VMIC VMIVME-4116 User manual

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12090 South Memorial Parkway
Huntsville, Alabama 35803-3308, USA
[phone] w(800) 322-3616 wFax: [phone]
VMIVME-4116
8-channel 16-bit Digital-to-Analog Converter Board
Product Manual
500-004116-000 Rev. U
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COPYRIGHT AND TRADEMARKS
VMIC
All Rights Reserved
This document shall not be duplicated, nor its contents used for any
purpose, unless granted express written permission from VMIC.
© Copyright 2003. The information in this document has been carefully checked and is believed to be entirely reliable.
While all reasonable efforts to ensure accuracy have been taken in the preparation of this manual, VMIC assumes no
responsibility resulting from omissions or errors in this manual, or from the use of information contained herein.
VMIC reserves the right to make any changes, without notice, to this or any of VMIC’s products to improve reliability,
performance, function, or design.
VMIC does not assume any liability arising out of the application or use of any product or circuit described herein; nor
does VMIC convey any license under its patent rights or the rights of others.
For warranty and repair policies, refer to VMIC’s Standard Conditions of Sale.
AMXbus, BITMODULE, COSMODULE, DMAbus, IOMax, IOWorks Foundation, IOWorks Manager, IOWorks Server,
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trademarks and The I/O Experts, The I/O Systems Experts, The Soft Logic Experts, and The Total Solutions Provider are
service marks of VMIC.
The I/O man figure, IOWorks, IOWorks man figure, UIOC, Visual IOWorks and the VMIC logo are registered
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PICMG and CompactPCI are registered trademarks of PCI Industrial Computer Manufacturers’ Group.
Other registered trademarks are the property of their respective owners.
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5
Table of Contents
List of Figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Physical Description and Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safety Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 16
Warnings, Cautions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 1 - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Immediate DAC Update Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Delayed DAC Update Mode. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Program Control Update Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
External Trigger Update Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
VMIVME-4116 Test Mode Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Using the VMIVME-4116 to Test the Multiplexer Channels of the VMIVME-3200. . . . . . . . . . . 25
VMEbus Interface Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
P2 Connector I/O Signal Definition . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Chapter 2 - Configuration and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Unpacking Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Before Applying Power: Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
DAC Board Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
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Board Address Selection Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Address Modifier Response Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Digital Code Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Program Controlled And External Start Convert Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Connector Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Analog Output Accuracy When Optional Output Isolation Hardware is Used . . . . . . . . . . . . . . . . . . . .39
DAC Zero Offset and Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Chapter 3 - Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
DAC Board Programming Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Immediate DAC Update Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Programming the Control and Status Register for Different Analog
Output Variations - Bit Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Delayed DAC Update Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Test Mode Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .56
MC68000 Assembly Language Programming of the VMIVME-4116 DAC Board . . . . . . . . . . . . . . . .57
Program Example (Delayed DAC Update Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Chapter 4 - Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Maintenance Prints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
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List of Figures
Figure 1 VMIVME-4116 8-channel DAC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 1-1 VMIVME-4116 Board Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 1-2 VMIC High Performance Analog Input/Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 1-3 Optional Analog Output Isolation Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 1-4 Test Bus Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 1-5 VMEbus Interface Logic and Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 27
Figure 1-6 DAC Board Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28
Figure 2-1 Address Selection Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 2-2 Jumper and Switch Locations on the VMIVME-4116 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 2-3 Digital Code Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 36
Figure 2-4 P2 Connector - Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 2-5 P3 Connector - Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 2-6 Calibration Adjustment Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 3-1 DAC Programming Sequence (Immediate DAC Start Convert Mode). . . . . . . . . . . . . . . . . . . . . 59
Figure 3-2 Program Example (Immediate DAC Update Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 3-3 DAC Programming Sequence (Delayed DAC Update Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 3-4 Program Example (Delayed DAC Update Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
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List of Tables
Table 2-1 VMIVME-4116 Factory Preset Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 2-2 P2 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 2-3 P3 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 2-4 VMIVME-4116 Calibration Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 3-1 VMIVME-4116 Control and Status Register (CSR) (Read/Write) Address Map. . . . . . . . . . . . . 47
Table 3-2 VMIVME-4116 DAC Channels (0 to 7) (Write) Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 3-3 DAC Data Format Analog Output versus Digital Input (±10 V Scale). . . . . . . . . . . . . . . . . . . . . . . 51
Table 3-4 Control Register Data Format and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 52
Table 3-5 Analog Output Over TEST BUS 1 (AINTESTBS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 3-6 Analog Output Over TEST BUS 2 (AOTESTBS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 3-7 Analog Output Over TEST BUS 2 and Over P3 Connector to Field-connected Device
(Used for Real-time Fault Detection of DACs) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 3-8 Analog Output Over P3 Connector Only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 3-9 Analog Output Control in Immediate Update Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 3-10 Analog Output Control in the Delayed DAC Update Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
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11
Overview
Introduction
This document will primarily describe the operation of the DAC board, but some
details of the VMIVME-3100 ADC Board and the VMIVME-3200 32-channel
multiplexer (MUX) board will be included for clarity. It is also intended to give the
user a better understanding of the test capabilities of a data acquisition system using
the DAC board in conjunction with the VMIC MUX expander board, (VMIVME-3200)
and the ADC board, (VMIVME-3100). For a thorough understanding the reader
should have access to the following documents:
•VMIVME-3200 32-Channel Analog Input (MUX) Instruction Manual (Document
No. 500-003200-000)
•VMIVME-3100 12-Bit Analog-to-Digital Converter (ADC) Board Instruction Manual
(Document No. 500-003100-000)
Features
Listed below are the primary features of the VMIVME-4116 DAC board:
• 16-Bit resolution
• Buffered voltage output (±10 V @ 5 mA)
• Double-buffered data latches
• Four or eight channels (option dependent)
• Eight 16-Bit DACs (one per channel)
• Front panel Fail LED
• High reliability DIN type output connector
• Multiplexed programmable outputs for testing analog input multiplexer boards
• Multiplexed programmable outputs for testing analog outputs
• Jumper-selectable synchronized update control
• Double Eurocard form factor
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
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• Selectable external update control input provides single update strobe for all
DAC outputs
• Fast settling: 10 µs maximum to ±0.0003 percent of FSR
• Requires VMIVME-3100 ADC for Built-in-Test
A unique feature of the VMIVME-4116 DAC Board is the Built-in-Test logic that
allows the testing of any one of the analog output channels through the use of an
on-board multiplexer and the VMIVME-3100 ADC Board. When in test mode the field
connections through connector P3 may be isolated and any of the eight channels may
be routed to the 8-bit VMIVME-3100 ADC board via VMIC's analog backplane
(AMXbus™). At the VMIVME-3100 ADC, board under program control, the analog
signal may be converted to a 12-bit digital word and compared with the original 16-bit
word written to the DAC board. In this manner each of the eight analog output
channels may be verified without disturbing the field connected devices. However,
the full accuracy of the analog outputs cannot be determined by a 12-bit
VMIVME-3100 ADC. The analog output channels may also be multiplexed to the
analog test bus simultaneously while controlling the P3 connected field devices,
providing real-time fault detection of the outputs. If a board fails the self-test, a Fail
LED on the front panel may be turned ON to indicate the board is in a failed
condition. The complete operation and the requirements for the self-test mode are
explained in detail in “Theory of Operation” on page 19 and “Programming” on page
47 of this manual.
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13
Figure 1 VMIVME-4116 8-channel DAC Board
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
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Functional Description
The VMIVME-4116 internal organization is illustrated in the functional block diagram
shown in Figure Figure 1-1 on page 20.
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References
15
References
For a detailed description and specification of the VMEbus, please refer to:
VMEbus Specification Rev. C. and the VMEbus Handbook
VMEbus International Trade Assoc. (VITA)
7825 East Gelding Dr.
Suite 104
Scottsdale, AZ 85260
[phone]
[phone] (FAX)
www.vita.com
The following application and configuration guides are available from VMIC to assist
the user in the selection, specification and implementation of systems based on
VMIC’s products.
Digital Input Board Application Guide (Document No. 825-000000-000)
Change-of-State Application Guide (Document No. 825-000000-002)
Digital I/O (with Built-in-Test) Product Line Description (Document No. 825-000000-003)
Synchro/Resolver (Built-in-Test) Subsystem Configuration Guide (Document No.
825-000000-004)
Analog I/O Products (with Built-in-Test) Configuration Guide (Document No.
825-000000-005)
Physical Description and Specification
Refer to VMIC’s Specification No. 800-004116-000 for detailed specifications.
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
16
Safety Summary
The following general safety precautions must be observed during all phases of the
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 this product.
VMIC assumes no liability for the customer’s failure to comply with these
requirements.
Ground the System
To minimize shock hazard, the chassis and system cabinet must be connected to an
electrical ground. A three-conductor AC power cable should be used. The power
cable must either be plugged into an approved three-contact electrical outlet or used
with a three-contact to two-contact adapter with the grounding wire (green) firmly
connected to an electrical ground (safety ground) at the power outlet.
Do Not Operate in an Explosive Atmosphere
Do not operate the system in the presence of flammable gases or fumes. Operation of
any electrical system in such an environment constitutes a definite safety hazard.
Keep Away from Live Circuits
Operating personnel must not remove product covers. Component replacement and
internal adjustments must be made by qualified maintenance personnel. Do not
replace components with power cable connected. Under certain conditions,
dangerous voltages may exist even with the power cable removed. To avoid injuries,
always disconnect power and discharge circuits before touching them.
Do Not Service or Adjust Alone
Do not attempt internal service or adjustment unless another person capable of
rendering first aid and resuscitation is present.
Do Not Substitute Parts or Modify System
Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the product. Return the product to
VMIC for service and repair to ensure that safety features are maintained.
Dangerous Procedure Warnings
Warnings, such as the example below, precede only potentially dangerous procedures
throughout this manual. Instructions contained in the warnings must be followed.
WARNING: Dangerous voltages, capable of causing death, are present in this system.
Use extreme caution when handling, testing and adjusting.
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Warnings, Cautions and Notes
17
Warnings, Cautions and Notes
STOP informs the operator that a practice or procedure should not be performed.
Actions could result in injury or death to personnel, or could result in damage to or
destruction of part or all of the system.
WARNING denotes a hazard. It calls attention to a procedure, practice or condition,
which, if not correctly performed or adhered to, could result in injury or death to
personnel.
CAUTION denotes a hazard. It calls attention to an operating procedure, practice or
condition, which, if not correctly performed or adhered to, could result in damage to
or destruction of part or all of the system.
NOTE denotes important information. It calls attention to a procedure, practice or
condition which is essential to highlight.
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VMIVME-4116 8-channel 16-bit Digital-to-Analog Converter Board
18
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19
CHAPTER
Theory of Operation
Introduction
The VMIVME-4116 Digital-to-Analog Converter (DAC) Board performs digital-to-
analog conversion on 16-bit positive true offset binary or two’s complement coded
words, with an analog output range of -10 to +10 V. This provides for a resolution of
305 µV for each digital input of 1 LSB change. The buffered output voltage settles to
within 1/2 LSB in 10 µs.
The DAC offers a Digital-to-Analog Integrated Circuit (IC) per channel. A Control
and Status Register (CSR) is loaded by the processor and this register controls the
functioning of the board. The CSR can be read by the processor at any time. The DAC
board functional block diagram is shown in Figure 1-1 on page 20. Each of the eight
DACs is preceded by double-buffered data latches. The data latches allow versatility
in the way that the DAC analog output may be updated.
There are three methods by which new data can be converted by a DAC. Each method
is enabled/disabled by on-board jumpers and is further controlled by a CSR that
must be loaded by the user (the CSR contents are described in Table 3-4 on page 52
and Table 3-5 on page 53).
1
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