Omega Products CIO-DAC08 Installation Manual

CIO-DAC16

and

CIO-DAC08

User’s Manual

Revision 4

October, 2000

MEGA-FIFO, the CIO prefix to data acquisition board model numbers, the PCM prefix to data
acquisition board model numbers, PCM-DAS08, PCM-D24C3, PCM-DAC02, PCM-COM422,
PCM-COM485, PCM-DMM, PCM-DAS16D/12, PCM-DAS16S/12, PCM-DAS16D/16,
PCM-DAS16S/16, PCI-DAS6402/16, Universal Library, InstaCal, Harsh Environment
Warranty and Measurement Computing Corporation are registered trademarks of Measurement
Computing Corporation.

IBM, PC, and PC/AT are trademarks of International Business Machines Corp. Windows is a
trademark of Microsoft Corp. All other trademarks are the property of their respective owners.

Information furnished by OMEGA Engineering Inc is believed to be accurate and
reliable. However, no responsibility is assumed by OMEGA Engineering Inc
neither for its use; nor for any infringements of patents or other rights of third parties, which
may result from its use. No license is granted by implication or otherwise under any patent or
copyrights of OMEGA Engineering Inc.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form by any means, electronic, mechanical, by photocopying, recording
or otherwise without the prior written permission of OMEGA Engineering Inc.

Notice

OMEGA Engineering Inc. does not authorize any
OMEGA Engineering Inc. product for use in life support

systems and/or devices without the written approval of the President of
OMEGA Engineering Inc.. Life support devices/systems are
devices or systems which, a) are intended for surgical implantation into
the body, or b) support or sustain life and whose failure to perform can
be reasonably expected to result in injury. OMEGA Engineering Inc.
products are not designed with the components required, and are
not subject to the testing required to ensure a level of reliability suitable
for the treatment and diagnosis of people.

(C) Copyright 2000 OMEGA Engineering Inc.

HM CIO-DAC##.lwp

Table of Contents

1 INTRODUCTION
2 SOFTWARE INSTALLATION
3 HARDWARE INSTALLATION

3.1 Initial Board Setup

3.2 Selecting the Base Address

3.3 Wait State Jumper

3.4 Individual / Simultaneous Update Jumpers

3.5 Analog Output Range Switches

3.6 Installing the CIO-DAC## in the Computer

3.7 Cabling to the CIO-DAC##

3.8 Testing the Installation

3.9 Signal Connection

3.10 Connector Diagram

4 ARCHITECTURE

4.1 Control & Data Registers

5 SPECIFICATIONS

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1 INTRODUCTION

The CIO-DAC16 is a 16 channel analog output board. The CIO-DAC08 is an eight
channel analog output board. The analog outputs are dual-DAC AD7273s with each
output buffered by an OP07. The CIO-DAC family is compatible with MetraByte's
DDA-06 but lacks digital outputs. Software designed for the DDA-06 will operate
the analog outputs.

The analog outputs are controlled by writing a digital control word as two bytes to
the DAC's control register. The control register is double buffered so the DAC's
output is not updated until the second byte (the high byte) has been written.

The analog outputs can also be set for simultaneous update in groups of two, four,
six, etc. or all sixteen. When a DAC pair is set for simultaneous update, writing new
digital values to the DAC's control register does not cause an update of the DAC's
voltage output. Update of the output occurs only after a READ from the board's
addresses.

2 SOFTWARE INSTALLATION

An installation program labeled InstaCal™ is on the disk shipped with the board.
This program will guide you through board configuration and switch settings. Refer
to the Extended Software Installation Manual for complete instructions regarding
installing and using InstaCal. If you decide not to use InstaCal as a guide, the
information required for configuring the board is provided in the following section.

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3 HARDWARE INSTALLATION

3.1 Initial Board Setup

The CIO-DAC## has one bank of gain switches for each analog output channel, one
base address switch, a simultaneous update jumper for each DAC pair, a “power-up
state” selection jumper and one wait state jumper block which must be set before
installing the board in your computer. The InstaCal calibration and test program
included with the CIO-DAC## will show how these switches are to be set. Run the
program before you open your computer.

The CIO-DAC## is setup at the factory as follows:

300h (768 decimal)BASE ADDRESS
Off Position, RightWAIT STATE
Single Channel UpdateSIMULTANEOUS UPDATE
+

5VANALOG OUTPUT

Standard (undefined output values at power up)POWER UP STATE

3.2 Selecting the Base Address

Unless there is already a board in
your system that uses address
300h (768 decimal), leave the
switches as they are set at the
factory.

In the example shown here, the
CIO-DAC## is set for base
address 300h (768 decimal).

Figure 3-1. Base Address Switches

Certain address are used by the PC, others are free and can be used by the
CIO-DAC## and other expansion boards. We recommend you try the factory
default BASE = 300h (768 decimal) first.

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