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VMIVME-3111
48 ANALOG-TO-DIGITAL INPUTS
2-CHANNEL DIGITAL-TO-ANALOG OUTPUT BOARD
INSTRUCTION MANUAL
DOCUMENT NO. 500-003111-000 T
Revised June 19, 1995
VME MICROSYSTEMS INTERNATIONAL CORPORATION
12090 SOUTH MEMORIAL PARKWAY
HUNTSVILLE, AL 35803-3308
[phone] FAX NO.: [phone]
1-800-322-3616
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500-003111-000
v
VMIVME-3111
48 ANALOG-TO-DIGITAL INPUTS
2-CHANNEL DIGITAL-TO-ANALOG OUTPUT BOARD
TABLE OF CONTENTS
Page
SECTION 1. GENERAL DESCRIPTION
1.1 INTRODUCTION..................................................................................1-1
1.2 FUNCTIONAL DESCRIPTION.............................................................1-2
1.3 REFERENCE MATERIAL LIST............................................................1-2
SECTION 2. PHYSICAL DESCRIPTION AND SPECIFICATIONS
SECTION 3. THEORY OF OPERATION
3.1 INTRODUCTION..................................................................................3-1
3.2 INTERNAL FUNCTIONAL ORGANIZATION........................................3-1
3.3 VMEbus CONTROL INTERFACE........................................................3-1
3.3.1 Read/Write Operations.........................................................................3-2
3.3.2 Bus Interrupter......................................................................................3-4
3.4 ADC CONTROL AND TIMING.............................................................3-4
3.4.1 Converter Controls and Status Flags ...................................................3-4
3.4.2 Throughput (Sample Rate) Factors......................................................3-7
3.4.3 Interleaved (Pipelined) Operation.........................................................3-7
3.4.4 Programmable Gain Amplifier ..............................................................3-8
3.5 FRONT PANEL (P3) ANALOG INPUTS...............................................3-8
3.5.1 P3 Low Pass Filters and Input Multiplexer............................................3-8
3.5.2 Current Loop Receiving Mode..............................................................3-8
3.6 REAR PANEL (P2) ANALOG INPUTS.................................................3-10
3.7 ANALOG INPUTS SIGNAL ROUTING.................................................3-10
3.7.1 Self-Test Multiplexer.............................................................................3-10
3.7.2 Analog Configuration Network..............................................................3-13
3.8 ANALOG OUTPUTS ............................................................................3-13
3.8.1 DACs....................................................................................................3-13
3.8.2 Output Buffers and Switches................................................................3-13
3.9 BUILT-IN-TEST....................................................................................3-14
3.9.1 Self-Test Multiplexers...........................................................................3-14
3.9.2 Loopback Testing of Inputs and Outputs..............................................3-15
3.9.3 Self-Test Standards..............................................................................3-15
3.9.4 Gain Autocalibration.............................................................................3-15
3.9.5 Zero Autocalibration .............................................................................3-15
3.10 BUILT-IN POWER CONVERTER ........................................................3-15
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500-003111-000
vi
TABLE OF CONTENTS (Continued)
Page
SECTION 4. PROGRAMMING
4.1 INTRODUCTION TO CONTROLLING THE VMIVME-3111 BOARD...4-1
4.2 CONTROL AND STATUS REGISTER DESCRIPTIONS.....................4-2
4.3 INITIALIZATION...................................................................................4-5
4.4 ANALOG INPUT MODES.....................................................................4-5
4.5 ACCESSING THE ANALOG INPUT CHANNELS................................4-6
4.5.1 Gain Selection......................................................................................4-6
4.5.2 Channel Selection ................................................................................4-7
4.5.3 Gain and Channel Selection Precedence.............................................4-8
4.6 CONTROLLING AND READING THE ADC.........................................4-9
4.6.1 ADC Timing..........................................................................................4-9
4.6.2 ADC Controls and Flags.......................................................................4-9
4.6.3 Reading ADC Codes............................................................................4-15
4.6.4 External Trigger Operation...................................................................4-17
4.7 CONTROLLING THE ANALOG OUTPUTS .........................................4-17
4.7.1 Writing to Outputs.................................................................................4-17
4.7.2 Off-Line Operation................................................................................4-18
4.8 SELF-TESTING THE VMIVME-3111 BOARD......................................4-18
4.8.1 Loopback Testing of Inputs and Outputs..............................................4-19
4.8.2 Calibration Self-Testing........................................................................4-22
4.8.3 Performing Autocalibration...................................................................4-25
4.9 BUS INTERRUPT CONTROL..............................................................4-25
4.9.1 Interrupt Control Register.....................................................................4-26
4.9.2 Interrupt Vector Register ......................................................................4-27
4.10 BOARD IDENTIFICATION REGISTER................................................4-28
SECTION 5. CONFIGURATION AND INSTALLATION
5.1 UNPACKING PROCEDURES..............................................................5-1
5.2 PHYSICAL INSTALLATION.................................................................5-1
5.3 BEFORE APPLYING POWER: CHECKLIST......................................5-1
5.4 OPERATIONAL CONFIGURATION.....................................................5-2
5.4.1 Factory-Installed Jumpers....................................................................5-2
5.4.2 Board Address and Address Modifier Selection...................................5-6
5.4.3 Analog Input Voltage Range Selection.................................................5-7
5.4.4 Current Loop Termination Resistors.....................................................5-7
5.4.5 Differential/Single-Ended Input Mode Selection...................................5-7
5.4.6 Analog Output Voltage Range Selection..............................................5-7
5.5 CALIBRATION .....................................................................................5-8
5.5.1 Equipment Required.............................................................................5-8
5.5.2 Internal Reference Voltage Calibration.................................................5-10
5.5.3 Programmable Gain Amplifier (PGA) Calibration .................................5-10
5.5.3.1 Voltage Input Option Calibration...........................................................5-10
5.5.3.2 Current Input Option Calibration...........................................................5-11
5.5.4 Manual ADC Calibration.......................................................................5-12
5.5.5 Analog Outputs Calibration...................................................................5-13
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500-003111-000
vii
5.6 CONNECTOR DESCRIPTIONS ..........................................................5-13
TABLE OF CONTENTS (Continued)
Page
SECTION 6. MAINTENANCE
6.1 MAINTENANCE...................................................................................6-1
6.2 MAINTENANCE PRINTS.....................................................................6-1
LIST OF FIGURES
Figure Page
1.2-1 VMIVME-3111 Functional Block Diagram ............................................1-3
3.3.1-1 VMEbus Control Signals and Interface Logic.......................................3-3
3.3.2-1 Bus Interrupt Logic...............................................................................3-5
3.4-1 ADC Timing Logic and Control Signals ................................................3-6
3.5-1 Analog Inputs and Signal Routing ........................................................3-9
3.6-1 32-Channel Filtered Analog Inputs.......................................................3-11
3.7-1 Self-Test Multiplexer.............................................................................3-12
3.8-1 Analog Output Channels ......................................................................3-14
3.9.4-1 Converter Channel Autocalibration.......................................................3-16
3.10-1 ±15 VDC Board Power.........................................................................3-17
4.6.2-1 Program Flowchart - Basic ADC Control Sequence.............................4-11
4.6.2-2 Program Example - Basic ADC Control Sequence...............................4-12
4.6.2-3 Program Flowchart - Pipelined ADC Control Sequence.......................4-13
4.6.2-4 Program Example - Pipelined ADC Control Sequence.........................4-14
4.8.1-1 Program Flowchart - Loopback Self-Test.............................................4-20
4.8.1-2 Program Example - Loopback Self-Test...............................................4-21
4.8.2-1 Program Flowchart - Converter Autocalibration....................................4-23
4.8.2-2 Program Example - Converter Autocalibration.....................................4-24
5.4-1 Jumper Locations.................................................................................5-3
5.5-1 Test Point and Adjustment Locations...................................................5-9
5.6-1 P2 Connector - Pin Configuration.........................................................5-15
5.6-2 P3 Connector - Pin Configuration.........................................................5-17
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500-003111-000
viii
TABLE OF CONTENTS (Concluded)
LIST OF TABLES
Table Page
4.1-1 Communications Register Map ............................................................4-1
4.2-1 Control Register Functions...................................................................4-2
4.2-2 Status Register Flags...........................................................................4-4
4.4-1 Analog Input Control Modes.................................................................4-6
4.5.2-1 Analog Input Channel Selection...........................................................4-8
4.6.3-1 ADC Format and Coding......................................................................4-16
4.7.1-1 DAC Data Format and Coding..............................................................4-18
4.8.2-1 Calibration Test Limits..........................................................................4-22
4.9-1 Interrupt Registers................................................................................4-26
5.4-1 Programmable Jumper Functions ........................................................5-4
5.4.2-1 Typical Board Address (FF8F00 HEX) Selection .................................5-6
5.4.3-1 Voltage Range Configuration ...............................................................5-7
5.6-1 P2 Connector (Rear Panel Inputs) Signal Assignments.......................5-16
5.6-2 P3 Connector Signal Assignments.......................................................5-18
APPENDIX
A Schematic and Assembly Drawing
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NOTICE
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, DMAbus, MEGAMODULE, NETbus, SRTbus,
TESTCAL, TURBOMODULE, UCLIO, UIOD, VMEmanager, VMEnet, VMEnet II,
WARPNET, and WinUIOC are trademarks of VME Microsystems International
Corporation. The VMIC logo and UIOC are registered trademarks of VME
Microsystems International Corporation. Other registered trademarks are the
property of their respective owners.
VME Microsystems International Corporation
All Rights Reserved
This document shall not be duplicated, nor its contents used for any
purpose, unless granted express written permission from VMIC.
Copyright © August 1988 by
VME Microsystems International Corporation
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iii
VMIC
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. VME MICROSYSTEMS INTERNATIONAL CORPORATION 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 VME
Microsystems International Corporation 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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500-003111-000
1-1
SECTION 1
GENERAL DESCRIPTION
1.1 INTRODUCTION
The VMIVME-3111 Analog-to-Digital Converter (ADC) Board provides
both the stimulus and the response functions encountered in VME closed-loop
analog systems. Self-contained, with a resident 12-bit ADC and Digital-to-Analog
Converters (DACs), the VMIVME-3111 board represents a single board solution to
the analog input/output requirements of such VME applications as process control,
simulators, trainers, and supervisory control.
Because it does not rely upon additional supporting analog boards for
A/D or D/A conversion, the VMIVME-3111 simplifies the task of designing any VME
system which requires both analog inputs and outputs. The following brief
overview of the principal features illustrates the flexibility and performance that is
available with the VMIVME-3111 Board:
a. Thirty-two single-ended or 16 differential P2 analog inputs
b. Sixteen single-ended front panel analog input channels (cable
compatible with the 3V and 5V series signal conditioners)
c. Two analog output channels with 10 mA drive capability
d. Program-controlled off-line operation of analog outputs
e. Resident 12-bit ADCs and DACs
f. Input and output ranges selectable as 0 to +5 V, 0 to +10 V, ±2.5 V,
±5 V, and ±10 V
g. Optional low pass filters available for analog input noise elimination
h. ADC data coding program-selectable as either binary, offset binary, or
two's complement format
i. Automatic ADC timing simplifies programming
j. Stable on-board precision voltage references
k. Program-controlled autocalibration of gain and zero
l. 19 µs A/D conversion time (sample plus conversion)
m. 8 to 120 µs input acquisition time (gains of x1 to x500)
n. On-board smart controller permits interleaved (pipelined) operation
for maximum A/D conversion throughput
o. All inputs and outputs protected against line transients and short
circuits
p. Front panel FAIL indicator
q. Double Eurocard form factor
r. Individually coded/keyed VME connectors
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500-003111-000
1-2
1.2 FUNCTIONAL DESCRIPTION
The VMIVME-3111 ADC Board is a self-contained, 12-bit board. The
analog inputs can be configured either as 48 single-ended channels, or as 16
differential plus an additional 16 single-ended inputs. In addition to user-selectable
ranges, the VMIVME-3111 offers real-time programmable input gains of x1, x10,
x100, and x500. Autocalibration features permit program-controlled calibration of
zero offsets and input gain. A block diagram of the VMIVME-3111 is shown in
Figure 1.2-1.
All inputs are available with low pass filters for noise elimination.
Thirty-two of the input channels are available at the rear panel P2 connector; the
front panel P3 connector contains 16 input channels which are cable compatible with
the VMIC 3V/5V Series of signal conditioners. A resident smart controller permits
"pipelined" ADC operation, and automatically inserts all necessary settling delays.
These features reduce program control of the ADC to a simple handshake
sequence, and provide the highest possible throughput or sample rate, without
degrading accuracy.
Two wideband analog outputs can supply 10 mA of drive current over the
full output range of ±10 V, and can be operated off-line for self-test. Built-in-Test
(BIT) features permit off-line verification of all active components by routing the
analog outputs through the analog input multiplexers.
1.3 REFERENCE MATERIAL LIST
For a detailed explanation of the VMEbus and its characteristics, the
publication "The VMEbus Specification" is available from the following:
VITA
VFEA International Trade Association
10229 N. Scottsdale Road
Scottsdale, AZ 85253
[phone]
The following Application and Configuration Guides are available from
VMIC to assist in the selection, specification, and implementation of systems based
upon VMIC's products:
TITLE DOCUMENT NO.
Digital Input Board Application Guide 825-000000-000
Change-of-State Application Guide 825-000000-002
Digital I/O (with Built-in-Test) Product Line Description 825-000000-003
Synchro/Resolver (Built-in-Test) System Configuration Guide 825-000000-004
Analog I/O Products (with Built-in-Test) Configuration Guide 825-000000-005
Connector and I/O Cable Application Guide 825-000000-006
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