Tektronix DAS-1600/1400 Series Users Guide

DAS-1600/1400 Series

User’s Guide

.frm Page 1 Monday, June 6, 1994 2:45 PM

DAS-1600/1400 Series

User’s Guide

Revision A June 1994

Part Number: 81490

The information contained in this manual is believed to be accurate and reliable. However, the
manufacturer 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 the manufacturer.

THE MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, 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.

All brand and product names are trademarks or registered trademarks of their respective companies.

0 Copyright Keithley Instruments, Inc., 1994.

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 Copvight owner is
unlawful.

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Table of Contents

Preface

Manual Organization. . . . .

Related Documents

1 Overview

Features
Supporting Software
Accessories

2

Functional Description

Analog Input Features ...........................

Analog Output Features (DA.%1600 Series Only)
Digital I/O Features

Counter/Timer Features. .........................

Wait State Selection. ............................

Power ........................................

......................................

...................................

Differential/Single-Ended Selection
UnipolariBipolar Selection
Channei Selection in Expanded Configurations.

Gain Selection. ..............................

Conversion Modes
Clock Sources
Triggers
Data Transfer Modes.

...............................

....................................

............................

..............

.....................

...........................

.........................

.............................

....

xi

.

Xl,1

. 1-l

1-3
1-7

.2-3
.2-3

2-3

.2-4

. .2-5

.2-6

.,2-x

.2-9

.%I0

2-11
:2-12
.2-13
.2-14
.2-14

3 Setup and Installation

Iuspecting Your Package
Installing the Software Package.

Installing the DAS-1600/1400 Series Staudard Software. . .3-Z
Installing the ASO- and ASO- Advanced Software

Option...........................................3 -3

DOS Installation.
Windows Installation

Creating a Configuration File

Default Configuration File ..........................

Configuration Utility.

................................

..............................

........................

............................

..........................

...............................

,3-l
,3-2

3-3
.3-4
,3-6
.3-6

3-X

1600ug.toc Page iv Monday, June 6, 1994 2:46 PM

Setting Switch-Configurable Options 3-14

Setting the DAC BipolarRluipolar Switch

(DAS- 1600 Series Only) ,3- 15

Setting the DACO aud DACl Reference Voltage Switches

(DAS-1600 Series Only) . .3-15
Selting the ADC Bipolar/Unipolar Switch , ,3-16
Setting the Chau 8/16 Switch .3-16

Setting au Alternate Base Address . ,3-16
Setting the Clock Select Switch ,3-18

Setting the Wait State Enable Switch . .3-18

Setting the DMA Channel Select Switch ,3-18

Installing the Board . . .3- 18

4

Cabling and Wiring
Attaching Screw Terminal Connectors and Accessories ,4-Z

Attaching an STC-37 .4-2
Attaching an STP-37. . ~. .4-5
Attaching an STA-16.. ,4-6
Attaching an STA-LJ . .4-8

Attaching Expansion Accessories ,4- IO

Attaching an EXP-16 or EXP-16/A Expansion Accessory

4

Attaching an EXP-GP Expansion Accessory ,4- 12

Attaching Multiple Expausion Accessories ,4- 13
Attaching an ISO- Accessory. .4- 15
Attaching SSH Accessories. ,4-16

Attaching an SSH-4/A . . . . ,4- 17

Attaching an SSH-8 .4- 17

Attaching an MB Series Backplane. ,4-20

Attaching an MB01 Backplane. .4-21

Attaching au MB02 Backplane. . .4-22
Connecting Analog Signals . . ,4-24

Precautions for Using DAS-1601/1401Boards at

High Gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-2

Additional Precautions .4-25
Connecting a Signal to a Single-Ended Analog Input .4-26
Connecting a Signal to a Differeutial Analog Input .4-27

Common Connection Schemes for Differential Inputs ,4-27
Avoiding Ground Loops with Differential Inputs .4-29

Connecting Analog Output Signals. ,4-3 1

.4- 11

4

4

5 The Control Panel

iv

4

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4

Calibration

6

Equipment Requirements. ............................

Potentiometers and Test Points ..........................

Calibration Utility

7 Troubleshooting

Problem Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...7-I

Identifying Symptoms and Possible Causes. . ,7-l
Testing the Board and Host Computer .7-4
Testing the Accessory Slot and I/O Connections ,7-5

Technical Support , ,7-6

Specifications

A

B Connector Pin Assignments

Main I/O Connector (Jl) . . .B-2

PI0 Cable Connector (J2) (DAS-1600 Series Only). .B-3

...................................

..6- 1

6-1

.6-2

4

Using the DA-S-1600 External Driver

c

Options Supported
Quick Start

Setting Up the Board.

Loading the DAS-1600 External Driver.
Loading the External Driver in Multiple Board

Configurations.

Using the External Driver with Application

SoftwarePackages.. ............................

DAS- 1600 External Driver Characteristics

Channels and Gains. ...............................

Cascading Multiple Expansion Accessories.
Setting Expansion Accessory Gains

ConversionModes.. .............................

Clock Sources....................................C-14

Triggers

........................................

VIEWDAC.....................................C- 4

EASYESTLXIAG.. ...........................

ASYST........................................C- 5

Using Pseudo-Digital Output Channels.
BurstModeandSSHMode..
Altering the Burst Mode Conversion Rate.

........................................

...................................

..............................

..................................

.C- I

..c- 2

.C-2

...............

................

............

...................

.............

..................... C-10

...........

.C-3
.C-3

..C- 4

.C-4

.C-5
.C-5
.C-6
.C-7

..C- 8

.C-8

C-l I

.c-14

4

2

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Using Pseudo-Digital Output Channels,
Types of Analog Triggers.

Using a Hysteresis Value
Synchronous, DMA, and Interrupt Operations,
Digital I/O Characteristics

DAS-1600 Series Boards

DAS-1400 Series Boards

Counter/Timer Functions ......................

Event Counting

Pulse Output ..............................

Software Interrupt Vectors

DAS- 1600 External Driver Error Messages

D

Keithley Memory Manager

Installing and Setting Up the KMM.

Using

KMMSETUPEXE

Using a Text Editor. ..........................

Removing the KMM ............................

E

Register-Level Address Map

Register Functions ...................................

ADC Registers (Base Address +Oh and + lh)
MUX Scan Register (Base Address +2h)

Unidirectional Digital Input and Output Registers

(Base Address +3h)

DAC Output Registers (Base Address +4h to +7h)

(DAS-1600 Series Only) ............................

DACO..
DACl

DAC Controller Modes. ............................

Status Register A (Base Address +8h).
Control Register (Base Address +9h)
Counter Enable/Burst Length Register (Base Address +Ah) .E-14

Gain Selection/Burst Rate Register (Base Addresses +Bh).

8ZC54 Programmable Interval Counter/I?mer

(Base Addresses +Ch, +Dh, +Eh, +Ph)

Generating Square Waves of Programmed Frequency, .E-20
Measuring Frequency and Period.
Using Counter 0 for Generating Programmable

Time Delays ..................................

.......................................

.........................................

...........................

.................................

...................

....................

.....

.....................

....................

....................

.....................

..........

................

......................

.............. .E-3

................. .E-4

.................. .E-10

................... .E- 12

................. .E- 18

................... .E-21

.c-14
.c-17
.C-18

.c-19
.c-20
.c-20

.C-24
.C-25
.C-25
.C-26
.C-26
.C-27

D-2
D-2
D-3

. D-4

.E-1

.E-5

..E -7
..E- 7
..E- 8

.E-8

.. .E-16

..E-2 2

vi

8

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82C54 Counter/Tiier Control Register

(Base Address +Fh) . . . . .E-23

Readback Command Byte (Returned when

SC1 and SC0 are 1) . .E-26

Status Byte Format (Returned if STA =O) .E-27
Bidirectional Digital Ports A, B, CL, and CH 8255A-5
Programmable Peripheral Interface

(Base Address +400h to +403h). . . .E-28

Control Register (Base Address +403h). .E-29
Conversion Disable Register (Base Address +404h). .I%32
Burst Mode Enable Register (Base Address +405h). .E-33

1600/1400 Mode Enable Register (Base Address +406h). . .E-33

Status Register B (Base Address +407h), . .E-33

Index

List of Figures
Figure 2-l.
Figure 2-2.

Functional Block Diagram.. I . . .2-2
Expanding the Analog Inputs of DAS-1600/1400

Series Boards.. . . .2-4

Figure 2-3.
Figure 3-l.

Timing Relationships of Conversion Modes. .2-7

Default Switch Configuration for DAS-1600

Series Boards. . . . . . . . .3-14

Figure 3-2.

Default Switch Configuration for DAS-1400

Series Boards. .3-15

Figure 3-3.

Base Address, Clock Select, and Wait State Enable

Switch.................................3-17

Figure 4-1.

Figure 4-2.

Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.
Figure 4-8.
Figure 4-9.

Attaching an STC-37 Screw Terminal Connector. 4-3

Pin Assignments of the Main I/O Connector (Jl) .4-4

Attaching an STP-37 to the Main I/O Connector .4-5

Attaching an STA-16. . .4-7
STA-16 Terminal Names.. I . .4-7

Cabling and Connections for Attaching an STA-U4-8
STA-U Terminal Names . . .4-9
Pin Assignments of PI0 Cable Connector (52). .4-10

Attaching anEXP-16 or EXP-16/A Expansion

Accessory.. . . . .‘. . , . . , . .4-11

Figure 4-10. Attaching an EXP-GP Expansion Accessory ,4- 13
Figure 4-l 1. Attaching Multiple Expansion Accessories. .4-14
Figure 4-12. Attaching Multiple Expansion Accessories

withanSTA-16orSTA-U . . ~ ~ . 4-15

vii

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4

Figure 4-13. Attaching an ISO- Accessory .4-16
Figure 4-14. A Typical SSH-8 Application .4-16
Figure 4-15. Attaching an SSH-4/A Accessory. .4-17
Figure 4-16. Attaching SSH-8 Accessories .4-18
Figure 4-17. Attaching SSH-8 and STA-16 Accessories, .4-19
Figure 4-18. Typical Measurement and Control Application .4-20

Figure 4-19. Attaching an MB01 Backplane. .4-21
Figure 4-20. Attaching Multiple MB02 Backplanes .4-22
Figure 4-21. MB02 I/O Connections 4-23
Figure 4-22.

Figure 4-23. Three Methods of Wiring Differential Inputs .4-28
Figure 4-24.

Figure 4-25. Differential Input Configuration with a
Figure B-l.
Figure B-2.

Figure C-l.

4

Figure C-2.

Connections for Wiring a Signal Source to a

DAS-1600/1400 Series Board Configured for

Single-Ended Inputs . . .4-26

A Differential Input Configuration that Avoids a

GroundLoop............................4-30

GroundLoop............................4-30

Pin Assignments of Main I/O Connector (II) on

DAS-1600/1400 Series . .B-2

Pin Assignments of PI0 Cable Connector (52). .B-3

Analog Trigger Conditions .C-18

Using a Hysteresis Value. .C- 19

4

4

List of Tables
Table 1.
Table 2.
Table 2-l.

Table 2-2.
Table 3-l.

Table 3-2.
Table 3-3.
Table 4- 1.
Table 4-2.
Table 4-3.
Table 4-4.
Table 7-1.
Table A-l.
Table A-2.
Table A-3.

Finding Information. xii
Related Documents . xiii

DAS-1601/1401 Gains, Ranges, and Throughput
Rates for Unipolar and Bipolar Selections .2-6
DAS-1602/1402 Gains, Ranges, and Throughput
Rates for Unipolar and Bipolar Selections 2-6

Default Configuration File Settings. .3-7

Standard Address Assignments. .3- 10

Standard Interrupt Request (IRQ) Assigmnents .3- 11
EXP-16 and EXP-16/A Terminal Names .4-l I
EXP-GP Terminal Names .4-12

MB Series Backplanes. .4-21

DAC Input and Output Connections. .4-31
Troubleshooting Information. . ,7-2

Analog Input Specifications . . . . . . A- 1

Analog Output Specifications . . A-4

Digital I/O Specifications

(g-bits on Main Connector). . . . . A-5

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4

4

4

Table A-4.

Table A-5.

Table A-6.

Table A-7.

Table C- 1.
Table C-2.

Table C-3.

Table C-4.
Table C-5.
Table C-6.

Table C-7.
Table C-8.
Table C-9.
Table C- 10.
Table C-l 1.

Table C-12.
Table C- 13.
Table C-14.
Table C- 15.
TableE-1.
Table E-2.
Table E-3.
Table E-4.
Table E-5.
Table E-6.
Table E-7.

Table E-8.
Table E-9.

Table E-10.
Table E- 11.

Digital I/O Specifications
(24-bits on Auxiliary Connector)
Programmable Counter/Timer Specifications.
Power Supply Requirements. .
Environmental Specifications
Supported Gains and Gain Codes
Logical and Physical Channels
Pseudo-Digital Output Channels
(Burst / SSH Mode).
Default Settling Times.

Common Settling Times
Pseudo-Digital Output Channels

(Analog Trigger)
Digital I/O Channel Usage;
No EXPs, All Ports Output
Digital I/O Channel Usage;
EXPs Used, All Ports Output . .
Digital I/O Channel Usage;
No EXPs, A and B Output, CL and CH Input.

Digital I/O Channel Usage;

No EXPs, B and CH Output, A and CL Input. .C-23
Digital I/O Channel Usage; No EXPs .C-24

Digital l/O Channel Usage; EXPsUsed .C-24

Counter/Timer Functions. .C-25

Interrupt Vectors . . . . . .C-26

Error Messages .C-27

Register-Level Address Map. . . . . .E-2

DAC Bipolar Output Modes .E-9

DAC Unipolar Output Modes . .E- 10
Logic State of Status Register A; MUX (Bit 5). .E-11

Logic State of Status Register A; UB (Bit 6) .E-1 I

Control Register: Pacer Clock Source Selection .E-12

Control Register: Interrupt Level Selection

Bits4,5, and 6.. . . . . .I%13

Gain Selection/Burst Rate Register:

Gain Selection Bits 0 and 1 .E-16

Counter/Timer Address Map. .E- 18

82C54 Counterlrimer Control Register:

Selecting Functionality . . .E-24

82C54 Counter/Timer Control Register:

Bits 4 and 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . ..E-~

A-5
A-6
A-6

A-7
.C-6
.c-I

.c-9

.c-12

.C-13

.c-15
.c-21
.c-22

.c-23

4

4

ix

4

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4

Table E-12.
Table E-13.

Table E- 14.
Table E- 15.

Table E- 16.

82C54 Counterlrimer Control Register:

Readback Command .E-26

Counter Status Byte Selection: Bits 0, 1, and 2. .E-27

PPI Register Address Map. E-28

Mode Selection for Ports A and CH .E-30

PI0 Control Word. . .E-3 1

4

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This guide is for persons needing to understand the installation, interface
requirements, functions, and operation of the following products:

. The DAS-1601 and DAS-1602 boards, which are referred to

collectively as DAS- 1600 Series boards.

. The DAS-1401 and DAS-1402 boards, which are referred to

collectively as DAS-1400 Series boards.

Preface

Unless this manual refers specifically to a particular board, it refers to all
models collectively as the DAS-1600/1400 Series boards.

To follow the information and instructions contained in this manual, you
must be familiar with the operation of an IBMTM PC/XT or compatible in

the MS-DOS’ or WindowsTM environment. You must also be familiar
with data acquisition principles and their applications.

Manual Organization

Table 1 lists the topics that this guide focuses on and indicates where you
can find information about a topic.

Table 1. Finding Information

4

xi

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Table 1. Finding Information

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Related Documents

You can fiud more information on DAS-1600/1400 Series software and
accessories in the related documents listed in Table 2.

Table 2. Related Documents

DAS-1600/1400/1200 Series Function Call Driver User’s Guide

Document

MB Series User’s Guide

SSH-8 User’s Guide

I

4

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4

The DAS-1600/1400 Series is a family of high-performaucc analog and
digital I/O boards for IBM PC/XT, PC AT, and compatible computers.
The DAS-1601 and DAS-1401 are high-gain boards, while the DAS-1602
and DAS-1402 are low-gain boards.

This chapter describes the features of the DAS-1600/1400 Series boards,
the software that supports them, and available accessories.

4

Overview

4

Features

4

The features shared by the DAS-1600 Series and DAS-1400 Series are as

follows:
. Boards are switch-configurable for 16 single-ended or eight

differential analog input channels.

. Analog inputs are switch-configurable for either unipolar (O-10 V)

or bipolar (*lo V) signals.

. Analog input channels are individually programmed for gain. The

DAS-1601/1401 have programmable gaius of I, IO, 100, and 500.

The DAS-1602/1402 have programmable gains of 1, 2,4, and 8.

. Analog inputs are sampled at a maximum of 100 ksamples/s with

12-bit resolution.

. The base I/O address and Direct Memory Address (DMA) channel

are switch-configurable; interrupt levels are software-configurable.

4

l-l

4

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l

Burst mode sampling capability emulates simultaneous
sample-and-hold (SSH) operation,

. Analog-to-digital (A/D) conversions can be started through any of the

following methods:

-

software command

-

onboard pacer clock

-

external pacer clock

. External Simultaneous Sample-and-Hold (SSH) hardware is

supported.

. Data transfers can be performed by any of the following methods:

- program control

- interrupt service routines

- DMA transfer
. The boards perform g-bit data transfers on the ISA bus.
. A 3-channel programmable counter/timer (82C54) provides timing

for analog input operations or generation of output pulses at any rate
from to 1 pulse/hour to 100 kHz. The 82C54 counter/timer can also
be used to measure frequency, period, and pulse width.

. The boards have four unidirectional digital inputs and four

unidirectional digital outputs.

. The boards are backward compatible with the DAS-16Gl and

DAS-16G2 boards.
Programs for the DAS-16Gl and DAS-16G2 boards run on the

DAS-1600 Series without modification. The DAS-1400 Series

maintains backward compatibility with the analog input section of the

DAS16Gl.

I-2

Overview

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k

43

DAS-1600 Series boards provide the following additional features:
. Two 12.bit digital-to-analog converter (DAC) channels. The

outputs of these channels have switch-configurable output ranges of
O-5 V, O-10 V, *5 V, and&l0 V full scale. In addition, you can apply

an external reference to provide analog outputs in other ranges or to

use the DACs as programmable attenuators.

. Additional % bits of bidirectional digital I/O via the PI0 cable

connector (52). These 24 bits are configured as two B-bit ports and
two 4-bit ports that you can set independently for input or output.

The 24.bit digital port is compatible with the PIO-I2 board. You can
use these ports to gate the counter/timer, conuol multiplexers, and
read the status of external devices.

For more information on these features, refer to the functional description
in Chapter 2.

Supporting Software

The following software is available for operating DAS-1600/1400 Series
boards:

. DAS-1600/1400 Series standard software package -This package,

which comes with the board, is provided on U-inch and 5.25.inch

diskettes. The package includes function libraries for writing
application programs under DOS using Microsoft’ QuickBasic’rM,

Microsoft@ Professional Basic, or Microsoft’ Visual BasicTM for

DOS. The package also includes support files, example programs,
and the following utility programs:

- Configuration Utility -The configuration utility (CFG1600.EXE)

is a DOS-based program for creating or modifying a
DAS-1600/1400 Series configuration file.

1-3

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A configuration file contains the settings used by the
DAS-1600/1400/1200 Series Function Call Driver and other

driver software for configuring a board. For more information on
the configuration utility, refer to “Creating a Configuration File”
on page 3-6.

Calibration Utility - The calibration utility (CAL1600,EXE or
CAL1400.EXE) is a DOS-based program for calibrating the
analog I/O circuitry of DAS-1600/1400 Series boards, For more
information on the calibration utility, refer to Chapter 6.

- Confrol Panel - The Control Panel (CTL1600,EXE) is a
DOS-based stand-alone program. This tool provides access to all
DAS-1600/1400 Series board operations without programming.

The Control Panel provides a means of testing the board and your
application; it is also a means of performing simple applications
and saving data to a disk tile. Refer to Chapter 5 for more
information about the Control Panel.

- DAS-1600 External Driver - The External Driver
(DAS1600,EXE) for DAS-1600, DAS-1400, and DAS-1200
Series boards provides control and communication between data
acquisition and analysis packages and the boards.

DAS 1600.EXE executes as a terminate-and-stay-resident (TSR)

program that occupies a small amount of memory in the host.

. ASO- and ASO- -Advanced Software Option. This option

includes both Windows and DOS versions; both versions are supplied
on 3.5.inch and 5.25-inch diskettes. The ASO- and ASO­include function libraries for application programs that you write for
MS-DOS and Windows environments in the following languages:

- Microsoft and Borland’ C/C++

-

Borland Turbo Pascal@

- Microsoft Visual Basic for Windows

- Microsoft Quick@

- Microsoft Visual CHUM

1-4

Overview

irrn Page 5 Monday, June 6,1994 2:48 PM

Refer to the DAS-1600/1400/1200 Series Function Cull Driver User’s
Guide for more information.

The ASO- and ASO- software package also contains
miscellaneous support files, example programs, and the following:

Confgurution Utility - The configuration utility (CFG 1600.EXE)
is a program for creating or modifying a DAS-1600/1400 Series
configuration file.

A configuration file contains the settings used by the
DAS-1600/1400/1200 Series Function Call Driver and other
driver software for configuring a board. For more information on
the configuration utility, referto “Creating a Configuration File”
on page 3-6.

-

Calibration Utility - The calibration utility (CAL1600.EXF or
CAL1400.EXE) is a DOS-based program for calibrating the
analog I/O circuitry of the DAS-1600/1400 Series boards. For
more information on the calibration utility, refer to Chapter 6.

- Control Panel -The Control Panel is a stand-alone program
supplied in a DOS version (CTL1600,EXE) and a Windows
version (CTL1600W.EXE). This program provides access to all
DAS-1600/1400 Series operations without programming.

Control Panel operations include acquiring analog inputs,
controlling analog outputs, and controlling digital I/O. The
control panel provides a means of testing the board and your
application: it is also a means of performing simple applications
and saving data to a disk file.

The Windows version allows you to graphically represent up to
eight analog inputs and transfer acquired data to other Windows
applications through the Windows Dynamic Data Exchange
(DDE) feature. Refer to Chapter 5 for more information on the
Control Panel.

-

Port 110 software - If you are programming in the Windows
environment, you can use the Port I/O (PIO) software to program
DAS-1600/1400 Series boards at the register level using I/O

instructions. Refer to the PORTIO.TXT file for more information.

1-5

4

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VDAS-1600 - VisualDASTM Custom Controls for Visual Basic for
Windows. VisualDAS simplifies the setup of data acquisition
operations. The package includes a comprehensive user’s guide,

offers extensive online help, and furnishes software on 3.5-inch and

5.25-inch diskettes.

Dab acquisition and analysis application software VIEWDAC@,
EASYEST LX@, and EASYEST AGTM are integrated software
packages available for DAS-1600/1400 Series boards, Programming
tools, such as ASYST@ scientific and engineering programming

Ianguage, are also available to help you in writing your application
programs.

Note: If you use VIEWDAC, EASYEST LX, EASYEST AG, or

ASYST to program your DAS-1600/1400 Series board, you must use
the DAS-1600 External Driver. This driver is included in the

DAS-1600/1400 Series standard software package and is described in

Appendix C.

4

Other data acquisition and analysis packages include the following:

- SNAP-MASTER - Data acquisition and analysis package from

H.E.M. Data Corporation (only available for Windows).

- NOTEBOOKhJOTEBOOKpro Menu-driven data acquisition

and analysis from Laboratory Technologies Corporation
(available for both DOS and Windows).

- STREAMER Menu-driven data acquisition software for

high-speed transfers of DAS-1600/1400 Series data to a hard disk
(only available for DOS).

l-6

Overview

& ! hapOlLkm

Accessories

Page 7 Monday, June 6, 1994 2:48 PM

The following accessories are available for use with the DAS-1600/1400
Series boards.

STA-16 - Screw terminal adapter accessory. You can use this

.

accessory to connect signals from the main I/O connector (Jl) to
screw terminals.

STA-U - Universal screw terminal accessory. You can use this

.

accessory to connect signals from the PI0 cable connector (52) to
screw terminals,

STC-37 - Direct DAS-1600/1400 Series board to screw terminal

.

interface.

STP-37 - Screw terminal panel with a 37.pin D-type connector.

.

4

NO-4 -4-channel isolated expansion multiplexer.

.

SSH-4/A 4-channel simultaneous sample-and-hold accessory.

.

SSH-8 S-channel simultaneous sample-and-hold accessory.

.

MB Series modules and backplanes -Plug-in, isolated,

.

signal-conditioning modules and the backplanes that hold them.

.

EXP-16 and EXP-16/A 16-channel expansion multiplexer and

signal conditioning boards; requires the S- 1600 cable and the

PG-408A option.

.

EXP-GP - S-channel signal conditioning board with Wheatatone

bridge and RTD interface; requires the S-1600 cable.

1-7

hap0lLfrm Page 8 Monday, June 6, 1994 2:48 PM

I

4

hap02-.frm

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Functional Description

This chapter describes the following features of DAS-1600/1400 Series
boards:

. Analog input features

l

Analog output features

. Digital I/O features

2

. 82C54 counter/timer features

l

Wait state selection

s Power

These descriptions are offered to familiarize you with the operating
options and to enable you to make the best use of your board. The block
diagram in Figure 2-1 represents both the DAS-1600 and DAS-1400

Series boards.

2-1

hap02Lfrm Page 2 Monday, June 6, 1994 2:48 PM

/ DASl6WSerlesonly /

i ,. ,.

DASlGW Series only

interval timer

2-2

ISA PC AT, PWT BIJS

Figure 2-1. Functional Block Diagram

Functional Description

hap02-.frm Page 3 Monday, June 6,1994 2:48 PM

Analog input Features

The analog input section of a DAS-1600/1400 Series board multiplexes

all the active input channels (up to 16 single-ended or eight differential)
down to a single, 12-bit sampling analog-to-digital converter (ADC).

Other features of this section include input configurations, gain selection,
conversion modes, triggers, clock sources, and data transfer modes. These

features are described in the following sections.

Differential/Single-Ended Selection

Using configuration switches, you can select either eight differential or 16
single-ended inputs. Differential inputs measure the difference between
two signals. Single-ended inputs are referred to a common ground.

Generally, you want to use differential inputs for low-level signals whose
noise component is a significant part of the signal or for signals that have
non-ground common mode. You want to use single-ended inputs for
high-level signals whose noise component is not significant.

The specific level at which input configurations work best is dependent

upon the application. However, you generally use differential inputs for
voltage ranges of 100 mV and less.

UnipolarlBipolar Selection

Using configuration switches, you can set the DAS-1600/1400 Series
boards to operate in either unipolar or bipolar input mode. A unipolar
signal is always positive (0 to 10 V, for example), while a bipolar signal
can swing up and down between negative and positive peak values (-10 V
to +lO V, for example).

The DAS-160011400 Series boards use left-justified, offset binary to
represent signals. In a given input range with the same peak-voltage
capacity for both modes, unipolar mode doubles the converter’s
resolution.

4

2-3

4 4

.frm Page 4 Monday, June 6, 1994 2:48 PM

Channel Selection in Expanded Configurations

As previously mentioned, the DAS-1600/1400 Series supports 16
single-ended or eight differential analog input channels. If you require
additional analog input channels or signal conditioning for transducer
inputs, you can use any combination of up to eight 16.channel EXI-16 or
EXP-16/A expansion boards, and/or eight X-channel EXP-GP expansion
boards to increase the number of available channels to 128.

When you daisy-chain expansion boards from the analog inputs, it is
recommended that the first expansion board multiplex onboard channel 0,
the next expansion board multiplex channel 1, and so on. Selection of an
onboard channel is

You can access any unused onboard channels by including an STA-16
screw terminal accessory in the daisy-chain configuration. Figure 2-2
illustrates how expansion boards and accessories interface with the analog
channels of DAS-1600/1400 Series boards.

made

via jumper settings on the expansion board.

-@-

-

2-4

DAS-1600/1400
Series Soards

Figure 2-Z. Expanding the Analog Inputs of DAS-1600/1400 Series Boards

Functional Description

hap02Lfrm

Gain Selection

Page 5 Monday, June 6,1994 2:48 PM

You can also use up to four MB02 backplanes to increase the number of
available channels to 64 isolated or 12 non-isolated. For more information
about connecting channel expansion boards, refer to Chapter 4.

Notes: You must specify a single-ended iuput configuration for all
onboard channels associated with channels on MB02 backplanes.

If you are using EXP-16, EXP-16/A, or EXP-GP expansion accessories or
MB Series backplanes, the digital output lines of the DAS-1600/1400
Series board select a particular channel on the expansion board or
backplane to read.

The programmable gain that you select is applied to an incoming signal as
a multiplication factor; gain allows you to amplify a signal to a range that
the ADC can accurately measure.

For example, if the ADC handles signals in the f10 V range and you want
to measure a signal in the range of 311.0 V, you would use a gain of 10 to
amplify the signal to the f10 V range. Similarly, if you wanted to measure
a sigual that was already in the f10 V range, you would select a gain of 1.

The available gains, lheir corresponding input ranges, and throughput
rates are listed in Table 2-1 for the DAS-1601/1401 and Table 2-2 for the
DAS-1602/1402.

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4 I hap02Lfrm

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Table 2-1. DAS-1601/1401 Gains, Ranges, and Throughput

Rates for Unipolar and Bipolar Selections

Gain Unipolar Range

Bipolar Range

Maximum

Throughput

Rate

100 ksamples/s

500

Table 2-2. DAS-1602/1402 Gains, Ranges, and Throughput

Gain

Conversion Modes

DAS-1600/1400 Series boards support the following conversion modes:
. Paced mode - Paced mode is the default data conversion mode and is

the mode best-suited for continuous scanning of multiple channels at
a constant rate. In paced mode, the conversion rate equals the pacer
clock rate. The sample rate, which is the rate at which a single
channel is sampled, is the pacer clock rate divided by the number of
channels being sampled.

0.0 to +20 mv

-20 to +20 mv 30 ksmplesls

Rates for Unipolar and Bipolar Selections

Maximum

Unipolar Range Bipolar Range

Throughput

Rate

2-6

Functional Description

.frm Page 7 Monday, June 6,1994 2:48 PM

. Burst mode - In burst mode, each pulse from the pacer clock begins a

scan of one to sixteen channels. The conversion rate during a burst
mode scan is equal to the rate of the burst mode conversion clock.
The sample rate, which is the rate at which a single channel is
sampled, is equal to the pacer clock rate.

DAS-1600/1400 Series software allows you to program the pacer
clock to adjust the interval between burst mode scans. This software

also allows you to adjust the burst mode conversion rate. The burst
mode conversion clock frequency is programmable for a range of

3.94 kHz to 100 kHz.

Burst mode can also be used for pseudo-simultaneous

sample-and-hold in conjunction with DMA or interrupt operations.
The sample rate (pacer clock rate) should be set for no more than the

burst mode conversion clock rate divided by the number of channels
in the burst. The maximum burst mode conversion clock rate is
gain-sensitive, as shown in Table 2-1 and Table 2-2.

Figure 2-3 shows the timing relationships of the paced and burst modes
for analog input channel 4 to channel 7.

Pacer Clock
Paced Mode Convemkms
Burst Mode Convenlona

Burst Mode ConversIon Clock

Figure 2-3. Timing Relationships of Conversion Modes

CM
cl,4 cl,5 ch6 ch7

r-i nrLrln

1

Ch5
cl,4 CM ch6 cl,7

L

2-7

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Clock Sources

The following clock sources are available for conversions on
DAS-1600/1400 Series boards:

. Software - DAS-1600/1400 Series boards allow you to acquire single

or multiple samples under program control.

. Hardware (internal clock source) - The internal pacer clock is

derived from the onboard UC54 counter/timer and a
switch-configurable, crystal-controlled 1 MHz or 10 MHz timebase.
The pacer clock uses two cascaded counters of the 82C54. The
maximum allowable rate is 100 ksamples/s, and the minimum
conversions per hour is determined as follows:

4

4

1OMHz

232

~ = 2.328 x 10-3= 8.38

When not used to pace the analog input, the internal clock source can

pace other events, such as digital I/O and analog outputs (on the

DAS-1600 Series boards), through the use of intermpts.

. Hardware (external clock source) -The external pacer clock source

must be an externally applied, TTL-compatible, rising-edge signal
attached to the IPO/TRIG O/KPCLK pin (25) of the main I/O
connector (Jl).

An external clock source is useful if you want to pace at rates not
available with the 82C54 counter/timer, if you want to pact at uneven
intervals, or if you want to pace on the basis of an external event. An
external clock also allows you to synchronize multiple boards with a
common timing source.

IMHZ

~

232

= 2.328x

10m4=

0.838

4

4

Functional Description

I@

hap02Lfrm

Triggers

Page 9 Monday, June 6,1994 2:48 PM

Notes: The ADC acquires samples at amaximnm of 100 ksamples/s (one
sample every 10.0 ps). If you are using an external clock, make sure that
it does not initiate conversions at a faster rate than the ADC can handle.

If you are acquiring samples from multiple channels, the maximum
sampling rate for each channel is equal to 100 ksamples/s divided by the
number of channels.

A trigger starts an analog input operation. The polarity of external triggers
in the DAS-1600/1400 Series boards is software-cotlfigurable, You can
use one of the following trigger sources to start an analog input operation:

. Internal - When you enable the analog input operation, conversions

begin immediately.

. External Analog -While an analog trigger is not a hardware feature

of the DAS-1600/1400 Series boards, you can program an analog
trigger using one of the analog input channels as the trigger channel.
The DAS-1600/1400/1200 Series Function Call Driver provides
functions for an analog trigger; refer to the DAS-1600/1400/1200
Series Function Call Driver User’s Guide for more information.

l

External Digital - While a digital trigger is not a hardware feature of
the DAS-1600/1400 Series boards, you can program a digital trigger

using one of the digital input channels as the trigger channel. The
DAS-1600/1400/1200 Series Function Call Driver provides functions
for a digital trigger; refer to the DAS-1600/1400/1200 Series Function
Call Driver User’s Guide for more information,

Connect the digital trigger to the digital input IPl/XTRIG pin (6) of
the main I/O connector (Jl). Trigger types are as follows:

- Positive-edge trigger - Conversions begin on the rising edge of
the trigger signal.

-

Negative-edge trigger - Conversions begin on the falling edge of

the trigger signal.

4

2-9

4 4

.frm Page 10 Monday, June 6,1994 2:48 PM

Positive-level trigger - Conversions begin when the signal is
above a positive level. See Table A-3 on page A-5 for logic
levels.

- Negative-level trigger - Conversions begin when the signal is
below a negative level. See Table A-3 on page A-5 for logic
levels.

Data Transfer Modes

You can transfer data from the DAS-1600/1400 Series boards to the
computer using the following data transfer modes:

Single mode - In a single-mode operation, a data acquisition board
acquires a single sample from a single channel: you cannot perform
any other operation until the single-mode operation is complete.

Synchronous - In a synchronous-mode operation, a data acquisition
board acquires one or more samples from one or more channels; you

cannot perform any other operation until the synchronous-mode

operation is complete.
Interrupt You can program the board to acquire data, then generate

an interrupt when data is available for transfer. Wheo interrupt mode

is used, data is transferred by an interrupt service routine; you can
perform other operations while an interrupt mode operation is in
progress. The interrupt level is software-configurable.

Unpredictable interrupt latencies in the Windows environment tend to
make maximum board speeds unachievable in the interrupt mode.

When in the Windows environment, you are advised to use DMA

mode instead of interrupt mode.

DMA - DMA is a method of bypassing the CPU to transfer data

directly between an I/O device and computer memory. In the IBM PC

family, DMA is directed by the DMA controller and executes

independently while the CPU is executing other instructions.
Therefore, you can perform other operations while a DMA mode

operation is in progress. The ability to run independently of the CPU

and at high-transfer rates makes DMA an attractive method for

transferring data in data acquisition systems.

2-l 0 Functional Description

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I

+b

DAS-1600/1400 Series boards can use either DMA channel I or 3 to

perform single-cycle DMA transfers of A/D data from the board to

memory.

Generally, if you are programming an operation in the Windows

Enhanced Mode, you should use DMA to acquire data reliably at
maximum board speeds.

Analog Output Features (DAS-1600 Series Only)

The analog output section of DAS-1600 Series boards consists of two

digital-to-analog converters (DACs) with 12-bit resolution and a
precision voltage source. Both DACs have switch-configurable output
ranges of O-5 V, O-10 V, f5 V, f10 V. In addition, you can use external
references to generate analog outputs in other ranges. The DACs power

up to 0 V at reset.

+

The two DACs have a capacitive load~.drive up to 100 pF and an output
current drive of up to ?;5 mA.

You can pace the analog output with interrupts generated by the onboard

pacer clock when the analog inputs are disabled.

You can write single values to the DACs using synchronous mode 01

single mode. You can write multiple values to the DACs using

synchronous mode or interrnpt mode.

The DAS-1600 Series provides a -5 V (fO.05 V) precision reference

voltage that is derived from the DAC reference voltage. Typical

applications for precision voltages are providing a DC reference input for

the DACs and providing offsets and bridge excitation to user-supplied

input circuits.

2-11

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Digital I/O Features

DAS-1600/1400 Series boards contain four digital inputs (IPO to IP3) and
four digital outputs (OPO to OP3) that are accessible through the main I/O
connector (Jl).

Logic I on an I/O Line indicates that the input/output is high; logic 0 on an
I/O line indicates that the input/output is low (see Table A-3 on page A-5
for logic levels). The digital inputs are compatible with TTL-level signals,
These inputs are provided with 10 kQ pull-up resistors to +5 V, therefore,
the inputs appear high (logic I) with no signal connected.

The DAS-1600 Series boards have an additional 24 bits of bidirectional
digital I/O available on the PI0 cable connector (J2). These 24 bits are
configured as two X-bit ports (A and B) and two 4-bit ports (CL and CH);
you can set each port independently for input or output.

4

4

You can use the digital inputs and outputs for any general-purpose tasks
except the following:

. If you are using an external digital trigger or gate, you must use

digital input line IPl/XTRIG to attach the trigger and digital input
line IP2/CTR 0 GATE to attach the counter 0 gate signal. In either of
these cases, you cannot use the corresponding bit for general-purpose
digital input.

. If you are using an external pacer clock, you must use digital input

line IPODRIG O/XPCLK to attach the external pacer clock signal: in
this case, you cannot use IPO/TRIG O/XPCLK for general-purpose
digital input.

When the analog inputs are disabled, you can pace the digital I/O with
interrupts generated by the onboard pacer clock.

You can read and write a single value from and to a DAS-1600/1400
Series board using synchronous mode or single mode. You can read and
write multiple values from and to a DAS-1600/1400 Series board using
synchronous mode or interrupt mode.

4

z-12 Functional Description

hap02-.frm Page 13 Monday, June 6, 1994 2:4X PM

43

Counter/Timer Features

The DAS-1600/1400 Series includes an 82C54 with three programmable
counters. Counters 1 and 2 are permanently cascaded and are used as the
internal A/D pacer clock.

Counter 0 is not used by the board, but can be used for functions such as

waveform generation, measuring frequency and period, and generating
time delays. You access counter 0 functions through the board’s l/O

registers or through the Function Call Driver.

Note: Attempts to combine register-level programming of counter/timer

functions with Function Call Driver programming can produce

unexpected results because the Function Call Driver relies on structures it

sets up.

4+

You can use software to select IPO/TRIG O/XPCLK (pin 25) of the main

I/O connector for use as a hardware gate. The gate provides a means of

holding off clock pulses (from counteis 1 and 2) to the ADC until

IPO/TRIG O/XPCLK goes high.

2-13

hap02-.frm

43

Page 14 Monday, June 6, 1994 2:48 PM

Wait State Selection

Although most current-generation PCs and compatibles extend bus cycles

during S-bit data transfers, the DAS-1600/1400 Series provides a

switch-configurable option that allows you to enable or disable wait states

that extend bus cycles during 8-bit data transfers.

Inclusion of this option maintains backward compatibility with

DAS- 16Gx Series boards that may be used in early generation machines.

Power

+5 V power is available from tbe main I/O connector. The +5 V supply is

brought out from your host computer.

2-14

Functional Description

.frm Page 1 Tuesday, June 7,1994 3:lO PM

Setup and Installation

This chapter describes inspection, software installation, configuration,

and hardware installation for DAS-1600/1400 Series boards.

Read this chapter before you attempt to install and use your

DAS-1600/1400 Series board.

Inspecting Your Package

3

4

Caution: A discharge of static electricity from your hands can seriously

damage certain electrical components on any circuit board. Before

handling any board, discharge static electricity from yourself by touching

a grounded conductor such as your computer chassis (your computer must

be turned off). Whenever you handle a board, hold it by the edges and

avoid touching any board components, cable connectors, or gold-plated

edge connectors.

Use the following procedure to unwrap and inspect a DAS-1600/1400

Series board:

1. Factory packaging of the DAS-1600/1400 Series boards includes a
final wrap of protective, anti-static material. Remove the board from
its anti-static wrapping material. You may wish to store the wrapping
material for possible future use.

2. Inspect the board for signs of damage. If damage is apparent,
arrange to return the board to the factory (see “Technical Support”
on page 7-6).

3-I

4

hap03Lfrm Page 2 Monday, June 6,1994 2:49 PM

!

4

3. Check the remaining contents of your package against the packing list

to be sure your order is complete. Report any missing items
immediately.

4. When you are satisfied with the inspection, proceed with the software
and hardware setup instructions.

4

Note:

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

Data acquisition products are factory calibraled; they require no

lnstallina the Software Package

This section provides installation procedures for the DAS- 1600/1400
Series standard software package and the ASO- and ASO­software package. Before you work with the software from any package,
make a copy of all diskettes in the package. Use the copies as your

working diskettes, and store the originals as backup diskettes.

Installing the DAS-1600/1400 Series Standard Software

The DAS-1600/1400 Series standard software package is for the DOS
environment only. Use the following procedure to install this package:

1. Insert diskette #l into an appropriate floppy-disk drive of your
computer,

4

4

3-2

2. Change to the drive containing the diskette and enter the following at
the DOS prompt:

INSTALL

3. Respond to the installation program prompts.

4. When the installation program requests a designation for the drive

that is to receive your software, enter a designation of your choosing
or defer to the default designation of C.

Setup and Installation

4

hap03_.frtn

Page 3 Monday, June 6, 1994 2:49 PM

5. When the installation program requests a name for the directory that
is to receive the software, enter a name of your choosing or accept the

default name.
The installation program automatically creates a hierarchical

directory tree on the specified drive and then copies all files,

expanding any compressed files, to the new directory.

6. Insert any additional disks, as required by the installation program.

The installation program notifies you when it completes the installation.
After the installation, you may want to review the following files:

l

README.TXT - An ASCII text file containing information
available after the publication of this manual.

l

EXAMPLEKTXT - An ASCII text file containing notes and tips on

how to successfully compile and execute the supplied example
programs.

l

FILESTXT - An ASCII text file that lists and describes all the files

that can be installed.

Installing the ASO- and ASO- Advanced Software
Option

The ASO- and ASO- advanced software option contains
software for both the DOS and Windows environments. This section
contains procedures for installing both versions.

DOS lnsfallation

Use the following procedure to install the DOS version of the ASO­and ASO- software package:

1. Insert diskette #l into an appropriate floppy-disk drive of your
computer.

3-3

hap03-.frm Page 4 Monday, June 6,1994 2:49 PM

2. Change to the drive containing the diskette and enter the following at
the DOS prompt:

INSTALL

3. Respond to the installation program prompts.

4. When the installation program requests a designation for the drive
that is to receive your software, enter a designation of your choosing
or defer to the default designation of C.

5. When the installation program requests a name for the directory that
is to receive the software, enter a name of your choosing or accept the
default name.

The installation program automatically creates a hierarchical
directory tree on the specified drive and then copies all files,

expanding any compressed files, to the new directory.

6. Insert any additional disks, as required by the installation program.

The installation program notifies you when it completes the installation.
After the installation, you may want to review the following files:

. README.TXT - An ASCII text file containing information

available after the publication of this manual.

. EXAMPLESTXT - An ASCII text file containing notes and tips on

how to successfully compile and execute the supplied example
programs.

l

FILES.TXT - An ASCII text file that lists and describes all the files

that can be installed.

Windows Installation

Use the following procedure to install the Windows portion of the
ASO- and ASO- software package:

1. Insert diskette #l into an appropriate floppy-disk drive of your
computer.

3-4

2. Enter the Windows environment,

Setup and Installation

hap03-.frm Page 5 Monday, June 6, 1994 2:49 PM

+b

3. From the Program Manager Pile menu, select Run.

4. In the Command Line text box, type the letter of the drive containing
your Windows diskette and follow with
diskette is in drive B, type the following:

B : SETUP

5. Select OK.

6. Respond to the installation program prompts.

7. When the installation program requests a designation for the drive
that is to receive your software, enter a designation of your choosing
or defer to the default designation of C.

8. When the installation program requests a name for the directory that

is to receive the software, enter a name of your choosing or accept the

default name.

SETUP.

For example, if your

The installation program automatically creates a hierarchical

directory tree on the specified drive and then copies all files,

expanding any compressed files, to the new directory.
The installation program also creates a DAS- 1600 program manager

group containing icons for all DAS-1600 programs and information

tiles.

9. Insert any additional disks, as required by the installation program

The installation program notifies you when it completes the installation.
After the installation, you may want to review the following files:

l

README.TXT - An ASCII text file containing information
available after the publication of this manual.

l

EXAMPLES.TXT - An ASCII text file containing notes and tips on
how to successfully compile and execute the supplied example
programs.

l

FILESTXT - An ASCII text file that lists and describes all the files
that can be installed.

3-5

hap03Lfrm Page 6 Monday, June 6, 1994 2:49 PM

+b

Creatinn a Configuration File

The configuration Ile contains a list of the configuration options and a
setting for each. The file is used by application packages such as
VIEWDAC and EASYEST LX as well as programs wrilten using the
Function Call Driver. When you set up software to operate your
DAS-1600/1400 Series board, you specify the name of the configuration
file.

The switch-configurable options that you enter into the configuration file
are also used to create a graphic representation that you can use as a
reference when you set up switches on your board. Setting
switch-configurable options is discussed under “Setting
Switch-Configurable Options” on page 3-14.

The configuration file you specify can be either the default configuration
file for the board you are installing or a file you create with the
configuration utility. The following sections describe the default
configuration file and the configuration utility.

Default Configuration File

A default configuration tile called DAS1600.CFG is provided in both the
DAS-1600/1400 Series standard software package and the ASO-I 600 and

ASO- software package. The default configuration file contains an
ASCII list of the configuration options that apply to a DAS-1602 board.

Table 3-l lists the configuration options and their default settings.

3-6

Setup and Installation

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!

4+

Table 3-1. Default Configuration File Settings

Port A

If the default settings meet the needs of your application, refer to Figure
3-1 on page 3-14 to visually verify the default switch-configurable
options and then go on to “Installing the Board” on page 3-18. If you have
to change the default configuration file settings, refer to the next
subsection.

3-7

hap03-.frm Page 8 Monday, June 6,1994 249 PM

43

Configuration Utility

The configuration utility, CFG1600,EXE. is furnished in both the
DAS-1600/1400 Series standard software package and the ASO- and
ASO- software package. This utility enables you to modify an
existing configuration file or to create a new configuration file for up to
two boards. To modify or create a configuration file, use the following
procedure:

1. Start the configuration utility from DOS or Windows as follows:

-

From DOS, change to the directory containing CFG1600.EXE
and enter the following at the DOS prompt:

CFG1600

where the optional <filename> is the name of the configuration
file you want to modify or create. If the file is not located in your
default directory, include its full pathname.

-

From Windows, select Run from the Program Manager File menu.
Enter the following in the Command Line dialog box, and select,

OK.

path

where path is the complete path to CFG 1600.EXE and the

optional <filename> is the name of the configuration tile you

wish to modify or create. If tbe file is not located in your default

directory, include its full pathname.

Whetherfilename is an existing file in the directory containing
CFG1600,EXE or a file to be created, it is the name displayed by the
configuration utility’s opening screen. However, the settings
displayed forfilenume may differ as follows:

Iffilename is an existing file, the configuration utility displays

the settings contained in this existing file.

<filename>

CFG1600

<filename>

3-8

Iffilename is a file to be created, the configuration utility displays

the default configuration settings.

Setup and Installation

f& b hap03-.frm Page 9 Monday, June 6.1994 2:49 PM

If no entry was made forfilename, the configuration utility
displays the default configuration file DAS 1600.CFG.

Note:

If you alter the default configuration file, you should rename il
and then create a new default configuration file by starting the
configuration utility with nofilename and saving the results without

change.

2. In the opening screen, enter the number of boards you plan to
configure (1 or 2).

After you make this entry, the utility program displays the
configuration witldow for the first board (board 0, which is shown in
the upper-left corner of the window). The window contains the
following configuration options:

-

Board name -This option identifies the board you are installing.

You can select one of the following:

DAS-1601 DAS-1401 DAS-1201
DAS-1602 DAS-1402 DAS-1202

-

Ease

address

-This option requires selection of a 3-digit
hexadecimal address, The addresses you can select range from
200h to 3FOh. Base addresses presented for selection begin on
even boundaries that increment by 16 (OOFh).

When selecting a base address, do not select an address that

conflicts with those already in use. Table 3-2 lists standard
address assignments and their corresponding devices.

3-9

hap03Lfrm

Page 10 Monday, June 6,1994 2:49 PM

Table 3-2. Standard Address Assignments

1 Addresses

100 1FF Undecoded

210 - 217 Expansion unit 390 - 39F Available

,..... ..,..,..

;::++ .I. :..::;:.:.:

1:1:::‘r’1~1~~~~~ ~~~~~~~~~~~~~~‘::~~~Ei ~~~~~~~I:.‘:‘::
~:i’:li.:i’i;i:ii:iii-iiiii:i:‘:‘:i :“:i~:l:‘:~::::.::~::i:.:i:‘::‘:’::’:::”’~.:.:.:.: :.: ~~..~~.~.~..~~..~~.~.~.~.~..~.~,

220 24F Reserved

1 Device 1 Address 1 Device

380 - 389’

,. ,,-,, ,,

.,..

3AA - 3AF Available

Binary comm. 2

.:.:.,.:, .:, .: ..,..,. ,:.

I

3-10

Notes

’ These addresses are slightly different in the IBM PC AT.

- Clock Select - This option is a choice between a 1 MHz or
10 MHz clock.

- Wait State This option is a choice between yes and no.

-

A/D

mode - This option

is

a choice between bipolar and unipolar.

- A/D co& - This option is a choice between differential and

single-ended.

-

D/A 0

Mode - This option applies

to DAS-1600 Series boards

only. This option is a choice between bipolar and unipolar.

Setup and Installation

hap03 .frm Page 11 Monday, June 6,1994 2:49 PM

44 -

- D/A 1 Mode -This option applies to DAS-1600 Series boards
only. This option is a choice between bipolar and unipolar.

DMA channel -This option is a choice between DMA channels 3

and 1.

-

IRQ level This option selects an interrupt level from 2 through

7. Table 3-3 lists the standard interrupt request assignments.

Table 3-3. Standard interrupt Request (IRQ) Assignments

Interrupt Level

IRQ2 1 Reserved (XT), IRQ 8 to 15 (AT)

4

4

IRQ6

-

Digital CFG - This option applies to DAS-1600 Series boards
only. The option displays a menu that allows you to select either
input or output for the digital ports A, B, CL, and CH.

Number EXf-16s - This option specifies the number of EXP-16

and EXP-16/A expansion multiplexer/amplifiers that you are
going to install. You can select from 0 to 8 EXF16s. When a
value other than 0 is selected, the EXP-16 Gains option is
applicable.

- EXP-I6 Gains - This option specifies the switch-configurable
gain that you set for each channel of the EXP-16s you are
installing in your system.

Refer to the EXP-16 & EXP-161A Expansion
Multiplexer/Amplifier System User:r Guide for more information.

Floppy

disk

4

4

4

3-11

4

frm Page 12 Monday, June 6,1994 2:49 PM

Number EXP-GPs This option specifies the number of EXP-GP
general-purpose multiplexer and signal conditioning modules that
you are going to install. You can select from 0 to 8 EXP-GPs.
When a value other than 0 is selected, the EXP-Cl’ Gains option

is applicable.

EXP-GP Gains -This option displays two menus. The first menu

selects the switch-configurable gain multiplier that you set up for
all EXP-GP channels. The factors you can choose from are Xl or
x2.5.

The second level menu selects the switch-configurable gain
factor you are setting for each individual channel of the EXP-GP
boards you are installing in your system.

Refer to the EXP-GP Signal Conditioning Multiplexer lJser’.r
Guide for more information,

CJK Channel - If your application uses thermocouples, it is
suggested that you use the cold-junction compensation (UC)
circuit of the EXP-GP; this option selects the channel that you are
connecting the CJC sensor to.

3-I 2

Number of SSHs - This option specifies the number of
simultaneous sample-and-hold boards that you are installing in
your system. You can select a maximum of four when you are

installing SSH-4/A boards and a maximum of two when
installing SSH-8 boards.

SSH Type - This option is a choice between SSH-4/A and SSH-8
simultaneous sample-and-hold boards.

Warning:

When you select SSH-8 as an SSH Type, you must select a

10 MHz clock (in the Clock Select option). Selecting a 1 MHz clock
for use with an SSH-8 causes the Function Call Driver and the
DAS-1600 External Driver to report an error (28714) and terminate.

Setup and Installation

.frm Page 13 Monday, June 6,1994 2:49 PM

- SSH Gains - This option specifies the switch-configurable gains
that you set up for each channel of your SSH-4/A or SSH-8.

SSH 4/A Mode - This option is a choice. between master and slave

modes.

- SSH Timing -This option is a choice between internal and

external.

Refer to the SSH-4A User’s Guide or SSH-8 User’s Guide for more
information.

- AID Gain - Not applicable to DAS-1600/1400 Series boards.

3. To change the setting for a configuration option, use the arrow keys to
highlight the option and press t~nterl to display a list of option
settings. Use the arrow keys to highlight the required setting and then
press [inter] to select the setting. These instructions are
summarized in the Commands/Status box at the bottom of the screen.

4. When you complete your selections for a board, you can view a
graphic representation of the switch positions that correspond to the
options you have selected by pressing

[SI

for “Show Switches”.

You can use this graphic representation to set up and verify the
switch-configurable options that you have selected. If you have any
questions or require additional information, refer to “Setting
Switch-Configurable Options” on page 3- 14.

5. If you are configuring more than one board, press

[Nl

for “Next

Board” to display the menu box for the next board.

6. When you complete the changes for all boards, press [ESC]

7. The configuration utility asks whether to save the changes. Press

fOrpsor [NI fOrno.

[YI

3-13

hap03-.frm Page 14 Monday, June 6,1994 2:49 PM

4

Setting Switch-Configurable Options

This section contains information and.illustrations that you can use to
verify default switch configurations and reconfigure switch-configurable
options. Chapters 1 and 2 contain information about product features that
help you determine the board configuration that best suits the needs of
your application.

If you are using a board configuration other than the default, you most
generate a configuration file with the configuration utility. You can use
the utility’s [show switches1 command to generate a graphic
representation of switch positions for the options you have selected.

Figure 3-1 shows the switches for DAS-1600 Series boards; Figure 3-2
shows the switches for the DAS-1400 Series boards. The remaining
subsections describe the switches and how to configure them.

4

4

3-14

Figure 3-1. Default Switch Configuration for DAS-1600 Series Boards

Setup

and Installation

4

4

+b

hap03 .frm Page 15 Monday, June 6,1994 2:49 PM

4L -

Figure 3-2. Default Switch Configuration for DAS-1400 Series Boards

4

TP 1 TP2

location of TP2 on
boards prior 10 rev C

-0

4

Setting the DAC BipolarNnipolar Switch

(DAS-1600 Series Only)

Switch Sl is a 2-position switch that sets DAC 0 and DAC 1 for unipolar
(UNI) or bipolar (BE’) mode. The left switch (labeled 0) is for DAC 0; the
right switch (labeled 1) is for DAC 1. Switch either section On for bipolar
or Off for unipolar. The default is bipolar.

Setting the DACO and DACl Reference Voltage Switches

(DAS-1600 Series Only)

Switches S2 and S3 are 3-position switches olfering 10,5, and U
selections. When you set up a DAC for bipolar (SIP), the 5 and IO
positions select f5 V and fl0 V, respectively. When you set up a DAC for
unipolar, the 5 and 10 positions output 0 - 5 V and 0 - 10 V, respectively.

4

3-15

4

(4

hap03 .frm Page 16 Monday, June 6,1994 2:49 PM

44 -

The U position on both switches selects the external reference voltage that
you connect to D/A 0 REF IN (pin 10) and D/A 1 REF IN (pin 26). The

default setting selects a +5 V reference signal for both DAC 0 and DAC 1.

For additional information on user-supplied reference voltages, set Vin

definitions given in Table E-2 and Table E-3.

Setting the ADC BipolaWnipolar Switch

Switch S4 (S2 on the DAS-1400 Series) is a 2.position switch that sets
A/D operation to bipolar (BIP) or unipolar (UNI) mode. The default
setting is bipolar (BIP).

Setting the Chan 6116 Switch

Switch S5 on the DAS-1600 Series board (or switch Sl on the DAS-1400
Series board) is a 2-position switch that configures the A/D inputs as eight
differential or 16 single-ended inputs. The default setting is eight
differential inputs.

4

Setting an Alternate Base Address

Switch S6 (S3 on the DAS-1400 Series) is a single, X-position DIP switch
that accommodates the base address, the clock select, and the wait state
enable parameters. The default base address setting is 300h (786
decimal).

Figure 3-3 shows the default switch positions for the base address, clock
select, and wait state enable switches.

3-16

4

Setup and Installation

4 4

.frm Page 17 Monday, June 6,1994 2:49 PM

4

4

Af!%F

Ii:
29
it

Note that a switch in the ON
position outputs a logic 0.

Figure 3-3. Base Address, Clock Select, and Wait State Enable Switch

HtX

Vallle

10

too

200

The base address is read from the S-position DIP switch located as shown

in Figure 3-1 for aDAS- Series board and Figure 3-2 for a
DAS-1400 Series board. The base address switch on DAS-1600/1400
Series boards is preset at the factory for a hexadecimal value of30011 (768
decimal). If this address conflicts with the address of another device in the
computer (including another DAS-1600/1400 Series board), you must
reconfigure the base address switch.

Decimal

VdUe

128

::;

987654CW

BASE ADORESS

CLK SEL On = 1 MHz

Off=lOMHz

WAITEN O” = No

Off = Yes

4

To

reconfigure this switch for anolher address, perform the following

steps:

1. Select an alternate address that does not conflict with another
installed device. See Table 3-2 on page 3-10.

2. Use the configuration utility to create a new configuration file and
view the corresponding switch settings in the menu-box diagram (see
“Creating a Configuration File” on page 3-6).

3. Set up the base address switch to match the settings in the menu-box
diagram.

Note:

shown by the switch diagram in tbe menu box of the configuration utility.

The settings for the base-address switch must match the settings

3-17

hap03-.frm

+b

Page 18 Monday, June 6, 1994 2:49 PM

Setting the Clock Select Switch

Position number 7 of the base address switch (see Figure 3-3) selects
either a I MHz or 10 MHz clock for the internal pacer clock. The default
is 10 MHz (Off).

Setting the Wait State Enable Switch

Position number 8 of the base address switch (see Figure 3-3) enables
wait states. The default setting is NO (On). If you experience intermittent
errors, you may correct the problem by setting this option to YES (Off).

Setting the DMA Channel Select Switch

Switch S7 (S4 on the DAS-1400 Series) is a Z-position slide switch that
selects DMA channel 1 or 3. The default setting is 3.

Installing the Board

Caution:

your computer.

After reviewing your computer manufacturer’s documentation for
accessing computer internals, use the following steps to install a
DAS-1600/1400 Series board in an accessory slot of your computer:

1. Turn off power to the computer and all attached equipment.

2. Remove the computer chassis cover.

Installing or removing a board while power is on can damage

Note: You

allow for the power used by any other boards that may be it] use. See

Table A-6 for DAS-1600/1400 Series power requirements.

must observe the current-capacity limits of the PC supply;

Setup and Installation

.frtn Page 19 Monday, June 6,1994 2:49 PM

3. Select an unoccupied accessory slot, and remove the corresponding
blank plate and retaining screws from the I/O connector panel. Save
the retaining screws for re-use in later steps.

4. If you are installing a DAS-1600 Series board and your application
uses the additional 24-bit digital I/O, remove the blank plate and
retaining screws of the adjacent slot. Save the retaining screws for
x-use in later steps.

5. Make sure the option switch settings match the settings shown in the
configuration-utility switch diagram.

6. Insert the board in the selected slot and secure the main I/O connector
mounting flange with the retaining screws.

7. When using the additional %-bit digital I/O of a DAS-1600 Series
board, connect the board end of the PI0 cable to the PI0 cable
cotmector (52) on the board. When connecting the cable, align the
raised arrow of the PI0 cable with the arrow imprinted on the PI0
cable connector (J2). Secure the mounting flange on the PI0 cable to
the connector panel next to the main I/O connector (Jl) with the
retaining screws.

8. Replace the computer cover,

e-

+P

9. Turn on power to the computer.

You can use the Control Panel (see Chapter 5) to verify board operation.
You are now ready to make I/O connections. Refer to Chapter 4 fat

descriptions of common I/O accessories and connections for
DAS-1600/1400 Series boards.

3-19

hap03_.frm Page 20 Monday, June 6,1994 2:49 PM

hap04-.frm Page I Monday, June 6,1994 2:50 PM

i

+P

In most applications, you use accessories to connect external I/O devices
to the DAS-1600/1400 Series boards. Accessories extend signals from the
main I/O connector (Jl) and the PI0 cable connector (52) to

corresponding screw terminals of the accessory.

In the case of DAS-1600 Series boards, 24 bits of parallel bidirectional

digital I/O is channeled to the rear panel of the host PC by a flat ribbon
cable known as the PI0 cable. The board end of the PI0 cable attaches to
the PI0 cable connector (J2) on the board. The other end of the PI0 cable

is fitted with a standard 37-pin D-type connector and a mounting flange

that installs in the connector panel next to the main I/O connector (Jl).

+b

The PI0 cable comes with all DAS-1600 Series boards.

4

Cabling and Wiring

This chapter describes the cabling and accessories required for attaching

field wiring to your DAS-1600/1400 Series boards.

Caution:

any attached accessories before making connections to DAS-1600/1400

Series boards.

To avoid electrical damage, tarn off power to the computer and

4-1

hap04Lfrm Page 2 Monday, June 6, 1994 2:50 PM

+b-

Attaching Screw Terminal Connectors and
Accessories

You can use the following screw terminal connectors and accessories to
simplify connection of field wiring to DAS-1600/1400 Series boards:

. STC-37 Screw Terminal Connector; when using a DAS-1600 Series

board, your application may require two connectors

l

STP-37 Screw Terminal Panel: whet1 using a DAS-1600 Series hoard,

your application may require two panels
. STA-16 Screw Terminal Accessory
. STA-U Universal Screw Terminal Accessory
The following sections describe how to attach these accessories to the

DAS-1600/1400 Series boards.

Attaching an STC-37

The screw terminals on the STC-37 screw terminal connector allow you
to colmect field wiring to a DAS-1600/1400 Series board. The screw
terminals accept wire sizes 12-22 AWG.

To connect an STC-37 to the main I/O connector (Jl) of a
DAS-1600/1400 Series board, directly attach the 37.pin comiector on the
STC-37 to the main I/O connector (Jl). Figure 4-1 illustrates the
connection of an STC-37 to a DAS-1400 Series board.

Note: Your

connector (Jl) and connections to the PI0 cable connector (52). When
two STC-37 connectors are required, you should consider wire sizes and
service area requirements. These considerations may suggest the use of an
alternate accessory.

application may require connections to the main I/O

4-2

Cabling and Wiring

hap04Lfrm

Page 3 Monday, June 6, 1994 2:50 PM

STG37 Screw Termlnal

DAS-1460 Series board

Jl

nn00nnnnn0r-

Figure 4-1. Attaching an STC-37 Screw Terminal Connector

The screw terminals are labeled from I to 37 and correspond directly to
the functions of the pins on the main I/O connector (see Figure 4-2). For
example, since pin 25 is assigned to IPO/I’RIG O/XPCLK, use screw
terminal 25 to attach a digital signal to bit 0 of the standard digital input

port.

4-3

frtn Page 4 Monday, June 6,1994 2:50 PM

Rear view

4

4

LL GND

ChO LO IN I Ch6 HI IN
Chl LO IN / Ch9 HI IN
Ch2 LO IN / ChlO HI IN

Ch3 LO IN / Chll HI IN
Ch4 LO IN / Ch12 HI IN
Ch6 LO IN / Ch13 HI IN
Ch6 LO IN I Ch14 HI IN

Ch7 LO IN I Ch15 HI IN

WA 0 FIEF IN*

WA 0 OUT’

“REF (-5)*
POWER GND

IP 1 I XTRIG

IP 3

OPl

OP3
CTR 0 OUT

t5VPWR

Pin 19
wn 19

PI” 17
PI” 16
Pin 15
Pin 14

PI” 13
PI” 12
PI” 11
PI” 10
PI” 9
PI” 9
PI” 7
PI” 6
PI” 5

PI” 4

PI” 3

Pin 2
PI” 1

’ .

l .

l .
’ l
l .
l .
’ l
’ .
l .
l .
’ .
l .
’ .

l .
’ .
l .
l .
’ .

.

Pin 37 ChO HI IN
P,” 36 Chl HI IN
PI” 35 Ch2 HI IN

Pin 34 Ch3 HI IN
Pin 33
Pln 32 ChJ HI IN
Pin 31

PI” 30 Ch7 HI IN
PI” 29 LL GND
PI” 26 LL GND
Pln 27
Pln 26
Pin 25
PI” 24

Pln 23
PI”
PI”
Pin

Ch4 HI IN

Ch6 HI IN

D/A 1 OUT*
D/A 1 REF IN*
IP 0 i TRIG 0 / XPCLK
IP 2 / CTR 0 GATE

OPO
22 OP2
21 CTR 0 CLOCK IN
20 CTR 2 OUT

II

* NO, connected I” DAS-1400 Series

Figure 4-2. Pin Assignments of the Main l/O Connector (Jl)

When using an STC-37 to make connections to the bidirectional digital
I/O, first attach the board end of the PI0 cable to the PI0 cable connector
(12) on the DAS-1600/1400 board, then install the 37-pin D-type
connector of the PI0 cable in the connector panel next to the main l/O
connector (Jl) of the DAS-1600/1400 Series board, and finally attach the
second STC-37 to the 37.pin D-type connector of the PI0 cable. For more
information about making field connections, see “Connecting Analog
Signals” on page 4-24.

4

4

4-4

Cabling and Wiring

14

hapOC.frm Page 5 Monday, June 6, 1994 2:50 PM

Attaching an STP-37

The screw terminals on the STP-37 screw terminal panel allow you to
connect tield wiring to DAS-1600/1400 Series boards. The STP-37
contains the following components:

. A 37-pin male connector for cabling to the main I/O connector of a

DAS-1600/1400 Series board.

. Labeled screw terminals for connecting sensor outputs and test

equipment. These terminals accept wire sizes 12-22 AWG.

You attach an STP-37 screw terminal panel to the main I/O connector (JI)
on the DAS-1600/1400 Series board with a C-1800 or S-1800 cable. The
C-1800 is the unshielded version of the cable; the S-1800 is the shielded
version of the cable. Figure 4-3 shows how to attach an STP-37 to a
DAS-1400 Series board.

Figure 4-3. Attaching an STP-37 to the Main 110 Connector

The screw terminals are labeled 1 to 38 and correspond directly to the
functions of the main I/O connector. See Figure 4-2 for the pin
assignments of the main I/O connector (Jl).

4-5

hap04_.frm Page 6 Monday, June 6, 1994 2:50 PM

t

43

When using an STP-37 to make connections to the bidirectional digital
I/O, first attach the board end of the PI0 cable to the PI0 cable connector
(J2) on the DAS-1600/1400 Series board, then install the 37-pin D-type
connector of the PI0 cable in the connector panel next to the main I/O
connector
STP-37 to the 37-pin D-type connector of the PI0 cable. See Figure 4-X
for the pin assignments of the 37.pin D-type connector of the PI0 cable.

(Jl)

of the DAS-1600/1400 Series board, and finally attach the

Attaching an STA-16

The screw terminals on the STA-16 screw terminal accessory allow you to
connect field wiring to DAS-1600/1400 Series boards. The STA-16
contains the following components:

. Two 37-pin male connectors. Ones for cabling to the main I/O

connector of a DAS-1600/1400 Series board and a second for
daisy-chaining additional accessories.

. Labeled screw terminals for connecting sensor outputs and test

equipment. These terminals accept wire sizes 12-22 AWG.

l

A breadboard area for user-installed circuitry.

You attach an STA- 16 screw terminal accessory to the main I/O connector
(JI) on the DAS-1600/1400 Series board with a C-1800 or S-1800 cable.

The C-1800 is the unshielded version of the cable; the S-1800 is the

shielded version of the cable. Figure 4-4 shows how to attach an STA-16
to a DAS-1400 Series board.

4-6

Cabling and Wiring

frm Page 7 Monday, June 6, 1994 2:50 PM

4

4

DAS.1400 Series board

Figure 4-5 shows the screw terminal names on the STA-16.

’ \

pin

1

Figure 4-4. Attaching an STA-16

/

pin 1

STA.16

4

4

4-7

4

hap04 .frm Page 8 Monday, June 6, 1994 2:50 PM

4Ic -

Attaching an STA-U

The screw terminals on the STA-U universal screw terminal accessory
allow you to comtect field wiring to the DAS-1600 Series PI0 cable
connector (J2). The STA-U contains the following components:

. A 37-pin male connector for cabling to the PI0 cable connector (J2)

on a DAS-1600 Series board.

. Labeled screw terminals for connecting digital inputs and outputs.

These terminals accept wire sizes 12-22 AWG.
. A breadboard area for user-installed circuitry.
First, attach the board end of the PI0 cable to the PI0 cable connector

(52) on the DAS-1600/1400 board. Next, install the 37.pin D-type
connector of the PI0 cable in the connector panel next to tbe main I/O
connector (Jl) of the DAS-1600/1400 Series board. Finally, attach

connector J2 on the STA-U screw terminal accessory to the 37-pin D-type
connector of the PI0 cable with a C- 1800 or S- 1800 cable. The C- 1800 is
the unshielded version of the cable; the S-1800 is the shielded version of
the cable.

4

Figure 4-6 shows bow to attach an STA-U to a DAS-1600 Series board.

4

4

4

4-8

-

pin

1

Figure 4-6. Cabling and Connections for Attaching an STA-U

pin

1

Cabling and Wiring

4

I4

4

hapOC.frm

Page 9 Monday, June 6, 1994 2:50 PM

Figure 4-7 shows the screw terminal names on an STA-U. The screw
terminals map directly to the pins of the PI0 cable connector (52) showo
in Figure 4-8.

I4

Figure 4-7. STA-U Terminal Names

4

4-9

4

4

.frm Page 10 Monday, June 6,1994 2:50 PM

4

Pill 19
Pill 18
Pin 17

Pin 16
Pin 15
Ph 14

Pill 13
Pill 12
P,” 11

Ph 10
Pill 9
Pin 8

Pill 7
Pill 6
Pill 5

Ph 4
Pi” 3
Pin 2

Ph 1

l .
’ .
’ .
l .
l .
’ .
l .
l .
l .
l .
l .
’ .
’ .
l .
l l

l L
l l

l .

.

PORT B

DIGCOM.
+5 v

DIG. COM.
NOT CONNECTED
DIG. COM.
NOT CONNECTED

DIG. COM.
NOT CONNECTED
D,G.COM.
PBO
PBI

r

PB2

PB3

PB4
PE!5
PB6

L-P;7

NOT CONNECTED

NOT CONNECTED

:

Figure 4-8. Pin Assignments of PI0 Cable Connector (JZ)

Attaching Expansion Accessories

Ph 37
Pln 36
Pill 35
Ph 34
Ph 33

Pln 32
Pill 31
Pill 30

Pill 29

Ph 28

Pin 27

Pill 26

Pin 25
Ph 24

Pln 23

Pin 22

Ph 2,

Pin 20

PA0
PA1
PA2
PA3
PA4

1

PA5
PA6

-I

PA7

PC0
PC 1
PC2

1

PC3

PC4 ­PC5

PC6

PC7

DIG. COM.

PORT A

PORT CH

PORT CL

4-10

You can use the following expansion accessories to increase the number
of channels available and add signal conditioning to your application:

. EXP-16
. EXP16/A
. EXP-GP
The following section describes how to attach these expansion

accessories to DAS-1600/1400 Series boards.

Cabling and Wiring

4

4

& hap04-.frm Page 11 Monday, June 6,1994 2:50 PM

Attaching an EXP-16 or EXP-16/A Expansion Accessory

Each expansion multiplexer/amplifier accessory provides up to 16 analog

input channels (labeled 0 to 15). Table 4-l lists the terminal names used

on EXP-16 and EXP-16/A expansion accessories.

Table 4-1. EXP-16 and EXP-16/A Terminal Names

4

Terminal Name

LL GND

CHn LO

Signal

low-level mound

negative input; where n indicates the channel number

To connect an EXP- 16 or EXP- 16/A to a DAS- 1600/1400 Series board,

attach one end of an S-1600 cable to the DAS-1600/1400 Series main I/O
connector (Jl) and the other end of the cable to the Jl connector on the

EXP-16 or EXP-16/A. Figure 4-9 illustrates the connection of an EXP-16

to a DAS-1400 Series board.

4

-l8r

DAS-1400 Series board

Figure 4-9. Attaching an EXP-16 or EXP-16/A Expansion Accessory

EXP-16

4

4-11

4

4

.,./,.,./..,./,.,.,...,./.,.._,,,.,.,.,,,.,.,.,.,...,.,,,.,.,...,........,..,..,..,.....,..,............,....,...,.,,

hap04-.frm

Page 12 Monday, June 6,1994 2:50 PM

Note:

DAS-1600/1400 Series board.

Refer to the EXP-16 and EXP-16/A expansion board documentation for
more information about these accessories and instructions for installing
the PG-408A option on the board.

Caution:

connector (J2) on the DAS-1600 Series board.

The S-1600 cable must be used to connect the first EXP to the

Do not attach an EXP-16 or EXP-16/A to the PI0 cable

Attaching an EXP-GP Expansion Accessory

Each EXP-GP expansion multiplexer/signal conditioner board provides
up to eight analog input channels (labeled 0 to 7). Table 4-2 lists the
terminal names used on each EXP-GP channel.

Table 4-2. EXP-GP Terminal Names

4

4-12

1 Terminal Name /

+IExc

-P

~~

:it;.:.l::‘:.:.~,..“:.ili.-:i::.:.: i....i..,.,l.i....l....i.... ,.... :.

-SENSE

To connect an EXP-GP to a DAS-1600/1400 Series board, attach one end
of an S-1600 cable to the DAS- 1600/1400 Series main I/O connector (Jl)
and the other end of the cable to the I1 connector on the EXP-GP.
Figure 4-10 illustrates the connection of an EXP-GP to a DAS-1400

Series board.

positive current excitation

negative voltage excitation

negative input

Signal

1

Cabling and Wiring

4

4

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t

4

Figure 4-10. Attaching an EXP-GP Expansion Accessory

Refer to the EXP-GP expansion board documentation for more
information about this expansion accessory.

4

4

Attaching Multiple Expansion Accessories

4

You can daisy-chain up to eight EXP-16, EXP-16/A, and/or EXP-GP

expansion accessories to provide up to 128 analog input channels.
As shown in Figure 4- 1 I, you connect the first expansion accessory to the

DAS-1600/1400 Series board by attaching one end of an S-1600 cable to
the main I/O connector (Jl) on the DAS-1600/1400 Series board and the
other end of the cable to the Jl connector on the expansion accessory.

4-13

frm Page 14 Monday, June 6, 1994 2:50 PM

4

4

Jl

Figure 4-11. Attaching Multiple Expansion Accessories

To connect additional expansion accessories, attach one end of a C-1800
cable or S-1800 to the J’2 connector on the previous expansion board and
the other end of the cable to the Jl connector on the next expansion board
in the chain.

Notes:

associated with an analog input channel on the DAS- 1600/1400 Series
boards. You specify the associated DAS-160011400 input channel by

setting a jumper on each expansion bdard. Make sure that you use a
unique jumper setting for each expansion board you are using. Refer to
your expansion board documentation for more information.

J2

Each EXF-16, EXP-16/A, or EXP-GP expansion accessory is

Jl J2

Jl

J2 Ji

4

4

4-14

Make sure that you attach EXP-16 and EXP-16/A expansions accessories
before EXP-GP expansion accessories.

You can access the remaining functions of the DAS-1600/1400 Series
board by including an STA-16 or STA-U screw terminal accessory in the
daisy chain. Figure 4-12 illustrates how to connect two EXP-16
expansion accessories, one EXP-GP expansion accessory, and an STA-16
(or STA-U) screw terminal accessory to a DAS-1400 Series board.

Cabling and Wiring

4

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4

4

Jl

I

DAM400 or

DAS-16W Series

Figure 4-12. Attaching Multiple Expansion Accessories with an STA-16 or STA-U

I

board

Note: As shown in Figure 4- 12, when you use an STA- 16 (or STA-U) to
access unused signals, you must attach the STA-16 (or STA-U) first with a
C-1800 or S-1800 cable.

J2

STA-16 or
STA-U

Jl J2 Jl J2

I

EXP-16

I

I I

EXP-16

J1

I

Attachina an ISO- Accessorv

The ISO- is a high speed, universal expansion interface and isolation

amplifier. The ISO- contains four fully isolated, differentially measured
input channels supporting seven jumper-selectable gains of 1,2, 10, 50,

100,200, and 1000 on a per channel basis. You can further customize

gains to meet your specific requirements with user-installable resistors.

EXP.GP

I

4

Refer to the IS0-4 User’s Guide for more information about ISO-

features and applications.
To connect an ISO- accessory to a DAS-1600/1400 Series board, attach

one end of an S-1600 cable to the DAS-1600/1400 Series main I/O

connector (II) and the other end of the cable to the Jl connector on the

ISO- accessory. Figure 4-13 illustrates the connection of an ISO-

accessory to a DAS-1400 Series board.

4-15

4

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DAS-1400 Series board

Figure 4-13. Attaching an IS04 Accessory

Attachinn SSH Accessories

4

4

Simultaneous sample-and-hold (SSH) accessories allow you to acquire
analog input data from multiple inputs simultaneously. SSH accessories
available for DAS-1600/1400 Series boards are the SSH-4/A and the
SSH-8.

Figure 4-14 shows a diagram of a typical measurement system using an
SSH-8.

Figure 4-14. A Typical SSH-8 Application

The following subsections describe. how to attach SSH-4/A and SSH-8

boards

to DAS-1600/1400 Series boards.

4

41

4-16

4

Cabling and Wiring

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Attaching an SSH-4/A

The SSH-4/A is a 4-channel simultaneous sample-and-hold board whose
functions and capabilities are described in the #H-4/A User Guide. The

SSH-4/A serves as a front-end analog interface for DAS-1600/1400

Series boards.

Figure 4-15 shows how to attach the SSH-4/A to a DAS-1400 Series

board.

4

4

4

Figure 4-15. Attaching an SSH-4/A Accessory

Additional SSH-4/A accessories are attached in daisy-chain fashion with
a CACC-2000 cable.

Attaching an SSH-8

The SSH-8 is a high performance X-channel simultaneous

sample-and-hold board whose functions and capabilities are described in
the SSH-8 User’s Guide. The SSH-8 serves as a front-end analog interface
for DAS-1600/1400 Series boards.

Figure 4-16 and Figure 4-17 show how to attach SSH-8 boards to a
DAS-1600/1400 Series board.

4-17

4

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4

4

Figure 4-16. Attaching SSH-8 Accessories

When you use the cabling shown in Figure 4-16, observe the following
rules:

For best results, the length of any cable should not exceed 30 inches.
The length of two cables should not exceed 36 inches. Total length for

all cables in series should not exceed 50 inches. Total cable length

does not include analog input cables.
You can use the STC-SSH-8 screw terminal interface instead of a

cable.
Use eight feet maximum of #IX AWG wire (or heavier) for optional

external power
When daisy-chaining two SSH-8 accessories to a DAS-1600/1400

Series board, put the first in master mode and the second in slave
mode.

Optional channel jumpers are 0 to 7 for the first SSH-8 accessory and

8 to 15 for the second.

and

ground.

4

4-18

Cabling and Wiring

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4

l

Where the S-1800 cable is called out, other options include C-1800,
S-1801, and C-1801. Crosstalk, shielding, and cost trade-offs are
factors in the selection of these options.

4

Caution:

SSH-8 outputs.

Refer to the SSH-8 User’s Guide for more information.

Do not connect analog inputs to STA-16 pins that are driven by

4

4-19

4

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frm Page 20 Monday, June 6, 1994 250 PM

Attaching an MB Series Backplane

MB Series modules are ideally suited to applications where monitoring
and control of temperature, pressure, flow, and other analog signals are
required. Figure 4-18 shows a block diagram of a typical MB Series
measurement and control application.

mV, V, Thermocouple,

RTD, Slraln Gauge,

4-20 mA / O-20

mA

oto+5v/isv

4-20

$.

&2OmA/~2OmA

Figure 4-18. Typical Measurement and Control Application

Table 4-3 provides a brief summary the backplanes available for use with
MB Series modules.

Cabling and Wiring

frm Page 21 Monday, June 6,1994 2:50 PM

Table 4-3. MB Series Backplanes

I4

Model

MB01

STA-MB Holds up to four modules and provides general-purpose screw

Description

Holds up to 16 modules ‘and mounts in a 19.inch equipment rack.
Provides direct channel-to-channel connection to an a
DAS-1600/1400 Series board making it suitable for high-speed,
high-resolution applications.

terminal connections for all other signals on the DAS1600/1400
Series board.

Attaching an MB01 Backplane

Use the C16-MB1 cable to connect a DAS-1600/1400 Series board to an

MB01 backplane. This

analog input channels 0 through 15 on the DAS-1600/1400 Series

Refer to Figure 4- 19 for a cabling diagram.

cable connects MB01 channels 0 through 15 to

board.

4

use WnneclOr Pl or P2

(Identical

Figure 4-19. Attaching an MB01 Backplane

pinouts)

4

4-21

4

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4

Note:

DAS-1600/1400 Series board is set for 16-channel, single-ended
operation.

The channel connections are single-ended. Make sure that the

Attaching an MB02 Backplane

Figure 4-20 shows how to connect a DAS-1600/1400 Series board to up
to four MB02 backplanes. The STA-SCM16 interface connects one
MB02 board to one analog input channel of the DAS-1600/1400 Series
board. One C-2600 cable connects each MB02 to the STA-SCM16, and
the C-1800 cable connects the STA-SCM16 to the DAS-1600/1400 Series
board.

4

4-22

Figure 4-20. Attaching Multiple MB02 Backplanes

Figure 4-21 shows how the STA-SCM16 connects DAS-1600/1400 Series
boards with MB02 backplanes.

Cabling and Wiring

4

I-$

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D/A CH 0 OUT

D/A CH 1 OUT

DAS.1606 Series board

Figure 4-21. MB02 I/O Connections

The four digital output lines on the DAS-1600/1400 Series boards select

one of the 16 MB02 channels. For example, if you set the digital output

lines to 1000 (8 decimal), MB02 channel 8 is selected on all four
backplanes. Analog input channels 0 to 3 on the DAS-1600/1400 Series
board map directly to the connectors labeled 0 to 3 on the STA-SCM16.

In this arrangement, the channel connections are single-ended. Make sure
that the DAS-1600/1400 Series board is set for single-ended, 16-channel
operation.

Refer to the ME Series User’s Guide for more information.

Backplane Connectors

STA-SCM16

4

4

4-23

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t

4

Connecting Analog Signals

This section contains precautionary advice to consider before making

analog input connections. The section also shows some circuits for wiring

signal sources to input channels of DAS-1600/1400 Series boards.

While the circuit diagrams show direct connections to channel input pins

of the main I/O connector, you must make actual connections through

corresponding inputs of an accessory.

The circuit diagrams represent a single signal source wired to a single

chamiel (channel n). In reality, you can wire eight separate signal sources

to eight differential inputs or 16 separate signal sources to 16

single-ended inputs.

If you expect to use DAS-1601 or DAS-1401 boards at high gain, read the

precautionary information in the following section. Other considerations

for I/O connections are offered under “Additional Precautions” on page

4-25.

4

Precautions for Using DAS-1601/1401Boards at High Gains

Operating DAS-1601 or DAS-1401 boards at gains of 100 or 500 can lead

to problems if your application is unable to cope with noise. At a gain of

500, with a bipolar input range of -10.0 V to + 10.0 V, each bit of A/D

output corresponds to 10 uV of analog input. Thus, with the high speed

and bandwidth of this board, analog noise and performance degradation

come easily unless you take precautions to avoid them. The following

collection of ideas and suggestions is aimed at avoiding these problems:

. Operate DAS-1601 and DAS-1401 boards in 8-channel differential

mode. Using the board in 16.channel, single-ended mode at high
gains introduces enough ground-loop noise to produce large
fluctuations in readings.

4-24

Cabling and Wiring

4

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Page 25 Monday, June 6,1994 2:50 PM

. Minimize noise from crosstalk and induced-voltage pickup in the flat

cables and screw terminal accessories by using shielded cable.
Connect the shield to LL GND and the inner conductors to Channel
LO and HI. Channel LO and LL GND should have a DC return (or
connection) at some point; this return should be as close to the signal
source as possible. Induced noise from RF and magnetic fields can
easily exceed tens of microvolts, even on one- or two-foot cables;
shielded cable eliminates this problem.

. Avoid bi-metallic junctions in the input circuitry. For example, the

kovar leads, used on reed relays, typically have a thermal emf to
copper of 40 IV/Y!. Thermals can introduce strange random
variations caused by air currents and so on.

. Consider filtering. This approach can use hardware (resistors,

capacitors, and so on) but is often accomplished more easily with
software. Instead of reading the channel once, read it 10 or more
times in quick succession and average the readings. If the noise is
random and gaussian, it will be reduced by the square-root of the
number of readings.

Additional Precautions

Do not mix your data acquisition inputs with the AC line, or you risk

damaging the computer. Data acquisition systems provide access to inputs

of the computer. An inadvertent short between data and power lines can

cause extensive and costly damage to your computer. The manufacturer

can accept no liability for this type of accident. To prevent this problem,

use the following precautions:

. Avoid direct connections to the AC line.

. Make sure all connections are tight and sound so that signal wires are

not likely to come loose and short to high voltages.

. Use isolation amplifiers and transformers where necessary.

4-25

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Connecting a Signal to a Single-Ended Analog Input

Figure 4-22 shows the connections between a signal source and a channel

of a DAS-1600/1400 Series board configured for single-ended input

mode.

3

<

<

3

CHANNEL n

HIGH

LLGND -

DAS-1600/1400
Serlea board

r

+

signal
SO”PFJ

Figure 4-22. Connections for Wiring a Signal Source to a

DAS-1600/1400 Series Board Configured for Single-Ended Inputs

The main I/O connector (Jl) contains the following two ground

connections:

. POWER GND is the noisy or “dirty” ground that carries all digital

signal and power supply currents.

l

LL GND or low level ground is the ground reference for all analog

input functions and it only carries signal currents that are less than a

few mA.

Due

to connector contact resistance and cable resistance, there may be
many millivolts difference between the two grounds although they are
connected to each other.

Note:

advised to wire all

When you wire signals to the analog input channels, you arc

unused

channels to LL GND. This action prevents the

input amplifiers from saturating, and it ensures the accuracy of your data.

4-26

Cabling and Wiring

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Page 27 Monday, June 6,1994 2:50 PM

Connecting a Signal to a Differential Analog Input

This section describes common connection schemes for differential

inputs. The section also discusses the principles for avoiding ground
loops.

Common Connection Schemes for Differential Inputs

Figure 4-23 shows three methods of wiring a signal source to a channel of

a DAS-1600/1400 Series board configured for differential input mode.

4

4-27

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Page 28 Monday, June 6,1994 2:50 PM

DA!3.1600/1400
Series board

DAS-1600/1400

Series board

di.

Channel n High

mnel n High
lnnel n LOW

Where R. < 100 ohms
Fib > 1000 R,

4-28

Figure 4-23. Three Methods of Wiring Differential Inputs

Cabling and Wiring

4

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The upper two circuits of the diagram require the addition of resistors to
provide a bias-current return. You can determine the value of the bias
return resistors (Rb) from the value of the source resistance (R,), ushtg the

following relationships:
. When R, is greater than 100 S& use the connections in the upper

circuit. The resistance of each of the two bias return resistors must

equal 2000 R,.

. When R, is less than 100 Ll, use the connections in the middle circuit.

The resistance of the bias return resistor must be greater than 1000 R,.

In the lower circuit, bias current return is inherently provided by the
source. The circuit requires no bias resistors.

Avoiding Ground Loops with Differential Inputs

Very often, the signal-source ground and the DAS-1600/1400 Series
board ground are not at the same voltage level because of the distances
between equipment wiring and the building wiring. This difference is
referred to as a commorz-mode voltage (Vcm) because it is normally
common to both sides of a differential input (it appears between each side

and ground).

4

Since a differential input responds only to the difference in the signals at

its high and low inputs, its common-mode voltages cancel out and leave
only the signal. However, if your input connections contain a ground
loop, your input could see the sum of the signal-source and
common-mode voltages. Figure 4-24 shows the proper way to connect a

differential input while Figure 4-25 illustrates the effect of a ground loop.

4-29

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Page 30 Monday, June 6.1994 2:50 PM

Figure 4-24. A Differential Input Configuration that Avoids a Ground Loop

4

3 CHANNEL n HIGH

-?

DAS-1600/14W
Series board

Figure 4-25. Differential Input Configuration with a Ground Loop

+ CHANNEL n LOW

N - - v.,

3

LL GND

“02

AA.

vcnl E vg1 vg2

--

>

i

,Fe

r m

SIgnal
SO”,CB

= Ground

“01

SIgnal
SOUW3

4

4-30

Cabling and Wiring

hap04-.frm Page 31 Monday, June 6,1994 2:50 PM

4

Connecting Analog Output Signals

DAS-1600 Series boards include two DACs. Refer to the specifications in
Appendix A for voltages, current limits, and other loading information.
Make your connections to the DAC output terminals through
corresponding screw terminals of your accessory. Table 4-4 lists the input

and

output

connections of the DACs in the DAS-1600 Series boards.

Table 4-4. DAC Input and Output Connections

Sianal 1 Main I/O Connector (Jl) /

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The Control Panel

The Control Panel is a utility program for testing the functions of your
DAS-1600/1400 Series boards; it is available in a DOS version
(CTLl600.EXB) and a Windows version (CTLl600W.EXE). The DOS

version is part of both the DAS-1600/1400 Series standard software
package and the ASO- and ASO- software package. The
Windows version is a part of the ASO- and ASO- software

package only.

4

5

4

Note:

advised to install the Keithley Memory Manager (VDMAD.386) to

ensnre the allocation of a memory buffer large enough for Control Panel

needs, Refer to Appendix D for details of the Keithley Memory Manager.

To use the Control Panel, perform the following steps:

Before using the Windows version of the Control Panel, you arc

1. Start the Control Panel from the DOS or Windows environments as
follows:

-

Ifyou are in the DOS environment, change to the directory
containing the CTLl600BXE program and enter the following at

the DOS prompt:

CTL1600

-

Ifyou are in the Windows environment, double click on the
Control Panel icon in the DAS-1600 Group window, which is
within the Program Manager window.

After the Control Panel starts, it asks you for the name of a
configuration file.

4

4

4

5-1

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Page 2 Monday, June 6, 1994 2:52 PM

2. To use the settings from the default configuration tile, select OK. If
you prefer to use the settings from another configuration file, enter
the name of that file and select OK.

After the Control Panel accepts the name of a configuration file, it
displays the DAS-1600 TEST & CONTROL panel. This panel

contains the controls that allow you to acquire, read, and transfer data

and to set up and display parameters.

3. To set up and perform an operation, select the appropriate buttons. To
obtain information on the setup and performance of an operation, use
the Help option in the Control Panel menu. To obtain information on
DAS-1600/1400 Series board functions and parameters, refer to
Chapter 2.

4. To set up and perform a digital I/O operation, select Digital I/O from
the Control Panel menu; to set up and perform a D/A operation, select

D/A from the Control Panel menu. When the Control Panel displays
the DIGITAL I/O & D/A panel, you can select appropriate buttons to

proceed with your operation.

4

5. If you are working in the Windows environment, you can use the
Control Panel’s Dynamic Data Exchange (DDE) to transfer data to
another Windows program by selecting DDE from the Control Panel
menu and use the Display options/Graphics panel to graph up to eight
channels.

6. Use the File menu to open, close, or save a file.

7. When you finish using the Control Panel, select the Exit option from
the File men” to terminate the program.

4

4

5-2

4

The Control Panel

4

hapOb.frm Page 1 Monday, June 6,1994 2:52 PM

Your DAS-1600/1400 Series board is initially calibrated at the factory.
You are advised to check the calibration of a board every six months and
to calibrate again when necessary. This chapter provides the information
you need to calibrate a DAS-1600/1400 Series board.

Equipment Requirements

6

Calibration

The equipment requirements for calibrating a DAS-1600/1400 Series
board are as follows:

l

A digital voltmeter accurate to a minimum of 5 l/2 digits

. An adjustable f10 V power source

Potentiometers and Test Points

Figure 3-1 on page 3-14 and Figure 3-2 on page 3-15 show the locations

of the potentiometers aad test points that are used during the calibration of
a DAS-1600 Series or DAS-1400 Series board.

The calibration utility, described in the next section, directs you to
components and explains what to do with them during the calibration
process.

6-l

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Calibration Utility

To calibrate a DAS-1600 Series board, use the DOS-based
CAL1600.EXE calibration utility. To calibrate a DAS-1400 Series board,
use the DOS-based CAL1400.EXE calibration utility. These utilities are
included in both the DAS-1600/1400 Series standard software package
and the ASO- and ASO- software package.

Start the calibration utility by changing to its directory and entering the

following at the DOS prompt:

CAL1600

CAL1400

Follow the utility-program prompts as they appear; the program guides
you through the calibration process.

6-2

Calibration

4

hap07-.frm

Problem Isolation

Page 1 Monday, June 6,1994 2:53 PM

Troubleshooting

If your DAS-1600/1400 Series board is not operating properly, use the

information in this chapter to isolate the problem. If the problem appears
serious enough to warrant technical support, refer to “Technical Support”
on page l-6.

4

7

4

If you encounter a problem with a DAS-1600/1400 Series board, use the
instructions in this section to isolate the cause of the problem before
calling the factory.

Identifying Symptoms and Possible Causes

Use the troubleshooting information in Table 7-l lo try to isolate the
problem. Table 7-1 lists general symptoms and possible solutions fool
problems with DAS-1600/1400 Series boards.

4

7-1

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k

4

Table 7-1. Troubleshooting Information

4

iymptom

laud does not
:spond

lltermitteot
peration

F

‘ossible Cause Possible Solution

I-

E

lase address is incorrect. Ensure that the base address switch on

the board is set correctly and that your
program references the s~mc base
address. If the base address is set
correctly, ensure that no other computer
device is using any of the I/O locations
beginning at the specified base address.
See Table 3-2 for a list of standard
address assignments. If necessary,
reconfigure the base address. Refer to
page 3-16 for instructions on setting the
base address.

‘The board is incorrectly aligned Check installation.
in the accessory slot.

running BIOS setup.

The board is overheating. Check environmental and ambient

temperature. See the documentatiot~ for

Bus cycles require wait state. Enable wait states on the

DAS-1600/1400 Series board.

7-2 Troubleshooting

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Page 3 Monday, June 6, 1994 253 PM

Table 7-1. Troubleshooting Information (cont.)

Symptom Possible Cause Possible Solution

Computer does noI Board not seated properly. Check that the board is properly

System lockup

The power supply of the host

computer is too small to handle aad obtain n larger power supply if
all the devices installed in your llt%SSSXY.
system.

If your board is not operating properly after using the information in

Table 7-1, continue

problem.

with the next two sections to further isolate the

Check the needs of all system devices

I

7-3

2

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k

Testing the Board and Host Computer

To isolate the problem to the DAS-1600/1400 Series
computer, use the following steps:

1. Turn the power to the host computer OFF, and remove power
connections to the computer.

Caution: Removing a board with the power ON can cause damage to
your board and/or computer.

2. While keeping connections to accessories intact, unplug the accessory
connector(s) or cable(s) from the DAS-1600/1400 Series board(s).

3. Remove the DAS-I600/1400 Series board(s) from the computer and
visually check for damage. If a board is obviously damaged, refer
“Technical Support” on page 7-6.

4. With the DAS-1600/1400 Series board(s) out of the computer, check
the computer for proper operation. Power up the computer and
perform any necessary diagnostics.

At this point, if you have another DAS-1600/1400 Series board that you
know is functional, you can test the slot and I/O connections using the
instructions in the next section. If you do not have another board, refer to
page 7-6 for instructions on calling the factory.

board or to the host

to

7-4

Troubleshooting

hap07-.frm Page 5 Monday, June 6,1994 2:53 PM

-@

Testing the Accessory Slot and I/O Connections

When you are sure that the computer is operating properly, test the
computer accessory slot and I/O connections using another
DAS-1600/1400 Series board that you know is functional. To test the
computer accessory slot and the I/O connections, follow these steps:

1. Remove computer power again, and install a DAS-1600/1400 Series
board that you know is functional. Do not make any I/O connections.

2. Turn computer power ON and check operation with the functional
board in place. This test checks the computer accessory slot. If you

were using more than one DAS-1600/1400 Series board when the

problem occurred, use the functional board to test the other slot(s) as

well.

3. If the accessory slots are functional, use the functional board to check

the I/O connections. Recomrect and check the operation of the I/O
connections, one at a time.

4. If operation fails for an I/O connection, check the individual inputs

one at a time for shorts and opens.

5. If operation remains normal to this point, the problem is in the

DAS-1600/1400 Series board(s) originally in the computer. If you
were using more than one board, try each board one at a time in the
computer to determine which is faulty.

6. If you cannot isolate the problem, refer to the next section for

instructions on obtaining assistance.

7-5

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Technical Support

Before returning any equipment for repair, call the factory. Please make
sure that you have the following information available before

you

call:

DAS-1600/1400 Series
Board Confifiguration

Computer

Operating System

Software package

Model

Serial #
Revision code
Base address setting
Interrupt level setting
Number of channels
Input (SE. or Diff.)
Mode (tmi. or hip.)
DMA than(s)
Number of SSH-8 brds.
Number of EXP brds.

Manufacturer
CPU type
Clock speed (MHz)
KB of RAM
Video system
BIOS type

DOS version

Windows version
Windows mode

NiUlle
Serial #
Version
Invoice/Order #

7-6

CompiIer

(if applicable)

Accessories

LmIgUage
Manufacturer
Version

Troubleshooting

.frm Page 1 Monday, June 6, 1994 2:53 PM

Tables A-l to A-7 list specifications for the DAS-1600/1400 Series

boards.

Table A-l. Analog Input Specifications

A

Specifications

1 Attribute

Number of

Illput mode

Resolution

Gain (settling time)

Throughput’ 100 kHz for gains of 1 to 10 100 kHz for all gains

channels

1 DAS-1601/1401 Boards

/ ‘_

Swtch configurable

1 12-bits (1 part in 4096 or 244 ppm)

500 (0

to

+20

500 (i20 mV for bipolar)

70

kHz for a gain of 100

30

kHz for a gain of 500

BS eight

mV for unipolar)

/ DAS-1602/1402 Boards

differential or 16 single-ended

8 (0.0 to 1.25

8 (il.25 V for bipolar)

V for umipolar)

I

A-l