VXI VT1419A Multifunction Plus User Manual
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SM
View
Instra
bus
VT1419A
Plus
Multifunction
Measurement and Control Module
User’s Manual
APPLICABILITY
This manual edition is intended for use with the following instrument drivers:
·
Downloaded driver revision A.01.02 or later for Command Modules
·
C-SCPI driver revision D.01.02 or later
Call your local VXI Technology Sales Office for information on other drivers.
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Copyright © VXI Technology, Inc., 2005
P/N: 82-0075-000
Printed: August 15, 2005
Printed in U.S.A.
Certification
VXI Technology,Inc., certifies that this product metits published specifications at the timeof shipment fromthe factory. VXI Technology
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 VXI Technology product is warranted against defects in materials and workmanship for a period of three years from date of
shipment. Duration and conditions of warranty for this product may be superseded whenthe product is integratedinto (becomes a partof)
other VXITechnology products. During thewarranty period, VXI Technology, will,at its option,either repair orreplace products which
prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by VXI Technology. Buyer shall prepay
shipping charges to VXI Technology and VXI Technology shall pay shipping charges to return the product to Buyer. However, Buyer
shall pay all shipping charges, duties, and taxes for products returned to VXI Technology from another country.
VXI Technology warrants that its software and firmware designated by VXI Technology for use with a product will execute its
programming instructions whenproperly installed onthat product. VXI Technology does not warrant that the operation of theproduct 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 andimplementation of any circuit onthis product is the soleresponsibility of the Buyer. VXI Technology doesnot warrant the
Buyer’s circuitry or malfunctions of VXI Technology products that result from the Buyer’s circuitry. In addition, VXI Technology does
not warrant any damage that occurs as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. VXI TECHNOLOGY SPECIFICALLY DISCLAIMS THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREINAREBUYER’SSOLE AND EXCLUSIVE REMEDIES. VXI TECHNOLOGY SHALL NOT
BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER BASED
ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. VXI TECHNOLOGY 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. VXI Technology 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. All rights are reserved. No part ofthis document may be photocopied,
reproduced, or translated to another language without the prior written consent of VXI Technology. VXI Technology assumes no
responsibility for the use or reliability of its software on equipment that is not furnished by VXI Technology.
Restricted Rights Legend
U.S. Government Restricted Rights. The Software and Documentation have been developed entirely at private expense. They are
delivered and licensedas “commercial computer software” asdefined in DFARS 252.227- 7013(Oct1988), DFARS 252.211-7015 (May
1991) or DFARS 252.227-7014 (Jun 1995), as a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as
defined in FAR 52.227-19 (Jun 1987)(or any equivalent agency regulation or contract clause), whichever is applicable. You have only
those rights provided for such Software and Documentation by the applicable FAR or DFARS clause or the VXI Technology standard
software agreement for the product involved.
2
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Safety Symbols
Instruction manual symbol affixed to
product. Indicates that the user must refer
Alternating current (ac).
to the manual for specific WARNING or
CAUTION information to avoid personal
injury or damage to the product.
Direct current (dc).
Indicates hazardous voltages.
Indicates the field wiring terminal that must
be connected to earth ground before
operating the equipment—protects against
electrical shock in case of fault.
or
Frame or chassis ground
terminal—typically connects to the
WARNING
CAUTION
equipment’s metal frame.
Calls attention to a procedure, practice or
condition that could cause bodily injury or
death.
Calls attention to a procedure, practice, or
condition that couldpossibly cause damage to
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. VXI Technology assumes no liability for the customer’s failure to comply with
these requirements.
Ground the equipment: For 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 dangerouselectrical shock, DO NOTperform procedures involving cover or shield removal unlessyou
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 a VXI Technology Sales and Service
Office for service and repair to ensure that safety features are maintained.
Note for European Customers
If this symbolappears on your product,itindicates that it was manufactured after August 13,2005.This markisplaced in accordance with EN
50419, Marking of electrical and electronic equipment in accordance with Article 11(2) of directive 2002/96/EC (WEEE). End-of-life
product can be returned to VTI by obtaining an RMA number.Feesforrecyclingwillapplyif not prohibited by national law. SCP cards for use
with the VT1415A have this mark placed on their packaging due to the densely populated nature of these cards.
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Table of Contents
Warranty ................................................................. 2
Warnings ................................................................. 3
Safety Symbols ............................................................ 3
Note for European Customers .................................................3
Support Resources......................................................... 13
Chapter 1. Getting Started ....................................................... 15
About This Chapter ........................................................15
Configuring the VT1419A .................................................. 15
Setting the Logical Address Switch.......................................... 15
Installing SCPs ......................................................... 16
Disabling the Input Protect Feature (Optional) ................................. 21
Disabling Flash Memory Access (Optional) ...................................21
Instrument Drivers......................................................... 23
About Example Programs ................................................... 23
Verifying a Successful Configuration ..........................................23
Chapter 2. Field Wiring.......................................................... 25
About This Chapter ........................................................25
Planning the Wiring Layout ................................................. 25
SCP Positions and Channel Numbers ........................................ 25
SCP Types and Signal Paths ............................................... 25
Pairing Sense and Source SCPs for Resistance Measurements .....................27
Planning for Thermocouple Measurements....................................28
Faceplate Connector Pin-Signal Lists .......................................... 29
Optional Terminal Modules ................................................. 30
The SCPs and Terminal Module Connections.................................. 30
Option 11 Terminal Module Layout ......................................... 31
Option 12 Terminal Module Layout ......................................... 32
Reference Temperature Sensing with the VT1419A...............................33
Configuring the On-Board/Remote Reference Jumpers ............................34
Preferred Measurement Connections .......................................... 36
Wiring and Attaching the Terminal Module .....................................39
Attaching/Removing the VT1419A Terminal Module .............................41
Adding Components to the Option 12 Terminal Module ........................... 43
Option 11 Terminal Module Wiring Map .......................................44
Option 12 Terminal Module Wiring Map .......................................45
The Option A3F .......................................................... 46
Chapter 3. Programming the VT1419A Multifunction
About This Chapter ........................................................47
Overview of the VT1419A Multifunction
Multifunction
Operating Model .......................................................... 52
Executing The Programming Model ...........................................53
Power-On and *RST Default Settings ........................................ 53
Setting Up Analog Input and Output Channels ................................... 56
Configuring Programmable Analog SCP Parameters ............................56
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Plus
.................................47
Plus
Plus
?........................................................ 48
....................................48
Setting Filter Cutoff Frequency ............................................. 57
Linking Channels to EU Conversion ......................................... 58
Linking Output Channels to Functions ....................................... 66
Setting Up Digital Input and Output Channels ................................... 66
Setting Up Digital Inputs .................................................. 66
Setting Up Digital Outputs ................................................ 67
Performing Channel Calibration (Important!)....................................71
Defining C Language Algorithms ............................................ 73
Global Variable Definition ................................................ 73
Algorithm Definition ..................................................... 74
Pre-Setting Algorithm Variables ............................................74
Defining Data Storage ...................................................... 75
Specifying the Data Format ................................................ 75
Selecting the FIFO Mode.................................................. 76
Setting up the Trigger System ................................................ 77
Arm and Trigger Sources ................................................. 77
Programming the Trigger Timer ............................................ 79
Setting the Trigger Counter ................................................79
Outputting Trigger Signals ................................................ 79
Initiating/Running Algorithms ............................................... 80
Starting Algorithms ...................................................... 80
The Operating Sequence .................................................. 81
Retrieving Algorithm Data .................................................. 81
Modifying Running Algorithm Variables .......................................85
Updating the Algorithm Variables and Coefficients .............................85
Enabling and Disabling Algorithms ......................................... 85
Setting Algorithm Execution Frequency ......................................86
Example Command Sequence................................................ 86
Using the Status System .................................................... 88
Enabling Events to be Reported in the Status Byte ..............................91
Reading the Status Byte................................................... 92
Clearing the Enable Registers .............................................. 93
The Status Byte Group’s Enable Register .....................................93
Reading Status Groups Directly ............................................ 93
VT1419A Background Operation .............................................94
Updating the Status System and VXIbus Interrupts ............................... 95
Creating and Loading Custom EU Conversion Tables .............................96
Compensating for System Offsets ............................................. 97
Special Considerations.................................................... 99
Detecting Open Transducers ................................................100
More On Auto Ranging.................................................... 101
Settling Characteristics .................................................... 101
Background ........................................................... 101
Checking for Problems .................................................. 102
Fixing the Problem ..................................................... 102
Chapter 4. The Algorithm Language and Environment ..............................105
About This Chapter .......................................................105
Overview of the Algorithm Language......................................... 106
Example Language Usage ................................................107
The Algorithm Execution Environment ....................................... 108
The Main Function
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..................................................... 108
How User Algorithms Fit In .............................................. 108
Accessing the VT1419A’s Resources .........................................109
Accessing I/O Channels.................................................. 110
Defining and Accessing Global Variables....................................111
Determining First Execution (First_loop) .................................... 111
Initializing Variables .................................................... 112
Sending Data to the CVT and FIFO ........................................ 112
Setting a VXIbus Interrupt ............................................... 113
Calling User Defined Functions ........................................... 114
Operating Sequence....................................................... 114
Overall Sequence....................................................... 114
Algorithm Execution Order ............................................... 116
Defining Algorithms (ALG:DEF) ............................................ 116
ALG:DEFINE in the Programming Sequence................................. 116
ALG:DEFINE’s Two Data Formats ........................................ 117
Changing an Algorithm While It Is Running ................................. 118
A Very Simple First Algorithm..............................................120
Writing the Algorithm ...................................................120
Running the Algorithm .................................................. 120
Non-Control Algorithms ................................................... 121
Data Acquisition Algorithm .............................................. 121
Process Monitoring Algorithm ............................................ 121
Algorithm Language Reference ............................................. 122
Standard Reserved Keywords ............................................. 122
Special VT1419A Reserved Keywords ...................................... 122
Identifiers............................................................. 122
Special Identifiers for Channels............................................ 123
Operators ............................................................. 123
Intrinsic Functions and Statements ......................................... 124
Program Flow Control ................................................... 124
Data Types............................................................ 125
Data Structures ........................................................ 126
Using Type Float in Integer Situations ...................................... 127
Language Syntax Summary................................................. 129
Program Structure and Syntax...............................................133
Declaring Variables ..................................................... 133
Assigning Values....................................................... 133
The Operations Symbols ................................................. 134
Conditional Execution ................................................... 134
Comment Lines ........................................................ 136
Overall Program Structure................................................ 137
About This Chapter .......................................................139
Wiring Connections and File Locations for the Examples ......................... 143
Example File Location................................................... 143
Installing Example Files ................................................. 143
Virtual Front Panel Program ................................................ 144
Calibration.............................................................. 147
Function Test............................................................ 148
Programming Model Example............................................... 149
Error Checking .......................................................... 152
Configuration Display
..................................................... 153
Engineering Unit Conversion ............................................... 154
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Custom Function Generation................................................ 156
Custom EU/Function Example .............................................. 158
Curve Fitting and EU Generation ............................................ 160
Interrupt Handling ........................................................ 161
Simple Data Logger Example ............................................... 163
Modification of Variables and Arrays ......................................... 166
Algorithm Modification.................................................... 168
Driver Download......................................................... 170
Firmware-Update Download ................................................ 171
Chapter 6. VT1419A Command Reference ......................................... 173
ABORt ................................................................ 185
ALGorithm ............................................................. 186
ALGorithm[:EXPLicit]:ARRay ........................................... 187
ALGorithm[:EXPLicit]:ARRay? .......................................... 188
ALGorithm[:EXPLicit]:DEFine ........................................... 188
ALGorithm[:EXPLicit]:SCALar ..........................................192
ALGorithm[:EXPLicit]:SCALar? ......................................... 193
ALGorithm[:EXPLicit]:SCAN:RATio ...................................... 193
ALGorithm[:EXPLicit]:SCAN:RATio? ..................................... 194
ALGorithm[:EXPLicit]:SIZe? ............................................ 194
ALGorithm[:EXPLicit][:STATe] .......................................... 195
ALGorithm[:EXPLicit][:STATe]? ......................................... 196
ALGorithm[:EXPLicit]:TIME? ........................................... 196
ALGorithm:FUNCtion:DEFine ........................................... 197
ALGorithm:OUTPut:DELay .............................................198
ALGorithm:OUTPut:DELay? ............................................ 199
ALGorithm:UPDate[:IMMediate] ......................................... 199
ALGorithm:UPDate:CHANnel ............................................200
ALGorithm:UPDate:WINDow ............................................ 202
ALGOrithm:UPDate:WINDow? .......................................... 203
ARM.................................................................. 204
ARM[:IMMediate] ..................................................... 205
ARM:SOURce ........................................................ 205
ARM:SOURce? ........................................................ 206
CALibration ............................................................ 207
CALibration:CONFigure:RESistance ...................................... 208
CALibration:CONFigure:VOLTage ........................................ 209
CALibration:SETup..................................................... 210
CALibration:SETup?....................................................210
CALibration:STORe .................................................... 211
CALibration:TARE .................................................... 212
CALibration:TARE:RESet ............................................... 214
CALibration:TARE? .................................................... 214
CALibration:VALue:RESistance ......................................... 214
CALibration:VALue:VOLTage ........................................... 215
CALibration:ZERO? .................................................... 216
DIAGnostic ............................................................. 218
DIAGnostic:CALibration:SETup[:MODE]................................... 219
DIAGnostic:CALibration:SETup[:MODE]?..................................219
DIAGnostic:CALibration:TARE[:OTDetect]:MODE ..........................220
DIAGnostic:CALibration:TARE[:OTDetect]:MODE?.......................... 220
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DIAGnostic:CHECksum? ................................................ 221
DIAGnostic:CUSTom:LINear............................................. 221
DIAGnostic:CUSTom:PIECewise.......................................... 222
DIAGnostic:CUSTom:REFerence:TEMPerature ..............................222
DIAGnostic:IEEE ...................................................... 223
DIAGnostic:IEEE? ..................................................... 223
DIAGnostic:INTerrupt[:LINe] ............................................ 223
DIAGnostic:INTerrupt[:LINe]? ........................................... 224
DIAGnostic:OTDetect[:STATe] ...........................................224
DIAGnostic:OTDetect[:STATe]? .......................................... 225
DIAGnostic:QUERy:SCPREAD? ..........................................225
DIAGnostic:VERSion? .................................................. 226
FETCh? ................................................................ 227
FORMat................................................................ 229
FORMat[:DATA] ...................................................... 229
FORMat[:DATA]? ..................................................... 230
INITiate ................................................................ 232
INITiate[:IMMediate] ................................................... 232
INPut ................................................................. 233
INPut:DEBounce:TIME ................................................. 233
INPut:FILTer[:LPASs]:FREQuency ........................................ 234
INPut:FILTer[:LPASs]:FREQuency? .......................................235
INPut:FILTer[:LPASs][:STATe] .......................................... 236
INPut:FILTer[:LPASs][:STATe]?.......................................... 236
INPut:GAIN .......................................................... 237
INPut:GAIN? ......................................................... 237
INPut:LOW ........................................................... 238
INPut:LOW? .......................................................... 238
INPut:POLarity ........................................................ 239
INPut:POLarity? ....................................................... 239
INPut:THReshold:LEVel?................................................ 239
MEMory ............................................................... 241
MEMory:VME:ADDRess ................................................ 242
MEMory:VME:ADDRess? ...............................................242
MEMory:VME:SIZE....................................................242
MEMory:VME:SIZE? ................................................... 243
MEMory:VME:STATe .................................................. 243
MEMory:VME:STATe? ................................................. 244
OUTPut ................................................................ 245
OUTPut:CURRent:AMPLitude............................................ 245
OUTPut:CURRent:AMPLitude? ........................................... 246
OUTPut:CURRent[:STATe] ..............................................247
OUTPut:CURRent[:STATe]? ............................................. 247
OUTPut:POLarity ...................................................... 248
OUTPut:POLarity? ..................................................... 248
OUTPut:SHUNt ....................................................... 248
OUTPut:SHUNt? ...................................................... 249
OUTPut:TTLTrg:SOURce ............................................... 249
OUTPut:TTLTrg:SOURce? .............................................. 250
OUTPut:TTLTrg<n>[:STATe] ............................................ 250
OUTPut:TTLTrg<n>[:STATe]?
........................................... 251
OUTPut:TYPE......................................................... 251
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OUTPut:TYPE?........................................................252
OUTPut:VOLTage:AMPLitude ........................................... 252
OUTPut:VOLTage:AMPLitude? .......................................... 252
ROUTe ................................................................ 254
ROUTe:SEQuence:DEFine? ............................................. 254
ROUTe:SEQuence:POINts? .............................................. 255
SAMPle ................................................................ 256
SAMPle:TIMer ........................................................ 256
SAMPle:TIMer? ....................................................... 256
[SENSe]................................................................ 258
[SENSe:]CHANnel:SETTling.............................................259
[SENSe:]CHANnel:SETTling? ............................................ 260
[SENSe:]DATA:CVTable? .............................................. 260
[SENSe:]DATA:CVTable:RESet .......................................... 261
[SENSe:]DATA:FIFO[:ALL]? ............................................ 261
[SENSe:]DATA:FIFO:COUNt? ........................................... 262
[SENSe:]DATA:FIFO:COUNt:HALF? .....................................263
[SENSe:]DATA:FIFO:HALF? ............................................ 263
[SENSe:]DATA:FIFO:MODE ............................................ 264
[SENSe:]DATA:FIFO:MODE? ........................................... 264
[SENSe:]DATA:FIFO:PART? ............................................ 265
[SENSe:]DATA:FIFO:RESet ............................................. 265
[SENSe:]FREQuency:APERture........................................... 266
[SENSe:]FREQuency:APERture? .......................................... 267
[SENSe:]FUNCtion:CONDition ...........................................267
[SENSe:]FUNCtion:CUSTom............................................. 268
[SENSe:]FUNCtion:CUSTom:REFerence ................................... 269
[SENSe:]FUNCtion:CUSTom:TCouple ..................................... 270
[SENSe:]FUNCtion:FREQuency .......................................... 271
[SENSe:]FUNCtion:RESistance ........................................... 271
[SENSe:]FUNCtion:STRain:FBENding .....................................272
[SENSe:]FUNCtion:TEMPerature ......................................... 274
[SENSe:]FUNCtion:TOTalize............................................. 275
[SENSe:]FUNCtion:VOLTage[:DC] ....................................... 276
[SENSe:]REFerence .................................................... 277
[SENSe:]REFerence:CHANnels .......................................... 278
[SENSe:]REFerence:TEMPerature ........................................ 279
[SENSe:]STRain:EXCitation.............................................. 279
[SENSe:]STRain:EXCitation?............................................. 280
[SENSe:]STRain:GFACtor ............................................... 280
[SENSe:]STRain:GFACtor? .............................................. 280
[SENSe:]STRain:POISson ............................................... 281
[SENSe:]STRain:POISson?............................................... 281
[SENSe:]STRain:UNSTrained ............................................ 282
[SENSe:]STRain:UNSTrained? ........................................... 282
[SENSe:]TOTalize:RESet:MODE.......................................... 283
[SENSe:]TOTalize:RESet:MODE?......................................... 284
SOURce................................................................ 285
SOURce:FM[:STATe]................................................... 285
SOURce:FM:STATe? ................................................... 286
SOURce:FUNCtion[:SHAPe]:CONDition
...................................286
SOURce:FUNCtion[:SHAPe]:PULSe....................................... 287
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SOURce:FUNCtion[:SHAPe]:SQUare ......................................287
SOURce:PULM[:STATe] ................................................287
SOURce:PULM:STATe? ................................................ 288
SOURce:PULSe:PERiod.................................................288
SOURce:PULSe:PERiod? ................................................ 289
SOURce:PULSe:WIDTh................................................. 289
SOURce:PULSe:WIDTh? ................................................ 289
STATus ................................................................ 291
STATus:OPERation:CONDition?..........................................293
STATus:OPERation:ENABle ............................................. 294
STATus:OPERation:ENABle? ............................................ 294
STATus:OPERation[:EVENt]? ............................................ 295
STATus:OPERation:NTRansition.......................................... 295
STATus:OPERation:NTRansition? .........................................296
STATus:OPERation:PTRansition ..........................................296
STATus:OPERation:PTRansition? ......................................... 297
STATus:PRESet ....................................................... 297
STATus:QUEStionable:CONDition? ....................................... 298
STATus:QUEStionable:ENABle .......................................... 299
STATus:QUEStionable:ENABle?.......................................... 299
STATus:QUEStionable[:EVENt]? ......................................... 299
STATus:QUEStionable:NTRansition ....................................... 300
STATus:QUEStionable:NTRansition? ...................................... 301
STATus:QUEStionable:PTRansition ....................................... 301
STATus:QUEStionable:PTRansition? ...................................... 302
SYSTem ............................................................... 303
SYSTem:CTYPe? ...................................................... 303
SYSTem:ERRor? ...................................................... 304
SYSTem:VERSion? .................................................... 304
TRIGger ............................................................... 305
TRIGger:COUNt ...................................................... 307
TRIGger:COUNt? ..................................................... 307
TRIGger[:IMMediate] .................................................. 308
TRIGger:SOURce ...................................................... 308
TRIGger:SOURce? .................................................... 309
TRIGger:TIMer[:PERiod] ............................................... 309
TRIGger:TIMer[:PERiod]? .............................................. 310
Common Command Reference ............................................. 311
*CAL? .............................................................. 311
*CLS ................................................................ 312
*DMC <name>,<cmd_data>.............................................312
*EMC ............................................................... 312
*EMC?............................................................... 312
*ESE <mask>......................................................... 312
*ESE? ............................................................... 313
*ESR? ............................................................... 313
*GMC? <name> ....................................................... 313
*IDN? ............................................................... 313
*LMC?............................................................... 313
*OPC ................................................................ 314
*OPC? ............................................................... 314
*PMC................................................................ 315
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*RMC <name> ........................................................ 315
*RST ................................................................ 315
*SRE <mask>.........................................................316
*SRE? ............................................................... 316
*STB? ............................................................... 316
*TRG ................................................................ 316
*TST? ............................................................... 317
*WAI ................................................................ 320
Command Quick Reference ................................................ 321
Appendix A. Specifications ...................................................... 329
Appendix B. Error Messages .................................................... 359
Appendix C. Glossary .......................................................... 367
Appendix D. Wiring and Noise Reduction Methods .................................. 371
Separating Digital and Analog SCP Signals .................................... 371
Recommended Wiring and Noise Reduction Techniques ..........................372
Wiring Checklist ....................................................... 372
VT1419A Guard Connections ............................................. 373
Common Mode Voltage Limits ............................................ 373
When to Make Shield Connections .........................................373
Noise Due to Inadequate Card Grounding ..................................... 373
VT1419A Noise Rejection ................................................. 374
Normal Mode Noise (Enm) ...............................................374
Common Mode Noise (Ecm)..............................................374
Keeping Common Mode Noise out of the Amplifier ...........................374
Reducing Common Mode Rejection Using Tri-Filar Transformers ................375
Appendix E. Generating User Defined Functions .................................... 377
Introduction ............................................................. 377
Haversine Example ....................................................... 378
Limitations.............................................................. 380
Index ........................................................................ 381
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Support Resources
Support resources for this product are available on the Internet and at VXI Technology
customer support centers.
VXI Technology
World Headquarters
VXI Technology, Inc.
2031 Main Street
Irvine, CA 92614-6509
Phone: (949) 955-1894
Fax: (949) 955-3041
VXI Technology
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VXI Technology, Inc.
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Phone: (216) 447-8950
Fax: (216) 447-8951
VXI Technology
Lake Stevens Instrument Division
VXI Technology, Inc.
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Phone: (425) 212-2285
Fax: (425) 212-2289
Technical Support
Phone: (949) 955-1894
Fax: (949) 955-3041
E-mail: support@vxitech.com
Visit http://www.vxitech.com for worldwide support sites and service plan information.
Support 13
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14 Contents
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About This Chapter
This chapter will explain hardware configuration before installation in a VXIbus
mainframe. By attending to each of these configuration items, the VT1419A won’t
have to be removed from its mainframe later. Chapter contents include:
Configuring the VT1419A ............................page 15
·
Instrument Drivers .................................. page 23
·
About Example Programs .............................page 23
·
Verifying a Successful Configuration ....................page 23
·
Configuring the VT1419A
There are several aspects to configuring the module before installing it in a VXIbus
mainframe. They are:
Setting the Logical Address Switch .....................page 15
·
Installing Signal Conditioning Plug-ons ..................page 16
·
Disabling the Input Protect Feature ..................... page 21
·
Disabling Flash Memory Access .......................page 21
·
Chapter 1
Getting Started
NOTE Setting the VXIbus Interrupt Level: the VT1419A uses a default VXIbus interrupt
Setting the Logical
Address Switch
For most applications, only the Logical Address switch need be changed and the
SCPs installed in the mainframe prior to installation. The other settings can be
used as delivered.
Switch/Jumper Setting
Logical Address Switch
Input Protect Jumper
Flash Memory Protect Jumper
level of 1. The default setting is in effect at power-on and after a *RST command.
The interrupt level can be changed by executing the DIAGnostic:INTerrupt[:LINe]
command in the application program.
Follow the next figure and ignore any switch numbering printed on the Logical
Address switch. When installing more than one VT1419A in a single VXIbus
Mainframe, set each instrument to a different Logical Address.
208
Protected
PROG
Chapter 1 15
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Getting Started
Configuring the VT1419A
Installing SCPs The following illustrations show the steps used to install Signal Conditioning
Plug-Ons (SCPs). The VT1419A supports only non-programmable analog input
SCPs in positions 0 through 3. Any mix of SCP types can be installed in SCP
positions 4 through 7.
CAUTION Use approved Static Discharge Safe handling procedures anytime the covers are
removed from the VT1419A or are handling SCPs.
Setting Logical Address Switch – VT1419A
Default Switch Setting
LOGICAL ADDRESS = 208
16 Chapter 1
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Note The only SCPs supported in SCP positions 0 through 3 are:
VT1501A VT1513A
VT1502A VT1514A
VT1508A VT1515A
VT1509A VT1516A
VT1512A VT1517A
1 InstallingSCPs: Removing theCover – VT1419A
Getting Started
Configuring the VT1419A
SCP
Remove the SCP
Retainer Screws
Chapter 1 17
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1
2
Remove 2 Screws;
Pull Cover Out
of the 3 slots
Getting Started
Configuring the VT1419A
2 Installing SCPs – VT1419A
SCP
Align the SCP
Connectors with the
Module Connectors
and then Push In
SCP
1
2
Tighten the
SCP Retainer
Screws
18 Chapter 1
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3 Installing SCPs: Reinstalling the Cover – VT1419A
SCP
Getting Started
Configuring the VT1419A
1
Line up the three tabs
with the three slots;
then push the cover
onto the module
2
Tighten two
screws
Chapter 1 19
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Getting Started
Configuring the VT1419A
4 Installing SCPs: Labeling – VT1419A
1
Peel off label from
card and stick on
the appropriate
place on the cover
Terminal Module
(Connect to A/D
Module Later)
Terminal
Module
2
Peel off label from
card and stick on
the terminal module
to be connected
to the A/D Module
SCP
SCP
SCP
SCP
SCP
SCP
Stick-on labels
furnished with the SCP
(P/N: 43-0133-xxx)
SCP
SCP
20 Chapter 1
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Getting Started
Configuring the VT1419A
Disabling the Input
Protect Feature
(Optional)
Disabling the Input Protect feature voids the VT1419A’s warranty. The Input
Protect feature allows the VT1419A to open all channel input relays if any input’s
voltage exceeds ±19 volts (±6 volts for non-isolated digital I/O SCPs). This feature
helps to protect the card’s Signal Conditioning Plug-Ons, input multiplexer, ranging
amplifier and A/D from destructive voltage levels. The level that trips the protection
function has been set to provide a high probability of protection. The voltage level
that is certain to cause damage is somewhat higher. If, in an application, the
importance of completing a measurement run outweighs the added risk of
damage to the VT1419A, the input protect feature may be disabled.
VOIDS WARRANTY Disabling the Input Protection Feature voids the VT1419A’s warranty.
To disable the Input Protection feature, locate and cut JM2202. Make a single cut in
the jumper and bend the adjacent ends apart. See following illustration for location
of JM2202.
Disabling Flash
Memory Access
(Optional)
The Flash Memory Protect Jumper (JM2201) is shipped in the “PROG” position. It
is recommended that the jumper be left in this position so that all of the calibration
commands can function. Changing the jumper to the protect position prevents the
following from being executed:
The SCPI calibration command CAL:STORE ADC | TARE
·
·
The register-based calibration commands STORECAL and STORETAR
·
Any application that installs firmware-updates or makes any other
modification to flash memory through the A24 window.
With the jumper in the “PROG” position, one or more VT1419As can be
completely calibrated without being removed from the application system. A
VT1419A calibrated in its working environment will, in general, be better
calibrated than if it were calibrated separate from its application system.
The multimeter used during the periodic calibration cycle should be considered the
calibration transfer standard. Provide the Calibration Organization control
unauthorized access to its calibration constants. See the VT1415A/VT1419A Service
Manual for complete information on VT1419A periodic calibration.
If access to the VT1419A’s calibration constants must be limited, place JM2201 in
the protected position and cover the shield retaining screws with calibration
stickers. See following illustration for location of JM2201.
Chapter 1 21
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Getting Started
Configuring the VT1419A
Flash Memory Protect Jumper
Default = PROG
(recommended)
JM2201
JM2202
1 Locate
2 Cut
3 Bend
Input Protect Jumper
Warning: Cutting This Jumper
Will Void Your Warranty
22 Chapter 1
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Instrument Drivers
The Agilent/HP E1405B/E1406A downloadable driver is supplied with the
VT1419A on the “VXIplug&play Drivers & Product Manuals” CD-ROM and is
also available through a VXI Customer and Sales Representative.
About Example Programs
Examples on CD All example programs mentioned by file name in this manual are available on the
“VXIplug&play Drivers & Product Manuals” CD supplied with the VT1419A. See the
VEE program examples chapter, page 143 for specific location of files on the CD.
Getting Started
Instrument Drivers
Example Command
Sequences
Where programming concepts are discussed in this manual, the commands to send
to the VT1419A are shown in the form of command sequences. These are not
example programs because they are not written in any computer language. They are
meant to show the VT1419A SCPI commands in the sequence they should be sent.
Where necessary, these sequences include comments to describe program flow and
control such as loop - end loop and if - end if. See the code sequence on page 84 for
an example.
Verifying a Successful Configuration
Among the VEE example programs supplied with the VT1419A is a program (file
name “panl1419.vee”) that can be used to verify the VT1419A configuration and
installation. When the “Front Panel” program starts, it communicates with the
VT1419A and executes instructions to determine and display the installed SCP
types. It also simulates a strip chart recorder so that input channels can be selected
to monitor and display. “Buttons” are included that will run the VT1419A’s
self-test as well as well as perform an “auto-calibration.” Self-test and Cal can take
3 to 15 minutes to complete depending upon the number and type of SCPs installed
in the VT1419A.
Note When the Agilent VEE program that communicates with the VT1419A is first
loaded, it will display a dialog box asking for the GPIB address string to use.
Chapter 1 23
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24 Chapter 1
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About This Chapter
This chapter shows how to plan and connect field wiring to the VT1419A’s
Terminal Module. The chapter explains proper connection of analog signals to the
VT1419A, both two-wire voltage type and four-wire resistance type measurements.
Connections for other measurement types (e.g., strain using the Bridge Completion
SCPs) refer to specific SCP manual in the “SCP Manuals” section. Chapter contents
include:
Chapter 2
Field Wiring
Planning Wiring Layout for the VT1419A ................page 25
·
Faceplate Connector Pin-Signal List .....................page 29
·
Optional Terminal Modules ............................page 30
·
Reference Temperature Sensing with the VT1419A .........page 33
·
Configuring the On-Board/Remote Reference Jumpers ......page 34
·
Preferred Measurement Connections .....................page 37
·
Wiring and Attaching the Terminal Modules ..............page 39
·
Attaching/Removing the Terminal Modules ...............page 41
·
Adding Components to the Option 12 Terminal Module .....page 43
·
Option 11 Terminal Module Wiring Map .................page 44
·
Option 12 Terminal Module Wiring Map .................page 45
·
The Option A3F .................................... page 46
·
Planning the Wiring Layout
To help plan the field wiring connections to the VT1419A, this section provides a
high-level overview of the VT1419A’s signal paths between the face plate
connectors and the Control Processor (DSP). To eliminate any surprises after the
system is wired, it also cover any configuration interdependencies or other limiting
situations (there are very few with the VT1419A).
SCP Positions and
Channel Numbers
SCP Types and
Signal Paths
The VT1419A has a fixed relationship between Signal Conditioning Plug-On
positions and their channel assignments. See Figure 2-1 for this discussion. Each of
the eight SCP positions can connect to eight channels. Each channel signal path
consists of both a High and Low signal path (for differential analog signals). Some
SCP models will connect to fewer of these eight channels and those left
unconnected cannot be used for other purposes. The VT1533A Digital I/O SCP on
the other hand will use each High and Low channel to provide 16 digital bits from a
single SCP position.
Different SCP types (analog sense, analog source, digital I/O) use different signal
paths in the VT1419A. Each of these basic types will be discussed.
Chapter 2 25
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Field Wiring
g
Planning the Wiring Layout
Ch 00
SCP
0
Ch 07
Non-Programmable
Sense SCPs Only
Note
Each channel line
represents both a
Hi and Lo Signal
A/D System
Control
Processor
(DSP)
Any Sense or
Source SCP
SCP
Bus
Ch 08
SCP
1
Ch 15
Ch 16
SCP
2
Ch 23
Ch 24
SCP
3
Ch 31
Ch 32
SCP
4
Ch 39
Ch 40
SCP
5
Ch 47
Ch 48
SCP
6
Ch 55
Ch 56
SCP
6
Ch 63
SCP control and di
Analog Sense SCPs Analog sense SCPs connect signals at the faceplate connector and pass these signals
26 Chapter 2
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ital data
Figure 2-1: Channel Numbers at SCP Positions
(most with signal amplification and/or filtering) to the analog multiplexer and thus
to the A/D for measurement. Here the primary signal path is along the analog Hi
and Lo lines. The SCP Bus carries digital signals to control the programmable
parameters on the VT1503A and VT1510A.
Field Wiring
Planning the Wiring Layout
Analog Source SCPs The primary signal path for analog source SCPs like the VT1505A Resistance
Current Source, the VT1531A Voltage DAC and the VT1532A Current DAC is
along the Hi and Lo lines from the SCP to the face plate connectors. The path from
the SCP to the analog multiplexer can be used to read and verify the approximate
output (although this path is not calibrated). The SCP Bus carries digital signals to
these SCPs to control their output levels.
Combined Analog
Source and
Sense SCPs
Digital SCPs With digital SCPs, the signal path to and from the face plate connectors and the
Pairing Sense and
Source SCPs for
Resistance
Measurements
The VT1506A, VT1507A, and VT1511A Strain Completion SCPs as well as the
VT1518A Resistance Measurement SCP combine analog sense and analog sources
in a single SCP. With these SCPs, some channels will be used to sense
measurement values while others will be used to carry analog excitation voltage or
current. Again the SCP Bus carries digital signals to control SCP source level
and/or measurement configuration.
SCP is as always, the Hi and Lo signal paths. The VT1534A, VT1536A, and
VT1538A digital SCPs provide one digital bit per Hi and Lo pair while the
VT1533A provides 16 digital bits from a single SCP position by connecting 8 bits
to the channel Hi lines and another 8 bits to the channel Lo lines. With digital
SCPs, the SCP Bus is the only data path between the Control Processor and the
SCP for both data and configuration control.
Resistance measurements and resistance-temperature measurements require
supplying an excitation current to the resistive element to be measured. With the
VT1419A, two channels are required for each resistance to be measured. Resistance
is always measured in a Four-Wire configuration. The VT1505A Current Source
SCP provides eight excitation supplies that can be paired with any available analog
sense channels to complete the measurement circuit. The VT1518A Resistance
Measurement SCP provides four excitation supplies and four amplified sense
channels on a single SCP. In either case, the source and sense channels must be
paired together to make the resistance measurement. Figure 2-2 illustrates an
example of “pairing” source SCP channels with sense SCP channels.
Chapter 2 27
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Field Wiring
e
odule
Planning the Wiring Layout
sense Hi
Note
Each channel line
represents both a
Hi and Lo signal
Planning for
Thermocouple
Measurements
sense Lo
Or a Single
VT1518A
For 4 Channels
Ch 24
Sense
SCP
Ch 31
Ch 32
VT1505A
SCP
(source)
Ch 39
Faceplate Conns
or
rminalM
T
Figure 2-2: Pairing Source and Sense SCP Channels
Thermocouples and the thermocouple reference temperature sensor can be wired to
any of the VT1419A’s channels. When the scan list is executed, make sure that the
reference temperature sensor is specified in the channel sequence before any of the
associated thermocouple channels (see the [SENSe:]REF:CHAN command).
External wiring and connections to the VT1419A are made using the Terminal
Module (see page 39).
NOTE The isothermal reference temperature measurement made by a VT1419A applies
only to thermocouple measurements made by that instrument and through the
terminal blocks associated with the reference temperature sensor (for increased
isothermal reference accuracy the VT1586A Rack Mount Terminal Panel has three
reference temperature thermistors). In systems with multiple VT1419As, each
instrument must make its own reference measurements. The reference measurement
made by one VT1419A can not be used to compensate thermocouple measurements
made by another VT1419A.
28 Chapter 2
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Faceplate Connector Pin-Signal Lists
Figure 2-3 shows the Faceplate Connector Pin Signal List for the VT1419A.
Field Wiring
Faceplate Connector Pin-Signal Lists
faceplate connectors
are male 96 pin DIN
Figure 2-3: VT1419A Faceplate Connector Pin Signals
VT1419A
bus
Chapter 2 29
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