp G0 Q9 Q9 Q9 NC NC NC NC 0000 As a safety feature in
203. the internal DMM If you plan to use scaling on a channel which will also use alarms be sure to configure the scaling values first If you attempt to assign the alarm limits first the instrument will turn off alarms and clear the limit values when you enable scaling on that channel If you specify a custom measurement label with scaling it is automatically used when alarms are logged on that channel If you redefine the scan list scaling is turned off on those channels but the gain and offset values are not cleared If you decide to add a channel back to the scan list without changing the function the original gain and offset values are restored and scaling is turned back on This makes it easy to temporarily remove a channel from the scan list without entering the scaling values again You can specify a custom label with up to three characters You can use letters A Z numbers 0 9 an underscore _ or the character which displays a degree symbol on the front panel displayed as a in an output string from the remote interface The first character must be a letter or the character the character is allowed only as the leftmost character in the label The remaining two characters can be letters numbers or an underscore Blank spaces are not allowed The maximum value allowed for the gain and offset is 1 15 34980A User s Guide 34980A User s Guide Features and Functions 2 Th
204. the protective earth terminal will cause a potential shock haz ard that could result in personal injury Do Not Operate in an Explosive Atmosphere Do not operate the instrument in the pres ence of flammable gases or fumes Do Not Remove the Instrument Cover Only qualified service trained personal who are aware of the hazards involved should remove instrument covers Always disconnect the power cable and any exter nal circuits before removing the instrument cover Do Not Modify the Instrument Do not install substitute parts or perform any unauthorized modification to the prod uct Return the product to an Agilent Sales and Service Office for service and repair to ensure that safety features are maintained In Case of Damage Instruments that appear damaged or defec tive should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel Safety Symbols Alternating current Frame or chassis terminal Standby supply Unit is not completely disconnected from ac mains when switch is off Caution risk of electric shock Caution refer to accompanying description If you have questions about your shipment or if you need information about warranty service or technical support contact Agilent Technologies In the United States 800 829 4444 In Europe 31 20 547 2111 In Japan 0120 421 345 Or go to www agilent com find assist for information
205. time stamped If memory overflows a status register bit is set and new readings will overwrite the first oldest readings stored The most recent readings are always preserved You can read the contents of memory at any time even during a scan Reading memory is not cleared when you read it Each time you start a new scan the instrument clears all readings including alarm data stored in reading memory from the previous scan Therefore the contents of memory are always from the most recent scan 34980A User s Guide Features and Functions 2 The Analog Bus relays are automatically opened and closed as required during the scan to connect to the internal DMM for the measurement For example all 2 wire measurements use the 1 MEAS relays for 4 wire measurements the ABus2 SENS relays are used in addition to the ABusl relays When the scan is initiated the instrument will open all channels in banks that contain one or more channels in the scan list n order to guarantee that no signals are connected to the Analog Buses prior to the scan the instrument will open all 1 relays applies to all banks in all slots In banks that contain channels in the scan list the instrument will also open all ABus2 relays regardless of whether 4 wire measurements are involved If no channels configured for 4 wire measurements are included in the scan list the state of the ABus2 relays in the non scanned banks is not alter
206. tiplexer Switch Modules 4 The MUX modules support the DMM measurement functions as shown in the following table 34921A 34922A 34923A 34923A 34924A 34925A 34925A 40 Ch Arm 70 ChArm 40 ChReed 80 ChReed 70 Ch Reed 40 Ch FET 80 Ch FET MUX MUX MUX MUX MUX MUX MUX Function 2 Wire 1 Wire 2 Wire 1 Wire Voltage AC DC Yes Yes Yes Yes Yes Yes Yes Current AC DC Yes No No No No No No Frequency Period Yes Yes Yes Yes Yes Yes Yes Ohms 2 Wire Yes Yes Yes Yes Yes Yes Yes Ohms 4 Wire Yes Yes Yes No Yes Yes No Thermocouple Yes Yes Yes Yes Yes Yes Yes RTD 2 Wire Yes Yes Yes Yes Yes No No RTD 4 Wire Yes Yes Yes No Yes Yes No Thermistor Yes Yes Yes Yes Yes No No Direct current measurements are allowed on channels 41 through 44 only for all other channels external shunts are required 2 Optional 34921T Terminal Block is required for thermocouple measurements with built in internal reference junction 3 A fixed or external reference junction temperature is required for thermocouple measurement with this module 1 Impact of higher offset voltage specification lt 50 uV must be taken into consideration 51 or higher range used unless 1000 series resistors are bypassed on module 810 kQ or higher range used for loads over approximately 300 2 due to series resistance of FET channels 34980A User s Guide 97 4 Low Frequency Multiplexer Swit
207. tiplexer Switch Modules This module is interlock protected which means whenever the D sub connector end of the modules is exposed the Analog Bus relays immediately open and disconnect from the Analog Bus For more information refer to page 96 Lifetime of relays is severely degraded as current or voltage goes up If higher voltage is being switched limits on source current are recommended When the power is off all channel and Analog Bus relays open 34980A User s Guide 34924A Simplified Schematic This drawing shows two independent 35 channel 2 wire MUXes NOTE The three digit number assigned to each switch represents the channel number NOTE Bank relays Reed non latching Analog Bus relays Armature non latching Bank 1 H H H 00115 008 LI os 002 o9 L2 1 oe ZE 71 010 L 1 017 L2 1 004 o tt Analog Buses 34980A User s Guide Low Frequency Multiplexer Switch Modules 123 4 4 Low Frequency Multiplexer Switch Modules 34924A D Connectors Bank 1 o Bank 1 Bank2 o For orientation the D sub connector end of the module is facing you 6H 6L 16H 16H 11L 1H 1L 7H 7L 2H
208. to any value between 0 and 30 The address is set to 9 when the instrument is shipped from the factory Your computer s GPIB interface card has its own address Be sure to avoid using the computer s address for any instrument on the interface bus The GPIB address is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation Utility gt REMOTE 1 0 gt GPIB gt GPIB ADDRESS To set the GPIB address turn the knob or use the number keypad to select the desired address Remote Interface Operation SyYSTem COMMunicate GPIB ADDRess USB Interface For the USB interface no configuration parameters are required to set up the instrument Connect your instrument to a USB port on your computer Note that it may take several seconds for the computer to recognize and establish a connection to the instrument LAN Interface By default DHCP is enabled on the instrument which may enable network communication over the LAN interface You may need to set several configuration parameters as described in this section 34980A User s Guide 75 2 76 Features and Functions 34980A Web Browser Interface The Agilent 34980A provides a Web Interface which is built into the instrument You can use this interface over LAN for remote access and control of the instrument via a Java enabled Web browser
209. to be monitored however the channel must be configured for a measurement in order to be monitored The Monitor mode ignores all trigger settings and takes continuous readings on the selected channel using the IMMediate continuous source The Monitor mode is automatically enabled on all channels that are part of the active scan list If you define the scan list after monitoring has already been enabled any channels that are not part of the active scan list will be ignored during the monitor operation no error is generated Mx B scaling and alarm limits are applied to the selected channel during a Monitor and all alarm data is stored in the alarm queue which will be cleared if power fails You can monitor a digital input channel or totalizer channel even if the channel is not part of the scan list the internal DMM is not required either The count on a totalizer channel is not reset when it is being monitored the Monitor ignores the totalizer reset mode If a channel that is currently being monitored is manually closed or opened the Monitor operation will be disabled on that channel 34980A User s Guide Features and Functions 2 Front Panel Operation DMM or Channel Measure For channel monitoring turn the knob to the desired channel To stop a Monitor press the lighted key again Remote Interface Operation Use the following command to select between the channel Monitor mode default and the internal DMM monitor mo
210. trument internally disconnects the input signal following each measurement and takes a zero reading It then subtracts the zero reading from the preceding reading This prevents offset voltages present on the instrument s input circuitry from affecting measurement accuracy When autozero is disabled the instrument takes one zero reading and subtracts it from all subsequent measurements It takes a new zero reading each time you change the function range or integration time Applies to temperature dc voltage resistance temperature and dc current measurements only The autozero mode is set indirectly when you set the resolution and integration time Autozero is automatically turned off when you select an integration time less than 1 PLC The CONFigure and MEASure commands automatically enable autozero The autozero setting is stored in non volatile memory and does not change when power has been off after a Factory Reset RST command or after an Instrument Preset SYSTem PRESet command Front Panel Operation DMM or Channel Configure gt AUTO ZERO Remote Interface Operation The OFF and ONCE parameters have a similar effect Autozero OFF does not issue a new zero measurement Autozero ONCE issues an immediate zero measurement SENSe function ZERO AUTO OFF ONCE ON lt ch_list gt 21 2 Features and Functions Trigger Delay In some applications you want to allow the input to settle before tak
211. ug In Modules for the 34980A Slot and Channel Addressing Scheme 90 Interconnection Solutions Overview 91 Module Considerations 92 General Considerations 92 Environmental Operating Conditions 92 Electrical Operating Conditions 93 34980A User s Guide vii 4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules 96 Measurement Functions for the MUX Modules 97 SCPI Programming Examples for the MUX Modules 98 34921A 40 Channel Armature Multiplexer with Low Thermal Offset 102 34921A Simplified Schematic 104 34921A D Sub Connectors 105 34921T Terminal Block 106 34922A 70 Channel Armature Multiplexer 107 34922A Simplified Schematic 108 34922A D Sub Connectors 109 34922T Terminal Block 111 34923A 40 80 Channel Reed Multiplexer 112 34923A Simplified Schematic for Two or Four Wire Mode 114 34923A D Sub Connectors for Two or Four Wire Mode 116 34923T 001 Terminal Block for Two or Four Wire Mode 117 34923A Simplified Schematic for One Wire Mode 118 34923A D Sub Connectors for One Wire Mode 119 34923T 002 Terminal Block for One Wire Mode 120 34924A 70 Channel Reed Multiplexer 121 34924A Simplified Schematic 123 34924A D Connectors 124 34924T Terminal Block 126 34925A 40 80 Channel Optically Isolated FET Multiplexer 127 34925A Simplified Schematic for Two or Four Wire Mode 130 34925A D Sub Connectors for Two or Four Wire Mode 131 34925T 001 Terminal Block for Two or Four Wire Mode 132 34925A Simplified
212. ved 47 Reserved 48 Reserved 49 Reserved 50 119 4 4 Low Frequency Multiplexer Switch Modules 34923T 002 Terminal Block for One Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays are open and disconnected from the Analog Buses See page 96 for further information If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34923T 002 terminal block that corresponds to the 1 wire configuration mode An error will not be generated if you have installed a terminal block that doesn t match the present module configuration The 34980A Product Reference CD shipped with the instrument contains a the 34923T 1 wire mode Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format ro eoooooooooooOQ OOOOOOOOOOOO cj coui 41 42 43 44 45 46 47 lt 8 49 50 hi 12113 14 15 16 17 18 19 20 51 s2 53 s
213. x Modules The programming examples below provide you with SCPI command examples to use for actions specific to the matrix switch modules The slot and channel addressing scheme used in these examples follow the general form sece where s is the mainframe slot number 1 through 8 and is the three digit channel number Channel numbers for the matrix modules are derived as follows Two wire mode The channel numbers for the 34931A 34932A and the 34933A 2 wire mode are derived from the crosspoint or intersection of rows and columns columns having two digits See the example below Displayed Channel Means This 5304 A 34931A 34932A 34933A 2 wire mode matrix module is in slot 5 crosspoint is row 3 column 4 It might be easy to remember this channel configuration as srcc slot row column column One wire mode The channel numbers for the 34933A in 1 wire mode are derived from a specific matrix number and the crosspoint or intersection of rows and columns on that matrix See the example below Displayed Channel Means This 2437 A 34933A matrix module in 1 wire mode is in slot 2 matrix of interest is 4 crosspoint is row 3 column 7 It might be easy to remember this channel configuration as smrc slot matrix row column For information on specific configurations refer to the simplified schematics for the matrix modules The schematics are in this chapter For complete information on the SCPI comma
214. ypass 21 C6Hbypass 25 prd 45 46 terminal block shorts these R7 40 CiL bypass 22 C6L bypass 26 pins for you This feature R8H C2H bypass 43 C7H bypass 15 protects inadvertent routing R8L C2L bypass 44 C7L bypass 16 of high voltages from the 37 bypass 19 C8H bypass 47 Analog Bus CIL 38 C3L bypass 20 C8L bypass 48 connector of the module 156 34980A User s Guide Matrix Switch Modules 5 34933T 001 Terminal Block for Two Wire Mode This terminal block with screw type connections is labeled with the model number and the abbreviated module name In addition space is available on the label for you to write the slot number All modules that connect to the internal DMM are interlock protected This means that when an installed module is exposed no terminal block or cable is connected the Analog Bus relays which are on Matrix 2 are open and disconnected from the Analog Buses See page 138 for further information The 34980A Product Reference CD shipped with the instrument contains a the 34933T 2 wire Wiring Log for you to document your wiring configuration for this module You can open the wiring log file in Microsoft Excel or Adobe Acrobat format If you are using an Agilent terminal block to connect your DUT to this module be sure to use the 34933T 001 terminal block that corresponds to the 2 wire configuration mode Note that an error will no

Agilent Technologies Switch/Measure Switch User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents