CIO-DAC02
Analog Output Board
User's Guide

Document Revision 5A, March, 2010
© Copyright 2010, 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.
© 2010 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-DAC02.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-DAC02 .................................................................................................................7
Overview: CIO-DAC02 features ........................................................................................................................ 7
CIO-DAC02 block diagram .............................................................................................................................................. 7

Software features ................................................................................................................................................ 7
Chapter 2

Installing the CIO-DAC02 .....................................................................................................................8
What comes with your CIO-DAC02 shipment? ................................................................................................. 8
Hardware .......................................................................................................................................................................... 8

Additional documentation .................................................................................................................................. 8
Optional components .......................................................................................................................................... 8
Unpacking the CIO-DAC02 ............................................................................................................................... 9
Installing the software ........................................................................................................................................ 9
Configuring the CIO-DAC02 ............................................................................................................................. 9Base address switch .......................................................................................................................................................... 9
Wait state jumper .............................................................................................................................................................10
Voltage reference jumpers ...............................................................................................................................................11

Installing the CIO-DAC02 ............................................................................................................................... 11
Connecting the board for I/O operations .......................................................................................................... 12
Connectors, cables – main I/O connector ........................................................................................................................12
Field wiring, signal termination, and conditioning ..........................................................................................................12
Chapter 3

Functional Details ...............................................................................................................................13
Analog outputs ................................................................................................................................................. 13
4-20 mA outputs ............................................................................................................................................... 13
Chapter 4

Specifications ......................................................................................................................................15
Analog output ................................................................................................................................................... 15Power consumption .......................................................................................................................................... 15
Environmental .................................................................................................................................................. 16
Main connector and pin out .............................................................................................................................. 16
Declaration of Conformity ..................................................................................................................175

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-DAC02 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.
Shaded caution statements present information to help you avoid injuring yourself and others, damaging yourhardware, 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
For additional information relevant to the operation of your hardware, refer to the Documents subdirectory
where you installed the MCC DAQ software (C:\Program Files\Measurement Computing\DAQ by default), or
search for your device on our website at www.mccdaq.com.
If you need to program at the register level in your application, refer to the Register Map for the CIO-DAC02.
This document is available on our website at www.mccdaq.com/registermaps/RegMapCIO-DAC02.pdf.

6

Chapter 1

Introducing the CIO-DAC02
Overview: CIO-DAC02 features
The CIO-DAC02 provides two channels of 12-bit analog voltage or current output. Each analog output is
controlled by a 12-bit D/A converter. A 12-bit converter provides 1/4096 parts resolution. On a scale of 0-5
volts, the output can be controlled to within 1.22 mV.
The output voltage reference for each D/A is jumper-selectable for Bipolar or Unipolar. Bipolar ranges are ±10
V and ±5 V. Unipolar ranges are 0 to 10 V, 0 to 5 V, and 4 to 20 mA. You can also provide an external voltage
reference via connections to the board's 25-pin connector.
The board also features a wait state generator that you enable with an on-board jumper.

CIO-DAC02 block diagram
D/A1 bipolar gain
D/A1 unipolar offset
D/A1 4-20 gain, unipolar gain & bipolar offset
D/A0 bipolar gain
D/A 0 unipolar offset
D/A0 4-20 gain, unipolar gain & bipolar offset
VREF adjust
4-20 #1 offset
4-20 #0 offset

VREF Jumper Block6.95 Volt Reference Circuit

5

1
0

E
X
T

D/A 0

Uni 0

Bip 0

D/A converter 0

Base Address Switch

Uni 1

5

- E
1 X
0 T

D/A 1

Bip 1

D/A converter 1
i0

i Out buffer
i1

UP
DN
9 876 54 3 2

Wait State

Wait State Jumper

PC/XT/AT Bus Connector

Figure 1. CIO-DAC02 functional block diagram

THE CIO-DAC02 BOARD

Software features
For information on the features of InstaCal and the other software included with your CIO-DAC02, refer to the
Quick Start Guide that shipped with your device.

7

Chapter 2

Installing the CIO-DAC02
What comes with your CIO-DAC02 shipment?
The following items are shipped with the CIO-DAC02.

Hardware

CIO-DAC02

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-DAC02 and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.

Optional components
You can also order the following MCC product to use with your CIO-DAC02.


C25FM-x cables

Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the CIO-DAC02. Refer to Field
wiring, signal termination, and conditioning on page 12 for a complete list of compatible accessory
products.
8

CIO-DAC02 User's Guide

Installing the CIO-DAC02

Unpacking the CIO-DAC02
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the CIO-DAC02 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-DAC02
The CIO-DAC02 has one base address switch, one wait state jumper, and one output range jumper which you
must set before installing the board in your computer. The InstaCal calibration and test program included with
the CIO-DAC02 will show you how to set the switches. Run InstaCal before you open your computer andinstall the board. The CIO-DAC02 is shipped with the factory-default settings listed below.
Factory-configured default settings
Board label

Switch/jumper description

Default setting

ADDRESS
WAIT STATE
D/A0 D/A1

DIP switch for setting the base address
Jumper to enable a wait state
Jumpers to set the output voltage reference

300h (768 decimal)
OFF position
External (X) position

Before installing the CIO-DAC02, 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 CIO-DAC02 board.

Base address switch
Before you install the CIO-DAC02 in your computer, set the base address by using the dip switch labeled
ADDRESS located on the board. The easiest way to set the base address switch is to let InstaCal show you thecorrect settings. However, if are already 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. The example shown in Figure 2 shows the settings for the factory-default baseaddress of 300 hex.

9 8 7 6 5 4 3 2

SW
A9
A8
A7
A6
A5
A4
A3
A2

HEX
200
100
80
40
20
10
08
04

Figure 2. CIO-DAC02 base address switches

9

CIO-DAC02 User's Guide

Installing the CIO-DAC02

In the default configuration shown in Figure 2, 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.
PC I/O addresses
Hex Range

Function

Hex Range

Function000-00F
020-021040-043060-063060-064070-071080-08F
0A0-0A1
0A0-0AF
0C0-0DF
0F0-0FF
1F0-1FF
200-20F
210-21F
238-23B
23C-23F
270-27F
2B0-2BF

8237 DMA #1
8259 PIC#1
8253 Timer
8255 PPI (XT)8742 Controller (AT)
CMOS RAM & NMI mask (AT)DMA page registers
8259 PIC #2 (AT)NMI mask (XT)8237 #2 (AT)80287 numeric CO-P (AT)Hard disk (AT)
Game control
Expansion unit (XT)Bus mouse
ALT bus mouse
Parallel printer
EGA

2C0-2CF
2D0-2DF
2E0-2E7
2E8-2EF
2F8-2FF
300-30F
310-31F
320-32F
378-37F
380-38F
3A0-3AF
3B0-3BB
3BC-3BB
3C0-3CF
3D0-3DF
3E8-3EF
3F0-3F7
3F8-3FFEGA
EGA
GPIB (AT)
Serial Port
Serial Port
Prototype card
Prototype card
Hard disk (XT)
Parallel printer
SDLC
SDLC
MDA
Parallel printer
EGA
CGA
Serial port
Floppy disk
Serial port

The CIO-DAC02 Base switch can be set for an address in the range of 000-3E0, so it should not be hard to finda free address area for your CIO-DAC02. If you are not using IBM prototyping cards, or some other board
which occupies these addresses, then 300-31F HEX are free to use. Addresses not specifically listed, such as
390-39F, are free.

Wait state jumper
The CIO-DAC02 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-DAC02 board so that signals from slow devices (chips) will be valid.
This jumper is shown in Figure 3 configured for OFF (wait state is disabled).

O
F
F

O
N

Figure 3. Wait State jumper

The wait state generator on the CIO-DAC02 is only active when the CIO-DAC02 is being accessed. Your PC
will not be slowed down in general by using the wait state.

10

CIO-DAC02 User's Guide

Installing the CIO-DAC02

Voltage reference jumpers
The output voltage of the D/A converters is determined by the value of the reference voltage (VREF) and thedigital code written to the DACs (refer to the Analog outputs section on page 13). The VREF signal must be
supplied to each D/A or no voltage output will be present at the D/A's output pin. The VREF is supplied via
jumpers or from an external source.
A jumper block consisting of two rows of six pins is located on the upper right corner of the board. There are
two groups of pins — one for D/A 0 and one for D/A 1. Each group of pins provide a means of supplying either-5V or -10V to each D/A.
The board is shipped with both the D/A 0 and D/A 1 VREF jumpers in the external (X) position. With jumpers
in the X position, the required D/A reference voltage(s) must be supplied to the 25-pin connector VREF input
pins.
A -5VREF provides a ±5V output on the D/A bipolar output, 0-5V output on the unipolar output and a 4-20
mA output on the current output.
If other ranges are desired, an external voltage between -10 and +10 volts should be supplied.
The on-board voltage reference jumper supplies the same signals available at the 25-pin connector directly to
the D/A VREF input, without the bother of looping the -5VREF or -10VREF outputs back into the D/A VREF
inputs, as is required with the MetraByte DAC-02.
D/A 0
-5

-10

D/A 1
X

-5

-10

X

OUTPUT RANGE SELECT JUMPER BLOCK Figure
4. Voltage
jumpers
Thejumpers
are in thereference-5V REF position.

Installing the CIO-DAC02
After you configure the board's switches and jumpers, you can install the CIO-DAC02 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.

11

CIO-DAC02 User's Guide

Installing the CIO-DAC02

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 products with
the C25FM-x cable25-pin D type connector
 C25FM-x
 DMCON-25 (D-connector, D-shell, and termination pins to construct your own
cable)
CIO-MINI25

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-DAC02 I/O connector is a standard 25-pin male D connector that is accessible through the expansion
backplate.

Figure 5. I/O connector pin-out

Field wiring, signal termination, and conditioning
You can use the following cabling, screw termination, and signal conditioning products with the CIO-DAC02.


CIO-MINI25 – 25-pin screw terminal board.
DMCON-25 – Connector kit that includes a 25-pin male D-connector, D-shell, 25 crimp pins, and cabletermination kit to construct your own cable.

Details on these products are available on our web site atwww.mccdaq.com/products/screw_terminal_bnc.aspx.
12Chapter 3

Functional Details
Analog outputs
Each D/A converter has three analog outputs; a unipolar voltage, a bipolar voltage and a 4-20 mA current
output. The range of the output is determined by the reference voltage selected on that D/A's VREF input. The
CIO-DAC02 provides two on-board jumper selectable reference voltages; -5V and -10V.
Choosing a VREF input of -5V provides a range of 0 to +5 volts on the unipolar output and ±5V on the bipolar
output. The 4-20 mA output is also available at this setting.
Choosing a VREF input of -10V provides a unipolar output of 0 to +10 volts and a ±10V bipolar output.
Choosing an external voltage reference will provide:

A unipolar output equal to:
A bipolar output equal to:

VREF/4096 * (D/A value) * (-1)
VREF/2048 * ( (D/A value) -2048 )4-20 mA outputs
In addition to voltage outputs, each D/A can supply a 4-20 mA output with a resolution of 0.0039 mA per bit.
You can use the 4-20 mA outputs to control devices in a 4-20 mA control loop. The 4-20 mA current loop
circuit is a precision current sink employing a VMOS FET. A diode provides reverse hookup protection (seeFigure 6).
Select the on-board -5V reference for 4-20 mA use (see Figure 4 on page 11).
4-20mA OUTUNIPOLAR OUT

+
-

4mA
LLGND

4-20mAOUTPUT
Figure 6.
4-20 mACURRENT
loop output –LOOP
simplified
circuit diagram13

CIO-DAC02 User's Guide

Functional Details

A minimum of 8 VDC and a maximum of 36 VDC external excitation voltage is used to power the loop. A
typical application would use a 24 V loop supply. The loop may use either a grounded load (the supply"floats"), or a grounded supply, (the load "floats"). Both methods are shown in Figure 7.
FLOATING
SUPPLYFLOATING
LOAD+
4-20mA

-

4-20mA+ GROUNDED
SUPPLYGROUNDED
LOAD
LLGND

LLGND

-

LoopmAgrounding
4-20mA OUTPUTS -Figure
The 7.4-20
maymethods
be hooked up with either afloating supply or a floating load. Both methods are shown here.

14

Chapter 4

Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog output
Table 1. Analog input specifications
D/A converter
Resolution
Number of channels
Voltage ranges (Bipolar output)
Voltage ranges (Unipolar output)
Current ranges (Current output)
D/A pacing
Offset error
Gain error
Differential nonlinearity
Integral nonlinearity
Relative accuracy
Monotonicity
Gain drift (internal referece)
Offset drift
Slew rate
Current drive (voltage outputs)
Voltage compliance (current out)
Output resistance (OP-07)
Output short-circuit duration
Miscellaneous

AD754812-bits
2 voltage or current output±5 V, ±10 V and user range (determined by value of external reference between-10 V and +10 V) jumper selectable
0 to 5 V, 0 to 10 V and user range (determined by the value of the externalreference between -10 V and +10 V) jumper selectable
4 to 20 mA (using on-board or external -5 V reference)
Software paced
Adjustable to zero
Adjustable to zero
±0.5 LSB max±0.5 LSB max±0.5 LSB (0.01%) max
Guaranteed monotonic to 12 bits over temperature±25 ppm/°C max±3 ppm/°C max
0.3 V/µs typical±5 mA min8 to 36 V
0.1 ohm max
40 mA min continuous Double buffered output latches 7 kOhm min reference input resistancePower consumption
Table 2. Power consumption specifications
Parameter

Conditions

Specification

Supply current+5 V supply+12 V supply-12 V supply

135 mA typ, 300 mA max
15 mA typ, 25 mA max
25 mA typ, 35 mA max

15

CIO-DAC02 User's Guide

Specifications

Environmental
Table 3. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 °C-55 to 125 °C
0 to 90% non-condensing

Main connector and pin out
Table 4. Connector specifications
Connector typeCompatible cables
Compatible accessory productwith the C25FM-x cable25-pin "D" connector
C25FM-x
DMCON-25 (D-connector, D-shell, and termination pins to construct your own cable)
CIO-MINI25
Table 5. Connector pin out

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13

Signal Name
GND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
LLGND
+5V PC

Pin
14
15
16
17
18
19
20
21
22
23
24
25

16

Signal Name
-10V REF OUT-5V REF OUT
D/A1 VREF Input
D/A1 Bipolar
D/A1 Unipolar
D/A1 4-20 mA-10V REF OUT-5V REF OUT
D/A0 VREF Input
D/A0 Bipolar
D/A0 Unipolar
D/A0 4-20 mA

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-DAC02
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