USB-DIO24H/37
Digital Input/Output
User's Guide
Document Revision 3, January, 2011
© Copyright 2011, Measurement Computing Corporation
HM USB-DIO24H_37.doc
Your new Measurement Computing product comes with a fantastic extra —
Management committed to your satisfaction!
Thank you for choosing a Measurement Computing product—and congratulations! You own the finest, and you can now enjoy
the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our mission:
To provide PC-based data acquisition hardware and software that will save time and save money.
Simple installations minimize the time between setting up your system and actually making measurements. We offer quick and
simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system.
Limited Lifetime Warranty: Most MCC products are covered by a limited lifetime warranty against defects in materials or
workmanship for the life of the product, to the original purchaser, unless otherwise noted. Any products found to be defective in
material or workmanship will be repaired, replaced with same or similar device, or refunded at MCC’s discretion. For specific
information, please refer to the terms and conditions of sale.
Harsh Environment Program: Any Measurement Computing product that is damaged due to misuse, or any reason, may be
eligible for replacement with the same or similar device for 50% of the current list price. I/O boards face some harsh
environments, some harsher than the boards are designed to withstand. Contact MCC to determine your product’s eligibility for
this program.
30 Day Money-Back Guarantee: Any Measurement Computing Corporation product may be returned within 30 days of
purchase for a full refund of the price paid for the product being returned. If you are not satisfied, or chose the wrong product by
mistake, you do not have to keep it.
These warranties are in lieu of all other warranties, expressed or implied, including any implied warranty of merchantability or
fitness for a particular application. The remedies provided herein are the buyer’s sole and exclusive remedies. Neither
Measurement Computing Corporation, nor its employees shall be liable for any direct or indirect, special, incidental or
consequential damage arising from the use of its products, even if Measurement Computing Corporation has been notified in
advance of the possibility of such damages.
Trademark and Copyright Information
TracerDAQ, Universal Library, Measurement Computing Corporation, and the Measurement Computing logo are either
trademarks or registered trademarks of Measurement Computing Corporation.
Windows, Microsoft, and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation
LabVIEW is a trademark of National Instruments.
CompactFlash is a registered trademark of SanDisk Corporation.
XBee and XBee-PRO are trademarks of MaxStream, Inc.
All other trademarks are the property of their respective owners.
Information furnished by Measurement Computing Corporation is believed to be accurate and reliable. However, no
responsibility is assumed by Measurement Computing Corporation neither for its use; nor for any infringements of patents or
other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or
copyrights of 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.
Notice
Measurement 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 which, 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 in injury.
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 of people.
3
Table of Contents
Preface
About this User's Guide ....................................................................................................................... 5
What you will learn from this user's guide ......................................................................................................... 5
Conventions in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1
Introducing the USB-DIO24H/37 .......................................................................................................... 6
Overview: USB-DIO24H/37 features ................................................................................................................. 6
USB-DIO24H/37 block diagram ........................................................................................................................ 6
Software features ................................................................................................................................................ 7
Connecting a USB-DIO24H/37 to your computer is easy .................................................................................. 7
Chapter 2
Installing the USB-DIO24H/37 .............................................................................................................. 8
What comes with your USB-DIO24H/37 shipment? .......................................................................................... 8
Hardware .......................................................................................................................................................................... 8
Additional documentation ................................................................................................................................................. 8
Optional components ........................................................................................................................................................ 8
Unpacking the USB-DIO24H/37 ........................................................................................................................ 9
Installing the software ........................................................................................................................................ 9
Installing the USB-DIO24H/37 .......................................................................................................................... 9
Connecting the USB-DIO24H/37 to your system ............................................................................................................. 9
Connecting the board for I/O operations .......................................................................................................... 10
Connectors and cables......................................................................................................................................................10
Connector pinout..............................................................................................................................................................10
Cables ..............................................................................................................................................................................11
Field wiring, signal termination and conditioning ...........................................................................................................11
Chapter 3
Functional Details ............................................................................................................................... 12
Components ...................................................................................................................................................... 12
37-pin I/O connector ........................................................................................................................................................12
USB connector .................................................................................................................................................................13
LED .................................................................................................................................................................................13
Pull-up resistors ...............................................................................................................................................................13
Power consumption .......................................................................................................................................... 13
Output (source) current limits ..........................................................................................................................................14
Output (sink) current limits ..............................................................................................................................................14
Mechanical Drawings ....................................................................................................................................... 14
Chapter 4
Specifications ...................................................................................................................................... 15
Digital input/output........................................................................................................................................... 15
Counter ............................................................................................................................................................. 16
Data transfer rates ............................................................................................................................................. 16
Power ................................................................................................................................................................ 16
General ............................................................................................................................................................. 17
Environmental .................................................................................................................................................. 17
Mechanical ....................................................................................................................................................... 17
Main connector and pinout ............................................................................................................................... 17
Declaration of Conformity .................................................................................................................. 19
4
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 USB-DIO24H/37 digital I/O board. 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
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.
bold text Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes.
Preface
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
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.
5
Chapter 1
Introducing the USB-DIO24H/37
Overview: USB-DIO24H/37 features
This manual explains how to install, configure and use the USB-DIO24H/37 digital I/O board. You can use this
board in a variety of digital applications to control logic devices such as switches, gauges, relays, pumps, and
sensors.
The USB-DIO24H/37 is a USB 2.0 low-speed device supported under popular Microsoft® Windows® operating
systems. It is designed for USB 1.1 ports, and was tested for full compatibility with both USB 1.1 and USB 2.0
ports.
The USB-DIO24H/37 is a high drive, 24-line digital I/O device that includes one 32-bit external event counter.
Power is supplied by the +5 volt USB supply from your computer. No external power is required.
Digital I/O lines are accessed through a 37-pin connector. Each digital port can be configured for either input or
output. Digital channels are pulled up to +5V with 47k resistors.
The control register that sets the direction of the I/O ports is an emulation of the 82C55 in mode 0 (only). The
74FCT244 outputs are high-drive TTL, capable of sourcing 15 mA and sinking 64 mA.
The USB-DIO24H/37 board is completely plug-and-play, with no jumpers or switches to set. All board
addresses are set by your system's plug-and-play software.
USB-DIO24H/37 block diagram
USB-DIO24H/37 functions are illustrated in the block diagram shown here.
Figure 1. USB-DIO24H/37 functional block diagram
6
USB-DIO24H/37 User's Guide Introducing the USB-DIO24H/37
Software features
For information on the features of InstaCal and the other software included with your USB-DIO24H/37, refer to
the Quick Start Guide that shipped with your device.
Connecting a USB-DIO24H/37 to your computer is easy
Installing a data acquisition device has never been easier.
The USB-DIO24H/37 relies upon the Microsoft Human Interface Device (HID) class drivers. The HID
class drivers ship with every copy of Windows that is designed to work with USB ports. We use the
Microsoft HID because it is a standard, and its performance delivers full control and maximizes data
transfer rates for your USB-DIO24H/37. No third-party device driver is required.
The USB-DIO24H/37 is plug-and-play. There are no jumpers to position, DIP switches to set, or interrupts
to configure.
You can connect the USB-DIO24H/37 before or after you install the software, and without powering down
your computer first. When you connect an HID to your system, your computer automatically detects it and
configures the necessary software. You can connect and power multiple HID peripherals to your system
using a USB hub.
You can connect your system to various devices using a standard four-wire cable. The USB connector
replaces the serial and parallel port connectors with one standardized plug and port combination.
Data can flow two ways between a computer and peripheral over USB connections.
Make sure that you have the latest Windows Updates installed for your USB driver, particularly "XP Hotfix
KB822603."
7
C37FFS-x
C37FF-x
Installing the USB-DIO24H/37
What comes with your USB-DIO24H/37 shipment?
The following items are shipped with the USB-DIO24H/37.
Hardware
USB-DIO24H/37
Chapter 2
USB cable (2 meter length)
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 USB-DIO24H/37 and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.
Optional components
If you ordered any of the following products with your board, they should be included with your shipment.
Cables
8
USB-DIO24H/37 User's Guide Installing the USB-DIO24H/37
Signal termination and conditioning accessories
MCC provides signal termination and conditioning boards for use with the USB-DIO24H/37. Refer to the
"Field wiring, signal termination and conditioning" section on page 11 for a list of accessory products.
Unpacking the USB-DIO24H/37
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the USB-DIO24H/37 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.
Installing the USB-DIO24H/37
Be sure you are using the latest system software
Before you connect the USB-DIO24H/37, make sure that you are using the latest versions of the USB drivers.
Before installing the USB-DIO24H/37, download and install the latest Microsoft Windows updates. In
particular, when using Windows XP, make sure you have XP Hotfix KB822603 installed. This update is
intended to address a serious error in Usbport.sys when you operate a USB device. You can run Windows
Update or download the update from www.microsoft.com/downloads/details.aspx?familyid=733dd867-56a0-
4956-b7fe-e85b688b7f86&displaylang=en. For more information, refer to the Microsoft Knowledge Base
article "Availability of the Windows XP SP1 USB 1.1 and 2.0 update." This article is available at
support.microsoft.com/?kbid=822603.
Connecting the USB-DIO24H/37 to your system
To connect the USB-DIO24H/37 to your system, connect the USB cable to an available USB port on the
computer or to an external USB hub connected to the computer.
When you connect the USB-DIO24/37 for the first time, multiple Found New Hardware popup balloons open
when the operating system detects the device.
When installation is complete, the USB LED should flash and then remain lit. This indicates that
communication is established between the USB-DIO24H/37 and your computer.
If the USB LED turns off
If the USB LED is lit but then turns off, the computer has lost communication with the USB-DIO24H/37. To
restore communication, disconnect the USB cable from the computer, and then reconnect it. This should restore
communication, and the USB LED should turn back on.
Caution! Do not disconnect any device from the USB bus while the computer is communicating with the
USB-DIO24H/37, or you may lose data and/or your ability to communicate with the
USB-DIO24H/37.
9
USB-DIO24H/37 User's Guide Installing the USB-DIO24H/37
I/O connector type
37-pin D-type connector
Compatible cable
C37FFS-x cable shielded round cable. x = length in feet. (Figure 3)
C37FF-x unshielded ribbon cable. x = length in feet. (Figure 4)
Compatible accessory products (with the
C37FFS-x and C37FF-x cables)
SCB-37
CIO-MINI37
CIO-MINI37-VERT
CIO-ERB08
CIO-SERB08
CIO-ERB24
CIO-SPADE-50
SSR-RACK08
SSR-RACK24
Connecting the board for I/O operations
Connectors and cables
The table below lists the board connectors, compatible cables, and compatible accessory products for the USBDIO24H/37.
Board connectors, cables, and accessory equipment
Connector pinout
Figure 2. Main I/O connector pinout
10
USB-DIO24H/37 User's Guide Installing the USB-DIO24H/37
37
19
20
1
20
1
37
19
37
20
1
20
1
37
19
20
1
37
19
20
1
37
19
The red stripe
identifies pin # 1
Cables
Figure 3. C37FFS-x cable
Figure 4. C37FF-x cable
Field wiring, signal termination and conditioning
You can connect the USB-DIO24H/37 to the following accessory boards using the C37FF-x or C37FFS-x
cable.
SCB-37 – 37-conductor, shielded signal connection/screw terminal box.
CIO-MINI37 – 37-pin screw terminal board.
CIO-MINI37-VERT – 37-pin screw terminal board with vertical 37-pin male D connector.
CIO-ERB08 – Eight Form C, 6A relays.
CIO-SERB08 – 8 Form C relays, 10 Amp, relay accessory board with socketed and field-replaceable
relays.
CIO-ERB24 – 24 Form C, 6A relays.
CIO-SPADE50 — 16" X 4" termination panel which mates with both 37-pin and 50-pin connectors.
SSR-RACK08 – 24-channel solid state I/O module rack.
SSR-RACK24 – 24-channel solid state I/O module rack.
Details on these products are available on our web site at www.mccdaq.com/products/signal_conditioning.aspx.
11
Functional Details
Components
The USB-DIO24H/37 has the following external components, as shown in Figure 5.
37-pin I/O connector
USB connector
LED
Chapter 3
Figure 5. USB-DIO24H/37 components
37-pin I/O connector
The 37-pin connector provides 24 digital I/O, one counter, six ground, and two power connections.
The digital I/O port is configured as two 8-bit and two 4-bit ports based on an 82C55 mode 0 emulation. You
can configure each port independently for input (default) or output.
The CTR signal is the input to the 32-bit external event counter. The internal counter increments when the TTL
levels transition from low to high. The counter can count frequencies of up to 1 MHz.
The six ground (GND) pins are identical, and provide a common ground for all USB-DIO24H/37 functions.
The two power pins (+5V) draw power from the USB connector. Each pin is a +5 volt output that is supplied by
the computer.
12
USB-DIO24H/37 User's Guide Functional Details
LED status
Description
Steady green
The USB-DIO24H/37 is connected to a computer or external USB hub.
Blinks continuously
Data is being transferred.
Blinks three times
Initial communication is established between the USB-DIO24H/37 and the computer.
Caution! The +5 V pins are outputs. Do not connect to an external power supply or you may damage the
USB-DIO24H/37 and possibly the computer
When configured for input, you can use the USB-DIO24H/37 digital I/O terminals to detect the state of any
TTL level input. Refer to the schematic shown in Figure 6. If you set the switch to the +5 V input, Port A0 reads
TRUE (1). If you move the switch to GND, Port A0 reads FALSE.
Figure 6. Schematic showing switch detection by digital channel Port A0
For more information on digital signal connections
For more information on digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).
USB connector
The USB connector provides +5 V power and communication. The voltage supplied through the USB connector
is system-dependent, and may be less than 5 V. No external power supply is required.
LED
The LED indicates the communication status of the USB-DIO24H/37. It uses up to 5 mA of current and cannot
be disabled. The table below explains the function of the USB-DIO24H/37 LED.
LED Illumination
Pull-up resistors
Each digital port has an internal 47k pull-up resistor network. All digital pins are pulled up to +5 V (high logic
level) on power up and reset.
Power consumption
The maximum total output current that can be drawn from all USB-DIO24H/37 connections (power and digital
outputs) is 500 mA. This maximum applies to most personal computers and self-powered USB hubs.
Bus-powered hubs and notebook computers may limit the maximum available output current to 100 mA. To
overcome this limitation, an external self-powered hub can be used to supply the proper current level required
for full output capability.
Once you start running applications with the USB-DIO24H/37, each DIO bit can draw up to 15 mA. The
maximum amount of +5 V current available for external use, over and above that required by the USBDIO24H/37, is the difference between the total current requirement of the USB-DIO24H/37 (based on the
application), and the allowed current draw of the computer platform 500 mA for desktop PCs and self-powered
hubs.
13
USB-DIO24H/37 User's Guide Functional Details
The following power limits depend on whether you are sourcing current out of the USB-DIO24H/37, or you are
sinking current into the USB-DIO24H/37.
Output (source) current limits
The maximum allowed current draw for a typical desktop computer and self-powered hub is 500 mA. You must
account for the supply current drawn from the USB supply for the USB-DIO24H/37 itself, plus the current used
by each DIO line. Since each DIO line can output 15 mA maximum, 24 DIO × 15 mA = 360 mA (maximum
rating for the chips).
Output (sink) current limits
Each USB-DIO24H/37 DIO output can sink up to 64 mA. For an individual line, this is not a problem. But if
you were to apply this maximum load to all 24 DIO lines, you would damage the USB-DIO24H/37 because the
total amount of current is well over the maximum for the USB supply.
If you want to sink the maximum of 64 mA per DIO line, you can only do so with up to six lines. To sink
current with all 24 DIO outputs at any one time, you can sink a maximum of 18 mA per line.
Mechanical Drawings
Figure 7. Circuit board dimensions
14
Digital input type
74ACT373
Digital output type
74FCT244
Number of I/O
24 (Port A Bit 0 through Port C Bit 7)
Configuration
2 banks of 8 and 2 banks of 4, or
3 banks of 8
Pull up/pull-down configuration
Internal 47K resistors configured for pull-up to +5 V
Input high voltage
2.0 V min, 5.5 V absolute max
Input low voltage
0.8 V max, –0.5 V absolute min
Output high voltage (IOH = -15 mA)
2.4 V min
Output low voltage (IOL=64 mA)
0.55 V max
Source current – (Note 1)
Self -powered hub
Externally-powered root port hub
Maximum = 15 mA per output
Source current – (Note 2)
Bus-powered hub
Battery-powered root port hub.
Not supported
Sink current – (Note 3)
Current sink max: 365 mA / [number of outputs].
64 mA max sink current for any single output.
Power up/reset state
Input mode (high impedance)
Specifications
Typical for 25°C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Digital input/output
Table 1. Digital I/O specifications
Chapter 4
Note 1: "Self-powered hub" refers to a USB hub with an external power supply. Self-powered hubs allow a
connected USB device to draw up to 500 mA. "Root port hubs" reside in the PC’s USB Host
Controller. The USB port(s) on your PC are root port hubs. All externally powered root port hubs (i.e.
desktop PC’s) provide up to 500 mA of current for a USB device. In this configuration, all 24 digital
outputs of the USB-DIO24H/37 can source their per-pin maximum of 15 mA. This provides a total
requirement of 15 mA*24 = 360 mA. Combining this with the USB-DIO24H/37 operating current of
135 mA a fully-loaded current draw of 495 mA is realized.
Note 2: "Bus-powered hub" refers to a USB hub that derives power directly from the USB +5 V and does not
have its own power supply. These hubs allow a connected USB device to draw up to 100 mA. Batterypowered root port hubs provide 100 mA or 500 mA, depending upon the manufacturer. A laptop PC
that is not connected to an external power adapter is an example of a battery-powered root port hub. If
your laptop is constrained to the 100 mA maximum a USB-DIO24H/37 is not guaranteed to work. In
order to use the product you will need to purchase a self-powered hub.
Note 3: A low-side resettable fuse protects the USB-DIO24H/37. This is designed to protect the host PC or hub
from an over current condition. Assuming all return currents in sinking applications return via the USB
cable ground signal, the maximum allowable return current is 500 mA. Please include the USBDIO24H/37 unloaded operating current (135 mA) in your power budget.
15
USB-DIO24H/37 User's Guide Specifications
Pin name (Note 4)
CTR
Counter type
Event counter
Number of channels
1
Input source
CTR screw terminal
Input type
TTL, rising edge triggered
Resolution
32 bits
Schmidt trigger hysteresis
20 mV to 100 mV
Input leakage current
±1 µA
Maximum input frequency
1 MHz
High pulse width
500 ns min
Low pulse width
500 ns min
Input low voltage
0 V min, 1.0 V max
Input high voltage
4.0 V min, 15.0 V max
Digital I/O transfer rates (software paced)
Digital input
62 port reads or single bit reads per second (typical)
Digital output
125port writes or single bit writes per second (typical)
Counter/timer read/write rates (software paced)
Counter read
62 port reads per second (typical)
Counter clear
125 port writes per second (typical)
Parameter
Conditions
Specification
Supply current (Note 5)
No Load
100mA typ, 135 mA max
Input power requirements (Note 6)
4.75 V min, 5.25 V max
USB +5 V power available
Measured at "USB +5 V" screw
terminals (pins 10, 14, and 30)
4.4 V min, 5.25 V max
USB +5 V power
output current (Note 7)
Connected to:
Self-powered hub
Externally-powered root port hub
[350 mA] – [total output source
current]
USB +5 V over-current protection
Resettable fuse
Hold current: 350 mA, typical
Trip current: 700 mA typical
Trip/recovery time: 100 mS, max
On resistance: 1.3 Ohms max
Counter
Table 2. Counter specifications
Note 4: CTR is a Schmitt trigger input.
Data transfer rates
Power
Table 3. Data transfer rate specifications
Table 4. Power specifications
Note 5: This is the total (no load) current requirement for the USB-DIO24H/37.
Note 6: Bus-powered hubs are allowed to provide downstream USB power as low as 4.4 V. Although your
USB-DIO24H/37 will typically function at this 4.4 V minimum, guaranteed performance requires a
minimum power supply voltage of 4.75 V. All self-powered and root port hubs will meet this 4.75 V
minimum.
16
USB-DIO24H/37 User's Guide Specifications
Parameter
Conditions
Specification
USB controller clock error
25 °C
±30 ppm max
0 to 70 °C
±50 ppm max
Device type
USB 1.1 low-speed
Device compatibility
USB 1.1, USB 2.0
Operating temperature range
0 to 70 °C
Storage temperature range
-40 to 85 °C
Humidity
0 to 90% non-condensing
Dimensions
119 mm (L) x 84 mm (W) x 14 mm (H)
USB cable length
3 meters max
USB cable type
A-B cable, UL type AWM 2527 or equivalent. (min 24 AWG
VBUS/GND, min 28 AWG D+/D-)
User connection length
3 meters max
Connector type
37-pin D-type
Compatible cables
C37FF-x unshielded ribbon cable. x = length in feet.
C37FFS-x cable shielded round cable. x = length in feet.
Compatible accessory products (with the
C37FFS-x and C37FF-x cable)
SCB-37
CIO-MINI37
CIO-MINI37-VERT
CIO-ERB08
CIO-SERB08
CIO-ERB24
CIO-SPADE50
SSR-RACK08
SSR-RACK24
Note 7: Refer to the available source/sink current level listed in the "Digital input/output" section.
General
Table 5. General specifications
Environmental
Table 6. Environmental specifications
Mechanical
Table 7. Mechanical specifications
Main connector and pinout
Table 8. Connector specifications
17
USB-DIO24H/37 User's Guide Specifications
Pin
Signal name
Pin
Signal name
1
CTR
20
+5
2
NC
21
GND
3
Port B Bit 7
22
Port C Bit 7
4
Port B Bit 6
23
Port C Bit 6
5
Port B Bit 5
24
Port C Bit 5
6
Port B Bit 4
25
Port C Bit 4
7
Port B Bit 3
26
Port C Bit 3
8
Port B Bit 2
27
Port C Bit 2
9
Port B Bit 1
28
Port C Bit 1
10
Port B Bit 0
29
Port C Bit 0
11
GND
30
Port A Bit 7
12
NC
31
Port A Bit 6
13
GND
32
Port A Bit 5
14
NC
33
Port A Bit 4
15
GND
34
Port A Bit 3
16
NC
35
Port A Bit 2
17
GND
36
Port A Bit 1
18
+5
37
Port A Bit 0
19
GND
Table 9. Connector pinout
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
USB-DIO24H/37
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, EN 61326 (1997) Amendment 1 (1998)
Emissions: Group 1, Class A
EN 55011 (1990)/CISPR 11: Radiated and Conducted emissions.
Immunity: EN61326, Annex A
IEC 61000-4-2 (1995): Electrostatic Discharge immunity, Criteria C.
IEC 61000-4-3 (1995): Radiated Electromagnetic Field immunity Criteria A.
IEC 61000-4-8 (1994): Power Frequency Magnetic Field immunity Criteria A.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
February, 2006. Test records are outlined in Chomerics Test Report #EMI4445.06.
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
Loading...