USB-DIO32HS-OEM
High-Speed Digital I/O

User's Guide

Document Revision 2
January 2016
© Copyright 2016

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.
© 2016 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 USB-DIO32HS-OEM.docx

Table of Contents
Preface

About this User's Guide ....................................................................................................................... 4
What you will learn from this user's guide ......................................................................................................... 4
Conventions in this user's guide ......................................................................................................................... 4
Where to find more information ......................................................................................................................... 4
Chapter 1

Introducing the USB-DIO32HS-OEM ................................................................................................... 5
Functional block diagram ................................................................................................................................... 5
Chapter 2

Installing the USB-DIO32HS-OEM ....................................................................................................... 6
Unpacking........................................................................................................................................................... 6
Installing the software ........................................................................................................................................ 6
Installing the hardware ....................................................................................................................................... 6
Firmware updates ............................................................................................................................................... 6
Chapter 3

Functional Details ................................................................................................................................. 7
External components .......................................................................................................................................... 7
Header connectors............................................................................................................................................................. 8
Pull-up/down configuration .............................................................................................................................................. 8
LED indicators .................................................................................................................................................................. 9USB connector .................................................................................................................................................................. 9Signal connections .............................................................................................................................................. 9
Digital I/O ......................................................................................................................................................................... 9
Clock I/O .......................................................................................................................................................................... 9
Trigger input ....................................................................................................................................................................10
Data transfer output .........................................................................................................................................................10
User voltage power output ...............................................................................................................................................10
Ground .............................................................................................................................................................................10

Digital operations ............................................................................................................................................. 10
Digital output scanning ....................................................................................................................................................10

Triggering ......................................................................................................................................................... 11
Digital triggering..............................................................................................................................................................11
Pattern triggering .............................................................................................................................................................11

Mechanical drawing ......................................................................................................................................... 12
Chapter 4

Specifications ......................................................................................................................................13
Digital input/output........................................................................................................................................... 13External trigger ................................................................................................................................................. 13
Pattern trigger ................................................................................................................................................... 14
Clock input/output ............................................................................................................................................ 14
Memory ............................................................................................................................................................ 15Power ................................................................................................................................................................ 15
USB .................................................................................................................................................................. 15
Environmental .................................................................................................................................................. 15
Mechanical ....................................................................................................................................................... 15
Header connector .............................................................................................................................................. 16
Header pinout ................................................................................................................................................... 16

3

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide describes the Measurement Computing USB-DIO32HS-OEM data acquisition device and lists
device specifications.

Conventions in this user's guide
For more information
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.
bold text

Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.

italic text

Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.

Where to find more information
Additional information about the USB-DIO32HS-OEM is available on our website at www.mccdaq.com. You
can also contact Measurement Computing Corporation by phone, fax, or email with specific questions.


Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: techsupport@mccdaq.com
Phone: 508-946-5100 and follow the instructions for reaching Tech Support

For international customers, contact your local distributor. Refer to the International Distributors section on our
website at www.mccdaq.com/International.

4Chapter 1

Introducing the USB-DIO32HS-OEM
The USB-DIO32HS-OEM is a USB 2.0 high-speed synchronous digital I/O device that provides the following
features:










32 bits of bidirectional TTL digital I/O
Pattern detection and generation
Input scan rate up to 8 MS/s
Output update rate up to 8 MS/s
Independent input and output scan clocks
24 mA source, 10 mA sink output current
External trigger input
Board-only form factor
Header connectors for field wiring connections

The USB-DIO32HS-OEM is powered by the +5 volt USB supply from your computer; no external power isrequired.

Functional block diagram
USB-DIO32HS-OEM functions are illustrated in the block diagram shown here.

Figure 1. Functional block diagram

5Chapter 2

Installing the USB-DIO32HS-OEM
UnpackingAs with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the device 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.
Contact us immediately if any components are missing or damaged.

Installing the software
Refer to the MCC DAQ Quick Start for instructions on installing the software on the MCC DAQ CD. Refer tothe device product page on the Measurement Computing website for information about the included andoptional software supported by the USB-DIO32HS-OEM.
Install the software before you install your device
The driver needed to run the USB-DIO32HS-OEM is installed with the software. Therefore, you need to install
the software package you plan to use before you install the hardware.

Installing the hardware
To connect a USB-DIO32HS-OEM to your system, turn on your computer and connect a USB cable to anavailable USB port on the computer or to an external USB hub connected to the computer. Connect the otherend of the USB cable to the USB connector on the device. No external power is required. A green Status LED
turns on when power is applied.
When you connect the device for the first time, a Found New Hardware dialog opens when the operating
system detects the device. The dialog closes after the device is installed.

Firmware updatesYour DAQ device contains firmware that can be updated in the field if required. Firmware is available fordownload at www.mccdaq.com/firmware.aspx.We recommend that you check this page periodically to see if an
update to your device firmware is available.

6Chapter 3

Functional Details
External components
USB-DIO32HS-OEM has the following components, as shown in Figure 2:Header connectors (2)Pull-up/down jumpers (4)LED indicators (2)USB connector

Figure 2. USB-DIO32HS-OEM components
12
3
4

Header connector pin 1 to 28 (Port 0)
Pull-up/down jumper W4
Pull-up/down jumper W3
Pull-up/down jumper W5

5
6
7
8

7

Pull-up/down jumper W6
Header connector pin 29 to 56 (Port 1)
LED indicators (2)USB connectorUSB-DIO32HS-OEM User's Guide

Functional Details

Header connectors
The header connectors provide the following connections:









32 digital I/O bits configured as two 16-bit ports (P0D0 to P1D15)
External input scan clock input (ICLKI) and output (ICLKO) for digital inputs
External output scan clock input (OCLKI) and output (OCLKO) for digital outputs
External trigger input (TRIG)
Data transfer output (TXACK)Power output (+VO)
Digital ground (GND)

The USB-DIO32HS-OEM pinout is shown below. Refer to Figure 2 on page 7
Pin
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

Signal name
P0D0
P0D1
GND
P0D2
P0D3
GND
P0D4
P0D5
GND
P0D6
P0D7
GND
P0D8
P0D9
GND
P0D10
P0D11
GND
P0D12
P0D13
GND
P0D14
P0D15
GND
ICLKI
OCLKI
TRIG
RSVD

Pin description
Port 0 bit 0
Port 0 bit 1
Digital ground
Port 0 bit 2
Port 0 bit 3
Digital ground
Port 0 bit 4
Port 0 bit 5
Digital ground
Port 0 bit 6
Port 0 bit 7
Digital ground
Port 0 bit 8
Port 0 bit 9
Digital ground
Port 0 bit 10
Port 0 bit 11
Digital ground
Port 0 bit 12
Port 0 bit 13
Digital ground
Port 0 bit 14
Port 0 bit 15
Digital ground
Input scan clock input
Output scan clock input
External trigger input
Reserved for future use

Pin
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

Signal name
P1D0
P1D1
GND
P1D2
P1D3
GND
P1D4
P1D5
GND
P1D6
P1D7
GND
P1D8
P1D9
GND
P1D10
P1D11
GND
P1D12
P1D13
GND
P1D14
P1D15
GND
ICLKO
OCLKO
+VO
TXACK

Pin description
Port 1 bit 0
Port 1 bit 1
Digital ground
Port 1 bit 2
Port 1 bit 3
Digital ground
Port 1 bit 4
Port 1 bit 5
Digital ground
Port 1 bit 6
Port 1 bit 7
Digital ground
Port 1 bit 8
Port 1 bit 9
Digital ground
Port 1 bit 10
Port 1 bit 11
Digital ground
Port 1 bit 12
Port 1 bit 13
Digital ground
Port 1 bit 14
Port 1 bit 15
Digital ground
Input scan clock output
Output scan clock output
User voltage output
Handshaking transfer output

Pull-up/down configuration
Unconnected inputs are pulled low to 0 V through 47 kΩ resistors via onboard jumpers W3 to W6.
W3 configures port 0 bit 0 to bit 7
W4 configures port 0 bit 8 to bit 15
W5 configures port 1 bit 0 to bit 7W6 configures port 1 bit 8 to bit 15

The pull-up/down voltage is common to all 47 kΩ resistors. Refer to Figure 2 on page 7 for the location of eachjumper.

8

USB-DIO32HS-OEM User's Guide

Functional Details

Each jumper is configured for pull-down by default (see Figure 3). Jumper pins 1 and 2 if you want to configure
the inputs to pull-high (+5V).

Figure 3. Pull-up/down jumper, default

For more information about digital signal connections
For general information about digital signal connections and digital I/O techniques, refer to the Guide to DAQ
Signal Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).

LED indicators
The USB-DIO32HS-OEM has two LED indicators that indicate the status of power and data. The LEDs arestacked one above the other.
The Status LED (top) turns on when power is applied.
The Activity LED (bottom) blinks when data is being transferred.

USB connector
The USB connector provides +5 V power and communication. No external power supply is required.

Signal connections
Digital I/O
The USB-DIO32HS-OEM provides 32 digital I/O bits that are configured as two ports of 16-bits each. You canconnect up to 16 DIO lines to port 0 (P0D0 through D0D15), and up to 16 DIO lines to port 1 (P1D0 throughP1D15). Each digital bit is individually configurable for input or output. Refer to Digital operations on page 10
for more information.

Clock I/O
You can pace input scanning operations using the onboard input scan clock or with an external signal connected
to ICKLI. The input clock frequency is 8 MHz, maximum.
When the internal input clock paces operations, a duty cycle of 50% is maintained on ICLKO. When an external
clock is used, the signal is output immediately after the external clock input is received.
Input pacer clock connections:

ICLKI: accepts an external scan clock signal to pace the internal input scan.
ICLKO: outputs the internal input scan clock. When externally clocked, this pin outputs a delayed versionof the ICLKI signal. The delay is no more than 83.33 ns, and is due to the time required for the signal topropagate from the external clock to the device's FPGA before it is output.
You can pace the output pattern generation using the onboard output scan clock or with an external signal
connected to OCKLI. The output clock frequency is 8 MHz, maximum.
Output pacer clock connections:

OCLKI: accepts an external scan clock signal to pace the output scan.
OCLKO: outputs the internal output scan clock. When externally clocked, this pin outputs a delayed versionof the OCLKI signal. The delay is no more than 83.33 ns, and is due to the time required for the signal topropagate from the external clock to the device's FPGA before it is output.

9USB-DIO32HS-OEM User's Guide

Functional Details

Trigger input
The TRIG terminal is an external digital trigger input that can be used to trigger digital input or output scans.

Data transfer output
The TXACK pin is a timing output that may be used when transferring data to an external peripheral device or toa second USB-DIO32HS-OEM. Refer to the Digital output scanning section below for more information.

User voltage power output
The +VO terminal can output up to 10 mA maximum. You can use this terminal to supply power to external
devices or circuitry.
Caution! The +VO terminal is an output. Do not connect to an external power supply or you may damage
the device and possibly the computer.

GroundThe digital ground (GND) pins provide a common ground for all I/O signals and the power terminal.

Digital operations
When performing software polling operations, the port can contain any combination of input or output bits.
When performing hardware-paced output scans, all bits in the port must be set for output. For input scans,however, any bits in the port that are configured for output are ignored. Since each port is configured
independently, both software polling and hardware scanning operations can be performed at the same time.
The digital I/O terminals can detect the state of any TTL-level input. Refer to the schematic shown in Figure 4.

Figure 4. Schematic showing switch detection by digital channel DIO0

When set to the +5 V input, DIO0 reads TRUE (1). When switched to GND, DIO0 reads FALSE (0).

Digital output scanning
Digital outputs can source 24 mA and sink 10 mA.
Either port can output a 16-bit digital pattern. The pattern is updated at a rate up to 8 MS/s, and clocked using
the output scan clock.
Use both ports to output a 32-bit digital pattern. Data from one port is read and stored in the FIFO buffer until
the second port is read. Both ports are output simultaneously to the pins on the rising edge of the next pacer
clock signal.
The USB-DIO32HS-OEM utilizes a delay between the output scan clock and the TXACK pin output. Wheneach data value of an output scan is output, the TXACK pin is updated after a lag of 83.33 nS. This delay allows
an external device that is accepting the data to know that the data is stable at that point, and ensures a coherent
data transfer between devices.
When transferring data to a second (slave) USB-DIO32HS-OEM, the input scan clock on the slave device ispaced by the TXACK pin on the master device to ensure that the output data of the master is valid when
acquired by the slave.

10USB-DIO32HS-OEM User's Guide

Functional Details

Triggering
The USB-DIO32HS-OEM supports digital and pattern triggering to start a scan.

Digital triggering
The TRIG pin is used for external TTL-level triggering, and can be used to trigger input or output scans. Trigger
latency is less than 1 µs. The trigger mode is software-selectable for edge or level sensitive, and high or low
logic. The default setting at power up is edge sensitive, rising edge. You can set up a repetitive trigger modewith software. When retrigger mode is enabled the trigger is automatically re-armed after it is activated.

Pattern triggering
You can start an input or output scan using a digital pattern trigger. Either port 0 (default) or port 1 can be used
for pattern triggering. The pattern represents the state of up to 16 bits on the port.
You specify the pattern and the trigger type with software. Supported trigger types are Above Pattern, Below
Pattern, Equal Pattern, and Not Equal Pattern. The scan begins when the trigger conditions are met.
The base clock is fixed at 96 MHz (10.416 ns). The trigger pattern must be held for three base clock cycles(31.25 ns) to ensure that it is properly detected. The trigger latency is 1 scan clock period + 8 base clock cycles(83.328 ns).
Signals after the trigger are ignored by the trigger circuit. You can increase the clock frequency up to 8 MHz tochange how fast a pattern is detected.
Mask option
Use a bitmask to specify which bits to include or exclude from the pattern to detect. To include a bit in thepattern, sets its value to 1. To exclude a bit from the pattern, sets its value to 0. Refer to the pattern and mask
values shown in Figure 5 and Figure 6.
In Figure 5 all mask bits are set to 1, so all of the bits are included in the pattern to detect.

Figure 5. Trigger mask with all bits included

In Figure 6 all mask bits are excluded except bits 4 to 7. The result of this operation is that only bits 4 through 7
are included in the pattern to detect.

Figure 6. Trigger mask with some bits excluded

11USB-DIO32HS-OEM User's Guide

Functional Details

Mechanical drawing

Figure 7. USB-DIO32HS-OEM circuit board dimensions

12

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.

Digital input/output
Table 1. Digital I/O specifications
Parameter

Specification

Digital type
Number of I/O
Configuration
Pull-up configuration

TTL
32 (2 ports of 16 bits)
Bit-configurable as input (power on default) or output
Each port has two 47 kΩ resistors configurable as a pull-up or pull-down (default) withan internal jumper. Each jumper configures 8 digital bits.
 Jumper W3 configures port 0 bit 0 to bit 7
 Jumper W4 configures port 0 bit 8 to bit 15
 Jumper W5 configures port 1 bit 0 to bit 7
 Jumper W6 configures port 1 bit 8 to bit 15
33 to 8000 port reads/writes or single bit reads/writes per second typical,
system dependent.
0.022 Hz to 8 MHz, based on the internal clock speed of 96 MHz

Digital I/O transfer rate(system-paced, asynchronous)
Digital I/O transfer rate
(synchronous)
Digital input pacing
Digital input trigger source
Digital output pacing
Digital output trigger source
Input high voltage
Input low voltage
Output high voltage
Output low voltage
Output current

Onboard clock, external input scan clock (ICLKI)
External single channel digital trigger (TRIG) or Pattern Detection
Onboard clock, external output scan clock (OCLKI)
External single channel digital trigger (TRIG) or Pattern Detection
2.0 V min
5.0 V absolute max
0.8 V max
0 V recommended min
4.4 V min (IOH = –50 µA)
2.96 V min (IOH = –24 mA)
0.1 V max (IOL = 50 µA)
0.77 V max (IOL = 10 mA)
24 mA source, 10 mA sink max per pin, constrained to 384 mA across all output pins
(digital outputs, pacer clock outputs, and +VO)

External trigger
Table 2. Digital trigger specifications
Parameter

Specification

Trigger source
Trigger mode
Retrigger mode
Trigger latency
Trigger pulse width
Input type

External digital; TRIG terminal
Software-selectable for edge or level sensitive, rising or falling edge, high or low level.
Trigger is rearmed after each trigger event
100 ns max
100 ns min
Schmitt trigger, 47 kΩ pull-down to ground with 33 Ω in series

13USB-DIO32HS-OEM User's Guide

Specifications

Parameter

Specification

Schmitt trigger hysteresis

0.76 V typ
0.4 V min
1.2 V max
1.74 V typ
1.3 V min2.2 V max
5.5 V absolute max
0.98 V typ
0.6 V min
1.5 V max
–0.5 V absolute min
0 V recommended min

Input high voltage threshold

Input high voltage limit
Input low voltage threshold

Input low voltage limit

Pattern trigger
Table 3. Pattern trigger specifications
Parameter

Specification

Trigger source
Trigger types
Trigger stability
Trigger bit width
Trigger latency

Port 0 or Port 1
Above pattern, Below pattern, Equal pattern, or Not equal pattern
Digital port must be stable for 31.25 ns to be recognized as a pattern
Up to 16, adjustable through bitmask
Up to 1 scan period

Clock input/output
Table 4. Clock I/O specifications
Parameter

Specification

Terminal names
Terminal type

ICLKI, ICLKO, OCLKI, OCLKOICLKI: Input scan clock input, active on rising edge
ICLKO: Input scan clock output, power on default is 0V, active on rising edge
OCLKI: Output scan clock input, active on rising edge
OCLKO: Output scan clock output, power on default is 0V, active on rising edge
8 MHz, max
10.417 ns min
Schmitt trigger, 47 kΩ pull-down to ground with 33 Ω in series
0.76 V typ
0.4 V min
1.2 V max
1.74 V typ
1.3 V min2.2 V max
5.5 V absolute max
0.98 V typ
0.6 V min
1.5 V max
–0.5 V absolute min
0 V recommended min
8 MHz, max
Minimum 62.5 ns at 8 MHz, but varies according to the sample rate; always maintains
a 50% duty cycle when using the internal clock. When using the external clock, itfollows the external clock input.

Input clock frequency
Input clock pulse width
Input type
Input Schmitt trigger hysteresis

Input high voltage threshold

Input high voltage limit
Input low voltage threshold

Input low voltage limit
Output clock frequency
Output clock pulse width14

USB-DIO32HS-OEM User's Guide

Output high voltage
Output low voltage
Output current
Handshaking

Specifications

4.4 V min (IOH = –50 µA)
2.96 V min (IOH = –24 mA)
0.1 V max (IOL = 50 µA)
0.77 V max (IOL = 10 mA)
24 mA source, 10 mA sink max per pin, constrained to 384 mA across all output pins
(digital outputs, pacer clock outputs, and +VO)
The TXACK output will have an 83.33 ns delay from the OCLKO signal to ensure
coherent data transfers between devices.

MemoryTable 5. Memory specifications
Parameter

Specification

FIFO
Non-volatile EEPROM

8 KS
32 KB (10 KB firmware storage, 22 KB user data)

Power
Table 6. Power specifications
Parameter

Condition

Specification

Supply current, USB source

During enumeration
After USB enumeration
After USB enumeration
After USB enumeration< 100 mA
< 500 mA
5 V, ± 5%24 mA max per pin, constrained to 384 mA across all
output pins (digital outputs, pacer clock outputs, and +VO)

+VO voltage output range+VO output current

USB
Table 7. USB specifications
Parameter

Specification

USB device type
Device compatibility
USB cable type

USB 2.0 (high-speed)
USB 1.1, USB 2.0, USB 3.0
A-B cable, UL type AWM 2725 or equivalent. (Min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
3 m (9.84 ft) max

USB cable length

Environmental
Table 8. Environmental specifications
Parameter

Specification

Operating temperature range
Storage temperature range
Humidity

0 °C to 50 °C–40 °C to 70 °C
0% to 90% non-condensing

Mechanical
Table 9. Mechanical specifications
Parameter

Specification

Dimensions (L × W × H)

119.38 × 86.36 × 15.24 mm (4.70 × 3.40 × 0.60 in.)15

USB-DIO32HS-OEM User's Guide

Specifications

Header connector
Table 10. Header connector specifications
Parameter

Specification

Connector typeTwo 1 × 28 pin 0.1 in. pitch headers

Header pinout
Table 11. Header pinout
Pin
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

Signal name
P0D0
P0D1
GND
P0D2
P0D3
GND
P0D4
P0D5
GND
P0D6
P0D7
GND
P0D8
P0D9
GND
P0D10
P0D11
GND
P0D12
P0D13
GND
P0D14
P0D15
GND
ICLKI
OCLKI
TRIG
RSVD

Pin description
Port 0 bit 0
Port 0 bit 1
Digital ground
Port 0 bit 2
Port 0 bit 3
Digital ground
Port 0 bit 4
Port 0 bit 5
Digital ground
Port 0 bit 6
Port 0 bit 7
Digital ground
Port 0 bit 8
Port 0 bit 9
Digital ground
Port 0 bit 10
Port 0 bit 11
Digital ground
Port 0 bit 12
Port 0 bit 13
Digital ground
Port 0 bit 14
Port 0 bit 15
Digital ground
Input scan clock input
Output scan clock input
External trigger input
Reserved for future use

Pin
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

16

Signal name
P1D0
P1D1
GND
P1D2
P1D3
GND
P1D4
P1D5
GND
P1D6
P1D7
GND
P1D8
P1D9
GND
P1D10
P1D11
GND
P1D12
P1D13
GND
P1D14
P1D15
GND
ICLKO
OCLKO
+VO
TXACK

Pin description
Port 1 bit 0
Port 1 bit 1
Digital ground
Port 1 bit 2
Port 1 bit 3
Digital ground
Port 1 bit 4
Port 1 bit 5
Digital ground
Port 1 bit 6
Port 1 bit 7
Digital ground
Port 1 bit 8
Port 1 bit 9
Digital ground
Port 1 bit 10
Port 1 bit 11
Digital ground
Port 1 bit 12
Port 1 bit 13
Digital ground
Port 1 bit 14
Port 1 bit 15
Digital ground
Input scan clock output
Output scan clock output
User voltage output
Data transfer output

Measurement Computing Corporation
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Fax: (508) 946-9500
E-mail: info@mccdaq.com
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