CIO-DAC08
Analog Output Board
User’s Guide
Document Revision 2, January, 2007
© Copyright 2007, Measurement Computing Corporation
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HM CIO-DAC08.doc
3
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4
Table of Contents
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-DAC08 .................................................................................................................7
Overview: CIO-DAC08 features........................................................................................................................7
Software features................................................................................................................................................7
Chapter 2
Installing the CIO-DAC08 .....................................................................................................................8
What comes with your CIO-DAC08 shipment?.................................................................................................8
Hardware .......................................................................................................................................................................... 8
Additional documentation ..................................................................................................................................8
Optional components..........................................................................................................................................8
Unpacking the CIO-DAC08 ...............................................................................................................................9
Installing the software ........................................................................................................................................9
Configuring the CIO-DAC08 .............................................................................................................................9
Base address switch .......................................................................................................................................................... 9
Wait state jumper.............................................................................................................................................................11
Individual / simultaneous update jumper .........................................................................................................................11
Power up and reset jumper...............................................................................................................................................12
Analog output range switch .............................................................................................................................................12
Installing the CIO-DAC08 ...............................................................................................................................12
Connecting the board for I/O operations ..........................................................................................................13
Connectors, cables – main I/O connector ........................................................................................................................13
Pinout – main I/O connectors ..........................................................................................................................................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
Signal connections............................................................................................................................................16
Chapter 5
Specifications......................................................................................................................................17
Analog output ...................................................................................................................................................17
Power consumption ..........................................................................................................................................17
Environmental ..................................................................................................................................................18
Main connector and pin out..............................................................................................................................18
5
Preface
About this User's Guide
What you will learn from this user's guide
This user's guide explains how to install, configure, and use the CIO-DAC08 board so that you get the most out
of 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 are
reading.
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-DAC08.
MCC's Specifications: CIO-DAC08 (the PDF version of the Specifications chapter in this guide) is
available on our web site at www.mccdaq.com/pdfs/CIO-DAC08.pdf
MCC's Quick Start Guide is available on our web site at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf
MCC's Guide to Signal Connections is available on our web site at
www.mccdaq.com/signals/signals.pdf.
MCC's Universal Library User's Guide is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf
MCC's Universal Library Function Reference is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-functions.pdf
MCC's Universal Library for LabVIEW
www.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf
™
User’s Guide is available on our web site at
.
.
.
.
.
CIO-DAC08 User's Guide (this document) is also available on our web site at
www.mccdaq.com/PDFmanuals/CIO-DAC08.pdf
.
6
Chapter 1
Introducing the CIO-DAC08
Overview: CIO-DAC08 features
The CIO-DAC08 has 8 channels of 12-bit analog output (one D/A per channel). Analog outputs are dual-DAC
AD7273s (two analog outputs per chip), with each output buffered by an OP07. The CIO-DAC08 is compatible
with MetraByte's DDA-06 but lacks digital outputs. Software designed for the DDA-06 will operate the analog
outputs.
Analog output ranges are switch-selectable for a Bipolar or Unipolar range. Bipolar ranges are ±10 V, ±5 V,
and ±2.5 V. Unipolar ranges are 0 to 10 V, 0 to 5 V, and 0 to 2.5 V.
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)
is written.
Each analog output pair is jumper-selectable for either individual or simultaneous update. When a DAC pair is
set for simultaneous update, writing new digital values to the DAC's control register does not update the DAC's
voltage output. Update of the output occurs only after a READ from the board's addresses.
The board also features a wait state generator that you enable with an on-board jumper.
Software features
For information on the features of InstaCal and the other software included with your CIO-DAC08, 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
Installing the CIO-DAC08
What comes with your CIO-DAC08 shipment?
The following items are shipped with the CIO-DAC08.
Hardware
CIO-DAC08
Chapter 2
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
the software you received with your CIO-DAC08 and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.
). This booklet supplies a brief description of
Optional components
You can also order the following MCC products to use with your CIO-DAC08.
Cables
C37FF-x
Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the CIO-DAC08. Refer to Field
wiring, signal termination, and conditioning on page 14 for a complete list of compatible accessory
products.
C37FFS-x
8
CIO-DAC08 User's Guide Installing the CIO-DAC08
Unpacking the CIO-DAC08
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the CIO-DAC08 from its packaging, ground yourself using a wrist strap or by
simply 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 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
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-Software-
Quick-Start.pdf.
Configuring the CIO-DAC08
The CIO-DAC08 has one base address switch, one bank of gain switches for each analog output channel, a
simultaneous update jumper for each DAC pair, a "power-up state" selection jumper, and one wait state jumper
which you must set before installing the board in your computer. The InstaCal calibration and test program
included with the CIO-DAC08 will show you how to set the switches. Run InstaCal before you open your
computer and install the board.
The CIO-DAC08 is shipped with the factory-default settings listed below.
Factory-configured default settings
Board label Switch/jumper description Default setting
ADDRESS
WAIT STATE
XFER
0 through 7
PWR UP
DIP switch for setting the base address 300h (768 decimal)
Jumper to enable a wait state OFF position
Jumper to select simultaneous or single channel
update for each DAC channel pair
DIP switches to set the analog output range ±5V
Jumper to select the power up and reset state STD position — standard (undefined
Single channel update
output values at power up)
Before installing the CIO-DAC08 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 CIODAC08 board.
Base address switch
Before you install the CIO-DAC08 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 the correct 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.
9
CIO-DAC08 User's Guide Installing the CIO-DAC08
A
A8A7A6A
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 Fi shows the settings for the factory-default base
gure 1
address of 300 hex.
98765
SW
9
HEX
200
100
80
40
5
Figure 1. CIO-DAC08 base address switches
In the default configuration shown in Fi , addresses 9 and 8 are DOWN, and all others are UP.
gure 1
20
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 Function
000-00F 8237 DMA #1 2C0-2CF EGA
020-021 8259 PIC#1 2D0-2DF EGA
040-043 8253 Timer 2E0-2E7 GPIB (AT)
060-063 8255 PPI (XT) 2E8-2EF Serial Port
060-064 8742 Controller (AT) 2F8-2FF Serial Port
070-071 CMOS RAM & NMI mask (AT) 300-30F Prototype card
080-08F DMA page registers 310-31F Prototype card
0A0-0A1 8259 PIC #2 (AT) 320-32F Hard disk (XT)
0A0-0AF NMI mask (XT) 378-37F Parallel printer
0C0-0DF 8237 #2 (AT) 380-38F SDLC
0F0-0FF 80287 numeric CO-P (AT) 3A0-3AF SDLC
1F0-1FF Hard disk (AT) 3B0-3BB MDA
200-20F Game control 3BC-3BB Parallel printer
210-21F Expansion unit (XT) 3C0-3CF EGA
238-23B Bus mouse 3D0-3DF CGA
23C-23F ALT bus mouse 3E8-3EF Serial port
270-27F Parallel printer 3F0-3F7 Floppy disk
2B0-2BF EGA 3F8-3FF Serial port
The CIO-DAC08 Base switch can be set for an address in the range of 000-3E0, so it should not be hard to find
a free address area for your CIO-DAC08. 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.
10
CIO-DAC08 User's Guide Installing the CIO-DAC08
)
Wait state jumper
The CIO-DAC08 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-DAC08 board so that signals from slow devices (chips) will
be valid.
This jumper is shown in configured for OFF (wait state is disabled). Figure 2
ON
Figure 2. Wait State jumper
OFF
The wait state generator on the CIO-DAC08 is only active when the CIO-DAC08 is being accessed. Your PC
will not be slowed down in general by using the wait state.
Individual / simultaneous update jumper
The analog output chips on the CIO-DAC08 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 a
read (XFER), or individually updated when the MSB register is written.
The top of each jumper on the CIO-DAC08 board is labeled
indicate the pair of channels that the jumper selects (12, 34, 56, or 78). For example, "12" indicates channels
one and two.
Figure 3
shows the jumper block configured for each update mode.
XFER
# #
(Update)
XFER. Below each jumper are two numbers that
XFER
# #
(Update
Individual updates
per DAC
(two channels)
Figure 3. Individual / simultaneous update jumper
Simultaneous updates
from all DACS
jumpered to XFER
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 simultaneous
transfers occur when any of the CIO-DAC08 addresses are read (and the jumpers are in the
position).
When jump ered to the channel numbers, the DAC channel pair is individually updated.
XFER
11
CIO-DAC08 User's Guide Installing the CIO-DAC08
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-DAC08 board is powered up or reset. This jumper is shown in . Figure 4
PWR UP
ZERO STD
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.
Analog output range switch
The analog output voltage range of each channel can be set with a set of five ganged DIP switches. The switch
blocks are located on the board below the calibration potentiometers. The switch blocks are labeled
individual switches are labeled
1 through 5.
0 to 7, and
Set the switches for each individual channel as shown in Figure 5.
Range
10
±
5.0
±
2.5
±
0-10
0-5
0-2.5
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 the
row beside the range you want to set.
The switch shown in Fi is configured for ±5V range (switch settings UP>DN>DN>UP>DN).
gure 5
1
UP
UP
UP
DN
DN
DN
2
DN
DN
DN
UP
UP
UP
4
DN
UP
DN
DN
UP
DN
5
DN
DN (shown)
UP
DN
DN
UP
Installing the CIO-DAC08
After you configure the board's switches and jumpers, you can install the CIO-DAC08 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.
12
CIO-DAC08 User's Guide Installing the CIO-DAC08
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/DAQ-
Software-Quick-Start.pdf for information on how to initially set up and load InstaCal.
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 type 37-pin male D connector
Compatible cables
Compatible accessory products with
the C37FF-x cable or C37FFS-x cable
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).
C37FF-x
C37FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to construct your
own cable)
CIO-MINI37
CIO-TERMINAL
Pinout – main I/O connectors
The CIO-DAC08 I/O connector is a standard 37-pin male D connector that is accessible through the PC/AT
expansion bracket.
-12V 19
GND 18
+12V 17
NC 16
NC 15
NC 14
NC 13
NC 12
NC 11
NC 10
NC 9
D/A OUT 7 8
D/A OUT 6 7
D/A OUT 5 6
D/A OUT 4 5
D/A OUT 3 4
D/A OUT 2 3
D/A OUT 1 2
D/A OUT 0 1
37 GND
36 +5V
35 LLGND
34 LLGND
33 LLGND
32 LLGND
31 LLGND
30 LLGND
29 LLGND
28 LLGND
27 LLGND
26 LLGND
25 LLGND
24 LLGND
23 LLGND
22 LLGND
21 LLGND
20 LLGND
Figure 6. I/O connector pin-out
13
CIO-DAC08 User's Guide Installing the CIO-DAC08
The analog outputs of the CIO-DAC08 are two-wire hook-ups. Always use low-level ground (LLGND) as the
ground reference for all analog hook-ups.
Cabling
The red stripe
1
20
37
19
identifies pin # 1
Figure 7. C37FF-x cable
1
20
37
19
Figure 8. C37FFS-x cable
Field wiring, signal termination, and conditioning
1
19
20
37
1
20
37
19
You can use the following cabling, screw termination, and signal conditioning products with the CIO-DAC08.
CIO-MINI37 – 37-pin screw terminal board. Details on this product are available at
www.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 product
are available on our web site at www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=102&pf_id=282
.
DFCON37 – Connector kit that includes a 37-pin female D-connector, D-shell, 37 crimp pins, and cable
termination kit to construct your own cable. Details on this product are available on our web site at
www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=103&pf_id=304
.
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 register
level 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 web
site 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 our
Universal 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-DAC08
and CIO-DAC16. This document is available on our website at www.mccdaq.com/registermaps/RegMapCIO-
DAC08_16.pdf.
15
Chapter 4
Functional Details
Signal connections
Each of the CIO-DAC08 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
just below the calibration potentiometers for that channel.
At the full rated output swing of ±10V, each channel is capable of sinking or sourcing ±5 mA. That means a
load of 2K Ohms can be connected to each channel.
As the load resistance is raised from 2 K up to 10 MΩ or more, the output load on the DAC decreases. Any
load resistance greater than 2K is fine.
As the load resistance decreases, the output load increases. The OP07 responds by producing a lower output
voltage. If your CIO-DAC08 will not produce the output voltage specified by the code & range combination, it
is a good idea to check the load with an ohm meter.
Under normal circumstances you will not damage the OP07 by connecting the output to ground. If your
connection results in a failure of the OP07, chances are good that there was some potential at the connecting
point in addition to a load at ground or between 0 and 2 K Ω. Explore the point with a DVM before
reconnecting the CIO-DAC08 (and after replacing the OP07 of course). Connect the negative lead of the DVM
to any LLGND pin of the CIO-DAC08.
16
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog output
Table 1. Analog input specifications
Parameter Conditions Specification
D/A converter AD7237
Resolution 12-bits
Number of channels 8 voltage outputs
Output ranges ±10 V, ±5 V, ±2.5 V, 0 to 10 V, 0 to 5 V, 0 to 2.5 V.
Each channel independently switch selectable.
D/A pacing Software paced
Data transfer Software
Offset error Adjustable to zero
Gain error Adjustable to zero
Differential nonlinearity ±½ LSB max
Integral nonlinearity ±½ LSB max
Monotonicity 12-bits
Gain drift (DAC) ±30 ppm/°C max
Offset drift (DAC) ±3 ppm/°C max
Throughput System dependant
Slew rate 0.3 V/µS typical
Settling time 20 V step to .01% 70 µs
Current drive ±5 mA min
Output short-circuit duration Indefinite
Output coupling DC
Output resistance (OP-07) 0.1 ohm max
Miscellaneous
Double buffered output latches
Update DACs individually or simultaneously (jumper
selectable by pairs)
Power up and reset option, jumper selectable (revision 3 and
later): With jumper set to "ZERO", all DACs are cleared to
0 volts, ±32 mV, and DACs are set to simultaneous update
mode until first read. With jumper set to "STD", DAC output
on power-up is undefined.
Chapter 5
Power consumption
Table 2. Power consumption specifications
Parameter Conditions Specification
Supply current
+5 V supply 435 mA typical, 525 mA max
+12 V supply 75 mA typical, 98 mA max
-12 V supply 52 mA typical, 68 mA max
17
CIO-DAC08 User's Guide Specifications
Environmental
Table 3. Environmental specifications
Operating temperature range 0 to 70 °C
Storage temperature range -40 to 100 °C
Humidity 0 to 90% non-condensing
Main connector and pin out
Table 4. Connector specifications
Connector type 37-pin male "D" connector
Compatible cables C37FF-x
C37FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to construct your own cable)
Compatible accessory products
with the C37FF-x cable or
C37FFS-x cable
Pin Signal Name Pin Signal Name
1 D/A OUT 0 20 LLGND
2 D/A OUT 1 21 LLGND
3 D/A OUT 2 22 LLGND
4 D/A OUT 3 23 LLGND
5 D/A OUT 4 24 LLGND
6 D/A OUT 5 25 LLGND
7 D/A OUT 6 26 LLGND
8 D/A OUT 7 27 LLGND
9 NC 28 LLGND
10 NC 29 LLGND
11 NC 30 LLGND
12 NC 31 LLGND
13 NC 32 LLGND
14 NC 33 LLGND
15 NC 34 LLGND
16 NC 35 LLGND
17 +12V 36 +5V
18 GND 37 GND
19 +12V
CIO-MINI37
CIO-TERMINAL
Table 5. Connector pin out
18
Declaration of Conformity
Manufacturer: Measurement Computing Corporation
Address: 10 Commerce Way
Suite 1008
Norton, MA 02766
USA
Category: Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
CIO-DAC08
to which this declaration relates is in conformity with the relevant provisions of the following standards or
other 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
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