CIO-DDA06
Analog Output Board
User’s Guide

Document Revision 7A, December, 2006
© Copyright 2006, Measurement Computing Corporation

Trademark and Copyright Information
Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo areeither trademarks or registered trademarks of Measurement Computing Corporation. Refer to the Copyrights &Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective
companies.
© 2006 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.
NoticeMeasurement Computing Corporation does not authorize any Measurement Computing Corporation product for
use in life support systems and/or devices without prior written consent from Measurement Computing
Corporation. Life support devices/systems are devices or systems that, 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 ininjury. Measurement Computing Corporation 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 ofpeople.

HM CIO-DDA06.doc

3

4

Table of Contents
Preface

About this User's Guide .......................................................................................................................6
What you will learn from this user's guide .........................................................................................................6
Conventions in this user's guide .........................................................................................................................6
Where to find more information.........................................................................................................................6
Chapter 1

Introducing the CIO-DDA06 .................................................................................................................7
Overview: CIO-DDA06 features........................................................................................................................7
Software features ................................................................................................................................................7
Chapter 2

Installing the CIO-DDA06 .....................................................................................................................8
What comes with your CIO-DDA06 shipment?.................................................................................................8
Hardware .......................................................................................................................................................................... 8
Additional documentation................................................................................................................................................. 8

Optional components..........................................................................................................................................8
Unpacking the CIO-DDA06...............................................................................................................................9
Installing the software ........................................................................................................................................9
Configuring the CIO-DDA06.............................................................................................................................9Base address switch .......................................................................................................................................................... 9
Wait state jumper .............................................................................................................................................................10
Individual / simultaneous transfer jumper........................................................................................................................10
Power up and reset jumper...............................................................................................................................................11
Analog output range switch .............................................................................................................................................12

Installing the CIO-DDA06 ...............................................................................................................................12
Connecting the board for I/O operations ..........................................................................................................13
Connectors, cables – main I/O connector ........................................................................................................................13
Pinout – main I/O connector ............................................................................................................................................13
Cabling.............................................................................................................................................................................14
Field wiring, signal termination, and conditioning ..........................................................................................................14
Chapter 3

Programming and Developing Applications ....................................................................................15
Programming languages ...................................................................................................................................15
Packaged applications programs ......................................................................................................................15
Register-level programming .............................................................................................................................15
Chapter 4

Functional Details ...............................................................................................................................16
CIO-DDA06 block diagram .............................................................................................................................16Signal connections............................................................................................................................................16
Chapter 5

Specifications......................................................................................................................................17
Analog output ...................................................................................................................................................17
Digital input / output ........................................................................................................................................18
Power consumption ..........................................................................................................................................18
Environmental ..................................................................................................................................................18
Main connector and pin out..............................................................................................................................18

5

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide explains how to install, configure, and use the CIO-DDA06 board so that you get the most outof its analog output features. This user's guide also refers you to related documents available on our web site,
and to technical support resources.

Conventions in this user's guide
The following conventions are used in this manual to convey special information:
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you arereading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
<#:#>

Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned
to registers, bit settings, etc.

bold text

Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For
example:1. Insert the disk or CD and click the OK button.

italic text

Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For
example:The InstaCal installation procedure is explained in the Quick Start Guide.
Never touch the exposed pins or circuit connections on the board.

Where to find more information
The following electronic documents provide information relevant to the operation of the CIO-DDA06.







MCC's Specifications: CIO-DDA06 (the PDF version of the Specifications chapter in this guide) isavailable on our web site at www.mccdaq.com/pdfs/CIO-DDA06.pdf.
MCC's Quick Start Guide is available on our web site atwww.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
MCC's Guide to Signal Connections is available on our web site atwww.mccdaq.com/signals/signals.pdf.
MCC's Universal Library User's Guide is available on our web site atwww.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf.
MCC's Universal Library Function Reference is available on our web site atwww.mccdaq.com/PDFmanuals/sm-ul-functions.pdf.
MCC's Universal Library for LabVIEW™ User’s Guide is available on our web site atwww.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf.

CIO-DDA06 User's Guide (this document) is also available on our web site atwww.mccdaq.com/PDFmanuals/CIO-DDA06.pdf.

6

Chapter 1

Introducing the CIO-DDA06
Overview: CIO-DDA06 features
The CIO-DDA06 has six channels of 12-bit analog output and 24 lines of digital I/O. Analog outputs are dualDAC AD7273s (two analog outputs per chip), with each output buffered by an OP07. Digital I/O is performed
with one 82C55 chip. The CIO-DDA06 is 100% compatible with MetraByte's DDA-06.
Analog output ranges are switch-selectable for a Bipolar or Unipolar range. Bipolar ranges are ±10 V, ±5 V,±2.5 V, and ±1.67 V. Unipolar ranges are 0 to 10 V, 0 to 5 V, 0 to 2.5 V, and 0 to 1.67 V.
Analog outputs are grouped in pairs (0/1, 2/3, and 4/5). Each analog output pair is jumper-selectable for either
individual or simultaneous transfer in groups of two, four, or all six.
When a DAC pair is set for simultaneous update, the CIO-DDA06 may be set to hold new values until allchannels are loaded, then update any two, four, or all six channels simultaneously.
The CIO-DDA06 digital I/O lines are a direct interface to an 82C55. The 82C55 is a CMOS chip with TTL
level inputs and outputs. The 8255 can source or sink about 2.5 mA. This is adequate to switch other TTL or
similar inputs, but is inadequate to drive relays, LEDs or solid state relays. The digital I/O is controlled byprogramming the 8255's mode register. There are three possible modes. The simplest and most commonly used
mode is mode 0 — simple input and output.
The power up and reset state is jumper-selectable (hardware revision 3 and later). You can also enable a waitstate generator with an on-board jumper.

Software features
For information on the features of InstaCal and the other software included with your CIO-DDA06, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version.

7

Chapter 2

Installing the CIO-DDA06
What comes with your CIO-DDA06 shipment?
The following items are shipped with the CIO-DDA06.

Hardware

CIO-DDA06

Additional documentation
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of
the software you received with your CIO-DDA06 and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.

Optional components


CablesC37FF-xC37FFS-x

Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the CIO-DDA06. Refer to Field
wiring, signal termination, and conditioning on page 14 for a complete list of compatible accessory
products.
8

CIO-DDA06 User's Guide

Installing the CIO-DDA06

Unpacking the CIO-DDA06
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the CIO-DDA06 from its packaging, ground yourself using a wrist strap or bysimply touching the computer chassis or other grounded object to eliminate any stored static charge.
If any components are missing or damaged, notify Measurement Computing Corporation immediately byphone, fax, or e-mail:

Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com

Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data
Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFmanuals/DAQ-SoftwareQuick-Start.pdf.

Configuring the CIO-DDA06
The CIO-DDA06 has one base address switch, one bank of gain switches for each analog output channel, asimultaneous update jumper for each DAC pair, a "power-up state" selection jumper, and one wait state jumper.
The InstaCal calibration and test program will show you how to set the switches. Run InstaCal before you open
your computer and install the board.
The CIO-DDA06 is shipped with the factory-default settings listed in the table below.
Factory-configured default settings
Board label

Switch/jumper description

Default setting

ADDRESS
WAIT STATEXFER
UPDATE ##GAIN #DIP switch for setting the base address
Jumper to enable a wait state generator
Jumpers to select simultaneous or single channel
update for each DAC channel pair

300h (768 decimal)
OFF position (disabled)
UPDATE position (single channel update)

DIP switches to set the output range for eachanalog output channel
Jumper to select the power up and reset state±5V

PWR UP

STD position — standard mode (undefined
output values at power up)

Before installing the CIO-DDA06 in the computer, verify that the board is configured with the settings that you
want. Review the following information to change the default configuration of a jumper or switch on the CIODDA06 board.

Base address switch
Set the base address with the dip switch labeled ADDRESS located on the board.
The easiest way to set the base address switch is to let InstaCal show you the correct settings. However, if arealready familiar with setting ISA base addresses, you may use the base address switch description below to
guide your base address selection.
Unless there is already another board in your system using address 300 hex (768 decimal), leave the switches as
they are set at the factory. Figure 1 shows the base address switch set to its factory-default base address of
300 hex.
9

CIO-DDA06 User's Guide

Installing the CIO-DDA06

ADDRESS

9

8

7

6

5

4

SW
A9
A8
A7
A6
A5
A4

HEX
200
100
80
40
20
10

Figure 1. Base address switch

In the default configuration shown in Figure 1, addresses 9 and 8 are DOWN, and all others are UP.
Address 9 = 200 hex (512 decimal), and address 8 = 100 hex (256 decimal). When added together they equal
300 hex (768 decimal).
Disregard the numbers printed on the switch
When setting the base address, refer to the numbers printed in white on the printed circuit board.

Wait state jumper
The CIO-DDA06 board has a wait state jumper which you can set to enable an on-board wait state generator. A
wait state is an extra delay injected into the processor's clock via the bus. This delay slows down the processor
when the processor addresses the CIO-DDA06 board so that signals from slow devices (chips) will be valid.
This jumper is shown in Figure 2 configured for OFF (wait state is disabled).

ON

OFF

Figure 2. Wait State jumper

The wait state generator on the CIO-DDA06 is only active when the CIO-DDA06 is being accessed. Your PC
will not be slowed down in general by using the wait state.

Individual / simultaneous transfer jumper
The analog outputs can be jumpered so that new output data is held until several DACs have been loaded withnew digital data. Then, as a group, the data for each DAC is simultaneously transferred and the DAC voltage
outputs are updated when any of the addresses BASE + 0 to BASE + B are read.
The analog output chips on the CIO-DDA06 are dual DACs (two analog outputs per chip). Each DAC channel
pair has an associated jumper that sets both DACs on a single chip to be either simultaneously transferred on aread, or individually updated when the control register is written.
Figure 3 shows the jumper block configured for each update mode. Two numbers are listed on the board next toeach simultaneous transfer jumper (45, 23, and 01 from left to right). The numbers indicate which channel pairis configured by the jumper (channels 0 and 1, 2 and 3, 4 and 5).

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CIO-DDA06 User's Guide

Installing the CIO-DDA06

XFER

XFER

UPDATE # #UPDATE # #Individual updates
per DAC(two channels)

Simultaneous updates
from all DACS
jumpered to XFER

Figure 3. Individual / simultaneous update jumperWhen the jumpers are in the XFER position, new output data is held until one or more DACs have been
loaded with new digital data. The new data transfers to the voltage outputs as a group. The simultaneoustransfers occur when any of the CIO-DDA06 addresses are read (and the jumpers are in the XFER
position).
When the jumpers are in the UPDATE ## position, the DAC channel pair is individually updated when thecontrol register is written.

Power up and reset jumper
The power up and reset jumper (hardware revision 3 and later) controls the state of the DAC outputs when the
CIO-DDA06 board is powered up or reset. This jumper is shown in Figure 4.
STD

STD

ZERO

ZERO

zero volts
power up

Undefined
power up

Figure 4. Power up and reset jumperWhen set for ZERO, all DACs are cleared to 0 volts, ±32 mV on power up and reset. In addition, all DACs
are set to simultaneous update mode until first read.
When set for STD, the analog output values are undefined on power up and reset.

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CIO-DDA06 User's Guide

Installing the CIO-DDA06

Analog output range switch
The analog output voltage range of each channel can be set with a set of six-position DIP switches. The switch
blocks are located on the board below the calibration potentiometers. The switch blocks are labeled GAIN 0 to
GAIN 5, and individual switches are labeled 1 through 6. Set the switches for each individual channel as shownin Figure 5.

GAIN #
Range

1

2

4

5

6

±10
±5.0
±2.5
±1.67

UP
UP
UP
UP

DN
DN
DN
DN

DN
UP
DN
DN

DN
DN
UP
DN

DN
DN (Shown)
DN
UP

0-10
0-5
0-2.5
0-1.67

DN
DN
DN
DN

UP
UP
UP
UP

DN
UP
DN
DN

DN
DN
UP
DN

DN
DN
DN
UP

Figure 5. Analog output range switch — one per DAC — configured for ±5 V

To set a channel to a particular range, read the switch positions as UP or DN (down) from left to right in therow beside the range you want to set. The switch shown in Figure 5 is configured for ±5V range (switch
settings UP>DN>DN>UP>DN>DN).

Installing the CIO-DDA06
After you configure the board's switches and jumpers, you can install the CIO-DDA06 into your computer. To
install your board, follow the steps below.
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install
the MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on
installing the software.
1.

Turn your computer off, open it up, and insert your board into an available ISA slot.

2.

Close your computer and turn it on.

3.

To test your installation and configure your board, run the InstaCal utility you installed in the previous
section. Refer to the Quick Start Guide that came with your board www.mccdaq.com/PDFmanuals/DAQSoftware-Quick-Start.pdf for information on how to initially set up and load InstaCal.

12

CIO-DDA06 User's Guide

Installing the CIO-DDA06

Connecting the board for I/O operations
Connectors, cables – main I/O connector
The table below lists the board connector, applicable cables, and compatible accessory products.
Board connector, cables, and accessory equipment
Connector typeCompatible cables

Compatible accessory productswith the C37FF-x cable or
C37FFS-x cable

37-pin male "D" connector
C37FF-x
C37FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to construct your own cable)
CIO-MINI37
CIO-TERMINAL
SCB-37
SSR-RACK24, ERB24, RACK08, ERB08
ENC-MINI37

Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal
Connections (available at www.mccdaq.com/signals/signals.pdf).

Pinout – main I/O connector
The CIO-DDA06 I/O connector is a standard 37-pin male connector that is accessible through the PC/AT
expansion bracket.

LLGND
D/A OUT 0
LLGND
D/A OUT 1
LLGND
D/A OUT 2
LLGND
D/A OUT 3
DGND
FIRSTPORT B Bit 0
FIRSTPORT B Bit 1
FIRSTPORT B Bit 2
FIRSTPORT B Bit 3
FIRSTPORT B Bit 4
FIRSTPORT B Bit 5
FIRSTPORT B Bit 6
FIRSTPORT B Bit 7
D/A OUT 4
D/A OUT 5

19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20

FIRSTPORT A Bit 0
FIRSTPORT A Bit 1
FIRSTPORT A Bit 2
FIRSTPORT A Bit 3
FIRSTPORT A Bit 4
FIRSTPORT A Bit 5
FIRSTPORT A Bit 6
FIRSTPORT A Bit 7
FIRSTPORT C Bit 0
FIRSTPORT C Bit 1
FIRSTPORT C Bit 2
FIRSTPORT C Bit 3
FIRSTPORT C Bit 4
FIRSTPORT C Bit 5
FIRSTPORT C Bit 6
FIRSTPORT C Bit 7
LLGND
LLGND

Figure 6. I/O connector pin-out

The analog outputs are two-wire hook-ups. Always use low-level ground (LLGND) as the ground reference for
all analog hook-ups.
All the digital outputs inputs are TTL level. Before connecting external devices, review the specifications inthis manual to avoid damage to the CIO-DDA06.
13

CIO-DDA06 User's Guide

Installing the CIO-DDA06

Cabling
The red stripe
identifies pin # 1

1

1

20

20

37

37

19

19

Figure 7. C37FF-x cable

1

19

1
20

37

19

20

37

Figure 8. C37FFS-x cable

Field wiring, signal termination, and conditioning
You can use the following cabling, screw termination, and signal conditioning products with the CIO-DDA06.









DFCON37 – Connector kit that includes a 37-pin female D-connector, D-shell, 37 crimp pins, and cabletermination kit to construct your own cable. Details on this product are available on our web site atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=103&pf_id=304.
CIO-MINI37 – 37-pin screw terminal board. Details on this product are available atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=102&pf_id=255.
CIO-TERMINAL – 37-pin screw terminal board with on-board prototyping area. Details on this productare available on our web site at www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=102&pf_id=282.
SCB-37 – 37-conductor, shielded signal connection/screw terminal box. Details on this product areavailable on our web site at www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=196&pf_id=1166.
SSR-RACK24 – 24-channel, solid-state relay mounting rack for digital signal conditioning. Details on thisproduct are available on our web site atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=122&pf_id=1193.
CIO-SERB08 – 8 Form C relays, 10 Amp, relay accessory board with socketed and field-replaceable
relays. Details on this product are available on our web site atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=123&pf_id=680.
CIO-ERB24 – 24 Form C relays, 6 Amp relay accessory board for digital signal conditioning. Details on
this product are available on our web site atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=123&pf_id=241.
ENC-MINI37– Enclosure for the MINI37. Details on this product are available atwww.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=98&pf_id=318.

14

Chapter 3

Programming and Developing Applications
After following the installation instructions in Chapter 2, your board should now be installed and ready for use.
In general there may be no correspondence among registers for different boards. Software written at the registerlevel for other models will not function correctly with your board.

Programming languages
Measurement Computing's Universal Library provides access to board functions from a variety of Windows
programming languages. If you are planning to write programs, or would like to run the example programs for
Visual Basic or any other language, please refer to the Universal Library User's Guide (available on our website at www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf).

Packaged applications programs
Many packaged application programs now have drivers for your board. If the package you own does not have
drivers for your board, please fax or e-mail the package name and the revision number from the install disks.
We will research the package for you and advise how to obtain drivers.
Some application drivers are included with the Universal Library package, but not with the application package.
If you have purchased an application package directly from the software vendor, you may need to purchase ourUniversal Library and drivers. Please contact us by phone, fax or e-mail:

Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com

Register-level programming
You should use the Universal Library or one of the packaged application programs mentioned above to control
your board. Only experienced programmers should try register-level programming.
If you need to program at the register level in your application, refer to the Register Map for the CIO-DDA06.
This document is available on our website at www.mccdaq.com/registermaps/RegMapCIO-DDA06.pdf.

15

Chapter 4

Functional Details
CIO-DDA06 block diagram
CIO-DDA06 functions are illustrated in the block diagram shown here.
P/O
37-pin D conn.

P/O37-pin D conn.

8255
Digital I/O
FIRSTPORTA

Gain switch

OP07

AD7237

Gain switch

OP07

Gain switch

Data
Path
and
Control

OP07

AD7237

Gain switch

FIRST FIRSTPORTC PORTC
HI
LO

OP07

AD7237

Gain switch

OP07

AD7237

Gain switch

OP07

AD7237ADDRESS

9 8 7 6 5 4

FIRSTPORTB

AD7237Address Decode
Bus Interface
Buffers and Transceivers

FIRSTPORTA Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
FIRSTPORTB Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
FIRSTPORTC Bit 0
Bit 1
Bit 2
Bit 3
FIRSTPORTC Bit 4
Bit 5
Bit 6
Bit 7

37
36
35
34
33
32
31
30
10
9
8
7
6
5
4
3
29
28
27
26
25
24
23
22

DGND

11

Note: Digital I/O
pin assignments are
the same as for
the CIO-DIO24

ISA BusSignal connections
The CIO-DDA06 outputs are individually buffered through an OP07 operational amplifier (OP-AMP). The
OP07s are socketed so that if one fails it can be replaced in the field. The OP07 for each channel is located justbelow the calibration potentiometers for that channel.
At the full rated output swing of ±10 V, each channel is capable of sinking or sourcing ±5 mA. A load of 2 KΩ
can be connected to each channel. As the load resistance rises from 2 K up to 10 MΩ or more, the output loadon the DAC decreases. Any load resistance greater than 2 k is acceptable.

16Chapter 5

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog output
Table 1. Analog output specifications
D/A converter type
Resolution
Number of channels
Output ranges

Offset error
Gain error
Differential nonlinearity
Integral nonlinearity
Monotonicity
D/A gain drift
D/A bipolar offset drift
D/A unipolar offset drift
D/A settling time (20 V step to ±0.01%)
Slew rate
Current drive
Output short-circuit current
Output coupling
Output impedance
D/A pacing
D/A trigger modes
Data transfer
Throughput
Miscellaneous

AD7237
12-bits
6
Bipolar:±10 V, ±5 V, ±2.5 V, ±1.67 V
Unipolar:0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to 1.67 V
Each channel is independently switch-selectable.
Trimmable to zero
Trimmable to zero
± ½LSB max± ½LSB max± ½LSB max±15 ppm/°C typical, ±30 ppm/°C max±7 ppm/°C typical, ±15 ppm of FSR/°C max±1 ppm/°C typical, ±3 ppm of FSR/°C max
5 µs typ, 10 µs max
5 V/µs±5 mA
20 mA indefinite
DC
0.1 Ohms max
Software paced
Software
Programmed I/O
System dependent Double buffered output latches Update DACs individually or simultaneously (jumper selectable by pairs)
 Power up and reset option, jumper selectable (revision 3 and up): With
jumper set to "ZERO", all DAC's cleared to 0 volts, ±32 mV, DACs set tosimultaneous update mode until first read. With jumper set to "STD", DAC
output on power-up is undefined.

17

CIO-DDA06 User's Guide

Specifications

Digital input / output
Table 2. DIO specifications
Digital type
Number of channels
Configuration
Output highOutput low
Input highInput low
Power-up / reset state

82C55
24 I/O
2 banks of 8, 2 banks of 4, programmable by bank as input or output
3.0 volts min @ –2.5 mA
0.4 volts max @ 2.5 mA
2.0 volts min, 5.5 volts absolute max
0.8 volts max, –0.5 volts absolute min
Input mode (high impedance)

Power consumption
Table 3. Power consumption specifications
+5 V
+12 V
–12 V

435 mA typical, 525 mA max
50 mA typical, 80 mA max
120 mA typical, 160 mA max
Table 4. Power consumption specifications with optional DC/DC converter installed

+5 V
+12 V
–12 V

935 mA typical / 1.025 A max
N/A
N/A

Environmental
Table 5. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 50 °C–20 to +70 °C
0 to 90% non-condensing

Main connector and pin out
Table 6. Connector specifications
Connector typeCompatible cables

Compatible accessory productswith the C37FF-x cable or
C37FFS-x cable

37-pin male "D" connector
C37FF-x
C37FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to construct your own cable)
CIO-MINI37
CIO-TERMINAL
SCB-37
SSR-RACK24, CIO-ERB24, SSR-RACK08, CIO-ERB08
ENC-MINI37

18

CIO-DDA06 User's Guide

Specifications

Table 7. Connector pin out
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Signal Name
D/A OUT 5
D/A OUT 4
FIRSTPORTB Bit 7
FIRSTPORTB Bit 6
FIRSTPORTB Bit 5
FIRSTPORTB Bit 4
FIRSTPORTB Bit 3
FIRSTPORTB Bit 2
FIRSTPORTB Bit 1
FIRSTPORTB Bit 0
DGND
D/A OUT 3
LLGND
D/A OUT 2
LLGND
D/A OUT 1
LLGND
D/A OUT 0
LLGND

Pin
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

19

Signal Name
LLGND
LLGND
FIRSTPORTC Bit 7
FIRSTPORTC Bit 6
FIRSTPORTC Bit 5
FIRSTPORTC Bit 4
FIRSTPORTC Bit 3
FIRSTPORTC Bit 2
FIRSTPORTC Bit 1
FIRSTPORTC Bit 0
FIRSTPORTA Bit 7
FIRSTPORTA Bit 6
FIRSTPORTA Bit 5
FIRSTPORTA Bit 4
FIRSTPORTA Bit 3
FIRSTPORTA Bit 2
FIRSTPORTA Bit 1
FIRSTPORTA Bit 0

Declaration of Conformity
Manufacturer:
Address:

Category:

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USAElectrical equipment for measurement, control and laboratory use.

Measurement Computing Corporation declares under sole responsibility that the product

CIO-DDA06
to which this declaration relates is in conformity with the relevant provisions of the following standards orother documents:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN55022 (1987), EN50082-1
Emissions: Group 1, Class B


EN55022 (1987): Radiated and Conducted emissions.

Immunity: EN50082-1


IEC 801-2 (1987): Electrostatic Discharge immunity, Criteria B.
IEC 801-3 (1984): Radiated Electromagnetic Field immunity Criteria A.
IEC 801-4 (1988): Electric Fast Transient Burst immunity Criteria B.

Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
December, 1995. Test records are outlined in Chomerics Test Report #EMI0168B.95.
We hereby declare that the equipment specified conforms to the above Directives and Standards.

Carl Haapaoja, Director of Quality Assurance

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com