Tektronix DAS-Scan Users Guide

D AS-Scan

USER’S GUIDE

DAS-Scan User’s Guide

Revision B - November 1996

Part Number: 94880

New Contact Information

Keithley Instruments, Inc.

28775 Aurora Road

Cleveland, OH 44139

Technical Support: 1-888-KEITHLEY

Monday – Friday 8:00 a.m. to 5:00 p.m (EST)

Fax: [phone]

Visit our website at http://www.keithley.com

The information contained in this manual is believed to be accurate and reliable. However, Keithley
Instruments, Inc., assumes no responsibility for its use or for any infringements of patents or other rights
of third parties that may result from its use. No license is granted by implication or otherwise under any
patent rights of Keithley Instruments, Inc.

KEITHLEY INSTRUMENTS, INC., SHALL NO T BE LIABLE FOR ANY SPECIAL, INCIDENT AL,
OR CONSEQUENTIAL DAMAGES RELATED TO THE USE OF THIS PRODUCT. THIS
PRODUCT IS NOT DESIGNED WITH COMPONENTS OF A LEVEL OF RELIABILITY
SUITABLE FOR USE IN LIFE SUPPORT OR CRITICAL APPLICATIONS.

Refer to your Keithley Instruments license agreement for specific warranty and liability information.

MetraByte and VTX are trademarks of K eithley Instruments, Inc. All other brand and product names are
trademarks or registered trademarks of their respective companies.

© Copyright Keithley Instruments, Inc., 1996.

All rights reserved. Reproduction or adaptation of any part of this documentation beyond that permitted
by Section 117 of the 1976 United States Copyright Act without permission of the Copyright owner is
unlawful.

Keithley MetraByte Division

Keithley Instruments, Inc.

440 Myles Standish Blvd. Taunton, MA 02780

FAX: [phone]

Telephone: [phone]

●

Preface

The DAS-Scan User’s Guide contains information and instructions for
setting up and using a DAS-Scan data acquisition system.

The manual is intended for data acquisition system designers, engineers,
technicians, scientists, and other users responsible for installing, starting
up, and wiring signals to a DAS-Scan system. It is assumed that you are
familiar with data acquisition principles, with your particular application,
and with an IBM
environment. The computer must use an Intel 80386 or newer central
processor.

®

PC AT

®

computer (or equivalent) in the Windows

®

The DAS-Scan User’s Guide is organized as follows:

Chapter 1 provides an overview of the hardware and describes

●

features, applications, supporting software, and accessories.

●

Chapter 2 describes how to unpack system components, install
software, and configure system components.

●

Chapter 3 describes how to assemble your system.
Chapter 4 describes how to start up and use the DAS-Scan Control

●

Panel to test your system.
Chapter 5 describes how to isolate common problems, how to

●

troubleshoot your system, and how to obtain technical support.
Chapter 6 describes how to calibrate your system.

●

●

Chapter 7 provides functional descriptions for both system and board
levels.

Appendix A contains specifications.

●

●

Appendix B describes how to use the Keithley Memory Manager.

ix

Appendix C contains blank forms you can copy and use for making

●

channel-routing maps.

●

Appendix D contains information on CE certification.

●

Appendix E contains information for enhancing the performance of
your DAS-Scan system.

An index completes the manual.

x

Table of Contents

Preface

1

Overview

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Principal Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Supporting Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

2

Setup

Unwrapping and Inspecting Your Equipment . . . . . . . . . . . . . . .2-2

Checking Your Bundle Contents . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Installing the ASO-SCAN Software. . . . . . . . . . . . . . . . . . . . . . .2-4

Creating a Channel-Routing Map . . . . . . . . . . . . . . . . . . . . . . . .2-6

Configuring the SCAN-AD-HR Interface Board. . . . . . . . . . . . .2-8

Selecting the Base I/O Address. . . . . . . . . . . . . . . . . . . . . . . .2-8

Selecting an External Clock/Trigger/Gate . . . . . . . . . . . . . . .2-9

Selecting 12-Bit or 16-Bit Operation . . . . . . . . . . . . . . . . . .2-10

Configuring the SCAN-BRD Assemblies . . . . . . . . . . . . . . . . .2-10

Setting the Assembly Address. . . . . . . . . . . . . . . . . . . . . . . .2-12

Setting the Channel Input Jumpers . . . . . . . . . . . . . . . . . . . .2-13

Creating/Modifying a Configuration File . . . . . . . . . . . . . . . . .2-16

System Assembly

3

Labelling Channel Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Mounting the SCAN-STP Screw Terminal Panels. . . . . . . . . . . .3-2

Connecting Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Nonisolated Voltage Measurements . . . . . . . . . . . . . . . . . . . .3-5

Isolated Voltage Measurements. . . . . . . . . . . . . . . . . . . . . . . .3-6

Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Nonisolated Thermocouples Measurements . . . . . . . . . . . . . .3-8

Isolated Thermocouples Measurements . . . . . . . . . . . . . . . . .3-9

Mounting a Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

Attaching the SCAN-CAB-64 Cables to the Chassis . . . . . . . .3-12

iii

Setting Up and Testing Chassis Power. . . . . . . . . . . . . . . . . . . .3-19

Setting Up an Internally Powered Chassis . . . . . . . . . . . . . .3-19

Setting Up an Externally Powered Chassis. . . . . . . . . . . . . .3-20

Checking Power Supply Operation. . . . . . . . . . . . . . . . . . . .3-22

Installing and Removing a SCAN-BRD Assembly . . . . . . . . . .3-22

Installing the SCAN-AD-HR Interface Board. . . . . . . . . . . . . .3-25

Connecting the SCAN-AD-HR to the Chassis . . . . . . . . . . . . .3-25

Attaching SCAN-CAB-64 Cables to the SCAN-STPs . . . . . . .3-27

Connecting an External Clock/Trigger/Gate . . . . . . . . . . . . . . .3-28

Attaching Signal-Conditioning Backplanes. . . . . . . . . . . . . . . .3-28

4

Testing the System

Troubleshooting

5

Checking the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Checking the SCAN-AD-HR Interface Board. . . . . . . . . . . . . . .5-2

Checking the Accessory Slot and I/O Connections . . . . . . . . . . .5-5

Checking Chassis Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Checking the SCAN-BRD Assemblies and Inputs . . . . . . . . . . .5-6

Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Calibration

6

Equipment Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Using the Calibration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Calibrating the SCAN-AD-HR Interface Board . . . . . . . . . . .6-3

Calibrating a SCAN-BRD Assembly . . . . . . . . . . . . . . . . . . .6-4

Calibrating the CJC Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . .6-5

Functional Descriptions

7

DAS-Scan System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

SCAN-STP Screw Terminal Panel. . . . . . . . . . . . . . . . . . . . . . . .7-3

SCAN-BRD-TC/TC-ISO Assembly . . . . . . . . . . . . . . . . . . . . . .7-4

Input-Conditioning Circuits . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7

Instrumentation Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7

Address Decoder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

SCAN-BRD-V/V-ISO Assembly. . . . . . . . . . . . . . . . . . . . . . . . .7-8

Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9

Instrumentation Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9

Address Decoder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9

iv

SCAN-AD-HR Interface Board. . . . . . . . . . . . . . . . . . . . . . . . . .7-9

Unipolar/Bipolar Selection . . . . . . . . . . . . . . . . . . . . . . . . . .7-11

Channel Sequencing and Gain Control. . . . . . . . . . . . . . . . .7-11

Maximum Achievable Throughput Rates . . . . . . . . . . . . . . .7-12

Conversion Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-13

Clock Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-14

Pacer Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-14

Burst Mode Conversion Clock. . . . . . . . . . . . . . . . . . . . .7-15

Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-15

Pre-Trigger Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

About-Trigger Acquisition . . . . . . . . . . . . . . . . . . . . . . . .7-18

Post-Trigger Acquisition . . . . . . . . . . . . . . . . . . . . . . . . .7-18

Hardware Gate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

Data Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-19

Specifications

A

Keithley Memory Manager

B

Installing and Setting Up the KMM in Windows 3.1

and Windows for Workgroups 3.11 . . . . . . . . . . . . . . . . . . . . . B-2

Using KMMSETUP.EXE . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Using a Text Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Installing and Setting Up the KMM in Windows 95 . . . . . . . . . B-3

Removing the KMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Blank Channel Mapping Forms

C

D

CE Information for the DAS-Scan System

Limitation of Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Requirements for CE Configuration . . . . . . . . . . . . . . . . . . . . . D-3

Maximizing System Performance

E

Setting up a Scan of More than 256 Channels. . . . . . . . . . . . . . E-1

Improving Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

Reducing the Effects of Power-Line Noise . . . . . . . . . . . . . . . . E-4

Index

v

List of Figures

Figure 1-1. Principal Parts of the DAS-Scan System. . . . . . . .1-3

Figure 2-1. Locations of Switch S1 and Jumpers J6 and J7. . .2-8

Figure 2-2. Base I/O Address Switch. . . . . . . . . . . . . . . . . . . .2-9

Figure 2-3. Jumper J6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Figure 2-4. Jumper J7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Figure 2-5. Configurable Components of SCAN-BRD

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11

Figure 2-6. Thumbwheel Switches. . . . . . . . . . . . . . . . . . . . .2-12

Figure 2-7. SCAN-BRD-TC/TC-ISO Jumper Blocks . . . . . .2-13

Figure 2-8. 16-Position Jumper Block . . . . . . . . . . . . . . . . . .2-14

Figure 2-9. 16-Position and 14-Position Bank Jumpers. . . . .2-15

Figure 2-10. Enabling the CJC Input . . . . . . . . . . . . . . . . . . . .2-15

Figure 3-1. Channel-Routing Labels . . . . . . . . . . . . . . . . . . . .3-2

Figure 3-2. Installing Insertion Blocks. . . . . . . . . . . . . . . . . . .3-4

Figure 3-3. Installing Overlapping Insertion Blocks . . . . . . . .3-4

Figure 3-4. Differential Voltage Inputs (Nonisolated). . . . . . .3-5

Figure 3-5. Single-Ended Voltage Inputs (Nonisolated) . . . . .3-6

Figure 3-6. Differential Voltage Inputs (Isolated) . . . . . . . . . .3-6

Figure 3-7. Single-Ended Voltage Inputs (Isolated). . . . . . . . .3-7

Figure 3-8. Current Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Figure 3-9. Floating Thermocouple Inputs (Nonisolated) . . . .3-8

Figure 3-10. Grounded Thermocouple Inputs (Nonisolated). . .3-8

Figure 3-11. Floating Thermocouple Inputs (Isolated) . . . . . . .3-9

Figure 3-12. Grounded Thermocouple Inputs (Isolated) . . . . . .3-9

Figure 3-13. Full-Size Chassis in Mounting Rack . . . . . . . . . .3-10

Figure 3-14. Half-Size Chassis in Mounting Rack. . . . . . . . . .3-11

Figure 3-15. Mounting a Chassis on a Flat Surface

(Side View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

Figure 3-16. Mounting Screws. . . . . . . . . . . . . . . . . . . . . . . . .3-13

Figure 3-17. Connector Frame . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Figure 3-18. Rear View of Connector Frame

(Half-Size Chassis) . . . . . . . . . . . . . . . . . . . . . . .3-15

Figure 3-19. Partial Rear View of Connector Frame

(Full-Size Chassis). . . . . . . . . . . . . . . . . . . . . . . .3-15

Figure 3-20. SCAN-CAB-64 Cables on Hangers. . . . . . . . . . .3-18

Figure 3-21. Power Cord Receptacle (Internal Power) . . . . . .3-19

Figure 3-22. Strain Relief. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

Figure 3-23. Voltage Connections for the SCAN-CH-HALF

Power Cord Connector. . . . . . . . . . . . . . . . . . . . .3-21

Figure 3-24. Voltage Connections for the SCAN-CH-FULL

Power Cord Connector. . . . . . . . . . . . . . . . . . . . .3-21

vi

Figure 3-25. Ejector Levers Positioned for Inserting a

SCAN-BRD Assembly . . . . . . . . . . . . . . . . . . . .3-23

Figure 3-26. Ejector Lever Positioned for Removing a

SCAN-BRD Assembly . . . . . . . . . . . . . . . . . . . .3-24

Figure 3-27. Connecting SCAN-AD-HR Board to Chassis . . .3-26

Figure 3-28. Connecting Multiple Chassis. . . . . . . . . . . . . . . .3-26

Figure 3-29. Attaching SCAN-CAB-64 Cables to the

SCAN-STPs. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-27

Figure 3-30. Connecting an External Clock/Trigger/Gate

Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28

Figure 3-31. Connecting Signal-Conditioning Backplanes . . .3-29
Figure 4-1. Locations of the Power-On and Board-Select

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Figure 7-1. Block Diagram of the DAS-Scan System . . . . . . .7-2

Figure 7-2. CJC Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Figure 7-3. Block Diagram of SCAN-BRD-TC/TC-ISO. . . . .7-5

Figure 7-4. Input-Conditioning Circuitry. . . . . . . . . . . . . . . . .7-6

Figure 7-5. Block Diagram of SCAN-BRD-V/V-ISO . . . . . . .7-8

Figure 7-6. Block Diagram of SCAN-AD-HR Interface

Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10

Figure 7-7. Conversion Modes. . . . . . . . . . . . . . . . . . . . . . . .7-13

Figure 7-8. Initiating Conversions with a Software Trigger .7-16
Figure 7-9. Initiating Conversions with an External Digital

Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

Figure 7-10. Hardware Gate. . . . . . . . . . . . . . . . . . . . . . . . . . .7-19

Figure D-1. CE Configuration for a DAS-Scan System . . . . . D-3

Figure E-1. Improving Accuracy . . . . . . . . . . . . . . . . . . . . . . E-3

List of Tables

Table 2-1. Bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Table 2-2. Channel-Routing Map . . . . . . . . . . . . . . . . . . . . . .2-7

Table 2-3. Channels Associated with Jumper Blocks. . . . . .2-14

Table 2-4. Default Configuration File Settings. . . . . . . . . . .2-16

Table 2-5. Assembly Addresses . . . . . . . . . . . . . . . . . . . . . .2-18

Table 3-1. Connector Frame Position Numbers . . . . . . . . . .3-16

Table 5-1. Troubleshooting Information. . . . . . . . . . . . . . . . .5-3

Table 7-1. Gains and Ranges for a DAS-Scan System . . . . . .7-3

Table A-1. Specifications for DAS-Scan System . . . . . . . . . A-1

vii

Table 2-1. Bundles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Table 2-2. Channel-Routing Map . . . . . . . . . . . . . . . . . . . . . .2-7

Table 2-3. Channels Associated with Jumper Blocks. . . . . .2-14

Table 2-4. Default Configuration File Settings. . . . . . . . . . .2-16

Table 2-5. Assembly Addresses . . . . . . . . . . . . . . . . . . . . . .2-18

Table 3-1. Connector Frame Position Numbers . . . . . . . . . .3-16

Table 5-1. Troubleshooting Information. . . . . . . . . . . . . . . . .5-3

Table 7-1. Gains and Ranges for a DAS-Scan System . . . . . .7-3

Table A-1. Specifications for DAS-Scan System . . . . . . . . . A-1

Figure 1-1. Principal Parts of the DAS-Scan System. . . . . . . .1-3

Figure 2-1. Locations of Switch S1 and Jumpers J6 and J7. . .2-8

Figure 2-2. Base I/O Address Switch. . . . . . . . . . . . . . . . . . . .2-9

Figure 2-3. Jumper J6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Figure 2-4. Jumper J7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Figure 2-5. Configurable Components of SCAN-BRD Assembly
2-11

Figure 2-6. Thumbwheel Switches. . . . . . . . . . . . . . . . . . . . .2-12

Figure 2-7. SCAN-BRD-TC/TC-ISO Jumper Blocks . . . . . .2-13

Figure 2-8. 16-Position Jumper Block . . . . . . . . . . . . . . . . . .2-14

Figure 2-9. 16-Position and 14-Position Bank Jumpers. . . . .2-15

Figure 2-10. Enabling the CJC Input . . . . . . . . . . . . . . . . . . . .2-15

Figure 3-1. Channel-Routing Labels . . . . . . . . . . . . . . . . . . . .3-2

Figure 3-2. Installing Insertion Blocks. . . . . . . . . . . . . . . . . . .3-4

Figure 3-3. Installing Overlapping Insertion Blocks . . . . . . . .3-4

Figure 3-4. Differential Voltage Inputs (Nonisolated). . . . . . .3-5

Figure 3-5. Single-Ended Voltage Inputs (Nonisolated) . . . . .3-6

Figure 3-6. Differential Voltage Inputs (Isolated) . . . . . . . . . .3-6

Figure 3-7. Single-Ended Voltage Inputs (Isolated). . . . . . . . .3-7

Figure 3-8. Current Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Figure 3-9. Floating Thermocouple Inputs (Nonisolated) . . . .3-8

Figure 3-10. Grounded Thermocouple Inputs (Nonisolated). . .3-8

Figure 3-11. Floating Thermocouple Inputs (Isolated) . . . . . . .3-9

Figure 3-12. Grounded Thermocouple Inputs (Isolated) . . . . . .3-9

Figure 3-13. Full-Size Chassis in Mounting Rack . . . . . . . . . .3-10

Figure 3-14. Half-Size Chassis in Mounting Rack. . . . . . . . . .3-11

Figure 3-15. Mounting a Chassis on a Flat Surface (Side View). .
3-12

Figure 3-16. Mounting Screws. . . . . . . . . . . . . . . . . . . . . . . . .3-13

Figure 3-17. Connector Frame . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Figure 3-18. Rear View of Connector Frame (Half-Size Chassis).
3-15
Figure 3-19. Partial Rear View of Connector Frame (Full-Size
Chassis) 3-15

Figure 3-20. SCAN-CAB-64 Cables on Hangers. . . . . . . . . . .3-18

Figure 3-21. Power Cord Receptacle (Internal Power) . . . . . .3-19

Figure 3-22. Strain Relief. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

Figure 3-23. Voltage Connections for the SCAN-CH-HALF
Power Cord Connector3-21
Figure 3-24. Voltage Connections for the SCAN-CH-FULL
Power Cord Connector3-21

Figure 3-25. Ejector Levers Positioned for Inserting a SCAN-BRD
Assembly 3-23
Figure 3-26. Ejector Lever Positioned for Removing a SCAN-BRD
Assembly 3-24
Figure 3-27. Connecting SCAN-AD-HR Board to Chassis . . .3-26

Figure 3-28. Connecting Multiple Chassis. . . . . . . . . . . . . . . .3-26

Figure 3-29. Attaching SCAN-CAB-64 Cables to the SCAN-STPs
3-27
Figure 3-30. Connecting an External Clock/Trigger/Gate Signal .
3-28
Figure 3-31. Connecting Signal-Conditioning Backplanes . . .3-29
Figure 4-1. Locations of the Power-On and Board-Select LEDs.
4-3

Figure 7-1. Block Diagram of the DAS-Scan System . . . . . . .7-2

Figure 7-2. CJC Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Figure 7-3. Block Diagram of SCAN-BRD-TC/TC-ISO. . . . .7-5

Figure 7-4. Input-Conditioning Circuitry. . . . . . . . . . . . . . . . .7-6

Figure 7-5. Block Diagram of SCAN-BRD-V/V-ISO . . . . . . .7-8

Figure 7-6. Block Diagram of SCAN-AD-HR Interface Board. .
7-10

Figure 7-7. Conversion Modes. . . . . . . . . . . . . . . . . . . . . . . .7-13

Figure 7-8. Initiating Conversions with a Software Trigger .7-16
Figure 7-9. Initiating Conversions with an External Digital
Trigger 7-17

Figure 7-10. Hardware Gate. . . . . . . . . . . . . . . . . . . . . . . . . . .7-19

Figure D-1. CE Configuration for a DAS-Scan System D-3

Figure E-1. Improving Accuracy E-3

1

Overview

This chapter describes the following:

Features of a DAS-Scan system

●

●

Principal parts of a DAS-Scan system

●

Supporting software

Features

Accessories

●

The DAS-Scan system is a measuring system capable of multiplexing up
to 4,096 separate inputs for delivery to a single-channel interface board
(SCAN-AD-HR) that performs A/D (analog-to-digital) conversions. The
system measures the outputs of voltage, current, and/or thermocouple
sensors fed to inputs that can be isolated or nonisolated. Input from
voltage sensors can be differential or single-ended; inputs from current
output devices can be from 0 to 20 mA; input from thermocouple sensors
can be floating or grounded.

The SCAN-AD-HR interface board is designed for installation in an ISA
(industry standard architecture) accessory slot of the computer. Other
principal parts of the DAS-Scan system include the SCAN-BRD
multiplexer assemblies, the SCAN-CH chassis that contain the
multiplexer assemblies, the SCAN-STP screw terminal panels, and the
cables that connect the principal parts.

Features 1-1

The SCAN-BRD assemblies are housed in rack-mountable SCAN-CH
chassis that provide power and shielding. The SCAN-STP screw terminal
panels are the interfaces for field wiring from the voltage, current, and
thermocouple sensors and are mountable on DIN rails for convenient
access (DIN is Deutsch Industrie Norm , a German standards
organization).

Additional features of a DAS-Scan system include the following:

A 256-position channel-gain queue allows you to program the

●

multiplexing order and gain of each channel.

●

The chassis is an industry-standard Eurocard cage with EMC
(electromagnetic compatibility) shielding.

●

The DAS-Scan system fully meets CE certification requirements.

●

Chassis design allows SCAN-BRD assemblies to be inserted or
removed without disturbing field wiring.

●

Multiple chassis systems can be daisy chained together.
Gains of 1, 2, 4, 8, 50, 100, 200, and 400 are software-selectable with

●

a maximum input range of 0 to 10 V in unipolar mode or ±10 V in
bipolar mode.

The ASO-SCAN software package includes the following:

●

– Support for programming in Windows languages such as C/C++

and Visual Basic.
– Utilities for configuring, calibrating, and testing your system.
– Example programs that show how to accommodate

medium-channel and large-channel applications and how to

linearize thermocouple measurements.
– Support for using the ASO-SCAN software package to write

32-bit programs in the Windows 95 environment.

●

The power supply in an internally powered chassis is self-sensing for
voltages in the range of 90 to 264 VAC.

1-2 Overview

Principal Parts

Figure 1-1 shows the principal parts of the DAS-Scan system.

Inputs

Inputs

#

#

#

#

SCAN-STP-XX
screw terminal
panel (two per
SCAN-BRD
assembly)

S1802/M cable

SCAN-CAB-64
cable (one per
SCAN-STP)

SCAN-BRD assembly
(up to 7 per half-size or
14 per full-size chassis;
up to 64 in a system)

S-1802/MM cable
to next chassis in a
daisy chain (if
used)

SCAN-CH chassis
(available in full- size
or half-size models)

Figure 1-1. Principal Parts of the DAS-Scan System

Computer

SCAN-AD-HR
interface board
(interfaces with up to
64 SCAN-BRD
assemblies in
daisy-chained
chassis)

Principal Parts 1-3

The principal parts of a DAS-Scan system are described as follows:

SCAN-STP screw terminal panels - Accept 32 pairs of wires from

●

voltage, current, or thermocouple sensors. The following models of
SCAN-STPs are available:

– SCAN-STP-V - Accepts wiring from voltage sensors.
– SCAN-STP-I - Accepts wiring from current sensors; provides

current-to-voltage conversion.
– SCAN-STP-TC - Accepts wiring from thermocouples; contains a

sensor for cold junction compensation (CJC).

●

SCAN-BRD assemblies - Dual-board assemblies that accept up to 64

inputs from two SCAN-STP screw terminal panels and multiplex the
inputs into a single channel for delivery to the SCAN-AD-HR
interface board. The following models of SCAN-BRD assemblies are
available:

– SCAN-BRD-TC-ISO - Isolated assembly for measuring voltage,

current, or thermocouple inputs.
– SCAN-BRD-TC- Nonisolated assembly for measuring voltage,

current, or thermocouple inputs; provides higher multiplexing

speeds.
– SCAN-BRD-V-ISO - Isolated assembly for measuring voltage or

current inputs.
– SCAN-BRD-V - Nonisolated assembly for measuring voltage or

current inputs; provides higher multiplexing speed.

●

SCAN-CAB-64 cable - A 100-inch (2.5 m) cable that connects a

SCAN-STP screw terminal panel to a SCAN-BRD assembly.

●

SCAN-CH chassis - Shields and powers the SCAN-BRD assemblies.

The following models of SCAN-CH chassis are available:
– SCAN-CH-FULL - Full-size chassis (holds 14 SCAN-BRD

assemblies) with internal DC power supply; fits standard 19-inch

rack.
– SCAN-CH-HALF - Half-size chassis (holds seven SCAN-BRD

assemblies) with internal DC supply; can be used with the

SCAN-ADAPTER-HALF accessory kit to fit standard 19-inch

rack.

1-4 Overview

– SCAN-CH-FULL/NO PWR - Version of SCAN-CH-FULL

without internal power supply.
– SCAN-CH-HALF/NO PWR- Version of SCAN-CH-HALF

without internal power supply.

PWRCORD power cord - For chassis with internal power supplies.

●

The following models are available:
– PWRCORD/NA - For use in North America.
– PWRCORD/EUR- For use in continental Europe (except the

United Kingdom).
– PWRCORD/UK - For use in the United Kingdom.

S-1802/M cable - A 3.5-foot (1.1 m) shielded cable that connects the

●

first chassis in your DAS-Scan system to the SCAN-AD-HR interface
board.

S-1802/MM cable - A 3.5-foot (1.1 m) shielded cable that connects

●

additional SCAN-CH chassis in a multiple-chassis system.

SCAN-AD-HR interface board - Fits an ISA accessory slot in an

●

IBM PC AT (or equivalent) computer. The SCAN-AD-HR contains
the A/D conversion circuitry.

Supporting Software

The following software is available for operating a DAS-Scan system:

ASO-SCAN software package - The software shipped with a

●

DAS-Scan system. This package allows you to write programs in the
Windows 3.1, Windows for Workgroups 3.11, or Windows 95
environment using Microsoft
Windows,

DAS-Scan Function Call Driver User’s Guide and to the online help

for the DAS-Scan Function Call Driver for more information.

®

or Microsoft Visual Basic

Visual C++™, Borland

®

®

for Windows. Refer to the

C/C++ for

Supporting Software 1-5

NT

The following utility programs are provided with the ASO-SCAN
software package:

– DAS-Scan Control Panel - The control panel (CTLSCAN.EXE)

runs under Windows and allows you to perform simple analog

input operations on one SCAN-BRD assembly at a time without

programming. This utility provides a quick way to test your

DAS-Scan system. Refer to Chapter 4 and to the control panel

online help for more information.
– DAS-Scan Configuration Utility - The configuration utility

(CFGSCAN.EXE) allows you to create a configuration file for

use with the DAS-Scan Function Call Driver and other software.

Refer to page 2-16 and to the configuration utility online help for

more information.
– Keithley Memory Manager - The Keithley Memory Manager

(KMM) allows you to reserve memory for your data collection

program. Refer to Appendix B for more information.

VTX ™ (Visual Test Extensions ™) - This optional software package

●

enables you to create data acquisition programs using an integrated
set of custom controls within the Visual Basic for Windows
environment. Refer to the Keithley MetraByte product catalog for
more information.

●

TestPoint ™

- This optional software package allows you to create
data acquisition programs in the Windows 3.1, Windows for
Workgroups 3.11, Windows 95, or Windows NT 3.51 environment
using a set of professional software tools instead of programming.
Refer to the Keithley MetraByte catalog or contact your local sales
office for more information.

Driver LINX

●



- This optional, high-performance driver allo ws you
to create custom data acquisition programs in the Windows NT
environment. Refer to the K eithley MetraByte catalog or contact your
local sales office for more information.

1-6 Overview

Accessories

The following accessories are available for your DAS-Scan system:

●

SCAN-ADAPTER-HALF kit - Allows you to adapt a half-size

chassis to fit a standard 19-inch mounting rack; includes an adapter
panel and screws.

●

DIN rail - Allows you to mount your SCAN-STP screw terminal

panels in locations with convenient access to field wiring.

●

SCAN-MOUNT-PAIR - A pair of angle brackets for attaching a

full-size or half-size chassis to a horizontal surface.

CAB-SMA-BNC cable - A 3-foot clock/trigger/gate input cable with

●

a female SMA connector to female BNC connector. This cable
connects to connector J5 on the SCAN-AD-HR interface board.

●

SCAN-SE-INSERT - A package of twelve 6-position insertion

blocks for shorting up to six alternate screw terminals of a
SCAN-STP screw terminal panel. These blocks simplify the
conversion of differential inputs to single-ended inputs at the screw
terminals of the SCAN-STPs.

MB01 backplane - A 16-channel backplane; plug-in MB Series

●

modules provide isolation and signal-conditioning. Refer to the MB

Series User’s Guide for more information.

7BP16 backplane - A 16-channel backplane; plug-in 7B Series

●

modules provide isolation and signal-conditioning. The 7BP16
backplane is available from Analog Devices, Inc. (800 426-2564).

SCAN-ADAPTER-MB adapter - Used to connect an MB01 or

●

7BP16 backplane to a SCAN-BRD assembly (two adapters per
SCAN-BRD assembly; two backplanes per adapter).

AC1393 cable - A 6-inch adapter cable that connects a 7BP16

●

backplane to a SCAN-ADAPTER-MB. The AC1393 cable is
available from Analog Devices, Inc. (800 426-2564).

C-2600 cable - An 18-inch ribbon cable with a 26-pin female header

●

connector at each end; allows you to connect a
SCAN-ADAPTER-MB adapter to an MB01 or 7BP16 backplane.

Accessories 1-7

2

Setup

This chapter describes the following:

How to unwrap and inspect your equipment

●

●

How to check the contents of your equipment bundles

●

How to install the ASO-SCAN software
How to create a channel-routing map

●

How to configure the SCAN-AD-HR interface board

●

How to configure a SCAN-BRD assembly

●

●

How to create or modify a configuration file

2-1

Unwrapping and Inspecting Your Equipment

To prevent any damage to your DAS-Scan system, perform the following
steps when unpacking the equipment:

1. Remove the wrapped DAS-Scan equipment from its outer shipping
carton.

2. Before you remove the SCAN-AD-HR interface board, SCAN-BRD
assemblies, and SCAN-STP screw terminal panels from their
anti-static wrappers, discharge any static electricity from yourself and
the packages as follows:

– If you are not wearing a grounded wrist strap, hold the wrapped

equipment in one hand while placing your other hand firmly on a
metal portion of the computer chassis. (Your computer must be
turned OFF but grounded.)

– If you are wearing a grounded wrist strap, static electricity is

discharged as soon as you hold the equipment.

3. Carefully remove the anti-static wrappers. (You may wish to store the
wrapping material for future use.)

4. Inspect all pieces from the package for signs of damage. If damage is
apparent, arrange to return the damaged pieces to the factory; refer to
page 5-7.

5. Check the contents of your package against the packing list to be sure
your order is complete. Report any missing items immediately.

6. Check the contents of any equipment bundles against the bundle lists
in the next section. Report any missing items immediately.

7. When you are satisfied with the inspection, proceed with the software
and hardware setup instructions provided later in this chapter.

Note:

adjustment prior to installation. If you decide to recalibrate at a later time,
refer to Chapter 6 for instructions.

DAS-Scan equipment is factory calibrated and requires no further

2-2 Setup

Checking Your Bundle Contents

During your selection and purchase of DAS-Scan equipment, you
considered equipment packages called "bundle" options. Table 2-1 lists
the equipment part numbers and quantities packaged in each of the
available DAS-Scan bundles. Check the bundles you ordered and make
sure that you received the correct equipment.

Table 2-1. Bundles

Bundle Part Number Description Number

SCAN-SYS-FULL SCAN-CH-FULL Full chassis with power supply 1

SCAN-AD-HR Interface board 1
S-1802/M SCAN-AD-HR to SCAN-CH

chassis cable 1

SCAN-SYS-HALF SCAN-CH-HALF Half chassis with power supply 1

SCAN-AD-HR Interface board 1
S-1802/M SCAN-AD-HR to SCAN-CH

chassis cable 1

SCAN-SYS-TC-ISO SCAN-BRD-TC-ISO Isolated thermocouple

assembly 1
SCAN-STP-TC Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-TC to SCAN-BRD

assembly cable 2

SCAN-SYS-TC SCAN-BRD-TC Nonisolated thermocouple

assembly 1
SCAN-STP-TC Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-TC to SCAN-BRD

assembly cable 2

Checking Your Bundle Contents 2-3

Table 2-1. Bundles (cont.)

Bundle Part Number Description Number

SCAN-SYS-V-ISO SCAN-BRD-V-ISO Isolated voltage assembly 1

SCAN-STP-V Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-V to SCAN-BRD

assembly cable 2

SCAN-SYS-V SCAN-BRD-V Nonisolated voltage assembly 1

SCAN-STP-V Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-V to SCAN-BRD

assembly cable 2

SCAN-SYS-I-ISO SCAN-BRD-V-ISO Isolated voltage assembly 1

SCAN-STP-I Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-I to SCAN-BRD

assembly cable 2

SCAN-SYS-I SCAN-BRD-V Nonisolated voltage assembly 1

SCAN-STP-I Screw terminal panel 2
SCAN-CAB-64 SCAN-STP-I to SCAN-BRD

assembly cable 2

Installing the ASO-SCAN Software

To install the ASO-SCAN software package, perform the following steps:

1. Make copies of the supplied disks. Use the copies as your working
disks and store the originals as backups.

2. Insert disk 1 into an appropriate disk drive.

3. Start Windows, if necessary.

4. If you are using Windows 3.1 or Windows for Workgroups 3.11 :
– Click Run on the File menu of the Program Manager.

If you are using Windows 95 :

– Click Run on the Start menu.

2-4 Setup

5. In the Run dialog box, enter the appropriate drive letter and the setup
command. For example, if the disk is in drive A, enter

a:\setup

and then click OK .
The installation program prompts you for your installation

preferences, including which languages you will be using and the
drive and directory you want to copy the software to. It also prompts
you to insert additional disks, as necessary.

6. Continue to insert disks and respond to prompts, as appropriate.
When the installation program prompts you for a drive designation,

enter a designation of your choosing or accept the default drive C.
When the installation program prompts you for a directory name,
enter a name of your choosing or accept the default name.

The installation program creates a directory on the specified drive and
copies all files, expanding any compressed files.

The installation program also creates a DAS-Scan program group;
this program group includes icons for the Keithley MetraByte
utilities, example programs, and help files.

7. If you are using Windows 95 to write 32-bit programs , install the
ASO-Win95/32-Bit software, as follows:

– Insert the ASO-W in95/32-Bit disk into the appropriate disk dri ve.
– Click Run on the Start menu.
– In the Run dialog box, enter the appropriate drive letter and the

setup command. For example, if the disk is in drive A, enter

a:\setup

and then click OK .

– Respond to the prompts, as appropriate. To avoid overwriting

files with the same name, install the ASO-Win95/32-Bit software
in a different directory from the one in which you installed the
ASO-SCAN software package.

Installing the ASO-SCAN Software 2-5

8. When the installation program notifies you that the installation is
complete, review the following files:

– FILES.TXT lists and describes all the files copied to the hard disk

by the installation program.

– README.TXT contains information that was not available when

this manual was printed. (Note that there are two README.TXT
files: one in the ASO-SCAN installation directory and another in
the ASO-Win95/32-Bit installation directory.)

Creating a Channel-Routing Map

Before you can assemble your DAS-Scan system, you must plan and map
the routing of the input channels through the SCAN-STP screw terminal
panels, the SCAN-CAB-64 cables, and the SCAN-BRD assemblies. The
system assembly process can then follow your map. In your planning
process, it is recommended that you keep SCAN-BRD assemblies of the
same type together as much as possible. Table 2-2 is an example of a
channel-routing map for a SCAN-BRD assembly in slot 5 with two
SCAN-STP screw terminal panels. Blank mapping forms are av ailable for
copying in Appendix C.

Note:

connect SCAN-STP #0 to the base board of a SCAN-BRD assembly and
that you always connect SCAN-STP #1 to the mezzanine board. Please
create your channel-routing map accordingly.

2-6 Setup

Software for your DAS-Scan system requires that you always

Table 2-2. Channel-Routing Map

Chassis #
(User’s Choice)

1

Chassis
Slot #
(1 to 7 or
1 to 14)

SCAN-BRD
Address
(00h to 3Fh)

SCAN-BRD
Chan. #
(0 to 63)

SCAN­STP #
(0 or 1)

5 04 0 (Base brd.) 0 0 0 1st sensor

SCAN-STP
Screw
Terminal
(0 to 31)

System
Chan. #
(0 to 4095)

Channel Tag
(User’s Choice)

" " " 1 (Base brd.) 0 1 1 2nd sensor
" " " 2 (Base brd.) 0 2 2 3rd sensor
" " " 3 (Base brd.) 0 3 3 4th sensor
" " " 4 (Base brd.) 0 4 4 5th sensor
" " " 5 (Base brd.) 0 5 5 6th sensor
" " " 6 (Base brd.) 0 6 6 7th sensor
" " " 7 (Base brd.) 0 7 7 8th sensor

•

•

•
" " " 29 (Base brd.) 0 29 29 30th sensor
" " " 30 (Base brd.) 0 30 30 31st sensor
" " " 31 (Base brd.) 0 31 31 32nd sensor
1 5 04 32 (Mezz. brd.) 1 0 32 33rd sensor
" " " 33 (Mezz. brd.) 1 1 33 34th sensor
" " " 34 (Mezz. brd.) 1 2 34 35th sensor
" " " 35 (Mezz. brd.) 1 3 35 36th sensor
" " " 36 (Mezz. brd.) 1 4 36 37th sensor
" " " 37 (Mezz. brd.) 1 5 37 38th sensor
" " " 38 (Mezz. brd.) 1 6 38 39th sensor
" " " 39 (Mezz. brd.) 1 7 39 40th sensor

•

•

•
" " " 60 (Mezz. brd.) 1 28 60 61st sensor
" " " 61 (Mezz. brd.) 1 29 61 62nd sensor
" " " 62 (Mezz. brd.) 1 30 62 63rd sensor
" " " 63 (Mezz. brd.) 1 31 63 64th sensor

Creating a Channel-Routing Map 2-7

Configuring the SCAN-AD-HR Interface Board

Configurable hardware on the SCAN-AD-HR interface board includes a
base I/O address switch, a 2-position jumper (J6) for selecting an external
clock/trigger/gate, and a 2-position jumper (J7) for selecting 12-bit or
16-bit operation, as shown in Figure 2-1.

Jumper J7: selects
12-bit or 16-bit
operation

SCAN-AD-HR interface board

Base I/O
address
switch S1

Jumper J6: selects
external clock or
trigger/gate signal

Figure 2-1. Locations of Switch S1 and Jumpers J6 and J7

The following subsections describe how to select the base I/O address, an
external clock/trigger/gate, and 12-bit or 16-bit operation.

Selecting the Base I/O Address

The SCAN-AD-HR interface board requires 16 consecutive 8-bit
locations in the I/O space of your computer starting at the base address.
The SCAN-AD-HR is shipped with a base address of 300h. If any of the
required address locations starting at base address 300h are being used by
another resource in your system, you must reconfigure the base address
using the base I/O address switch. The base I/O address switch is a
6-position DIP switch, shown in Figure 2-2. Use the information in
Figure 2-2 to determine the setting for a new base address.

Connector J5: input for external
clock, trigger, or gate signal

2-8 Setup

Hexadecimal value

Decimal value

Computer
address line

200

512

A9

O
N

1 2 3 4 5 6

100

256

A8

80

128

A7

40

64

A6

32

20

A5

10

16

A4

Switch settings
indicate a base
address of

512 + 256 = 768 decimal

200h + 100h = 300h

Note: The values of all
switches in the OFF
position are added
together to determine
the base address.

or

Figure 2-2. Base I/O Address Switch

Note that the least-significant address line in Figure 2-2 is A4. This line
has a decimal value of 16; therefore, the address you select must have a
16-byte boundary.

Selecting an External Clock/Trigger/Gate

When using an external clock signal on coaxial connector J5, set jumper
J6 for XCLK. When using an external trigger or gate on coaxial connector
J5, set jumper J6 for TGIN. When using the internal clock or trigger/gate
source, the position of J6 does not matter. The locations of connector J5
and jumper J6 are shown in Figure 2-1 on page 2-8. Jumper J6 is shown in
Figure 2-3.

J6

TGINXCLK

Figure 2-3. Jumper J6

Configuring the SCAN-AD-HR Interface Board 2-9