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Agilent E1328A 4-Channel D/A Converter Module User`s Manual

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1. Agilent E1328A User s Manual Contents 1 Chapter 4 Understanding the Agilent E1328A 31 Using This Chapter ee 31 Commands for D A Converter Operation LL 31 Voltage Outp ts aci abb peli he eae Deli A AG 32 Remote Sense api aghi a ae ok ME eos EE PR 33 Maximum Lead Resistance ooa 33 Operation with Fixed Voltage Sources in Series o 34 Adjustment Under Actual Lead and Load Conditions 34 Current Outputs iu a de de ra ee e AL 36 Querying the D A Converter ee 37 Chapter 5 Agilent E1328A Command Reference 39 Using This Ch pter 22m ea de cate ae lan 39 Command Types sap A SIL ERAS OR SA 39 Common Command Format LL 39 SCPI Command Format LL 39 Command Separator 2 2 22 moon 40 Abbreviated and Short CommaddsS 0 ee 40 Implied Commandds a 40 Parameters iaia dea A AA e 40 Linking Commands i oc wd si ir nee o 41 SCPI Command Reference 41 SNC te kN Kl ae Gale er hl Re 42 CALibrationn CURRent e 42 CALibrationn STATE LL 43 CALibrationn STATe oscars E SRO RA 43 CALibrationn VOLTage e 44 DISPlay aia id as Bale a Sd Seas tado e ia 45 DISPlay MONitor CHANnel 2 2222 CC 45 DISPlay MONitor CHANnel LL 46 DISPlay MONitor STATe 2222 Coon n nn 46 DISPlay MONitor STRing o o 46 SOURCE ita nen na 47 SOURce CURRenta leo oe Pag
2. Outputting voltages and currents from the D A Converter consists of configuring the hardware for the type of output desired then selecting the output type level and mode When necessary an electronic adjustment is performed to maintain calibrated mode output accuracy TE ae TA A I I I Used to enter measurement data during an electronic adjustment I Electronic n channel number 1 to 4 Pa lt measured gt three measured values representing a specific MEASURE channel s minimum default 0 and maximum output current or CURRENT I voltage in the non calibrated mode Entered values are used to OR VOLTAGE I update the stored adjustment constants I I I Select the output mode I n channel number 1 to 4 I xx calibrated mode state I ON or 1 calibrated mode SSS Oooo 3 OFF or 0 non calibrated mode Sets the output to a specific current or voltage level CALibrated CALibrated n channel number 1 to 4 Mode Mode Value can be specified in four ways OFF CALn STATe xx ON xxx desired value in volts or amps MIN minimum value available depends on mode 0 0218 or 0 024 Adc 10 922 or 12 Vdc SOURce CURRenta xxx MIN MAX DEF MAX maximum value available depends on mode SOURce VOLTagen xxx MIN MAX DEF 0 0218 or 0 024 Adc 10 922 or 12 Vdc DEF 0 Adc or Vdc default reset value Non Calibrated Calibrated Current or Current or Voltage Voltage Output Output elses 1984 Figure 4 1 D A
3. and the calibrated mode is selected for all channels Refer to Chapter 4 for more information Chapter 3 Using the Agilent E1328A 19 Electronic Voltage Adjustment The electronic voltage adjustment is used to update the stored voltage constants for each channel and should be performed on initial set up periodically 24 hours or 90 days to maintain desired output accuracy see Appendix A when a 5 C change in temperature from last adjustment performed has occurred when the type of load is changed or anytime accuracy is in doubt The adjustment procedure is performed for each channel as follows 1 2 3 Configure the desired channel s for voltage output see page 17 Connect the load to the desired D A Converter channel Connect a voltmeter external or system to measure voltage at the load Set the D A Converter channel to the non calibrated mode Note The electronic adjustment must be performed in the non calibrated mode step 3 or errors in the adjustment constant will occur Set the channel s output to minimum 12 volts Measure and record to 5 digits the actual output at the load Set the channels output to default 0 volts Measure and record to 51 digits the actual output at the load Set the channel s output to maximum 12 volts Measure and record to 5 digits the actual output at the load Record minimum default and maximum values and send them to the
4. eS 1 E Position H Comments e Test Hook up If possible calibrate to the same load and leads that the D A Converter will be providing the current output to Connect the multimeter leads as close as possible to the load e Multimeter Any 5 4 digit or greater multimeter with DC current with an accuracy of at least 0 02 of reading 1A can be used when performing the adjustment Agilent recommends using the Agilent 3457A e Electronic Voltage Adjustment If a channel is only to be used for current output it is not necessary to perform the voltage adjustment 28 Using the Agilent E1328A Chapter 3 Outputting Current Will output current on channels 1 2 3 and or 4 Range is 21 844 mAdc in calibrated mode and 24 mAdc in non calibrated mode per channel Range can be increased to a maximum 87 376 mAdc in calibrated mode and 96 mA dec in non calibrated mode by connecting all four channels in parallel Example One Channel Figure 3 6 shows how to connect channel 1 output terminals to the load Current Output in The D A Converter must be physically configured to provide current output Calibrated Mode on channel 1 refer to page 17 and then instructed to output 20 00000 mAdc on channel 1 in the calibrated mode Execute CAL1 STAT ON Sets channel 1 to calibrated mode CURR1 0 020000 C
5. n channel number SOURce CURRentn n channel number DISPlay MONitor CHANnel DISPlay MONitor STRing SYSTem ERRor SOURce FUNCn n channel number SOURce VOLTn n channel number Chapter 4 Understanding the Agilent E1328A 37 Notes 38 Understanding the Agilent E1328A Chapter 4 Chapter 5 Agilent E1328A Command Reference Using This Chapter This chapter describes Standard Commands for Programmable Instruments SCPI commands and summarizes IEEE 488 2 Common Commands applicable to the 4 Channel D A Converter e Command Types Page 39 e SCPI Command Reference 0 Page 41 e CALibration Subsystem 0 0 Page 42 e DISPlay Subsystem Page 45 e SOURce Subsystem LL Page 47 e SYSTem Subsystem LL Page 49 e EEE 488 2 Common Command Quick Reference Page 50 e Agilent E1328A Command Quick Reference Page 51 Command Types Common Command Format SCPI Command Format This manual covers two types of commands IEEE 488 2 Common and SCPI Commands The IEEE 488 2 standard defines the common commands that perform functions like reset self test and so on Common commands are four or five characters in length always begin with the asterisk character and may include one or more parameters The command keyword is separated from the first parameter by a space character Two common commands are RST and TST SCPI commands perform funct
6. CURRentn FUNCtionn VOLTagen lt level gt VOLTagen SOURce CURRentn SOURce CURRentr lt level MIN MAX DEF gt configures the D A Converter to output current on a specified channel n at a specified level Parameters Parameter Name Parameter Type Range of Values Default Values n numeric 1 2 3 or 4 1 lt level gt numeric 0 024 to 0 024 MIN 0 MAX DEF Comments Channel Number Select only one channel at a time e Ifa Settings Conflict Error Occurs See Selecting Voltage or Current Output on page 17 e Related Commands CALibrationn STATe e RST Condition SOURce CURRent 0 Example Setting Channel 2 to Current Output at 20 mAdc SOUR CURR2 020 SOURce CURRentn SOURce CURRentn queries a specific channel about the currently selected current level on the channel specified by n Ifthe specified channel is configured for voltage an error will be generated Output format is as follows SDDDDDDDESDDD Where S or D 0 to 9 with floating decimal point E base 100 exponent delimiter Chapter 5 Agilent E1328A Command Reference 47 SOURce FUNCtionn SOURce FUNCtionn queries a specific channel about the configuration of the specified V I jumper in the channel s digital section Does not indicate V I jumper position of the two jumpers in the analog section Returns CURR ifthe jumper is in the I position or VOLT if th
7. Part Number E1328 90005 November 1996 Edition 5 Rev 2 Part Number E1328 90005 May 2006 Edition 5 Rev 3 Part Number E1328 90005 September 2012 Safety Symbols Instruction manual symbol affixed to product Indicates that the user must refer to the man N Alternating current AC ual for specific WARNING or CAUTION information to avoid personal injury or dam S age to the product Direct current DC AN Indicates hazardous voltages Indicates the field wiring terminal that must l be connected to earth ground before operating F the equipment protects against electrical Calls attention to a procedure practice or con shock in case of fault WARNING dition that could cause bodily injury or death Calls attention to a procedure practice or con Ji egaile iame or chassis ground terminal typically CAUTION dition that could possibly cause damage to connects to the equipment s metal frame equipment or permanent loss of data WARNINGS The following general safety precautions must be observed during all phases of operation service and repair of this product Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the product Agilent Technologies assumes no liability for the customer s failure to comply with these requirements Ground the equipment For
8. Returns the current level the specified channel n is currently set to output FUNCtionn Returns the present position of the V I jumper in the specified channel s n digital section VOLTagen lt level gt Sets the specified channel n to output the specific voltage level VOLTagen Returns the voltage level the specified channel n is currently set to output SYSTem ERRor Returns the error number message in the error queue Chapter 5 Agilent E1328A Command Reference 51 Notes 52 Agilent E1328A Command Reference Chapter 5 Appendix A Agilent E1328A Specifications DC Voltage Range 10 92 V cal on 12 V cal off Resolution 333 UV programming interval cal on 16 bit resolution cal off Monotonic to 2 mV at 25 C Accuracy of output volts Conditions cal on within 5 C of cal temperature and same load as at calibration 24 hour 0 05 of output 3 3 mV 90 day 0 15 of output 29 mV 1 year 0 30 of output 110 mV Temperature Coefficient 01 0 667 mV C For loads 500 Q the maximum additional error due to using a load different than that used for calibration is 0 02 of output Output Current Compliance current 24 mA Short circuit current lt 30mA Differential Ripple and Noise lt 2 mVrms in Agilent 75000 mainframe 20 Hz 250 kHz 1 kQ load Common Mode Noise V I to chassis 1 kQ lt 30 mV in Agilent 75000 Mai
9. 0 GPIB library call IOOUTPUTA 70900L send data 3 GPIB library call return 0 78 Agilent E1328A Register Based Programming Appendix B Usi ng an Embedded The following C language program was developed on the Agilent RADI EPC7 Ag ilent RADI EPC7 embedded computer using the Standard Instrument Control Library SICL for Com puter DOS As listed the program sets channel 1 to output 2 00V The program can be used to set the output voltage or current on any DAC channel E1328_VO CPP This program sets D A Converter to output 2 00V on channel 1 The program can also be used to set the output voltage or output current on any channel Note that the channel mode voltage or current must be set using the jumpers on the Agilent E1328A module include lt sicl h gt include lt stdio h gt include lt stdlib h gt include lt conio h gt include lt dos h gt define macros to monitor D A status in the Status Register define READY iwpeek unsigned short base_addr 0x04 amp 0x01 define DONE iwpeek unsigned short base_addr 0x04 amp 0x81 0x81 define SETTLE1 iwpeek unsigned short base_addr 0x04 amp 0x100 define SETTLE2 iwpeek unsigned short base_addr 0x04 amp 0x200 define SETTLE8 iwpeek unsigned short base_addr 0x04 amp 0x400 define SETTLE4 iwpeek unsigned short base_addr 0x04 amp 0x800 define PASS_FAIL iw
10. 1 1 0 1 1 1 1 1 1 1 Status Control Eleven 1 bit fields provide information on equipment and operational status p Reg ister Refer to the register definitions and the following explanation for Status Control Register information Status Control Register Read Write Base 0416 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Sla ae ae E IS ESS SR Read 1 1 1 1 S4 S3 S2 S1 DON ER IE CF READY PAS 1 C P RDY C P RDY Ready bit 0 A one 1 in this field indicates that the D A Converter s data buffer is empty and that data may be written to registers 0816 through 1E16 Note This bit was formerly called RDY Note This bit must be checked before writing to registers 0816 through 1E16 except the RESTART command 60 Agilent E1328A Register Based Programming Appendix B Status Bit Precedence In addition to bit 0 indicating the DAC ready condition bit 0 also determines the validity of bits 6 11 When bit 0 is cleared 0 bits 6 11 may be invalid Therefore when monitoring bits 6 11 that bit AND bit 0 must both be true PAS Passed bit 2 A zero 0 in this field indicates that the D A Converter is either executing or has failed a self test A one 1 indicates that the self test has successfully completed READY Ready bit 3 A zero 0 in this field in combination with a one 1 in the PAS field indicates that the D A Converter is executing an extended self test Note This bit was former
11. 28 42 calibrated mode output example 29 DC specifications 53 non calibrated mode output example 29 30 output 27 30 36 76 81 compliance voltage 36 expanding range 12 querying 47 range expanding 29 30 register based algorithm 71 selecting 17 47 short circuit protection 12 using embedded computers 79 81 D D A Converter commands 19 39 52 operation commands 31 query commands 37 specifications 53 54 Declaration of Conformity 7 Description 11 registers 60 70 Device Type Register 60 reading the 74 75 Differential Ripple and Noise 53 Disabling calibrated mode 43 monitor mode 46 DISPlay Subsystem 45 46 DISPlay MONitor CHANnel 45 DISPlay MONitor CHANnel 46 DISPlay MONitor STATe 46 DISPlay MONitor STRing 46 Documentation History 6 E Electronic adjustment 34 35 and lead resistance 35 procedure for 67 70 current adjustment 26 28 42 voltage adjustment 20 22 44 Embedded Computers using 79 81 Enabling calibrated mode 43 channel monitoring 45 monitor mode 46 non calibrated mode 43 Error queue 49 messages 83 84 ESE 50 ESE 50 ESR 50 Example current output in calibrated mode 29 in non calibrated mode 29 30 voltage output in calibrated mode 23 25 See also Program Examples Expanding output current range 29 30 voltage range 12 24 25 F Field Wiring 18 Fixed Voltage Sources 34 G Gain bytes 67 constants calculating 67 70 General Description
12. 29 30 range expanding 29 30 voltage range 11 query 43 Numeric Command Parameters 40 O Offset bytes 67 constants calculating 67 70 One Channel current output 27 29 voltage output 23 with remote sensing 24 OPC 50 OPC 50 88 Agilent E1328A User s Manual Index O continued Output Current 27 30 36 76 81 compliance voltage 36 expanding output range 12 querying 47 range expanding 29 30 register based algorithm 71 selecting 17 47 short circuit protection 12 specifications 53 using embedded computers 79 81 Output Level changing setting 63 Output Terminals connecting load to 23 25 27 30 Output Voltage 23 25 32 76 81 accuracy calibrated mode 12 compliance current 32 expanding output range 12 querying 48 range calibrated mode 11 expanding 12 24 25 non calibrated mode 11 register based algorithm 71 remote sense mode 33 selecting 17 48 short circuit protection 12 using embedded computers 79 81 P Parameters boolean 40 defined 40 discrete 40 numeric 40 optional 40 register 64 70 SCPI commands 40 plug amp play See VXIplug amp play Online Help Power Requirements 54 Program Examples 72 81 calculating checksum 69 70 gain constants 69 70 offset constants 69 70 determining calibration constants 69 70 electronic current adjustment using external multimeter 27 28 electronic voltage adjustment using system voltmeter 21 22 Program Exampl
13. 488 2 Common Commands with SCPI Commands Use a Commands _ semicolon between the commands For example RST VOLT1 Linking Multiple SCPI Commands Use both a semicolon and a colon between the commands For example VOLT1 CURR2 SCPI Command Reference The following sections describe the Standard Commands for Programmable Instruments SCPI commands for the Agilent E1328A 4 Channel D A Converter Module Commands are listed alphabetically by subsystem and within each subsystem A command guide is printed in the top margin of each page The guide indicates the current subsystem on that page Chapter 5 Agilent E1328A Command Reference 41 CALibration The CALibration subsystem selects the mode of operation calibrated or non calibrated under which a specific channel will operate and is also used to enter updated adjustment constants during electronic adjustment procedures Subsystem Syntax CALibrationn CURRent lt measured MIN MAX DEF gt STATe lt mode gt STATe IVOLTage lt measured MIN MAX DEF gt CALibrationn CURRent CALibrationn CURRent lt measured MIN MAX DEF gt is used to enter a channel s measurement data obtained during an electronic current adjustment These values are used to update the stored adjustment constants The three measured values are MINimum 24mA DEFault 0mA and MAXimum 24mA Note During an electronic adjustment the output current must be measured
14. Based Programming Appendix B Channel Mode vi through V4 bits 0 to 3 A one 1 in any of these bits indicates that the Registers corresponding channels digital section V I jumper is configured to operate in voltage output mode A zero 0 indicates current output mode Config uration of the channel s two analog section V I jumpers are not indicated therefore it is essential that all three V I jumpers match for each channel Channel Mode Register Read Only Base 0616 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Undefined Read 1 1 1 1 1 1 1 1 1 1 1 1 V4 V3 V2 VI Channel Output Eight registers two per channel allow output value to be set Two writes Reg isters are required to set each channel Refer to the register definitions and the following explanation for Channel Output Register information Channel Output MSB Registers Write Only Base 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Ignored MSB value Read Undefined base 1016 for channel 1 base 1416 for channel 2 base 1816 for channel 3 or base 1C16 for channel 4 Channel Output LSB Registers Write Only Base 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Ignored LSB value Read Undefined base 1216 for channel 1 base 1616 for channel 2 base 1A16 for
15. Register read or write to lower byte 0816 Command Register ignored Command Register read or write to lower byte 0616 Channel Mode Register read only FF16 Channel Mode Register 0416 Status Control Register Status Control Register Status Control Register read or write to lower byte 0216 Device Type Register read only Device Type Register Device Type Register 0016 Manufacture ID Register read only ID Register ID Register Appendix B Agilent E1328A Register Based Programming 59 Register Descriptions Manufacturer ID The following pages detail register descriptions for the Agilent E1328A 4 Channel D A Converter Module Reading this register returns FFFF16 This shows Agilent Technologies as Reg ister the manufacturer and that the module is an A16 register based device Manufacturer ID Register Read Only Base 0016 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Undefined Read Manufacturer ID Returns FFFF16 Agilent Technologies A16 only register based Device Type Reading this register returns FF7F16 This shows that the device is an Reg ister Agilent E1328A 4 Channel D A Converter Module Device Type Register Read Only Base 0216 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Undefined Read 1 1 1 1 1 1
16. address of 1FC00016 72 64 16 1FC00016 120016 1FD20016 or 2 080 768 72 64 2 080 768 4608 2 085 376 E1300 E1406 ADDRESS MAP REGISTER OFFSET 16 BIT WORDS FFFFFF ig IE 16 si 30 6 e e 20000016 e e E0000046 gt E e Ne COO Rie N 20000016 126166116 1Es Channel 1 4 Output LSB Registers ji A16 di 19414 18 8 1Qs Channel 1 4 Output MSB Registers A24 X REGISTER arameter Register ADDRESS fe ADDRESS or ir SPACE de SPACE 7 0616 Channel Mode Register A ES 0416 Status Control Register A 1F0000 16 IFCOOO 16 CR 0216 Device Type Register r 2 080 768 N 0016 ID Register 20000016 PA E1328 IFO00016 Register Map Base Address IFC000 g logical address 64 g 0000005 2 080 768 logical address 64 46 Register Address Base Address Register Offset Figure B 2 Address Space in the Mainframe and Command Module Appendix B Agilent E1328A Register Based Programming 57 Register Offset The register offset is the register s location in the block of 64 address bytes that belong to the module For example the modules Status Control Register has an offset of 0416 When you write a command to this register the offset is added to the base address to form the register address D20016 0416 D204161FD20016 0416 1FD20416 53 760 4 53 764 or 2 085 376 4 2 085 380 Table B 1 shows the general programming method for accessing the Agilent E1328A regist
17. an Agilent mainframe are treated as independent instruments each having a unique secondary GPIB address Each instrument is also assigned a dedicated error queue input and output buffers status registers and if applicable dedicated mainframe memory space for readings or data An instrument may be composed of a single plug in module such as a counter or multiple plug in modules for a switchbox or scanning voltmeter instrument 12 Getting Started with the Agilent E1328A Chapter 1 Programming the D A Converter To program the D A Converter using Standard Commands for Programmable Instruments SCPI you must select the controller language interface address and SCPI commands to be used See Installing the Agilent E1300B E1301B Mainframe and Plug In Modules Configuration Guide for interface addressing and controller language information Note This discussion applies to SCPI programming See Appendix B for details on register based programming Selecti ng SCPI A SCPI command consists of a keyword such as the source command Commands SOURce VOLTagen lt level gt n defines the channel to be configured for voltage in this case Most keywords require that you specify the channel 1 2 3 or 4 you want to act on Ifno channel is specified the default is channel 1 Some keywords must be followed by a value to set a parameter to a specific value for example voltage level SOURce VOLTage1 10 00000 10 00000 outputs 10 00000
18. current is corrupted 2802 Channel 2 current Channel 2 stored adjustment checksum error constant current is corrupted 2803 Channel 3 current Channel 3 stored adjustment checksum error constant current is corrupted 2804 Channel 4 current Channel 4 stored adjustment checksum error constant current is corrupted 2805 Channel 1 voltage Channel 1 stored adjustment checksum error constant voltage is corrupted 2806 Channel 2 voltage Channel 2 stored adjustment checksum error constant voltage is corrupted 2807 Channel 3 voltage Channel 3 stored adjustment checksum error constant voltage is corrupted 2808 Channel 4 voltage Channel 4 stored adjustment checksum error constant voltage is corrupted Appendix C Agilent E1328A Error Messages 83 Notes 84 Agilent E1328A Error Messages Appendix C CLS 49 50 ESE 50 ESE 50 ESR 50 IDN 50 OPC 50 OPC 50 RCL 50 RST 19 50 SAV 50 SRE 50 SRE 50 STB 50 TST 50 WAI 50 A A16 Address Space description 55 57 inside command module 57 mainframe 57 outside command module 56 Abbreviated SCPI Commands 40 AC FAIL Line 12 Accessing the Registers 58 Accuracy 53 Address base address 56 57 inside the command module 57 logical 16 55 57 outside the command module 56 registers 55 57 secondary GPIB 12 Adjustment electronic 34 35 67 70 current 26 28 42 voltage 20 22 44 Algorith
19. ee 12 Resetting the Module t piani k ena nn 72 Reading the ID Device Type and Status Registers 2 2 22 220000 74 Outputting a Voltage or Current oaoa 76 Using an Embedded Agilent RADI EPC7 Computer 79 Appendix C Agilent E1328A Error Messages 0 83 Index opus Shee stese e AR ali eee io cain 85 Agilent E1328A User s Manual Contents 3 Notes 4 Contents Agilent E1328A User s Manual Certification Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies product is warranted against defects in materials and workmanship for a period of one 1 year from date of shipment Duration and conditions of warranty for this product may be superseded when the product is integrated into becomes a part of other Agilent products During the warranty period Agilent Technologies will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated
20. module as arguments of the CALibration command New adjustment constants will be automatically calculated and stored from the entered measurement values Repeat steps 2 through 7 for all desired channels 20 Using the Agilent E1328A Chapter 3 Example Electronic Figure 3 1 shows how to connect channel 1 output terminals to the load and Voltage Adjustment system voltmeter Agilent E1326B E1411B The D A Converter must be Using a System physically configured to provide voltage output on channel refer to page 17 Voltmeter and then instructed to perform the adjustment For the example use An GPIB select code of 7 primary address of 09 and secondary address of 09 for the D A Converter An GPIB select code of 7 primary address of 09 and secondary address of 03 for the system voltmeter An HP Series 200 300 Computer with BASIC E1328A DAC N AIC Channel 1 g B V B i a a V I 1 B BE System Voltmeter i y i L y po LO E BR EEE E mm b Je E g oO E a E Set to Ei O e Voltage a lo 3 o ler ee ml H Position I o Mainframe Figure 3 1 Electronic Voltage Adjustment Execute 10 REAL A B C 20 OUTPUT 70909 RST Reset the D A Converter to its default state perform self test 30 OUTPUT 70909 CAL1 STAT OFF Configure channel 1 to the non calibrated mode 40 OUTPUT 70909 VOLT1 MIN Confi
21. using the Agilent E1326B E1411B 51 Digit Multimeter for a system voltmeter or the Agilent 3457 for an external voltmeter recommended for current Electronic Current Adjustment If a channel is only to be used for voltage output it is not necessary to perform the current adjustment 22 Using the Agilent E1328A Chapter 3 Outputting Voltage Will output voltage on channels 1 2 3 and or 4 Range is 10 922 Vdc in calibrated mode and 12 Vdc in non calibrated mode per channel Range can be increased to a maximum of 43 600 Vdc in calibrated mode and 48 Vdc in non calibrated mode by connecting all four channels in series Remote sensing is available to ensure the selected voltage is available at the load Example Voltage Figure 3 2 shows how to connect channel 1 output terminals to the load The Output in Calibrated D A Converter must be physically configured to provide voltage output on Mode channel 1 refer to page 17 and then instructed to output 10 00000 Vdc on channel 1 in the calibrated mode Execute CAL1 STAT ON Sets channel 1 to calibrated mode VOLTI 10 00000 Configures channel 1 for voltage and sets output at terminals to 10 00000 Vdc E1328A DAC H g E g H m CH D g H g Channel i i FM V I 1 a i g O E Lp m si Si
22. 11 Getting Started 11 14 GPIB Secondary Address 12 Agilent E1328A User s Manual Index 87 ID Register 60 reading the 74 75 IDN 50 IEEE 488 2 Common Commands See Common Commands Implied SCPI Commands 13 40 Instrument Definition 12 Isolated Channels 12 Isolation 54 J Jumper VII query configuration 48 setting 17 L LADDR 16 Lead Resistance 34 35 and electronic adjustment 35 maximum 33 Least Significant Byte LSB 59 63 64 Load connecting output terminals to 23 25 27 30 sense terminals to 24 25 Logical Address factory setting 16 55 57 setting 16 LSB Registers 63 64 Mainframe A16 address space 57 ACFAIL line 12 displaying commands 45 46 Manufacturer ID Register See ID Register Map of Registers 59 Maximum errors in error queue 49 lead resistance 33 short circuit current 36 voltage 15 wiring size AWG 18 54 Measurement entering current data 42 voltage data 44 Mode of Operation setting 43 Module block diagram 11 configuring the 15 18 description 11 programming 13 resetting 72 73 specifications 53 54 understanding the 31 38 using the 19 30 V I jumper setting 17 Monitoring channels 45 46 mode 46 Most Significant Byte MSB 59 63 64 MSB Registers 63 64 Multimeter electronic current adjustment 27 28 See also Voltmeter N Non Calibrated Mode electronic current adjustment 26 voltage adjustment 20 enabling 43 output current example
23. 2C16 Add this to 800016 to get the output data 33068 decimal 100 0001 0010 1100 binary or 812C16 2 Enter MSB 1000 0001 binary 8116 in channel 4 MSB Register 1C16 low byte 3 Enter LSB 0010 1100 binary 2C16 in channel 4 LSB Register 1E16 low byte Command and Seven commands control equipment operation using the 0816 register Parameter Reg isters Three of these commands have parameters used to enter data in the 0A16 register Refer to the register definitions and the following explanation for Command and Parameter Register information Command Register Write Base 0816 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Ignored Null Cal on off Calibrate Checksum Zero all Restart Read Undefined Parameter Register Write Base 0A16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Ignored Calibrate Checksum and Restart Read Undefined 64 Agilent E1328A Register Based Programming Appendix B The procedure for sending a command is as follows 1 Poll the Status Control Register until both DON and RDY are asserted 1 2 Write the Command byte to the Command Register 0816 If the command is invalid and DONE is true again ER will be zero 0 The command will not be executed until all required parameters if any have been received Ifthe command is CALIBRATE CHECKSUM or RESTART en
24. 56B IEC 348 UL 1244 Net Weight kg 0 7 54 Agilent E1328A Specifications Appendix A Appendix B Agilent E1328A Register Based Programming Using This Appendix The contents of this appendix are e Addressing the Registers L een Page 55 e Register Definitions Page 59 e Register Descriptions 0 0 ce cece eee eee Page 60 e A Register Based AlgorithM o ooooooomoooo Page 71 e Programming Examples 02 02 c eee eee eee Page 72 Addressing the Registers To access a specific register for either read or write operations the address of the register must be used Register addresses for the plug in modules are found in an address space known as VXI A16 The exact location of A16 within a VXIbus master s memory map depends on the design of the VXIbus master you are using for the Agilent E1300 1301 Mainframe and Agilent E1405 E1406 Command Module the A16 space location starts at 1F000016 The A16 space is further divided so that the modules are addressed only at locations above 1FC00016 within A16 Further every module is allocated 64 register addresses 4016 The address of a module is determined by its logical address set by the address switch on the module times 64 4016 In the case of the D A Converter module the factory default address setting is 72 or 4816 Register addresses for register based devices are located in the upper 25 of VXI A16 address space Every VXI d
25. 7F Status Control Register dependent on current status default is FFFF 74 Agilent E1328A Register Based Programming Appendix B C Version include lt stdio h gt include lt chpib h gt include lt cfunc h gt define LOG_ADDR 72 define BASE_ADDR long 0x1FC000 64 LOG_ADDR main int reg_addr float send_data 3 read char state 2 13 10 send_data 1 16 send_data 2 0 Read ID Register send_data 0 BASE_ADDR 0 IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG PEEK 11 GPIB library call IOEOI 7L 1 IOEOL 7L state 2 GPIB library call IOOUTPUTA 70900L send_data 2 GPIB library call IOENTER 70900L amp read GPIB library call printf nldentification Register 0x int read print ID Register Read Device Type Register send_data 0 BASE_ADDR 2 IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG PEEK 11 GPIB library call IOEOI 7L 1 IOEOL 7L state 2 GPIB library call IOOUTPUTA 70900L send_data 2 GPIB library call IOENTER 70900L amp read GPIB library call printf nDevice Register 0x int read print Device Register Read Status Register send_data 0 BASE_ADDR 4 IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG PEEK 11 GPIB library call
26. Agilent 75000 Series B Agilent E1328A 4 Channel D A Converter Module rr_ _ _ nk User s Manual and SCPI Programming Guide Where to Find it Online and Printed Information System installation hardware software VXIbus Configuration Guide Agilent VIC VXI installation software Module configuration and wiring This Manual SCPI programming This Manual SCPI example programs This Manual SCPI command reference This Manual Register Based Programming This Manual VXIplug amp play Online Help VXIplug amp play Online Help VXI plug amp play Online Help VXI plug amp play Online Help VXI plug amp play programming VXI plug amp play example programs VXI plug amp play function reference Soft Front Panel information VISA language information Agilent VISA User s Guide Agilent VEE programming information Agilent VEE User s Manual Supplied with Agilent Command Modules Embedded Controllers and VXLink ot Agilent Technologies Manual Part Number E1328 90005 Printed in Malaysia E0912 Errata Agilent References in this manual NOTICE This document contains references to Agilent Technologies Agilent s former Test and Measurement business has become Keysight Technologies For more information go to www keysight com About this manual We ve added this manual to the Keysight website in an effort to help you support your product This manua
27. Converter Commands Chapter 4 Understanding the Agilent E1328A 31 Voltage Output The proper sequence of operation for outputting a voltage from the D A Converter is provided below Refer as necessary to Chapters 2 and 3 for additional operating information 1 Determine the number of voltage outputs required and configure the necessary channel jumpers for voltage refer to page 17 2 Connect the output leads to the correct channel V I and terminals refer to page 18 If extending the output range connect the required number of channels in series to obtain the desired output refer to pages 24 25 3 If remote sensing will be used connect leads to the S and terminals refer to pages 24 25 If remote sensing will not be used leave the SENSE terminals disconnected 4 Verify that the compliance current will not be exceeded by calculating the total circuit resistance using Figure 4 2 5 Install the D A Converter in the mainframe and connect the output leads to the load refer to Chapter 3 6 Determine if an electronic voltage adjustment is necessary refer to page 20 7 Enter and execute the proper instructions to output the desired voltage s and the desired mode refer to pages 23 25 Compliance Current lc is the maximum amount of current from the V l terminal to the V I terminal Channel Maximum lc is 24mA for each channel VA Minimum allowable total circuit resistance can S i i R3 be calcu
28. I Standard Commands for Programmable Instruments commands This chapter contains the following sections e D A Converter Description 0 nn Page 11 e Instrument Definition Page 12 e Programming the D A Converter Page 13 D A Converter Description The Agilent E1328A 4 Channel D A Converter provides four independent 16 bit isolated digital to analog channels configurable for either DC voltage or DC current output Figure 1 1 shows a block diagram for one of the four Optical Isolator DAC f Amolif Unity Gain REAST Buffer Chi V I Digital Input Buffer CH1 Sense CH1 Sense Switching Power Supply CH1 V I Fuse do 12V nt lisi La Operating Voltages pa Figure 1 1 D A Converter Block Diagram Agilent E1328A channels All four channels have the same block diagram General Description Each of the four channels can be programmed to output voltage or current in one of the two operating modes Calibrated mode output voltage range is 410 922 Vdc and output current range is 21 84 mAdc Chapter 1 Getting Started with the Agilent E1328A 11 Non calibrated mode output range is typically 12 Vdc and 24 mAdc In the calibrated mode output accuracy is dependent on the date of the last electronic adjustment performed see Appendix A This accuracy is maintained by use of stored adjustment constants in memory Each channel has independen
29. IOEOI 7L 1 IOEOL 7L state 2 GPIB library call IOOUTPUTA 70900L send_data 2 GPIB library call IOENTER 70900L amp read GPIB library call printf nStatus Register 0x int read print Status Register return 0 Appendix B Agilent E1328A Register Based Programming 75 Outputting a Voltage or Current IBASIC Version For specific information on setting or changing the output levels see the sections titled Channel Output Registers on page 63 and A Register Based Algorithm on page 71 Voltage or current mode is jumper selected on the module it is not possible to select either the voltage or current mode by register programming Ensure the proper mode is selected before writing data to the module The following examples set the D A Converter Channel 1 to output 100mVde First determine the output data The required value is a 16 bit number in offset binary FFFF16 represents positive full scale 000016 is negative full scale and 800016 is zero Calibrated output modes are arranged to provide 3 counts per 1 mV resolution For our example to program 100 mV multiply 100 by 3 300 decimal or 12C16 Add this to 800016 to get the output data 812C16 For negative output values subtract from 800016 instead of adding 8116 is the MSB and 2C16 is the LSB Writing to the LSB Register causes the corresponding channel to output the specified voltage or current 10 Base_add
30. RE BUYER S SOLE AND EXCLUSIVE REMEDIES Agilent SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CON TRACT TORT OR ANY OTHER LEGAL THEORY Notice The information contained in this document is subject to change without notice Agilent Technologies MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Agilent shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material This document contains proprietary information which is protected by copyright Allrights arereserved No part ofthis document may be photocopied reproduced or translated to another language without the prior written consent of Agilent Technologies Inc Agilent assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent U S Government Restricted Rights The Software and Documentation have been developed entirely at private expense They are delivered and licensed as commercial computer software as defined in DFARS 252 227 7013 Oct 1988 DFARS 252 211 7015 May 1991 or DFARS 252 227 7014 Jun 1995 as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 Jun 1987 or any equivalent
31. REGISTER OFFSET 16 BIT WORDS FFFF 16 PS SE 16 N FFFF6 36 6 j e c000 REGISTER gt a 16 e ADDRESS SPACE n 1216 1616 1A16 1E 6 Chonnel 1 4 Output LSB Registers A16 1016 1416 1815 1016 Channel 1 4 Output MSB Registers ADDRESS En Org Parameter Register SPACE 0816 Command Registers x 0616 Channel Mode Register C000 16 X 0416 Status Control Register 49 152 Ne 0216 Device Type Register N 0046 ID Register E1328 Register Map 0000 g Base Address C000 logical address 64 g or 49 152 logical address 64 Register Address Base Address Register Offset Figure B 1 Register Address Location within A16 Address Space 56 Agilent E1328A Register Based Programming Appendix B A16 Address Space Inside the Agilent E1405 06 Command Module or Agilent E1300 01 When the A16 address space is inside the Agilent E1405 E1406 Command Module Figure B 2 the module s base address is computed as 1FC00016 LADDR 64 16 or Mainframe 2 080 768 LADDR 64 where 1FC00016 2 080 768 is the starting location of the VXI A16 addresses LADDR is the module s logical address and 64 is the number of address bytes per register based device Again the Agilent E1328 s factory set logical address is 72 If this address is not changed the module will have a base
32. SCPI Commands CALibration 42 44 DISPlay 45 46 SOURce 47 48 SYSTem 49 Switches logical address 16 SYSTem Subsystem 49 SYSTem ERRor 49 System Voltmeter electronic voltage adjustment 21 22 eS ese es 90 Agilent E1328A User s Manual Index T Temperature Coefficient 53 Terminals output connecting load to 23 25 27 30 sense connecting 18 TST 50 Two Channel current output 29 30 non calibrated mode 29 30 voltage output with remote sensing 24 25 U Understanding the Agilent E1328A 31 38 Updating stored current constants 26 voltage constants 20 Using embedded computers 79 81 the Agilent E1328A 19 30 V V I Jumper query configuration 48 setting 17 Voltage adjustment electronic 20 22 44 calibrated mode output example 23 25 range 11 DC specifications 53 maximum allowed 15 non calibrated mode output range 11 output 23 25 32 76 81 accuracy calibrated mode 12 compliance current 32 querying 48 range expanding 12 24 25 register based algorithm 71 remote sense mode 33 selecting 17 48 short circuit protection 12 specified channel 48 using embedded computers 79 81 sources in series 34 Voltmeter electronic voltage adjustment 21 22 See also Multimeter VXIplug amp play Example Programs See VXIplug amp play Online Help VXlIplug amp play Function Reference See VXIplug amp play Online Help VXlIplug amp play Programming See VXIplug amp play Online Help VXlIplu
33. Safety Class 1 equipment equipment having a protective earth terminal an uninterruptible safety earth ground must be provided from the mains power source to the product input wiring terminals or supplied power cable DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes For continued protection against fire replace the line fuse s only with fuse s of the same voltage and current rating and type DO NOT use repaired fuses or short circuited fuse holders Keep away from live circuits Operating personnel must not remove equipment covers or shields Procedures involving the removal of covers or shields are for use by service trained personnel only Under certain conditions dangerous voltages may exist even with the equipment switched off To avoid dangerous electrical shock DO NOT perform procedures involving cover or shield removal unless you are qualified to do so DO NOT operate damaged equipment Whenever it is possible that the safety protection features built into this product have been impaired either through physical damage excessive moisture or any other reason REMOVE POWER and do not use the product until safe operation can be verified by service trained personnel If necessary return the product to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained DO NOT service or adjust alone Do not attempt internal service or adju
34. TE command and parameter to load J K and the checksum into the D A Converter s memory For example using hex example values in step 8 entering the following calculated offset J gain K and checksum for channel 4 68 Agilent E1328A Register Based Programming Appendix B is as follows 00110011b or 3316 register 0816 instructs channel 4 to accept the following data entries The seven parameters register 0A16 are entered as follows OB s is high 8 bits of calculated offset J 7C16 is low 8 bits of calculated offset J 1616 is high 8 bits of calculated gain K F816 is second 8 bits of calculated gain K F216 is third 8 bits of calculated gain K 1A 16 is low 8 bits of calculated gain K 5F16 is calculated check sum 10 Change the selected channel mode to CAL ON 11 If desired check that the constants have been loaded correctly by outputting 800016 and verifying that the channel output is zero 24 hour accuracy for voltage or current see Appendix A Sample Program The following is a sample program written in C to calculate J K and checksum ym yo and yp from steps 4 6 on page 67 are measured and entered Note the program does not prompt for the value of w the default value of 3 65 is used This program demonstrates a weighted least squares approach to determining DAC calibration constants ym uncalibrated negative full scale output value yp positive full scale output yO uncalib
35. Vdc on channel 1 if properly configured for voltage Additionally some keywords must be followed by a value to set a parameter to a specific state for example calibration on off CAL STAT 1 The 1 sets the D A Converter channel 1 mode to ON calibration Note Implied commands are those which appear in square brackets in the command syntax The brackets are not part of the command and are not sent to the instrument SOURce is an implied command and therefore is not required See page 40 for more information about implied commands Chapter 1 Getting Started with the Agilent E1328A 13 Notes 14 Getting Started with the Agilent E1328A Chapter 1 Chapter 2 Configuring the Agilent E1328A Using This Chapter This chapter shows how to connect external wiring to the 4 Channel D A Converter module inputs and how to configure the module for voltage and current output This chapter contains the following sections e Warnings and Cautions een Page 15 e Setting the Logical Address Switch Page 16 e Selecting Voltage or Current Output Page 17 e Connecting Field user WirIdg8 o ooooooooo Page 18 Warnings and Cautions WARNING CAUTION SHOCK HAZARD Only service trained personnel who are aware of the hazards involved should install remove or configure the D A Converter module Before you remove any installed module disconnect AC power from the mainfr
36. _word gt gt 8 Isbyte level_word amp OxFF wait for the D A ready bit and the channel s settle bit 1 and then write msbyte of voltage switch channel case 1 while IREADY channel 1 while SETTLE1 iwpoke unsigned short base_addr 0x10 msbyte wait for D A ready bit 1 and then write Isbyte of voltage while READY iwpoke unsigned short base_addr 0x12 lsbyte break case 2 while READY channel 2 while SETTLE2 iwpoke unsigned short base_addr 0x14 msbyte wait for D A ready bit 1 and then write Isbyte of voltage while READY iwpoke unsigned short base_addr 0x16 Isbyte break case 3 while IREADY channel 3 while SETTLES iwpoke unsigned short base_addr 0x18 msbyte wait for D A ready bit 1 and then write Isbyte of voltage while READY iwpoke unsigned short base_addr 0x1A lsbyte break 80 Agilent E1328A Register Based Programming Appendix B case 4 while IREADY channel 4 while SETTLE4 iwpoke unsigned short base_addr 0x1C msbyte wait for D A ready bit 1 and then write Isbyte of voltage while READY iwpoke unsigned short base_addr Ox1E Isbyte break default exit EXIT_FAILURE break wait for command to complete before setting next output while READY while DONE Perg a leale e ld leale ale sl afe afe al
37. agency regulation or contract clause whichever is applicable You have only those rights provided for such Software and Documentation by the applicable FAR or DFARS clause or the Agilent standard software agreement for the product involved Agilent E1328A 4 Channel D A Converter Module User s Manual Edition 5 Rev 3 Copyright 1996 2006 Agilent Technologies Inc All Rights Reserved Agilent E1328A 4 Channel D A Converter Module User s Manual 5 Printing History The Printing History shown below lists all Editions and Updates of this manual and the printing date s The first printing of the manual is Edition 1 The Edition number increments by 1 whenever the manual is revised Updates which are issued between Editions contain replacement pages to correct the current Edition ofthe manual Updates are numbered sequentially starting with Update 1 When a new Edition is created it contains all the Update information for the previous Edition Each new Edition or Update also includes a revised copy of this printing history page Many product updates or revisions do not require manual changes and conversely manual corrections may be done without accompanying product changes Therefore do not expect a one to one correspondence between product updates and manual updates Edition Das een paio September 1989 Edition Z riesen es a i ea Aenean a May 1992 Edition 3 reabierto Dean February 1994 Edition ds ee ee e RR e April 1995 Edition 5
38. ainframe User s Manual the Agilent E1406A Command Module User s Manual or the ANSI IEEE Standard 488 2 1987 for more information 50 Agilent E1328A Command Reference Chapter 5 Agilent E1328A Command Quick Reference The following table summarizes SCPI Commands for the Agilent E1328A SCPI Commands Quick Reference Command Subsystem Command Parameter Description CALibrationn CURRent lt measured gt Enters three measured values to update the channel s stored current adjustment constant STATe lt mode gt Selects mode to calibrated 1 or non calibrated 0 STATe Returns mode channel is currently operating under IVOLTage lt measured gt Enters three measured values to update the channel s stored voltage adjustment constant DISPlay MONitor CHANnel lt channel gt Enters the desired channel number to be viewed when in monitor mode 1 to 4 or auto MONitor CHANnel lt channel gt Returns the presently selected channel number to be viewed when in monitor mode 1 to 4 or auto or the DEFault MINimum or MAXimum available channel number MONitor STATe lt mode gt Selects monitor mode to on 1 or off 0 MONitor STRing Returns the selected channel number 1 to 4 output configuration voltage or current output level and mode calibrated or non calibrated SOURce CURRentn lt level gt Sets the specified channel n to output the specific current level CURRentn
39. ame and field wiring MAXIMUM VOLTAGE The maximum voltage that may be applied between any two terminals within the same channel is 15 Vdc Do not apply voltage between any pair of terminals if the D A Converter is turned off STATIC ELECTRICITY Static electricity is a major cause of component failure To prevent damage to the electrical components in the D A Converter module observe anti static techniques whenever removing a module from the mainframe or whenever working on a module Chapter 2 Configuring the Agilent E1328A 15 Setting the Logical Address Switch The address switch LADDR factory setting is 72 You may have changed the setting during module installation Valid address values are from 0 to 255 If the D A Converter module is used in a Agilent E1300 E1301 Mainframe refer to Installing the Agilent El300B E1301B Mainframe and Plug In Modules Configuration Guide for addressing information Otherwise use Figure 2 1 to change the setting LOGICAL ADDRESS Sum of decimal values of the switches set to 1 Logical address 72 shown OPEN Switch set to 0 OFF CLOSED Switch set to 1 ON Figure 2 1 Locate and Set the Logical Address Switch 16 Configuring the Agilent E1328A Chapter 2 Selecting Voltage or Current Output Each of the four D A Converter channels is capable of providing either a voltage or current output Voltage or current can be selected for each channel indepen
40. ameter register 64 70 status control register 60 62 74 75 Remote Sensing 24 25 33 maximum lead resistance 33 Reset Conditions 19 Resetting the Module 72 73 Resolution 53 RST 19 50 S Safety Warnings 6 15 SAV 50 SCPI Commands abbreviated 40 CALibration subsystem 42 44 command separator 40 DISPlay subsystem 45 46 format 39 40 implied 13 40 linking 41 operation commands 31 parameters 40 quick reference 51 reference 39 52 selecting 13 short 40 SOURce subsystem 47 48 SYSTem subsystem 49 used in chapter 3 19 to query 37 Secondary GPIB Address 12 Selecting current output 47 monitor channel values 45 mode 46 SCPI commands 13 voltage output 17 48 Sense Terminals connecting 18 load to 24 25 Series Voltage Sources 34 Setting logical address switch 16 mode of operation 43 output level 63 V I jumper 17 Settling Time 54 Shock Hazard 15 Short Circuit Protection 12 Short SCPI Commands 40 Soft Front Panel See VXIplug amp play Online Help SOURce Subsystem 47 48 SOURce CURRentn 19 47 SOURce CURRentn 47 SOURce FUNCtionn 48 SOURce VOL Tagen 19 48 SOURce VOL Tagen 48 Specifications 53 54 Specifying Channels 13 Square Brackets 13 SRE 50 SRE 50 Static Electricity 15 Status Bit Precedence 61 62 Status Control Register 60 62 reading the 74 75 STB 50 Stored current constants updating 26 voltage constants updating 20 Subsystems
41. ata 0 base_address 4 Status Register address send_data 1 16 hex base send_data 2 0 no value because reading the register IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG PEEK 11 GPIB library call IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTA 70900L send_data 2 7 GPIB library call while bit_number 0x0101 wait until bits O and 8 channel 1 are ready IOENTER 70900L amp read bit_number engined GPIB library call main Poll Status Register to ensure channel ready poll_status_register BASE_ADDR Send Channel MSB send_data 0 BASE_ADDR msb_addr set MSB address send_data 2 0x81 MSB data Appendix B Agilent E1328A Register Based Programming 77 IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG POKE 10 GPIB library call IOEOI 7L 1 IOEOL 7L state 0 GPIB library call IOOUTPUTA 70900L send_data 3 GPIB library call Poll Status Register to ensure channel ready poll_status_register BASE_ADDR Send Channel LSB send_data 0 BASE_ADDR Isb_addr set LSB address send_data 2 0x2C LSB data IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG POKE 10 GPIB library call IOEOI 7L 1 IOEOL 7L state
42. by Agilent Technologies Buyer shall prepay shipping charges to Agilent and Agilent shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent from another country Agilent warrants that its software and firmware designated by Agilent for use with a product will execute its programming instructions when properly installed on that product Agilent does not warrant that the operation of the product or software or firmware will be uninterrupted or error free Limitation Of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied products or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance The design and implementation of any circuit on this product is the sole responsibility of the Buyer Agilent does not warrant the Buyer s circuitry or malfunctions of Agilent products that result from the Buyer s circuitry In addition Agilent does not warrant any damage that occurs as a result ofthe Buyer s circuit or any defects that result from Buyer supplied products NO OTHER WARRANTY IS EXPRESSED OR IMPLIED Agilent SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Exclusive Remedies THE REMEDIES PROVIDED HEREIN A
43. channel 3 or base 1E16 for channel 4 The procedure for setting or changing an output level is as follows 1 Determine the output data The required value is a 16 bit number in offset binary FFFF 16 represents positive full scale 000016 is negative full scale and 800016 is zero Calibrated output modes provide 3 counts per 1 mV or 3 counts per 2uA 1 5 counts per 1UA resolution For example to program 100mV multiply 100 by 3 300 decimal or 12C16 Add this to 800016 to get the output data 812C16 For negative output values subtract from 800016 instead of adding Or to program 2500uA multiply 2500 by 1 5 and add 800016 2 Poll the Status Control Register until C P RDY is one 1 3 Verify that the selected channel s Status Control Register settle bit is one 1 Appendix B Agilent E1328A Register Based Programming 63 4 Write the selected channel s Most Significant Byte MSB in bits 0 7 register 1016 1416 1816 or 1C16 5 Poll the Status Control Register until C P RDY is one 1 6 Write the selected channel s Least Significant Byte LSB in bits 0 7 register 1216 1616 1A16 or 1E16 Writing to an LSB Register will cause the corresponding channel to be updated Note The output is not changed until the LSB is received If the MSB has not changed from the previous entry you need only send the LSB For example to program 100 mVdc on channel 4 1 Multiply 100 by 3 300 decimal or 1
44. d Commands syntax Note that the brackets are not part of the command and are not sent to the instrument Suppose you send a second level command but do not send the preceding implied command In this case the instrument assumes you intend to use the implied command and it responds as if you had sent it Examine an excerpt from the SOURce subsystem shown below SOURce VOLTagen The root command SOURce is an implied command To query the instrument about a voltage level set on channel 1 send either of the following commands SOUR VOLT1 or VOLT1 Parameters Parameters are enclosed in greater than less than symbols lt gt in the command syntax When more than one parameter is allowed the parameters are separated by a vertical line Parameter Types The following table contains explanations and examples of parameter types you might see later in this chapter Parameters must always be separated from the keywords by a space Parameter Type Explanations and Examples Numeric Accepts all commonly used decimal representations of numbers including optional signs decimal points and scientific notation 123 or 123E2 123 or 1 23E2 123 1 23E 2 or 1 23000E 01 Special cases include MINimum MAXimum and DEFault Boolean Represents a single binary condition that is either true or false 1 or ON 0 or OFF 40 Agilent E1328A Command Reference Chapter 5 Linking Linking IEEE
45. dently Figure 2 2 shows the jumper location for each channel and highlights the jumpers for Channel 1 Figure 2 2 also shows the correct position for the desired output Note that each channel contains three jumpers and that all jumpers for a channel must be changed to the desired output E1328A DAC AICI g H E E D D D D H E 3 Note 5 All three jumpers must be configured E to the same output for any channel D ocre En ooo TITTI TTT En E bd E 1 i i x Figure 2 2 Voltage Current Output Selection OIDO d a Set to Voltage Set to Current CAUTION Moving the V I jumpers with power applied to the D A Converter could cause improper operation or damage Chapter 2 Configuring the Agilent E1328A 17 Connecting Field Wiring Figure 2 3 shows the input terminals for the D A Converter output and sense terminals Use the following guidelines for wire connections Wiring Guidelines e Itis recommended that each channel wire be identified color coded or marked as the connection is not visible when the D A Converter module is installed e Be sure that wires make good connections on the screw terminals e Maximum wire size is 16 AWG Wire ends should be stripped 6 mm 0 234 inch and t
46. e BASE_ADDR 3 delay 200 wait 200 mS delay is unique to Borland Turbo C send_value BASE_ADDR 2 delay 100 wait 100 mS send_value BASE_ADDR 0 return 0 Appendix B Agilent E1328A Register Based Programming 73 Reading the ID The following examples read the ID Device Type and Status Control Device Type and Registers Status Registers IBASIC Version 10 Brass it 20 pokak READREG RK 30 SECO OO O OOO O ICG GIGI IG IRI ICI ICRI IR I a 40 OPTION BASE 0 is default 50 Setup arrays to store register names and addresses 60 DIM Reg_name 0 2 32 Reg_addr 0 2 70 80 Read register names and addresses into the arrays 90 READ Reg_name 100 READ Reg_addr 110 120 Set base Address variable 130 Base_addr DVAL 1FD200 16 140 150 Map the A16 address space 160 170 CONTROL 16 25 2 used only with V360 Controller 180 Call the subprogram Read_regs 190 Read_regs Base_addr Reg_name Reg_addr 200 210 DATA Identification Register Device Register Status Register 220 DATA 00 02 04 230 END 240 This subprogram reads each register and prints its contents 250 SUB Read regs Base_addr Reg_name Reg_addr 260 FOR Number 0 to 2 270 Register READIO 9826 Base_addr Reg_addr number 280 PRINT Reg_name number IVAL Register 16 290 NEXT Number 300 SUBEND This program returns ID Register FFFF Device Type Register FF
47. e ae ed la le el void reset_dtoa char base_addr This function resets the D A converter by disabling the Status Control Register SYSFAIL bit bit 1 by writing a 1 to the soft reset bit bit 0 and then by writing a 0 to bit O After the reset the SYSFAIL bit is re enabled iwpoke unsigned short base_addr 0x04 2 disable SYSFAIL iwpoke unsigned short base_addr 0x04 3 delay 200 Borland C function iwpoke unsigned short base_addr 0x04 2 turn off reset while IPASS_FAIL wait for the reset to complete iwpoke unsigned short base_addr 0x04 0 enable SYSFAIL Appendix B Agilent E1328A Register Based Programming 81 Notes 82 Agilent E1328A Register Based Programming Appendix B Appendix C Agilent E1328A Error Messages Table C 1 lists the error messages associated with the 4 Channel D A Converter module programmed by SCPI See the appropriate mainframe manual for a complete list of error messages Table C 1 4 Channel D A Converter Error Messages No Title Potential Cause s 350 Too many errors The error queue is full as more than 30 errors have occurred 330 Self test Failure Module malfunction 240 Hardware Failure Module malfunction 221 Jumper Settings Channel s V I jumper in incorrect position 2801 Channel 1 current Channel 1 stored adjustment checksum error constant
48. e jumper is in the V position Parameters Parameter Name Parameter Type Range of Values Default Values n numeric 1 2 3 or 4 1 Comments Channel Number Select only one channel at a time SOURce VOLTagen SOURce VOLTagen lt level MIN MAX DEF gt configures the D A Converter to output voltage on a specified channel at a specified level Parameters Parameter Name Parameter Type Range of Values Default Values n numeric 1 2 3 or 4 1 lt level gt numeric 12 to 12 MIN MAX DEF 0 Comments Channel Number Select only one channel at a time e Ifa Settings Conflict Error Occurs See Selecting Voltage or Current Output on page 17 Related Commands CALibrationn STATe CALibrationn VOLTage e RST Condition SOURce VOLTage 0 Example Setting Channel 1 to Voltage Output at 10 000000 Volts VOLTI 10 000000 SOURce VOLTagen SOURce VOLTagen queries a specific channel about the currently selected voltage level on the channel specified by n Ifthe specified channel is configured for current an error will be generated Output format is as follows SDDDDDDDESDDD Where S or D 0 to 9 with floating decimal point E base 100 exponent delimiter 48 Agilent E1328A Command Reference Chapter 5 SYSTem The SYSTem subsystem returns the error numbers and error messages in the error queue and retu
49. ect on this bit DON Done bit 7 A one 1 this field indicates that the previous command has been completed Writing to the Command Register 0816 when this bit is zero 0 may abort the command in progress Channel output operations have no effect on this bit S1 through S4 Settle Flags bits 8 to 11 A one 1 in one of these fields indicates that the corresponding channel output is stable A zero 0 indicates that the channel output is or will be changing Writing to a channel when its settle flag is low 0 could corrupt the output data SR Soft Reset bit 0 Writing a one 1 causes the D A Converter to enter a reset state Channel output data will be lost and all pending commands will be terminated Registers 0816 through 1E16 cannot be accessed when Soft Reset is set The D A Converter will be held in the reset condition until a zero 0 is written to the SR bit at which time the power on self test and start up sequence will be executed It is recommended that the SR bit remain high for gt 200 msec CAUTION Only perform a soft reset ifthe RESTART command fails see Command and Parameter Registers later in this appendix This is because when the D A Converter is soft reset power is removed from the output channels and the output state during power down is indeterminate SFI SysFail Inhibit bit 1 Writing a one 1 inhibits the assertion of the SYSFAIL line on the backplane 62 Agilent E1328A Register
50. ed DEF MIN MAX queries available channel information DEFault and MINimum always returns 1 and MAXimum always returns 4 DISPlay MONitor STATe DISPlay MONitor STATe lt mode gt turns the monitor mode on or off Parameters Parameter Name Parameter Type Range of Values Default Values lt mode gt boolean 0 1 ON OFF 0 OFF Comments The STATe parameter is optional Therefore either of the following command statements is valid DISP MON STAT ON or DISP MON ON e Monitoring Module Channels DISPlay MONitor STATe ON or DISPlay MONitor STATe 1 turns the monitor mode on to show the selected channel state DISPlay MONitor STATe OFF or DISPlay MONitor STATe 0 turns the monitor mode off e Selecting the Channel to be Monitored Use the DISPlay MONitor CHANnel command to select the channel e RST Condition DISPlay MONitor STATe OFF Example Enabling the Monitor Mode This command selects monitor mode to on DISP MON STAT 1 DISPlay MONitor STRing DISPlay MONitor STRing queries the channel for output information Channel is selected by the DISPlay MONitor CHANnel command and enabled by the DISPlay MONitor STATe command Display string is two 25 character fields separated by a comma 46 Agilent E1328A Command Reference Chapter 5 SOURce The SOURce subsystem selects a channels output type voltage or current and level Subsystem Syntax SOURce CURRentn lt level gt
51. ella 47 SOURce JCURRentn LL LL 47 SOURce FUNCtionn o o 48 SOURce VOLTagen ie Papa 2 2 ha A e ai 48 SOURce JVOL Tagen 2 48 SYSTEM Corno ein rr Ha ee aa a di de er 49 SYSTEM ERRO tt ee coto e IA Ri ea ioe Sad 49 IEEE 488 2 Common Command Quick Reference 50 Agilent E1328A Command Quick Reference 2 2 2 2 22 nn 51 2 Contents Agilent E1328A User s Manual Appendix A Agilent E1328A Specifications o oo 53 Appendix B Agilent E1328A Register Based Programming 55 Using This Appendix 2 usa A rn La 55 Addressing the Registers LL 55 Phe Base Address 3 64525 ha east aa da Gor dyeing Ome bea 56 A16 Address Space Outside the Command Module on the VXIbus 56 A16 Address Space Inside the Agilent E1405 06 Command Module or Agilent E1300 01 Mainframe LL 57 Register Offset iii 22 202 8 Lo ende an be wen ee di 58 Register Definitions ii ss Gee Aha h he Baer a ee 59 Register Descriptions 2 0 2 6 5 ek 80 wenn an Sr nenn 60 Manufacturer ID Register aoaaa 60 Device Type Register 2 2 2 2 oo oo onen 60 St tus Control Register ea A ne ee pe 60 Status Bit Precedente snai alg ghd Ga as pe rn 61 Channel Mode Registers 2222 2 2 aa 63 Channel Output Registers 2 22 2 oo oo onen 63 Command and Parameter Registers o oo aaa 64 A Register Based Algorithm LL 71 Programming Examples LL 72 System Configuration ooa ee
52. ers using different computers Table B 1 Accessing the Agilent E1328A Registers Computer Programming Method Base Address E1300 01 IBASIC Absolute Addressing select code 8 READIO 9826 Base_addr offset WRITEIO 9826 Base_addr offset data positive select code byte read or write negative select code word read or write READIO 8 Base_addr reg number WRITEIO 8 Base_addr reg number data Base_addr 1FC00016 LADDR 64 16 or 2 080 768 LADDR 64 offset register offset Figure B 2 Base_addr LADDR 256 reg number register offset Figure B 2 2 External Computer over GPIB to Agilent E1300 E1301 Mainframe or Agilent E1405 E1406 Command Module VXI READ logical_address offset VXI WRITE logical_address offset data DIAG PEEK Base_addr offset width DIAG POKE Base_addr offset width data Module logical address setting LADDR offset register offset Figure B 2 Base_addr 1FC00016 LADDR 64 16 or 2 080 768 LADDR 64 offset register offset Figure B 2 V 382 Embedded Computer C Size system READIO 16 Base_addr offset WRITEIO 16 Base_addr offset data positive select code byte read or write negative select code word read or write Base_addr C00016 LADDR 64 16 or 49 152 LADDR 64 offset register offset Figure B 1 Agilent RADI EPC7 Embedded Computer with SICL iwpeek
53. es continued expanding current output range 29 30 voltage output range 24 25 outputting voltage or current 76 81 reading registers 74 75 register based 72 81 resetting the module 72 73 using embedded computers 79 81 See also Example Programming register based 55 82 the D A Converter 13 Q Query channel output 46 commands 37 current output 47 error queue 49 mode of operation 43 monitored channel 46 V I jumper configuration 48 voltage output 48 Querying the D A Converter 37 Quick Reference common commands 50 SCPI commands 51 R Range 53 RCL 50 Read Registers channel mode register 63 device type register 60 74 75 ID register 60 74 75 status control register 60 62 74 75 Register Based Programming 55 82 accessing registers 58 addressing the registers 55 57 algorithm 71 base address 56 57 outputting voltage or current 76 81 programming examples 72 81 reading registers 74 75 register definitions 59 descriptions 60 70 offset 58 resetting the module 72 73 Agilent E1328A User s Manual Index 89 R continued Register Based Programming continued using embedded computers 79 81 Registers accessing 58 addressing 55 57 channel mode register 63 output registers 63 64 command register 64 70 definitions 59 descriptions 60 70 device type register 60 74 75 ID register 60 74 75 LSB registers 63 64 map 59 MSB registers 63 64 offset 58 par
54. evice up to 256 is allocated a 64 byte block of addresses Figure B 1 shows the register address location within A16 Figure B 2 shows the location of A16 address space in the Agilent E1405 E1406 Command Module 1 The 16 at the end of the address indicates a hexadecimal base number Appendix B Agilent E1328A Register Based Programming 55 The Base Address A16 Address Space Outside the Command Module on the VXIbus When you are reading or writing to a module register a hexadecimal or decimal register address is specified This address consists of a base address plus a register offset The base address used in register based programming depends on whether the A16 address space is outside or inside the Agilent E1405 06 Command Module When the Agilent E1405 06 Command Module is not part of your VXIbus system Figure B 1 the Agilent E1328 s base address is computed as C00016 LADDR 64 16 or decimal 49 152 LADDR 64 where C000 16 49 152 is the starting location of the register addresses LADDR is the module s logical address and 64 is the number of address bytes per VXI device For example the Agilent E1328 s factory set logical address is 72 4816 therefore it will have a base address of C00016 72 64 16 C00016 120016 D20016 or decimal 49 152 72 64 49 152 4 608 53 760
55. g amp play Soft Front Panel See VXIplug amp play Online Help W WAI 50 WARNINGS 6 15 Warranty 5 Wiring guidelines 18 maximum gauge 18 54 Write Registers channel output registers 63 64 command register 64 70 parameter register 64 70 status control register 60 62 Agilent E1328A User s Manual Index 91 Notes 92 Agilent E1328A User s Manual Index
56. gure channel 1 to output the minimum voltage 12 volts 50 OUTPUT 70909 OPC Hold program execution until the first output is complete When done generate an operation complete flag 60 ENTER 70909 D Dummy variable holds operation complete flag 70 OUTPUT 70903 MEAS VOLT DC Configure the system voltmeter to make a DC voltage measurement 80 ENTER 70903 A Store minimum voltage reading 90 OUTPUT 70909 VOLT1 DEF Configure channel 1 to output the default voltage 0 volts 100 OUTPUT 70903 MEAS VOLT DC Configure the system voltmeter to make a DC voltage measurement Chapter 3 Using the Agilent E1328A 21 110 120 130 140 150 Comments ENTER 70903 B Store default voltage reading OUTPUT 70909 VOLT1 MAX Configure channel 1 to output the maximum voltage 12 volts OUTPUT 70903 MEAS VOLT DC Configure the system voltmeter for a DC voltage measurement ENTER 70903 C Store maximum voltage reading OUTPUT 70909 CAL1 VOLT A B C Enter the measured minimum default and maximum values New adjustment constants are calculated and stored for channel 1 Test Hook up If possible calibrate to the same load and leads that the D A Converter will be providing the voltage output to Connect the voltmeter leads as close as possible to the load Voltmeter Any 54 digit voltmeter with accuracy of at least 0 015 of reading 1mV can be used when performing the adjustment Agilent recommends
57. inned to prevent single strands from shorting adjacent terminals The other end may have any connection the user determines necessary Do not connect the channel s SENSE terminals if they will not be used for example channel is being configured for a current output or a voltage output without remote sensing TOP VIEW Til ee 000 000 000 000 000 000 000 000 Ss 2 VA 27 N 3 s 1444 2S VA 3 Sta YE la rm W L 1 VA 24 S 34 Ss 3 VAI 444 S 444 xt FRONT VIEW q E CONVERTER Z CHAN D A Figure 2 3 D A Converter Terminals 18 Configuring the Agilent E1328A Chapter 2 Chapter 3 Using the Agilent E1328A Using This Chapter This chapter uses typical examples to show how to use the 4 Channel D A Converter Refer to Chapter 4 Understanding the Agilent E1328 A for more information This chapter contains the following e D A Converter Commands 22222 e een Page 19 e Reset Conditions LL Page 19 e Electronic Vo
58. ions like selecting output level selecting output mode and querying data A subsystem command structure is a hierarchical structure that usually consists of a top level or root command one or more lower level sub commands and their parameters The following example shows an excerpt from a typical subsystem SOURce VOLTagen lt level gt SOURce is the root command VOL Tagen is the second level sub command where n is replaced by the channel number in the range of 1 to 4 and lt level gt is a parameter Chapter 5 Agilent E1328A Command Reference 39 Command A colon always separates one command from the next lower level command as Separator shown below DISPlay MONitor STATe lt mode gt Abbreviated and The command syntax shows most commands as a mix of upper and lower case Short Commands letters The upper case letters indicate the abbreviated spelling for the command For shorter program lines send only the abbreviated form For better program readability you may send the entire command The instrument accepts either the abbreviated form or the entire command For example if the command reference syntax shows the command SOURce then SOUR and SOURce are both acceptable forms Other forms of SOURce such as SOURC will generate an error You may use upper case and lower case letters SOURCE source and SoUrCe are acceptable Implied Implied commands are those which appear in square brackets in the comman
59. ite a 2 to the Status Control Register to keep the SFI bit high and zero the reset bit 5 Wait 100 mS 6 Write a 0 to the Status Control Register w IBASIC Version 10 Base addr DVAL 1FD200 16 Logical Address 72 20 Reg_addr 04 Offset for Status Control Register 30 Write a 2 then a 3 to the Status Register 40 WRITEIO 9826 Base_addr Reg_addr 2 50 WRITEIO 9826 Base_addr Reg_addr 3 60 WAIT 2 wait 200 mS 70 WRITEIO 9826 Base_addr Reg_addr 2 80 WAIT 1 wait 100 mS 90 WRITEIO 9826 Base_addr Reg_addr 0 100 END 72 Agilent E1328A Register Based Programming Appendix B C Version reset the module include lt stdio h gt include lt chpib h gt include lt dos h gt define LOG_ADDR 72 Agilent E1328A Logical Address define BASE _ADDR long 0x1FC000 64 LOG_ADDR function to send values to the Status Register void send_value int base_address int data_value float send data 3 read char state 2 13 10 send_data 0 base_address 4 Status Register offset send_data 1 16 base 16 send_data 2 data_value data value sent to the register IOEOI 7L 0 IOEOL 7L 0 GPIB library call IOOUTPUTS 70900L DIAG POKE 10 GPIB library call IOEOI 7L 1 IOEOL 7L state 0 GPIB library call IOOUTPUTA 70900L send_data 3 GPIB library call main send_value BASE_ADDR 2 send_valu
60. its default state Configure channel I to the non calibrated mode Configure channel 2 to the non calibrated mode Configure channel 1 for current and sets output at terminals to maximum 24 mAdc in non calibrated mode Configure channel 2 for current and sets output at terminals to maximum 24 mAdc in non calibrated mode Load e Sense Terminals Do not make any connection to the SENSE e Compliance Voltage The maximum voltage available when outputting a current from one channel is 13 Vdc This means that at 24 mAdc the load resistance should not exceed 541 See Chapter 4 for further explanation on compliance voltage and load resistance e Isolation Channel to channel or channel to chassis isolation is 250 Vrms 350 Vdc ac peak WARNING Damage may result if channels of the same D A Converter are connected to separate phases of 3 phase power lines Do not exceed the rated isolation voltage 30 Using the Agilent E1328A Chapter 3 Chapter 4 Understanding the Agilent E1328A Using This Chapter This chapter explains techniques to output voltage and current levels using the 4 Channel D A Converter This chapter contains the following sections e Commands for D A Converter Operation Page 31 e Voltage Output cect Page 32 e Remote Sense ir rr pen Page 33 e Current Output Page 36 e Querying the D A Converter Page 37 Commands for D A Converter Operation
61. l provides the best information we could find It may be incomplete or contain dated information Support for your product You can find information about technical and professional services product support and equipment repair and service on the web www keysight com Select your country from the drop down menu at the top Under Zlectronic Test and Measurement click on Services The web page that appears next has contact information specific to your country For more detailed product information go to www keysight com find product model i e for the M9514A use www keysight com find M9514A Hypertext links to documents on agilent com are no longer active Use this substitution to access PDF files Broken links have the form http cp literature agilent com litweb pdf lt literature part number Substitute links with this form http literature cdn keysight com litweb pdf lt literature part number Where lt iterature_part_number gt has the form M9300 90001 pdf For service notes use www keysight com find servicenotes KEYSIGHT TECHNOLOGIES Contents Agilent E1328B User s Manual Warranty Sage po las ee ee nr dd 5 WARNINGS ne men nn e a en eo Del ek 6 Safety Symbols sa s ete e E SA nen 6 Declaration of Conformity ooa aa 7 Users Notes ua Sy Pilg ead aad re ee ab hee Sage a rado 8 Chapter 1 Getting Started with the Agilent E1328A 11 Using This Chapter A RE LL en 11 D A Converte
62. l gt numeric 1 to 4 DEF MIN MAX AUTO 1 Comments Selecting Monitor Channel Values When using the DISPlay MONitor CHANnel command numbers 1 to 4 select a specific channel to be monitored In addition to selecting a specific channel four other values can be entered DEFault and MINimum selects channel 1 MAXimum selects channel 4 and AUTO activates the automatic mode where the last channel changed is displayed e Monitor Mode on an Agilent 1301B Mainframe Display Selecting the channel causes the information to be displayed on the mainframe s front panel The DISPlay MONitor STRing command must be used to display the information on the computer The following shows the monitor mode display string on the display of an Agilent E1301B Mainframe CHAN1 10 00000E01 VOLT CAL 1 The example above shows channel 1 10 Vdc in the calibrated mode e Related Commands DISPlay MONitor STATe Example Selecting Channel 1 for Monitoring DISP MON CHAN 1 Chapter 5 Agilent E1328A Command Reference 45 DISPlay MONitor CHANnel DISPlay MONitor CHANnel lt channel gt performs two different functions dependent on if the parameter lt channel gt is used If lt channel gt is not used blank queries which channel will be displayed when the monitor mode is enabled 1 indicates operating in automatic mode displays the last channel changed 1 through 4 indicates which specific channel will be displayed If lt channel gt is us
63. lated using the following formula N i Rt Vout 0 024 os Lead Resistance 2 Load Where Q Rt total circuit resistance R1 R2 R3 I VA Vout is selected output voltage a For example if 12Vdc is selected the maximum R1 total circuit resistance should be at least 5000 Lead Resistance O Figure 4 2 Output Voltage Compliance Current 32 Understanding the Agilent E1328A Chapter 4 Remote Sense In remote sense mode the D A Converter measures the actual voltage delivered at the load then compensates for any difference between the measured value and the selected value The equivalent output circuit for the D A Converter using remote sense is shown in Figure 4 3 Note Remote sense operation is available for voltage output only During current output the SENSE terminals must remain disconnected DAC 510 Driver V R 10 S 500 V Sense ne 10KO Amplifier I Channel Ground 510 V ze zi Figure 4 3 Remote Sense Operation Maximum Lead When using the D A Converter to output voltage using remote sensing Resistance refer to pages 24 25 the maximum allowable lead resistance is calculated using the following procedure refer to Figure 4 3 1 The driver amplifier s maximum output voltage is less than 19 V 17 V typical when the load resistance is infinite The maximum output curren
64. ltage Adjustment Page 20 e Outputting Voltage ccc ne Page 23 e Electronic Current Adjustment Page 26 e Outputting Current Page 29 D A Converter Commands Table 3 1 D A Converter Commands Used in Chapter 3 Command Description CAL CURRn z z z Used during the current electronic adjustment procedure to update a channel s stored adjustment constants in memory CALn STAT y Selects calibrated ON 1 or non calibrated mode OFF 0 CAL VOLTn z z Z Used during the voltage electronic adjustment procedure to update a channel s stored adjustment constants in memory SOURce JCURRn xxx Causes the D A Converter to output a specific current Channel must be configured for current output refer to page 17 Range is dependent on the mode selected SOURce VOLTn xxx Causes the D A Converter to output a specific voltage Channel must be configured for voltage output refer to page 17 Range is dependent on the mode selected RST Sets the hardware and software to a known state n channel number xxx desired value y ON 1 or OFF 0 and z z z measured minimum default 0 and maximum values SOURce is a command that is implied not required but if it is used delete the brackets and send as SOURce Reset Conditions When the D A Converter is switched on or RST reset all four channels are set to 0 Vdc 0 mAdc output 100 ms
65. ltage case else Rx 02184467 current case K 1 0 Rx 0x7fff b1 K 4 0 0x8000 0x8000 mult by 2432 Kint K 5 round to integer J b0 b1 0x8000 J double Kint 4 0 double 0x8000 divisor is 2217 if J double 0 0 Jint J 5 round to integer else dint J 5 J is negative compute an eight bit checksum checksum Jint amp Oxff checksum Jint gt 8 amp Oxff for i 0 i lt 3 i checksum Kint gt i 8 amp Oxff checksum 1 checksum 1 two s complement checksum amp Oxff truncate to eight bits printf nCalibration constants are as follows for Rx g n Rx printf tU 04x h n Jint printf tK 8lx h n Kint printf tchecksum 02lx h n checksum 70 Agilent E1328A Register Based Programming Appendix B A Register Based Algorithm The following algorithm describes the procedure you would use to program the registers on the Agilent E1328A D A Converter module to output either a voltage or a current START Poll C P RDY Bit 0 of Status Control Register Poll Selected Channel s Status Control Register Settle Bit 8 11 Is Settle Bit 1 Write Most Significant Byte MSB to Selected Channel s Output MSB Register Poll C P RDY Bit BITO o Status Control Register Write Least Significant B
66. ly called EX Extended not CF Checksum failure not bit 4 A zero 0 in this field indicates that the D A Converter s stored adjustment constants did not have the correct checksum and may be incorrect Note If CF is asserted it is recommended that each channel be calibrated in both voltage and current modes before using the D A Converter in the calibrated mode IE Internal exception not bit 5 A zero 0 in this field indicates that the D A Converter has encountered an error in executing its program To clear the error perform the steps below 1 Write correct CAL ON CAL OFF commands to each channel 2 Write correct output data to each channel ignore the state of the settle bits 3 Issue a RESTART command 4 When IE is one 1 repeat steps 1 and 2 5 If this procedure fails perform a soft reset Note Performing a soft reset SR will zero all outputs cause the D A Converter to execute a self test and assert the SYSFAIL line Therefore it is recommended that the SFI bit be set before performing a soft reset to avoid halting mainframe operations Appendix B Agilent E1328A Register Based Programming 61 ER Error not bit 6 A zero 0 in this field indicates that an error has occurred in executing acommand The error condition is cleared on receipt of another command The recommended way of clearing the error condition is by sending the NULL command Channel output operations have no eff
67. m register based 71 Index Agilent E1328A User s Manual Base Address 56 57 Block Diagram 11 Boolean Command Parameters 40 Bytes checksum bytes 67 gain bytes 67 least significant byte LSB 59 63 64 most significant byte MSB 59 63 64 offset bytes 67 C Calibrated Mode disabling 43 enabling 43 output accuracy 12 current example 29 voltage example 23 25 range 11 expanding 24 25 query 43 CALibration Subsystem 42 44 CALibrationn CURRent 19 42 CALibrationn STATe 19 43 CALibrationn STATe 43 CALibrationn VOL Tage 19 44 CAUTIONS 15 Certification 5 Changing Output Level 63 Channel calibrated mode 43 electrically isolated 12 electronic adjustment 67 70 measurement data entering 42 44 mode register 63 monitoring 45 46 output current 27 30 36 expanding range 12 29 30 query 47 selecting 17 47 Agilent E1328A User s Manual Index 85 C continued Channel continued output current continued short circuit protection 12 specified channel 47 output LSB registers 63 64 MSB registers 63 64 registers 63 64 output voltage 23 25 32 expanding range 12 24 25 query 48 selecting 17 48 short circuit protection 12 specified channel 48 query calibrated mode 43 output 46 V I jumper 48 specifying 13 stored current constants updating 26 voltage constants updating 20 Checksum bytes 67 calculating 69 70 Clearing Error Queue 49 CLS 49 50 C
68. me mm 2 sde E g T K LI E g y V l 1 Q Set to lt Voltage i P era Position U Figure 3 2 One Channel Voltage Output Chapter 3 Using the Agilent E1328A 23 Example Voltage Output in Calibrated Mode with Remote Figure 3 3 shows how to connect the sensing terminals to the load The D A Converter physical configuration and instructions are identical to those described earlier Sensing E1328A DAC 4 p B q H B ni Twisted Pair Channel i i a VA 1 N Lj i LJ E E S1 wa E I EN A Br B E g yee v ot Set to y Voltage DI E lt 5 i UN Twisted Pair H Position i Figure 3 3 One Channel Voltage Output with Remote Sensing Example Expanding Voltage Output Range in the Calibrated Mode with Remote Sensing Figure 3 4 shows how to configure channel 1 and 2 output terminals in series to increase the range connecting the sense terminals and connecting to the load The D A Converter must be physically configured to provide voltage output on channels 1 and 2 refer to page 17 and then instructed to output a specific voltage on channels 1 and 2 in order to obtain a total of 20 00000 Vdc in the calibrated mode For the example use an GPIB select code of 7 primary address of 09 and
69. meter are used to enter new offset gain and checksum values These values are calculated from actual channel output measurements then entered into the Parameter Register 66 Agilent E1328A Register Based Programming Appendix B Command format register 0816 is as follows 0100cccch or 4c16 Parameter format register OA 16 consists of seven bytes as follows Offset high byte Offset low byte Gain high byte Gain second byte Gain third byte Gain low byte Checksum byte The procedure to perform an electronic adjustment on a channel is as follows 1 Configure the selected channel s V I jumpers to voltage or current as required refer to page 17 Connect the load and a precision multimeter to the selected channel s V I output terminals Configure the multimeter for voltage or current as required Change the selected channel mode to CAL OFF Output the value 000016 minimum and measure the resulting voltage or current Record the measured value as ym Output the value 800016 default or reset and measure the resulting voltage or current Record the measured value as yo Output the value FFFF16 maximum and measure the resulting voltage or current Record the measured value as yp Calculate the offset J and gain K constants using the equations given below The equations must be calculated using double precision floating point arithmetic A sample program in C to compu
70. nframe DC Current Range 21 8 mA cal on 24 0 MA cal off Resolution 667 nA programming interval cal on 16 bit resolution cal off Monotonic to 4 WA at 25 C Accuracy of output amps Conditions Cal on within 5 C of cal temperature and same load as at calibration 24 hour 0 05 of output 7 WA 90 day 0 15 of output 59 uA 1 year 0 3 of output 220 WA Temperature Coefficient 0 01 1 33 WA C Output Voltage Compliance voltage 13 V Max open circuit voltage lt 19V Typical output impedance gt 25 MQ Differential Ripple and Noise lt 4 UArms in Agilent 75000 mainframe 20 Hz 250 kHz into 100 Q Appendix A Agilent E1328A Specifications 53 General Settling Time Conditions single channel to rated accuracy 750 us cal on 500 us cal off Isolation 250 Vrms 350 Vdc ac peak channel to channel or chassis 15 Vdc ac peak channel to sense Max wire size 16AWG Module Size Device Type B register based Connectors Used Pl No Slots 1 VXIbus Interface Capability Slave A16 D16 Interrupt Level None Power Requirements Voltage 5 12 Peak module current IPM A 0 40 0 50 Dynamic module current IDM A 0 02 0 01 Watts Slot 6 5 Cooling Slot 0 11 mm H20 0 52 liter sec Humidity 65 0 to 40 C Operating Temperature 0 to 55 C Storage Temperature 40 to 75 C EMC RFI Safety meets FTZ 1046 1984 CSA 5
71. odule For more information on Common Commands refer to the Agilent EI300B E1301B User s Manual the Agilent E1406A Command Module User s Manual or the ANSVIEEE Standard 488 2 1987 Command Title Description IDN Identification Query Returns Identification String of the D A Converter RST Reset Performs a 5 second self test places OVdc OmAdc on all channels and then sets the mode of all channels calibrated ON TST Self Test Query Returns 0 unless self test fails OPC Operation Complete See note below OPC Operation Complete Query Returns a 1 if previous operation is complete WAI Wait to Complete See note below CLS Clear Status Register Clears all Status Register see SYSTem ERRor ESE Event Status Enable See note below ESE Event Status Enable Query See note below ESR Event Status Register Query See note below SRE Service Request Enable See note below SRE Service Request Enable See note below Query STB Read Status Byte Query See note below RCL lt n gt Recall Saved State Recalls previously stored D A Converter Module configuration lt n gt indicates location in memory from 0 to 9 SAV lt n gt Save State Stores the current D A Converter Module configuration in memory lt n gt indicates location in Memory from 0 to 9 Note These commands have little or no effect on D A Converter operation Refer to the Agilent E1300B E1301B M
72. ommand Module A16 address space inside 57 A16 address space outside 56 Command Reference 39 52 CALibration subsystem 42 44 CLS 49 50 DISPlay subsystem 45 46 ESE 50 ESE 50 ESR 50 IDN 50 OPC 50 OPC 50 RCL 50 RST 19 50 SAV 50 SOURce subsystem 47 48 SRE 50 SRE 50 STB 50 SYSTem subsystem 49 TST 50 WAI 50 Command Register 64 70 Commands CALibration subsystem 42 44 CLS 49 50 Common Commands 50 common format 39 DISPlay subsystem 45 46 ESE 50 ESE 50 ESR 50 IDN 50 implied SCPI commands 13 in square brackets 13 linking 41 OPC 50 OPC 50 operation commands 31 query 37 quick reference 50 51 IEEE common commands 50 SCPI commands 51 RCL 50 RST 19 50 SAV 50 SCPI format 39 40 selecting SCPI commands 13 SOURce subsystem 47 48 SRE 50 SRE 50 STB 50 SYSTem subsystem 49 TST 50 types 39 used in chapter 3 19 WAI 50 Common Commands 50 CLS 49 50 ESE 50 ESE 50 ESR 50 format 39 IDN 50 linking 41 OPC 50 OPC 50 quick reference 50 RCL 50 RST 19 50 SAV 50 SRE 50 SRE 50 STB 50 86 Agilent E1328A User s Manual Index C continued Common Commands continued TST 50 WAI 50 Common Mode Noise 53 Compliance current 32 voltage 36 Configuring 15 18 Conformity declaration 7 Connecting field wiring 18 sense terminals 18 Current adjustment electronic 26
73. onfigures channel 1 for current and sets output at terminals to 20 000 mAde E1328A DAC Il El p I I E g i m Channel 1 a F E mm Gad E Set to Er E Current i ANI H Position U Figure 3 6 One Channel Current Output Example Expanding Figure 3 7 shows how to configure channel 1 and 2 output terminals in Current Output Range parallel to increase the range and how to connect to the load The D A in the Non Calibrated Converter must be physically configured to provide current output on Mode channels 1 and 2 refer to page 17 and then instructed to output a specific current on channels 1 and 2 in order to obtain a total of 48 00000 mA dc in the non calibrated mode For the example use An GPIB select code of 7 primary address of 09 and secondary address of 09 for the D A Converter An HP Series 200 300 computer with BASIC Chapter 3 Using the Agilent E1328A 29 Execute 10 OUTPUT 70909 RST 20 OUTPUT 70909 CAL1 STAT OFF 30 OUTPUT 70909 CAL2 STAT OFF 40 OUTPUT 70909 CURR1 MAX 50 OUTPUT 70909 CURR2 MAX E1328A DAC H B Channel 2 V I 2 poda TTT on E on P ma MATA e ta Channel 1 so Vv Y 8 Ler Set to EE A 0000000 Le Le 1 f Figure 3 7 Extending Current Output Range Comments terminals when outputting current Reset the D A Converter to
74. peek unsigned short base_addr 0X04 amp 0x04 Function prototypes void setup_dtoa char base_addr int mode int channel float level void reset_dtoa char base_addr void main void char base_addr create and open a device session INST e1328a e1328a iopen vxi 72 map the Agilent E1328A registers into user memory space base_addr imap e1328a MAP_VXIDEV 0 1 NULL function call to reset the D A converter reset_dtoa base_addr function call to set up the D A converter send base address mode voltage 1 any other number current channel 1 4 and level in volts or amps setup_dtoa base_addr 1 1 2 00 outputs 2 0V on channel 1 close session iclose e1328a Appendix B Agilent E1328A Register Based Programming 79 e e ld leale sleale 2 leal a dl lee oe ale 2 nicole ateate dede void setup_dtoa char base_addr int mode int channel float level This function sets up the D A converter to output voltages or currents on the specified channels unsigned short level_word 0 msbyte 0 Isbyte 0 convert voltage or current level to binary number if mode 1 convert voltage level_word unsigned short level 3000 0x8000 msbyte level_word gt gt 8 Isbyte level_word amp OxFF else convert current level_word unsigned short level 1500000 0x8000 msbyte level
75. r DVAL 1FD200 16 20 Msb_addr DVAL 10 16 Channel 1 MSB Register offset 30 Lsb_addr DVAL 12 16 Channel 1 LSB Register offset 40 Poll Status Register Bit 0 RDY 50 REPEAT 60 UNTIL BIT READIO 9826 Base_addr 4 0 70 Verify that Channel settle bit is 1 80 REPEAT 90 UNTIL BIT READIO 9826 Base_addr 4 8 100 Write the MSB 110 WRITEIO 9826 Base_addr Msb_addr DVAL 81 16 120 Poll Status Register Bit 0 RDY 130 REPEAT 140 UNTIL BIT READIO 9826 Base_addr 4 0 150 Write LSB 160 WRITEIO 9826 Base_addr LSB_addr DVAL 2C 16 170 Poll Status Register Bit 0 RDY 180 REPEAT 190 UNTIL BIT READIO 9826 Base_addr 4 0 200 Poll Status Register Bit 7 DON 210 REPEAT 220 UNTIL BIT READIO 9826 Base_addr 4 7 230 END 76 Agilent E1328A Register Based Programming Appendix B C Version Output a Voltage include lt stdio h gt include lt chpib h gt include lt dos h gt h define LOG_ADDR 72 E1328 Logical Address define BASE_ADDR long 0x1FC000 64 LOG_ADDR float send_data 3 read Output data array int msb_addr 0x10 MSB Register address int Isb_addr 0x12 LSB Register address char state 2 13 10 CR LF for data Function to poll Status Register to make certain channel is ready void poll_status_register base_address long bit number float send data 3 read send_d
76. r Description 2 22 22m mon 11 General Description is 2 2 asd re ide nen 11 Instrument Definition cds Pea a id dla ae 12 Programming the D A Converter LL 13 Selecting SCPI Commands 2 2 2 2 oo onen 13 Chapter 2 Configuring the Agilent E1328A 15 Using Ehis Chapter s 4 2 dd e td el 15 Warnings and Cautions LL 15 Setting the Logical Address Switch LL 16 Selecting Voltage or Current Output LL 17 Connecting Field Wiring 2 22 18 Warns Guidelines 2 2 4 E28 2222 dee er ed 18 Chapter 3 Using the Agilent E1328A Coon 19 Using This Chapter 4 2 2203 ae man Re EHEN 19 D A Converter Commands 0 2 2 00 eee ee 19 Reset Conditions meast Pe wesley ek dana di di So ee OR daw Sd 19 Electronic Voltage Adjustment ooa 20 Example Electronic Voltage Adjustment Using a System Voltmeter 21 Outputting Voltage it Lo tue id it da 23 Example Voltage Output in Calibrated Mode 2 222 nennen 23 Example Voltage Output in Calibrated Mode with Remote Sensing 24 Example Expanding Voltage Output Range in the Calibrated Mode with Remote Sensing e a a o a aai o a 24 Electronic Current Adjustment 26 Example One Channel Electronic Current Adjustment Using an External Multimeter aoaaa e 27 Outputting Current LL 29 Example One Channel Current Output in Calibrated Mode 29 Example Expanding Current Output Range in the Non Calibrated Mode 29
77. r4 1 lt mode gt boolean 0 1 ON OFF 1 ON Comments Channel Number Select only one channel at a time e Related Commands CALibrationn CURRent CALibrationn VOLTage SOURce VOLTagen SOURce CURRentn e RST Condition CALibration STATe 1 Example Setting Channel 3 to Non Calibrated Mode CAL3 STAT OFF Set channel 3 mode to non calibrated output CALibrationn STATe CALibrationn STATe queries a specific channel about the currently selected mode of operation 1 one indicates operating under calibrated mode and 0 zero indicates operating under non calibrated mode Chapter 5 Agilent E1328A Command Reference 43 Note Parameters CALibrationn VOLTage CALibrationn VOLTage lt measured MIN MAX DEF gt is used to enter a channel s measurement data obtained during an electronic voltage adjustment These values are used to update the stored adjustment constants The three measured values are MINimum 12V DEFault 0V and MAXimum 12V During an electronic adjustment the output voltage must be measured with the channel configured in the non calibrated mode CALibrationn STATe OFF Ifthe output voltage is measured in the calibrated mode CALibrationn STATe ON and these measured values are entered using the CALibrationn VOLTage command output voltage errors will result when the channel is used in the calibrated mode Parameter Name Parameter Type Range of Values Default Value
78. rated zero w weighting factor for relative importance of zero w 3 65 is the recommended weighting factor w 1 yields conventional least squares algorithm The DAC characteristic is modeled as y b1 x bO The coefficients b1 and bO are used to calculate the actual calibration constants J and K dac_line yp y0 ym w b1 bO double yp y0 ym w b1 b0 double u 2 M 2 2 N 2 2 d u 0 ym w yO yp u 1 w 0x8000 yO OxFFFF yp M 0 0 w 2 M 0 1 0x8000 w OxFFFF M 1 0 M 0 1 M 1 1 w double 0x8000 0x8000 double OxFFFF OxFFFF d M 0 0 M 1 1 M 0 1 M 1 0 N 0 0 M 1 1 d N 0 1 M 0 1 d Appendix B Agilent E1328A Register Based Programming 69 N 1 0 M 1 0 d N 1 1 M 0 0 d b0 N 0 0 u 0 N 0 1 u 1 b1 N 1 0 u 0 N 1 1 u 1 return main int i Jint double yp y0 ym b1 bO w J K Rx unsigned long Kint checksum char string 81 w 3 65 may be changed if desired printf nEnter yp yO ym in Volts or Amps n prompt for data gets string sscanf string lf lf lf amp yp amp y0 amp ym dac_line yp y0 ym w amp b1 amp b0 find best fit line printf nCoefficients of best fit line using w g n w printf tb1 g n b1 printf tb0 g n b0 compute cal constants from best fit line if yp 1 Rx 10 92233 vo
79. rns the types of modules cards Subsystem Syntax SYSTem ERRor SYSTem ERRor SYSTem ERRor returns the error numbers and error messages in the error queue See Appendix C for a listing of the error numbers and messages Comments Error Numbers Messages in the Error Queue Each error generated by the D A Converter stores an error number and corresponding error message in the error queue Each error message can be up to 255 characters long e Clearing the Error Queue An error number message is removed from the queue each time the SYSTem ERRor command is sent The errors are cleared first in first out When the queue is empty each SYSTem ERRor command returns 0 No error To clear all error numbers messages in the queue execute the CLS command see the mainframe operating manual e Maximum Error Numbers Messages in the Error Queue The queue holds a maximum of 30 error numbers messages for the D A Converter Ifthe queue overflows the last error number message in the queue is replaced by 350 Too many errors The least recent error numbers messages remain in the queue and the most recent are discarded Example Reading the Error Queue This command queries the error queue reads and prints the numbers message SYST ERR Chapter 5 Agilent E1328A Command Reference 49 IEEE 488 2 Common Command Quick Reference The following table lists the IEEE 488 2 Common Commands that can be executed by the D A Converter M
80. ross R is also the change in voltage between V and S for electronic adjustment versus actual operating conditions As discussed in the preceding section this change in the voltage between V and S produces an output error of approximately 0 05 of the voltage between V and S In this case Output Error 0 0005 Vs R 0 0005 VL RL For the circuit shown in Figure 4 5 the additional output error caused by the change in lead resistance after electronic adjustment is 0 005 of the load voltage Chapter 4 Understanding the Agilent E1328A 35 Current Output Co fro Maxi Mi be R Whe R The proper sequence of operation for outputting a current from the D A Converter is provided below Refer as necessary to Chapters 2 and 3 for additional operating information 1 mum Ve is 13V for each channel t 13 0 lout 7 lout is selected output current For tota V um allowable total circuit resistance can S calculated using the following formula total circuit resistance R1 R2 R3 Determine the number of current outputs required and configure the necessary channel jumpers for current refer to page 17 Connect the output leads to the correct channel V I and terminals refer to page 18 Do not connect anything to the S and terminals If extending the output range connect the required number of channels in parallel to obtain the desired output refer to page 29 Verif
81. s CALibrationn keyword 1 2 3 0r4 4 lt measured gt numeric 15 0 to 8 0 1 0 to 1 0 Volts 8 0 to 15 0 Comments Channel Number Select only one channel at a time e Related Commands CALibrationn STATe SOURce VOLTagen e Measured Values Three values MIN DEF MAX are measured in the non calibrated mode then entered to 5V gt digits Once entered the D A Converter calculates and stores new adjustment constants These stored constants are used to maintain the channel s accuracy in the output voltage calibrated mode Example Entering Channel 2 Measurement Data This command enters the minimum default and maximum measured values channel 2 output during an electronic adjustment procedure CAL2 VOLT 12 00346 0 00352 11 98342 44 Agilent E1328A Command Reference Chapter 5 DISPlay The DISPlay subsystem monitors the channel state of a selected module in a mainframe This command operates with mainframes that have a display such as the Agilent E1301B Mainframe Subsystem Syntax DISPlay MONitor CHANnel lt channel MIN MAX DEF AUTO gt CHANnel lt channel gt STATe lt mode gt STRing DISPlay MONitor CHANnel DISPlay MONitor CHANnel lt channel MIN MAX DEF AUTO gt selects the channel to be monitored when the monitor mode is enabled Parameters Parameter Name Parameter Type Range of Values Default Values lt channe
82. s under actual operating conditions Whenever possible perform electronic adjustments with the D A Converter connected to the leads and load to be used in operation An electronic adjustment performed under actual operating conditions provides the best output accuracy If an electronic adjustment is performed with a different V lead resistance than that encountered under actual operating conditions small errors will occur in the output voltage due to the effect of the 51 protection resistor mentioned in the preceding section Operation with Fixed Voltage Sources in Series 34 Understanding the Agilent E1328A Chapter 4 As an example suppose there was a difference of 1000 between the lead resistances used for the electronic adjustment and those encountered under actual operating conditions This would cause the voltage between V and S during electronic adjustment to be different than the voltage between V and S under actual operating conditions The output error produced can be understood by referring to the example shown in Figure 4 5 and the following explanation R 1009 i mA S RL 10000 VL z Vs N R 1000 1328 Fig4 5 Figure 4 5 Lead Resistance and Electronic Adjustment R is the change in lead resistance The difference in voltage drop across R between the electronic adjustment and actual operating conditions is as follows R Vs VL RL This difference in voltage drop ac
83. sage on screen instructs to record the measurement on the multimeter as minimum 60 INPUT ENTER RECORDED MIN A Message on screen instructs to enter the recorded minimum value Enter and press RETURN 70 OUTPUT 70909 CURR1 DEF Configure channel 1 to output the default current 0 mAdc 80 PRINT RECORD AS DEFAULT Message on screen instructs to record the measurement on the multimeter as default 90 INPUT ENTER RECORDED DEF B Message on screen instructs to enter the recorded default value Enter and press RETURN 100 OUTPUT 70909 CURR1 MAX Configure channel 1 to output the maximum current 24 mAdc 110 PRINT RECORD AS MAXIMUM Message on screen instructs to record the measurement on the multimeter as maximum 120 INPUT ENTER RECORDED MAX C Message on screen instructs to enter the recorded maximum value Enter and press RETURN 130 OUTPUT 70909 CAL1 CURR A B C Enter the measured minimum default and maximum values New adjustment constants are then calculated and stored for channel 1 Chapter 3 Using the Agilent E1328A 27 E1328A DAC T poo AM oo ore Cna O eo 00000000 pudo a T Gase 5457A QSense Input HO Gu Moe o LO I Channel 1 Load Figure 3 5 Electronic Current Adjustment Set to Current
84. secondary address of 09 for the D A Converter an HP Series 200 300 computer with BASIC Execute 10 OUTPUT 70909 RST Reset the D A Converter to its default state 20 OUTPUT 70909 VOLT1 10 00000 Configure channel 1 for voltage and sets output at terminals to 10 00000 V in the calibrated default mode 30 OUTPUT 70909 VOLT2 10 00000 Configure channel 2 for voltage and sets output at terminals to 10 00000 V in the calibrated default mode 24 Using the Agilent E1328A Chapter 3 E1328A DAC E Twisted Pair g N q Channel 2 zen v SZ D i DUT ces V I 2 puda coss eo 3 wi E mm E S1 E Set to i RT V 1 TY E Voltage Co P E i Position U Twisted Pair Figure 3 4 Extending Voltage Output Range Comments e Sense Terminals Use of remote sensing is recommended to compensate for voltage drops in the test leads This ensures an accurate voltage is present at the load If not in use do not make any connection to the SENSE terminals e Compliance Current The maximum current available when outputting a voltage is 24 mAdc This means that at 12 Vdc the load resistance should be at least 5000 See Chapter 4 for further e
85. stment unless another person capable of rendering first aid and resuscitation is present DO NOT substitute parts or modify equipment Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the product Return the product to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained 6 Agilent E1328A 4 Channel D A Converter Module User s Manual Declaration of Conformity Declarations of Conformity for this product and for other Agilent products may be downloaded from the Internet There are two methods to obtain the Declaration of Conformity e Gotohttp regulations corporate agilent com DoC search htm You can then search by product number to find the latest Declaration of Conformity e Alternately you can go to the product web page www agilent com find E1328A click on the Document Library tab then scroll down until you find the Declaration of Conformity link Notes 8 Agilent E1328A 4 Channel D A Converter Module User s Manual Notes Agilent E1328A 4 Channel D A Converter Module User s Manual 9 Notes 10 Agilent E1328A 4 Channel D A Converter Module User s Manual Chapter 1 Getting Started with the Agilent E1328A Using This Chapter This chapter describes the Agilent E1328A 4 Channel D A Converter module and contains information on how to program it using SCP
86. t adjustment constants for both voltage and current which are updated by performing the appropriate electronic adjustment procedure see Chapter 3 The electronic adjustment procedures used to update the channel s stored voltage and or current adjustment constant in memory requires only a multimeter 5Y digit 0 015 of reading 1 mV accuracy to complete If a system multimeter is used the electronic adjustment procedures can also be automated The four channels are electrically isolated from each other and from chassis ground This allows the usable output range voltage and or current to be expanded by linking multiple channels For example the output voltage range can be expanded to 48 Vdc by linking channels in series and the output current range can be expanded to 96 mAdc by linking channels in parallel Both voltage and current outputs on all channels are provided with output short circuit protection Additionally each channel configured for outputting voltage has no fault remote sensing capability to ensure accurate voltages at the load If one of the sense leads become disconnected the D A Converter will automatically revert to local sensing The AC FAIL line from the mainframe is constantly monitored by the D A Converter Ifpower fails the D A Converter channels are shut down to conserve power and provide greater hold up time for the mainframe power supplies Instrument Definition Agilent plug in modules installed in
87. t available is 24 mA The maximum load voltage VL max is normally 10 92 V and never exceeds approximately 12 V The maximum load voltage is calculated as follows VL max 24mA Rioad The maximum voltage drop allowed across the resistance of the leads V drop max is calculated as follows y Varoptmax 17 Vimax 1010 Ga O Therefore the maximum allowable lead resistance Riead is Rlead Proponen Rload L max Chapter 4 Understanding the Agilent E1328A 33 Operation with Fixed Voltage Sources in Series Adjustment Under Actual Lead and Load Conditions Ifa fixed voltage must be placed in series with the load connect the voltage source to the V lead for the most accurate output An example of this type of application is shown in Figure 4 4 The emitter follower configuration increases the total available output current S ru twisted pairs Road S V V Figure 4 4 Emitter Follower Configuration External Supply If the fixed voltage source is placed in the V lead a small error will occur in the output voltage An output error of approximately 0 05 of the voltage between V and S occurs due to the 51Q protection resistor in series with the S terminal This error does not occur if the voltage between V and S is due solely to lead resistance provided that an electronic adjustment has been performed with the same load and lead configuration a
88. te the J K and checksum steps 7 to 8 is listed below If the sample program is used proceed to step 9 Calculate bo and b as follows pl al ind ep ac O Dee bj dp cq dp cq Appendix B Agilent E1328A Register Based Programming 67 w 3 65 ym measured value in step 4 yo measured value in step 5 yp measured value in step 6 a ym w y0 2 DGp p wt2 e q 29m 21 1 20m 2252 44 T Calculate J and K as follows ped iena ZA bo k 215 J Li 7 where R 10 92233 for volts 0 02184467 for current K should be rounded to a 32 bit unsigned integer Use the rounded value of K to compute J Round J to the nearest integer and express in 8 bit two s complement form NOTE For maximum speed precompute the actual output data using the following equation and operate the Agilent E1328A in uncalibrated mode kxx pede gt where x desired output code calculated as shown under Channel Output Registers on page 63 and y value actually sent to the Agilent E1328A 8 Compute a checksum by adding the 6 bytes representing J and K on an 8 bit wide basis and taking the two s complement of the result Checksum is defined to be that number which causes all seven bytes to sum to zero in byte wide arithmetic For example in hex if offset J is OB 7C and gain K is 16 F8 F2 1A as calculated in step 6 then checksum would be SF 9 Use the CALIBRA
89. ter parameters as follows 3 Poll the Status Control Register until C P RDY is asserted 1 4 Write a Parameter byte to the Parameter Register 0A 16 5 Repeat steps 3 and 4 as required to send all parameters Note The D A Converter channel number physical markings and SCPI commands are numbered from 1 to 4 but for register based programming the channels are numbered 0 to 3 respectively Commands referencing higher channel numbers than 3 will be ignored and the ER bit will be set to one 1 after receipt of the final parameter In the command formats given XXX don t care CCCC channel number from 0 to 3 b binary and 16 hex NULL Resets the ER bit of the Status Control Register and terminates any pending command The NULL command does not have a parameter Command format is as follows 0000xxxxb or 0x16 CAL OFF Disables gain and offset adjustment for the indicated channel providing greater speed and output range but less accuracy The CAL OFF command does not have a parameter Command format is as follows 0010ccccp or 2c16 For example the command 00100000p or 2016 sets channel 1 mode to non calibrated CAL OFF Appendix B Agilent E1328A Register Based Programming 65 CAL ON Enables gain and offset adjustment for the indicated channel providing greater accuracy but less speed and output range The CAL ON command does not have a parameter Command format is as follows 001 1cccch or 3c 6 For e
90. the actual output at the load Set the channel s output to default 0 mAdc Measure and record to 51 digits the actual output at the load Set the channel s output to maximum 24 mAdc Measure and record to 5 digits the actual output at the load Record the minimum default and maximum values and send them as parameters to the CALibration command New adjustment constants will be calculated and stored from the entered values Repeat steps 2 through 7 for all desired channels 26 Using the Agilent E1328A Chapter 3 Example One Channel Electronic Current Adjustment Using an External Multimeter Figure 3 5 shows how to connect channel 1 output terminals to the load and external multimeter Agilent 3457A The D A Converter must be physically configured to provide current output on channel 1 refer to page 17 and then instructed to perform the adjustment For the example use An GPIB select code of 7 primary address of 09 and secondary address of 09 for the D A Converter An HP Series 200 300 computer with BASIC Execute 10 REAL A B C Define variables used to store measured values 20 OUTPUT 70909 RST Reset the D A Converter to its default state and performs a self test 30 OUTPUT 70909 CAL1 STAT OFF Configure channel 1 to the non calibrated mode 40 OUTPUT 70909 CURR1 MIN Configure channel 1 to output the minimum current 24 mAdc 50 PRINT RECORD AS MINIMUM Mes
91. unsigned short base_addr offset iwpoke unsigned short base_addr offset data INST device_name device_name iopen vxi logical address base _addr imap device_name _ MAP_VXIDEV 0 1 NULL LADDR Agilent E1328A logical address 72 LADDR 64 16 Multiply quantity then convert to a hexadecimal number e g 72 64 16 120016 When using DIAG PEEK and DIAG POKE the width number of bits is either 8 or 16 58 Agilent E1328A Register Based Programming Appendix B Register Definitions Table B 2 lists the registers on the Agilent E1328A 4 Channel D A Converter Module and whether you can read or write to the registers Table B 2 Register Map Register Offset Definition High Byte Low Byte 1E16 Channel 4 LSB Output write only ignored Channel 4 Least Significant Byte LSB 1C16 Channel 4 MSB Output write only ignored Channel 4 Most Significant Byte MSB 1A16 Channel 3 LSB Output write only ignored Channel 3 LSB 1816 Channel 3 MSB Output write only ignored Channel 3 MSB 1616 Channel 2 LSB Output write only ignored Channel 2 LSB 1416 Channel 2 MSB Output write only ignored Channel 2 MSB 1216 Channel 1 LSB Output write only ignored Channel 1 LSB 1016 Channel 1 MSB Output write only ignored Channel 1 MSB 0E16 reserved reserved 0C16 reserved reserved OAi6 Parameter Register ignored Parameter
92. with the channel configured in the non calibrated mode CALibrationn STATe OFF Ifthe output current is measured in the calibrated mode CALibrationn STATe ON and these measured values are entered using the CALibrationn CURRent command output current errors will result when the channel is used in the calibrated mode Parameters Parameter Name Parameter Type Range of Values Default Values CALibrationn keyword 1 2 3 0r4 1 lt measured gt numeric 0 030 to 0 015 0 005 to 0 005 Amps 0 015 to 0 030 Comments Channel Number Select only one channel at a time e Related Commands SOURce CURRentn CALibrationn STATe e Measured Values Three values MIN DEF MAX are measured in the non calibrated mode then entered to 5V gt digits Once entered the D A Converter calculates and stores new adjustment constants These stored constants are used to maintain the channel s accuracy in the output current calibrated mode 42 Agilent E1328A Command Reference Chapter 5 Example Entering Channel 4 Measurement Data This command enters the minimum default and maximum measured values channel 4 output during an electronic adjustment procedure CAL4 CURR 0 02359 0 00012 0 02405 CALibrationn STATe CALibrationn STATe lt mode gt enables or disables the calibrated mode for a specific channel Parameters Parameter Name Parameter Type Range of Values Default Values CALibrationn keyword 1 2 3 o
93. xample the command 001100015 or 3116 sets channel 2 mode to calibrated CAL ON CHECKSUM Checksums the stored adjustment constants for the specified channel and sets the ER bit accordingly ER is asserted low if checksum is bad and deasserted high if good The CHECKSUM parameter bit m is 0 to check current mode constants and 1 to check voltage mode constants The state of the D A Converter module s V I jumpers is ignored Command format register 0816 is as follows 0101ccccp or 5c16 Parameter format register OA 16 is as follows m is parameter 0000000mp or 0mi6 For example the Command 01010010p or 5216 0816 Register and Parameter 00000001p or 0116 0A16 Register performs a checksum on the adjustment constant for channel 3 voltage ZERO ALL Writes uncalibrated zero to all channels as quickly as possible The ZERO ALL command does not have a parameter Command format is as follows 10101010p or AA 16 RESTART This command is used to recover from AC FAIL and IE conditions Command format is as follows 11110000p or F016 Parameter format is as follows fixed parameter 111101115 or F716 CALIBRATE Used to change a channel s stored voltage and or current adjustment constant The state of the channel s V I jumpers determines which constant is entered These constants are used by the D A Converter to maintain the required output accuracy when in the calibrated mode The CALIBRATE command and para
94. xplanation on compliance current and load resistance e Isolation Channel to channel or channel to chassis isolation is rated at 250 Vrms 350 Vdc ac peak WARNING Do not exceed the rated isolation voltage Damage may result if channels of the same D A Converter are connected to separate phases of 3 phase power lines e Incorrect Jumper Setting If a channel is configured for current and instructed to output voltage an error will be generated Chapter 3 Using the Agilent E1328A 25 Electronic Current Adjustment The electronic current adjustment is used to update the stored current constants for each channel and should be performed on initial set up periodically 24 hours or 90 days to maintain desired output accuracy see Appendix A when a 5 C change in temperature from last adjustment performed has occurred when the type of load is changed or anytime accuracy is in doubt The adjustment procedure is performed for each channel as follows 1 Configure the desired channel s for current output refer to page 17 Connect the load to the desired D A Converter channel Connect a multimeter to measure current at the load Setthe D A Converter channel to the non calibrated mode Note The electronic adjustment must be performed in the non calibrated mode step 3 or errors in the adjustment constant will occur Set the channel s output to minimum 24 mAdc Measure and record to 5 digits
95. y that the compliance voltage will not be exceeded by calculating the total circuit resistance using Figure 4 6 Install the D A Converter in the Mainframe and connect the output leads to the load refer to Chapter 3 Determine if an electronic current adjustment is necessary refer to page 26 Enter and execute the proper instructions to output the desired current s and the desired mode refer to pages 29 30 pliance Current Vc is the total voltage drop the V I terminal to the V I terminal Channel E RS Q Lead Resistance Ic S E R2 Load V I example if 12mAdc is selected the maximum R1 circuit resistance should not exceed 541 6 Q Lead Resistance Figure 4 6 Output Current Compliance Voltage Note The compliance current is 24 mA The maximum short circuit current e g R2 0 in Figure 4 6 is limited to lt 30 mA by the Agilent E1328A 36 Understanding the Agilent E1328A Chapter 4 Querying the D A Converter This section summarizes the query commands you can use to determine the configuration or state of the D A Converter All commands end with the which puts the data into the output buffer where you can retrieve it Calibration mode state Current output level Display channel selected Display present output setting System error V I jumper position Voltage output level CALibraten STATe
96. yte LSB to Selected Channel s Output LSB Register Poll C P RDY Bit BitO of Status Control Register Poll DON Bit BIT of Status Control Register END or Repeat for next channel Figure B 3 Register Based Programming Algorithm Appendix B Agilent E1328A Register Based Programming 71 Programming Examples The examples in this section demonstrate how to program the module at the register level The programs follow the algorithm described in a previous section The examples include Resetting the Module Reading the ID Device Type and Status Registers Outputting a Voltage or Current System The following example programs were developed with the module at logical Configuration address 72 The BASIC programs were developed using the Agilent E1300 mainframe Series B IBASIC language The C language programs were developed on an HP Vectra PC IBM PC compatible using Borland s Turbo C programming language the Agilent 82335 GPIB Interface and GPIB Command Library The last C language programming example was developed on the Agilent RADI EPC7 Embedded Controller Resetti ng the The following program resets the Agilent E1328A D A Converter module Module The process is as follows 1 Write a 2 to the Status Control Register to set SFI high 2 Write a 3 to the Status Control Register to keep the SFI bit high and set the reset bit Wait 200 mS 4 Wr

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