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USER'S MANUAL
VXI PULSE
GENERATOR
MODULE
MODEL
VX462B
ManualPartNo:11026339C
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COPYRIGHT
C&H Technologies, Inc. (C&H) provides this manual "as is" without warranty of any kind, either
expressed or implied, including but not limited to the implied warranties of merchantability and
fitness for a particular purpose. C&H may make improvements and/or changes in the product(s)
and/or program(s) described in this manual at any time and without notice.
This publication could contain technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated in new editions of
this publication.
Copyright © 1993,1995 by C&H Technologies, Inc.
The information and/or drawings set forth in this document and all rights in and to inventions
disclosed herein which might be granted thereon disclosing or employing the materials, methods,
techniques or apparatus described herein, are the exclusive property of C&H Technologies, Inc.
A Reader's Comment Form is provided at the back of this publication. If this form has been
removed address comments to:
C&H Technologies, Inc.
Technical Publications
P. O. Box 14765
Austin, Texas 78761-4765
C&H may use or distribute any of the information you supply in any way that it believes
appropriate without incurring any obligations whatever.
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VME/VXI MODULE WARRANTY
`
C&H Technologies, Inc. warrants its VME/VXI products to be free from defects in material and
workmanship for one year from date of shipment. C&H will repair or replace the defective
product without charge within the warranty period, provided the defective item is shipped, freight
prepaid, to C&H Technologies, at 15809 Vision Drive, Pflugerville, TX 78660. C&H will pay
return freight charges to any point in the continental United States or Canada.
Obligations under this warranty shall be limited to repair or replacement, at C&H's discretion, of
any product or part thereof which has been returned by the original purchaser with transportation
prepaid and, upon examination by C&H, found to be defective. C&H assumes no responsibility
for loss or damage to equipment being returned for repair or replacement under the terms of this
warranty. Equipment which, upon examination by C&H, requires repair or replacement of parts
thereof as a result of improper installation, misuse, unauthorized alterations or repairs, or user
negligence, will have such repairs or replacement of parts made at then current rates.
This warranty does not cover damage caused by misuse, neglect, accident, or improper
application or installation. C&H shall not be liable for consequential damages of any kind arising
out of the purchase, installation, use or misuse of the product. C&H makes no representation or
warranty of any kind, either expressed or implied, with respect to equipment operation or
procedures. Any action that the user may take in reliance upon the operation or accuracy of this
equipment shall be taken solely at the user's own responsibility and risk.
Please notify the C&H sales department to obtain a Return Authorization Number (RAN) prior to
return of a product under the terms of this warranty. Notification is to include the Model and
Serial numbers of the product along with full details of the problem. Modules returned should
clearly show the RAN on the outside of the package.
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AMENDMENT NOTICE
C&H Technologies, Inc. makes every attempt to provide up-to-date manuals with the associated
equipment. Occasionally, changes are made to the equipment wherein it is necessary to provide
amendments to the manual. If any amendments are provided for this manual they are printed on
colored paper and will be found at the rear of this manual.
NOTE
The contents of any amendment may affect operation, maintenance,
or calibration of the equipment.
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INTRODUCTION
This manual describes the functional operation of the C&H Model VX462B VXI Pulse Generator
(Part No. 11026335). This module is one of a number of test and data acquisition/control
modules in the VME and VXI format provided by C&H.
Contained within this manual is information on the physical and electrical specifications,
installation and startup procedures, operating procedures, functional analysis, and figures and
diagrams required to adequately support this product.
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TABLE OF CONTENTS
1.0 GENERAL DESCRIPTION ............................................................................................. 1
1.1 PURPOSE OF EQUIPMENT................................................................................ 1
1.2 SPECIFICATIONS OF EQUIPMENT.................................................................. 1
1.2.1 Key Specifications................................................................................ 1
1.2.2 Electrical.............................................................................................. 1
1.2.3 Mechanical........................................................................................... 1
1.2.4 Environmental...................................................................................... 2
1.2.5 Bus Compliance ................................................................................... 3
2.0 INSTALLATION ............................................................................................................. 5
2.1 UNPACKING AND INSPECTION ...................................................................... 5
2.2 HANDLING PRECAUTIONS.............................................................................. 5
2.3 INSTALLATION.................................................................................................. 5
2.4 PREPARATION FOR RESHIPMENT.................................................................. 5
3.0 FUNCTIONAL DESCRIPTION....................................................................................... 7
3.1 GENERAL............................................................................................................ 7
3.2 SWITCHES AND JUMPERS ............................................................................... 7
3.3 INDICATORS ...................................................................................................... 8
3.4 CONNECTORS.................................................................................................... 8
3.4.1 Front Panel Connectors........................................................................ 8
3.4.2 Rear Connectors................................................................................... 8
3.5 CONFIGURATION REGISTERS......................................................................... 9
3.5.1 VXI Configuration Registers................................................................ 9
3.5.2 Pulse Configuration Registers............................................................... 11
4.0 OPERATING INSTRUCTIONS....................................................................................... 15
4.1 LOGICAL ADDRESS........................................................................................... 15
4.2 PROGRAMMING SEQUENCE ........................................................................... 16
4.3 NORMAL MODES OF OPERATION.................................................................. 16
4.3.1 Single Pulse Mode................................................................................ 16
4.3.2 Delayed Pulse Mode............................................................................. 16
4.3.3 Double Pulse Mode.............................................................................. 16
4.4 TRIGGERED MODES OF OPERATION............................................................. 17
4.4.1 Free...................................................................................................... 17
4.4.2 Triggered Mode ................................................................................... 17
4.4.3 Gated Mode......................................................................................... 17
4.5 SPECIAL MODES OF OPERATION................................................................... 17
4.6 OUTPUT VOLTAGE LEVEL PROGRAMMING................................................ 18
5.0 TROUBLE ANALYSIS.................................................................................................... 19
5.1 BUILT IN TEST AND DIAGNOSTICS............................................................... 19
5.2 TROUBLE ANALYSIS GUIDE........................................................................... 19
APPENDIX A - BOARD LAYOUT....................................................................................... 1
APPENDIX B - CONNECTORS............................................................................................ 1
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LIST OF FIGURES
Figure 1. Electrical Timing and Output Characteristics ...........................................................2
Figure 2. Simplified Block Diagram........................................................................................7
Figure 3. Hardware Configurable Controls .............................................................................7
Figure 4. Front Panel..............................................................................................................8
Figure 5. VXI Configuration Registers...................................................................................10
Figure 6. PRI Register............................................................................................................11
Figure 7. Delay Register.........................................................................................................12
Figure 8. Pulse Width Register...............................................................................................12
Figure 9. Control Register......................................................................................................13
Figure 10. Low/High Level Reference Registers.....................................................................14
Figure 11. Functional Block Diagram .....................................................................................15
Figure B-1. P1 Pin Configuration ...........................................................................................1
Figure B-2. P2 Pin Configuration ...........................................................................................2
Figure B-3. Front Panel Connector.........................................................................................3
LIST OF TABLES
Table I. VXI Register Address Map .......................................................................................9
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1.0 GENERAL DESCRIPTION
The VX462B is a B-size VXIbus compatible programmable 20 MHz pulse generator with an
additional 40 MHz square wave function. The module can output single or double pulse patterns
that can be continuous streams or externally triggered or gated. The pulse repetition interval and
pulse width are programmable and a delay time may be programmed in the delayed or double
pulse modes. The output amplitude is also programmable.
1.1 PURPOSE OF EQUIPMENT
This module is well suited for applications within automated test equipment and hardware-in-
the-loop simulation systems, as well as development laboratory environments.
1.2 SPECIFICATIONS OF EQUIPMENT
1.2.1 Key Specifications
l
Single and double pulse modes
l
Continuous, triggered, gated, and delayed modes
l
Programmable pulse repetition interval and pulse width
l
Programmable delay time
l
±10Vpp output amplitude with low impedance output, or
±5Vpp output amplitude with 50 Ohm impedance output selected.
l
Read back capability on all registers
1.2.2 Electrical
The module requires the +5V and +12V power from the VXI backplane. The peak module
current (IPM) for the +5 volt supply is 3.0 amps and for the +12 volts it is 0.4 amps. The pulse
timing and output characteristics are shown in Figure 1.
1.2.3 Mechanical
The mechanical dimensions of the module are in conformance with the VXIbus specification Rev
1.4 for single slot size 'B' modules. The nominal dimensions are 233.35 (9.187 in) high x 160 mm
(6.299 in) deep. The module is designed for a mainframe with 20.32 mm (0.8 in) spacing between
slots. As required by the VXI bus specification, these dimensions are in accordance with those
given in the VME bus specification (Rev. C.1).
1
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