Measurement Computing PCIM DDA06/16 Analog Output & Digital I/O Board User's Guide

PCIM-DDA06/16
Analog Output and Digital I/O Board
User's Guide
Document Revision 7, March, 2007
© Copyright 2007, Measurement Computing Corporation
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Lifetime warranty: Every hardware product manufactured by Measurement Computing Corporation is warranted against
defects in materials or workmanship for the life of the product. Products found defective are repaired or replaced promptly.
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HM PCIV-DDA06-16.doc
ii
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iii
Table of Contents
Preface
About this User's Guide .......................................................................................................................v
What you will learn from this user's guide .........................................................................................................v
Conventions in this user's guide .........................................................................................................................v
Where to find more information.........................................................................................................................v
Chapter 1
Introducing the PCIM-DDA06/16...................................................................................................... 1-1
Overview: PCIM-DDA06/16 features............................................................................................................ 1-1
Software features ............................................................................................................................................ 1-1
PCIM-DDA06/16 block diagram ................................................................................................................... 1-2
Chapter 2
Installing the PCIM-DDA06/16.......................................................................................................... 2-1
What comes with your PCIM-DDA06/16 shipment?..................................................................................... 2-1
Hardware ....................................................................................................................................................................... 2-1
Additional documentation .............................................................................................................................. 2-1
Optional components ..................................................................................................................................................... 2-1
Unpacking the PCIM-DDA06/16................................................................................................................... 2-2
Installing the software .................................................................................................................................... 2-2
Configuring the PCIM-DDA06/16................................................................................................................. 2-2
Simultaneous transfer jumper ........................................................................................................................................ 2-3
Analog output range switch ........................................................................................................................................... 2-3
Installing the PCIM-DDA06/16 ..................................................................................................................... 2-4
Connecting the board for I/O operations ........................................................................................................ 2-4
Connectors, cables – main I/O connector ...................................................................................................................... 2-4
Pinout – main I/O connectors ........................................................................................................................................ 2-5
Cabling........................................................................................................................................................................... 2-5
Field wiring, signal termination, and conditioning ........................................................................................................ 2-6
Chapter 3
Programming and Developing Applications .................................................................................. 3-1
Programming languages ................................................................................................................................. 3-1
Packaged applications programs .................................................................................................................... 3-1
Register-level programming ........................................................................................................................... 3-1
Chapter 4
Specifications.................................................................................................................................... 4-1
Analog output ................................................................................................................................................. 4-1
Accuracy........................................................................................................................................................................ 4-1
Analog output drift ........................................................................................................................................................ 4-2
Digital input / output ...................................................................................................................................... 4-2
Power consumption ........................................................................................................................................ 4-2
Environmental ................................................................................................................................................ 4-2
Mechanical ..................................................................................................................................................... 4-2
Main connector and pin out............................................................................................................................ 4-3
iv
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 PCIM-DDA06/16 board so that you get the
most out of its analog output and digital I/O 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
Additional information about PCIM-DDA06/16 hardware is available on our website at www.mccdaq.com. You can
also contact Measurement Computing Corporation with specific questions.




Knowledgebase: kb.mccdaq.com
Phone: 508-946-5100 and follow the instructions for reaching Tech Support
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
v
Chapter 1
Introducing the PCIM-DDA06/16
Overview: PCIM-DDA06/16 features
The PCIM-DDA06/16 has six channels of analog output and 24 bits of digital input/output. Analog outputs are
from AD660 DACs, with each output buffered by an OP27. Digital I/O is performed with an 82C55.
Analog output ranges are either Bipolar or Unipolar. Bipolar ranges are ±10 V and ±5 V. Unipolar ranges are 0
to 10 V and 0 to 5 V. You set the analog output range for each DAC with an onboard switch. You set the
analog outputs for simultaneous or individual transfer with an on-board jumper.
The PCIM-DDA06/16 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 enough to switch other TTL
or similar inputs, but is inadequate to drive relays, LEDs or solid state relays without additional buffering.
The 82C55 digital I/O chip initializes all ports as inputs on power-up and reset.
The PCIM-DDA06/16 digital I/O is controlled by programming the 8255's mode register. There are three
possible modes. The most commonly used mode is Mode 0, simple input and output.
Software features
For information on the features of InstaCal and the other software included with your PCIM-DDA06/16, 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.
1-1
PCIM-DDA06/16 User's Guide
Introducing the PCIM-DDA06/16
PCIM-DDA06/16 block diagram
The PCIM-DDA06/16 board consists of two functional sections: analog output and digital I/O. The digital I/O
section consists of a single 82C55, and a 24-line digital I/O chip. The analog output section consists of six
identical circuits, each consisting of a DAC, an OP27 output buffer, and a gain range control switch. You can
control each analog output individually, or control all six outputs simultaneously.
PCIM-DDA06/16 functions are illustrated in the block diagram shown here.
8255
Digital I/O
Gain switch
Gain switch
AD660
OP27
Data Path and Control
Gain switch
AD660
OP27
Gain switch
AD660
OP27
Gain switch
AD660
C LO
OP27
FIRSTPORTB
FIRSTPORTA
AD660
C HI
OP27
Gain switch
AD660
OP27
P/O
37-pin conn.
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 PCI-DIO24
PCI Bus - (5V, 32-bits, 33 MHz)
1-2
Chapter 2
Installing the PCIM-DDA06/16
What comes with your PCIM-DDA06/16 shipment?
The following items are shipped with the PCIM-DDA06/16.
Hardware
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PCIM-DDA06/16
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 PCIM-DDA06/16 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 products to use with your PCIM-DDA06/16.
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Cables
C37FF-x
C37FFS-x
2-1
PCIM-DDA06/16 User's Guide
ƒ
Installing the PCIM-DDA06/16
Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the PCIM-DDA06/16. Refer to
Field wiring, signal termination, and conditioning on page 2-6 for a complete list of compatible accessory
products.
Unpacking the PCIM-DDA06/16
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PCIM-DDA06/16 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:
ƒ
ƒ
ƒ
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
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 PCIM-DDA06/16
The PCIM-DDA06/16 board has six banks of five switches for setting the gain for each DAC, and one
simultaneous transfer jumper to set the DAC update mode.
Each analog channel also has an associated gain and offset potentiometer for calibrating the channel, if
necessary.
The PCIM-DDA06/16 is shipped with the factory-default settings listed in Table 2-1.
Table 2-1. Switch/jumper factory-configured defaults
Board label
Switch/jumper description
Default setting
XFER or UPDATE
Simultaneous or individual DAC update
jumper
Analog output range DIP switches
UPDATE position (single channel update)
CH0 through CH5
(S1 through S6)
±5V
Before installing the PCIM-DDA06/16 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
PCIM-DDA06/16 board.
2-2
PCIM-DDA06/16 User's Guide
Installing the PCIM-DDA06/16
Simultaneous transfer jumper
The simultaneous transfer jumper controls whether to update DAC channels individually (default) or as a
group. This jumper is shown in Figure 2-1 configured in its default UPDATE position.
XFER
UPDATE
Figure 2-1. Simultaneous transfer jumper
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Set the jumper to XFER to update the DAC voltage outputs as a group.
New output data is held until all DACs are loaded with their new digital data.
The data for each DAC is simultaneously transferred and the DAC voltage outputs are updated as a group
when any of the addresses BADR3 + 0 to BADR3 + B are read. Writing new digital values to the DAC
control register does not cause an update of the DAC's voltage output. Update of the output occurs only
after the DAC control register address (any of the addresses BADR3 + 0 to BADR3 + B) is read
ƒ
In this way, the PCIM-DDA06/16 can be set to hold new values until all channels are loaded, then update
all six channels simultaneously. This is a very useful feature for multi-axis motor control.
Set the jumper to UPDATE to update the DAC voltage outputs individually.
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 output is not updated until both bytes (first
low byte, then high byte) are written to the DAC control register when the simultaneous transfer jumper is
in the default UPDATE position.
Analog output range switch
You set the analog output voltage range of each with a five-position DIP switch. The switches are located on
the board directly above the DACs and are labeled CH5 through CH0 (S6 through S1). Bipolar ranges are
±10 V and ±5 V. Unipolar ranges are 0 to 10 V and 0 to 5 V.
Figure 2-2 lists the range value and associated settings for each switch.
Range
1
2
3
4
5
±10
±5.0
0-10
0-5
D
D
U
U
U
U
D
D
D
D
U
U
U
D
U
D
D
U (shown)
D
U
Figure 2-2. Analog output range switch—one per DAC
To set a channel to a particular range, read the switch positions as U (up) or D (down) from left to right in the
row beside the range you want to set.
2-3
PCIM-DDA06/16 User's Guide
Installing the PCIM-DDA06/16
Installing the PCIM-DDA06/16
After you configure the board's switches and jumpers, install the PCIM-DDA06/16 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 PCI slot.
2.
Close your computer and turn it on.
If you are using an operating system with support for plug-and-play (such as Windows 2000 or
Windows XP), a dialog box pops up as the system loads indicating that new hardware has been detected. If
the information file for this board is not already loaded onto your PC, you will be prompted for the disk
containing this file. The MCC DAQ software contains this file. If required, insert the Measurement
Computing Data Acquisition Software CD and click OK.
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.
If your board has been powered-off for more than 10 minutes, allow your computer to warm up for at least
15 minutes before acquiring outputting analog data with this board. This warm-up period is required for the
board to achieve its rated accuracy. The high speed components used on the board generate heat, and it takes
this amount of time for a board to reach steady state if it has been powered off for more than 10 minutes.
Connecting the board for I/O operations
Connectors, cables – main I/O connector
Table 2-2 lists the board connector, applicable cables, and compatible accessory products.
Table 2-2. Board connector, cables, and accessory equipment
Connector type
Compatibility
Compatible cables
Compatible accessory products with
the C37FF-x cable or C37FFS-x cable
37-pin male D connector
Pinout identical to CIO-DDA06/16
ƒ C37FF-x
ƒ C37FFS-x
ƒ DFCON-37 (D-connector, D-shell, and termination pins to construct your
own cable)
CIO-MINI37
CIO-TERMINAL
SCB-37
SSR-RACK24
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).
2-4
PCIM-DDA06/16 User's Guide
Installing the PCIM-DDA06/16
Pinout – main I/O connectors
The PCIM-DDA06/16 I/O connector is a standard 37-pin male connector that is accessible through the PC/AT
expansion bracket.
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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
Figure 2-3. I/O connector pin-out
The analog outputs of the PCIM-DDA06/16 are two-wire hook-ups. Always use analog ground (LLGND) as
the ground reference for all analog hook-ups.
Cabling
The red stripe
identifies pin # 1
1
1
20
20
37
37
19
19
Figure 2-4. C37FF-x cable
2-5
PCIM-DDA06/16 User's Guide
Installing the PCIM-DDA06/16
1
1
20
20
19
37
19
37
Figure 2-5. C37FFS-x cable
Field wiring, signal termination, and conditioning
You can use the following cabling, screw termination, and signal conditioning products with the PCIMDDA06/16.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
CIO-MINI37 – 37-pin screw terminal board.
CIO-TERMINAL – 37-pin screw terminal board with on-board prototyping area.
SCB-37 – 37 conductor, shielded signal connection/screw terminal box that provides two independent 50pin connections.
SSR-RACK24 – 24-channel, solid-state relay mounting and interface board for digital signal conditioning.
ENC-MINI37 – Enclosure for the MINI37.
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.
2-6
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:
ƒ
ƒ
ƒ
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
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 PCIMDDA06/16. This document is available on our website at www.mccdaq.com/registermaps/RegMapPCIMDDA06-16.pdf.
3-1
Chapter 4
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
Voltage ranges
D/A pacing
Throughput
AD660BR
16 bits
6
±10 V, ±5, 0 to 10 V, 0 to 5 V. Ranges are switch selectable
Software paced
System-dependent. Using the Universal Library programmed output
function (cbAOut()) in a loop, in Visual Basic, a typical update rate
of 150 kHz (± 70 nS jitter) can be expected. The rate was measured on
a 500 MHz Pentium III based PC.
Data transfer
Programmed I/O
Monotonicity
Slew rate
Current drive
Output short-circuit duration
Power-on reset voltage
Miscellaneous
15 bits guaranteed over temperature
1.7 V/µs minimum, 2.4 V/µS typical.
±5 mA min
Indefinite
0 V ±15 mV
Double buffered output latches
Update DACs individually or simultaneously (jumper selectable)
Accuracy
Table 2. Analog output accuracy specifications
Absolute accuracy
Typical accuracy
Gain error
Offset error
Integral linearity error
Differential linearity error
±2.0 LSB max
±1.0 LSB max
Trimmable by potentiometer to 0
Trimmable by potentiometer to 0
±1.0 LSB max, ±0.5 LSB typ
±1.0 LSB max, ±0.5 LSB typ
Each PCIM-DDA06/16 is tested at the factory to assure the board’s overall error does not exceed ±2.0 LSB.
Total board error is a combination of gain, offset, integral linearity and differential linearity error. The
theoretical worst-case error of the board may be calculated by summing these component errors. Worst case
error is realized only in the unlikely event that each of the component errors are at their maximum level, and
causing error in the same direction.
Typical accuracy is derived directly from the various component typical errors. This typical, maximum error
calculation for the PCIM-DDA06/16 yields ±1.0 LSB.
4-1
PCIM-DDA06/16 User's Guide
Specifications
Analog output drift
Table 3. Worst case analog output drift specifications
Range
Gain Drift (LSB/°C)
Offset Drift (LSB/°C)
Overall Drift (LSB/°C)
±10.0 V
±5.00 V
0 to 10.0 V
0 to 5.0 V
1.0
4.0
1.9
6.0
0.3
0.3
0.3
0.3
1.3
4.3
2.2
6.3
Digital input / output
Table 4. DIO specifications
Digital type
Number of I/O
Configuration
Output high
Output low
Input high
Input low
Power-up / reset state
One 82C55
24
ƒ 2 banks of 8 and 2 banks of 4 or
ƒ 3 banks of 8 or
ƒ 2 banks of 8 with handshake
3.0 volts min @ -2.5mA
0.4 volts max @ 2.5mA
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 5. Power Consumption specifications
+5V supply
965mA typical, 1206mA maximum
Environmental
Table 6. Environmental specifications
Operating temperature range
Storage temperature range
Humidity
0 to 70 °C
-40 to 100 °C
0 to 95% non-condensing
Mechanical
Table 7. Mechanical specifications
Card dimensions
PCI half card: 174.4 mm (L) x 100.6 mm (W) x 11.65 mm (H)
4-2
PCIM-DDA06/16 User's Guide
Specifications
Main connector and pin out
Table 8. Main connector specifications
Connector type
Compatibility
Compatible cables
Compatible accessory products with the C37FF-x
cable or C37FFS-x cable
37-pin male D connector
Pinout identical to CIO-DDA06/16
ƒ C37FF-x
ƒ C37FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to
construct your own cable)
CIO-MINI37
CIO-TERMINAL
SCB-37
SSR-RACK24
ENC-MINI37
Table 9. Main connector pin out
Pin
Signal Name
Pin
Signal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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
4-3
Declaration of Conformity
Manufacturer:
Address:
Category:
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USA
Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
PCIM-DDA06/16
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 (1995), EN55024 (1998)
Emissions: Group 1, Class B
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EN55022 (1995): Radiated and Conducted emissions.
Immunity: EN55024
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EN61000-4-2 (1995): Electrostatic Discharge immunity, Criteria A.
EN61000-4-3 (1997): Radiated Electromagnetic Field immunity Criteria A.
EN61000-4-4 (1995): Electric Fast Transient Burst immunity Criteria A.
EN61000-4-5 (1995): Surge immunity Criteria A.
EN61000-4-6 (1996): Radio Frequency Common Mode immunity Criteria A.
EN61000-4-8 (1994): Power Frequency Magnetic Field immunity Criteria A.
EN61000-4-11 (1994): Voltage Dip and Interrupt immunity Criteria A.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
September, 2001. Test records are outlined in Chomerics Test Report #EMI3053.01.
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: [email protected]
www.mccdaq.com