Measurement CIO-DAC0816 User Manual

CIO-DAC08/16

and

CIO-DAC16/16

User’s Manual

Revision 6

April, 2001

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 Measurement Computing Corp. is believed to be accurate and
reliable. However, no responsibility is assumed by Measurement Computing Corporation
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 Measurement Computing Corporation.

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 Measurement Computing Corporation.

Notice

Measurement Computing Corporation does not authorize any
Measurement Computing Corporation product for use in life support
systems and/or devices without the written approval of the President of
Measurement Computing Corporation 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. Measurement Computing
Corp. 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 2001, Measurement Computing Corporation

HM CIO-DAC##_16.lwp

Table of Contents

1.0 INTRODUCTION

2.0 SOFTWARE INSTALLATION

3.0 HARDWARE INSTALLATION

4.0 REGISTER ARCHITECTURE

5.0 SPECIFICATIONS

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

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

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

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

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

1
1
2

23.1 BASE ADDRESS ...............................................

43.2 ANALOG OUTPUT RANGE JUMPERS ............................

43.3 UNIPOLAR/BIPOLAR INITIAL ZERO STATE JUMPER ..............

53.4 SIMULTANEOUS UPDATE JUMPER ..............................

63.5 INSTALLING THE BOARDS IN THE COMPUTER ..................

63.6 CABLING TO THE BOARD ......................................

73.7 SIGNAL CONNECTION .........................................

83.8 CONNECTOR DIAGRAM .......................................

9

94.1 CONTROL & DATA REGISTERS .................................

104.2 OUTPUT TRANSFER FUNCTIONS ..............................

12

This page is blank.

1.0 INTRODUCTION

The CIO-DAC16/16 is a 16-channel analog output board. The CIO-DAC08/16 is an
8-channel analog output board. The analog outputs are from AD660BNs with each
output buffered by an OP-27.

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 may also be set for simultaneous update by selecting XFER on
jumper J18. This jumper applies to all DACs.

When the DACs are set for simultaneous update, writing new digital values to a
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 (any address from
base + 0 through base + 31, or through base +15 for the DAC08).

2.0 SOFTWARE INSTALLATION

The CIO-DAC##/16 is supplied with InstaCal. InstaCal is an installation, calibration
and test package. Use it to guide the installation procedure. InstaCal also creates a
configuration file required for programmers who have purchased the Universal
Library programming libraries. Refer to the Software Installation Manual for
complete instructions. If you decide not to use InstaCal as a guide, the information
required for configuring the board is provided in the following section.

1

3.0 HARDWARE INSTALLATION

The CIO-DAC16/16 and DAC08/16 each has one bank of range jumpers, a single
unipolar/bipolar jumper, one base address switch and a simultaneous update jumper
which must be set before installing the board in your computer. The InstaCal program
included with both boards shows how these switches are set. Run this program before

you open your computer.

We recommend you perform the software installation described in
sections below prior to installing the board in your computer. The

InstaCal

switches and jumpers on the board prior to physically installing the
board in your computer.

The CIO-DAC16/16 is setup at the factory with:

BASE ADDRESS 300h (768 decimal)
SIMULTANEOUS UPDATE In the UPDATE position. Single channel update.
ANALOG OUTPUT ±5V
UNI / BIP JUMPER BIP

3.1 BASE ADDRESS

Unless there is already a board in your system which uses address 300h (768 decimal)
leave the switches as they are set at
the factory. The base address switch
for the CIO-DAC16/16 is shown
here, set to 300 hex. The
CIO-DAC08/16 has one additional
switch on the base address switch
bank (A4 with a weight of 10 hex).

TM

program provided will show yo u ho w to p rope rly set th e

Figure 3-1. Base Address Switches (Set to 300h)

The address switches may be set for a base address in the range of 000-3E0 (3F0 for
the DAC08) so it should not be hard to find a free address area. Once again, if you
are not using IBM prototyping cards or some other board which occupies these
addresses, then 300-31Fh are free to use. Addresses not specifically listed, such as
390-39F, are free.

Refer to table 3-1 for PC I/O address usage.

2