Tektronix VX4237 User manual

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User Manual
VX4237
Digital Multimeter Module
070-9075-02
This document supports firmware version 1.00
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to the Safety Summary prior to
performing service.
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Copyright Tektronix, Inc. 1994. All rights reserved. Licensed software products are owned by Tektronix or its suppliers
and are protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the
Rights in Technical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the
Commercial Computer Software – Restricted Rights clause at FAR 52.227-19, as applicable.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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WARRANTY
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years
from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either
will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the
defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time or
difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX
AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
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VX4237 Digital Multimeter Module User Manual
Contacting Tektronix
Product
Support For application-oriented questions about a Tektronix measure- ment product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time
Or contact us by e-mail:
[email protected]
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Service
Support Contact your local Tektronix distributor or sales office. Or visit our web site for a listing of worldwide service locations.
http://www.tek.com
For other
information In North America: 1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
To write us Tektronix, Inc.
P.O. Box 1000
Wilsonville, OR 97070-1000
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VX4237 Digital Multimeter Module User Manual
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VX4237 Digital Multimeter Module User Manual i
Table of Contents
General Safety Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Publications vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls And Indicators 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Checklist 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics
Functional Overview 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Status 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-on 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument I/O – VXIbus Basics 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Level Interface 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Combinations 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Syntax and Commands
Command Syntax 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Command Groups 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Native Language Commands 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE-488.2 Common Commands 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Native Language Commands 3–69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE 488.2 Common Commands 3–97. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status and Events
Message Exchange 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Retrieval of Device Status Information 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard-Defined Features 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4237 Status Reporting – Detail 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Additional Status Reporting 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Error Codes and Messages 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device-Dependent Error Messages 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
ii VX4237 Digital Multimeter Module User Manual
Appendices
Appendix A: Specifications A–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B: Rear-Panel Connections B–1. . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C: *RST Condition C–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D: Performance Verification D–1. . . . . . . . . . . . . . . . . . . . . . . . .
User Uncertainty Calculations D–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Verification Work Sheets D–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation D–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Voltage Check D–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Voltage Check D–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Linearity Check D–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resistance Check D–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix E: User Service E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
User-Replaceable Parts E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedure E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary
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VX4237 Digital Multimeter Module User Manual iii
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
Connect and Disconnect Properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product. This product is indirectly grounded through the grounding
conductor of the mainframe power cord. To avoid electric shock, the grounding
conductor must be connected to earth ground. Before making connections to the
input or output terminals of the product, ensure that the product is properly
grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/DampConditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
Terms in this Manual. These terms may appear in this manual:
To Avoid Fire or
Personal Injury
Symbols and Terms
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General Safety Summary
iv VX4237 Digital Multimeter Module User Manual
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
ProtectiveGround
(Earth)Terminal CAUTION Refer to Manual Double Insulated
WARNING
High Voltage
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VX4237 Digital Multimeter Module User Manual v
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, disconnect the mains power by means
of the power cord or, if provided, the power switch.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
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Service Safety Summary
vi VX4237 Digital Multimeter Module User Manual
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VX4237 Digital Multimeter Module User Manual vii
Preface
This is the user manual for the VX4237 Digital Multimeter Module.
Please read and follow all instructions for installation and configuration. Use the
Installation Checklist to insure proper installation, and as a record of initial
settings.
This manual assumes you are familiar with VXIbus instruments and operation,
and with the purpose and function of this instrument. The Operating Basics
section gives a summary of VXIbus operation, and presents an overview of this
instrument’s operation.
The Syntax and Commands section has a summary of all the commands, and
detailed descriptions of each command.
Conventions
The names of all switches, controls, and indicators appear in this manual exactly
as they appear on the instrument.
Specific conventions for programming are given in the section Syntax and
Commands.
This manual uses the following notational conventions:
HAn asterisk (*) following a signal mnemonic denotes that the signal is active
when in the low state (typically, 0 V).
HA signal mnemonic without a following asterisk (*) denotes that the signal is
active when in the high state (typically, 2.8 – 5 V).
Regarding the base of a number:
HUnless otherwise noted, all numbers are assumed to be decimal (base 10).
Related Publications
The following documents on related subjects may be useful in making efficient
use of the module:
VXIbus System Specification, Version 1.4
ANSI/IEEE Std. 1014–1987, IEEE Standard for a Versatile Backplane Bus: VME
Bus
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Preface
viii VX4237 Digital Multimeter Module User Manual
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Getting Started
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VX4237 Digital Multimeter Module User Manual 1–1
Getting Started
Product Description
The VX4237 Digital Multimeter Module is a printed circuit board assembly for
use in a mainframe conforming to the VXIbus Specification. The VX4237 is a
fully compatible VXIbus C-size Digital Multimeter (DMM) that has the
following measurement capabilities and features:
HFive DC voltage ranges from 200 mV – 300 V with 100 nV resolution
HFive AC voltage ranges from 200 mV – 300 V with 1 V resolution
HSix resistance ranges from 200 – 20 Mwith 100  resolution
HAC and DC current 1000 mA range
HSelectable 4.5 – 6.5 digit resolution
HExternal trigger with delay
HProgrammable external calibration
The VX4237 is a message-based device using A16 addressing.
Built In Test Equipment is provided by extensive self tests that are automatically
invoked on power-up, and may also be invoked on command. Circuitry tested
includes the CPU and all memory, and the DMM circuitry. The front panel LEDs
provide visual BITE for module operation.
Accessories
Standard accessories to the VX4237 are the VX4237 Digital Multimeter User
Manual and Reference Manual.
An optional input lead (for the 15-pin front panel connector) is available from
Tektronix by ordering part number 012-1391-00.
BITE (Built-In Test
Equipment)
Standard
Optional
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Getting Started
1–2 VX4237 Digital Multimeter Module User Manual
LSB MSB
0
1
Front
Panel Logical Address Switch Access
Top Cover
Figure 1–1: VX4237 Controls and Indicators
Controls And Indicators
The following controls and indicators are provided to select and display the
functions of the VX4237 Module’s operating environment. See Figures 1 and 2
for their physical locations.
The Local Address switch must be correctly set to insure proper operation. See
Configuration for details of how to set the switches.
The following LEDs are visible at the top of the VX4237 Module’s front panel to
indicate the status of the module’s operation. See Operating Basics for a
description of each LED’s meaning.
Fail LED
Ready LED
Trig LED
Switches
LEDs
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Getting Started
VX4237 Digital Multimeter Module User Manual 1–3

Figure 1–2: VX4237 Front Panel
Configuration
The Logical Address Switch must be correctly set to insure proper operation.
Refer to Figure 1–1 for the physical location.
Each function module in a VXIbus System must be assigned a unique logical
address, from 1 to 255 decimal. The base VMEbus address of the VX4237 is set
to a value between 1 and 255 by an 8-way DIL switch, accessible through a hole
in the top cover.
Logical Address Switch
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