VXI Technology Multifunction Plus VT1419A User manual

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VT1419A
MultifunctionPlus
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.
bus
P/N: 82-0075-000
Printed: August 15, 2005
Printed in U.S.A.
Copyright © VXI Technology, Inc., 2005
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Certification
VXI Technology, Inc., certifies that this product met its published specifications at the time of shipment from the 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 Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes a part of)
other VXI Technology products. During the warranty period, VXI Technology, 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 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 when properly installed on that product. VXI Technology 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. VXI Technology does not 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 HEREIN ARE BUYER’S SOLE 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 of this 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 licensed as “commercial computer software” as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May
1991) or DFARS 252.227-7014 (Jun 1995), as a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as
defined in FAR 52.227-19 (Jun 1987)(or any equivalent agency regulation or contract clause), whichever is applicable. You have only
those rights provided for such Software and Documentation by the applicable FAR or DFARS clause or the VXI Technology standard
software agreement for the product involved.
2
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3
Frame or chassis ground
terminal—typically connects to the
equipment’s metal frame.
Alternating current (ac).
Direct current (dc).
Indicates hazardous voltages.
Calls attention to a procedure, practice or
condition that could cause bodily injury or
death.
Calls attention to a procedure, practice, or
condition that could possibly cause damage to
equipment or permanent loss of data.
Indicates the field wiring terminal that must
be connected to earth ground before
operating the equipment—protects against
electrical shock in case of fault.
Instruction manual symbol affixed to
product. Indicates that the user must refer
to the manual for specific WARNING or
CAUTION information to avoid personal
injury or damage to the product.
or
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 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 a VXI Technology Sales and Service
Office for service and repair to ensure that safety features are maintained.
WARNING
CAUTION
Safety Symbols
Note for European Customers
If this symbol appears on your product, it indicates that it was manufactured after August 13, 2005. This mark is placed 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. Fees for recycling will apply if 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 MultifunctionPlus.................................47
About This Chapter ........................................................ 47
Overview of the VT1419A MultifunctionPlus ....................................48
MultifunctionPlus?........................................................ 48
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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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 ..................................................... 108
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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
12 Contents
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Support Resources
Support resources for this product are available on the Internet and at VXI Technology
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Support 13
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14 Contents
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Chapter 1
Getting Started
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
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 208
Input Protect Jumper Protected
Flash Memory Protect Jumper PROG
NOTE Setting the VXIbus Interrupt Level: the VT1419A uses a default VXIbus interrupt
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.
Setting the Logical
Address Switch
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.
Chapter 1 15
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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.
Getting Started
Configuring the VT1419A
16 Chapter 1
Setting Logical Address Switch – VT1419A
Default Switch Setting
LOGICAL ADDRESS = 208
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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
Getting Started
Configuring the VT1419A
Chapter 1 17
1 Installing
SC
Ps: Removing the
C
over – VT1419A
SCP
Remove the SCP
Retainer Screws
Remove 2 Screws;
Pull Cover Out
of the 3 slots
1
2
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Getting Started
Configuring the VT1419A
18 Chapter 1
2 Installing SCPs – VT1419A
Align the SCP
Connectors with the
Module Connectors
and then Push In
1
2
Tighten the
SCP Retainer
Screws
SCP
SCP
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Getting Started
Configuring the VT1419A
Chapter 1 19
3 Installing SCPs: Reinstalling the Cover – VT1419A
Line up the three tabs
with the three slots;
then push the cover
onto the module
Tighten two
screws
2
SCP
1
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