Measurement Computing USB-DIO24/37 User manual

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USB-DIO24/37
Digital Input/Output
User’s Guide
Document Revision 1, July, 2005
© Copyright 2005, Measurement Computing Corporation

Your new Measurement Computing product comes with a fantastic extra —
Management committed to your satisfaction!
Refer to www.mccdaq.com/execteam.html for the names, titles, and contact information of each key executive at
Measurement Computing.
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
two missions:
To offer the highest-quality, computer-based data acquisition, control, and GPIB hardware and software
available—at the best possible price.
To offer our customers superior post-sale support—FREE. Whether providing unrivaled telephone technical and
sales support on our latest product offerings, or continuing that same first-rate support on older products and
operating systems, we’re committed to you!
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.
Lifetime Harsh Environment Warranty®: We will replace any product manufactured by Measurement Computing
Corporation that is damaged (even due to misuse) for only 50% of the current list price. I/O boards face some tough
operating conditionssome more severe than the boards are designed to withstand. When a board becomes damaged, just
return the unit with an order for its replacement at only 50% of the current list price. We don’t need to profit from your
misfortune. By the way, we honor this warranty for any manufacturer’s board that we have a replacement for.
30 Day Money Back Guarantee: You may return any Measurement Computing Corporation product 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. Please call for an RMA number first. No credits or returns accepted without
a copy of the original invoice. Some software products are subject to a repackaging fee.
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.
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HM USB-DIO24-37.doc

Trademark and Copyright Information
TracerDAQ, InstaCal, Universal Library, Harsh Environment Warranty, Measurement Computing Corporation, and the
Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation.
SoftWIRE is a registered trademark of SoftWIRE Technology, Inc.
Windows, Microsoft, and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation. LabVIEW
is a trademark of National Instruments. 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 the written approval of the CEO of 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.
iii

Table of Contents
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 USB-DIO24/37......................................................................................................... 1-1
Overview: USB-DIO24/37 features................................................................................................................ 1-1
USB-DIO24/37 block diagram....................................................................................................................... 1-1
Software features ............................................................................................................................................ 1-2
Connecting a USB-DIO24/37 to your computer is easy................................................................................. 1-2
Chapter 2
Installing the USB-DIO24/37............................................................................................................. 2-1
What comes with your USB-DIO24/37 shipment?......................................................................................... 2-1
Hardware ....................................................................................................................................................................... 2-1
Software......................................................................................................................................................................... 2-1
Documentation............................................................................................................................................................... 2-1
Optional components ..................................................................................................................................................... 2-2
Unpacking the USB-DIO24/37....................................................................................................................... 2-2
Installing the software .................................................................................................................................... 2-2
Installing the USB-DIO24/37 ......................................................................................................................... 2-3
Connecting the USB-DIO24/37 to your system............................................................................................................. 2-3
Connecting the board for I/O operations ........................................................................................................ 2-3
Connectors, cables – main I/O connector....................................................................................................................... 2-3
Pin out – main I/O connector ......................................................................................................................................... 2-4
Cables ............................................................................................................................................................................ 2-4
Field wiring, signal termination and conditioning ......................................................................................................... 2-5
Chapter 3
Functional Details ............................................................................................................................. 3-1
Components.................................................................................................................................................... 3-1
37-pin I/O connector...................................................................................................................................................... 3-1
USB connector............................................................................................................................................................... 3-2
LED ............................................................................................................................................................................... 3-2
Pull-up resistors ............................................................................................................................................................. 3-2
Power consumption ........................................................................................................................................ 3-2
Chapter 4
Specifications.................................................................................................................................... 4-1
Digital input/output......................................................................................................................................... 4-1
Counter ........................................................................................................................................................... 4-1
Data transfer rates........................................................................................................................................... 4-1
Power.............................................................................................................................................................. 4-2
General ........................................................................................................................................................... 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 USB-DIO24/37 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.
< # : # > 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 that is relevant to the operation of the USB-
DIO24/37.
MCC's Specifications: USB-DIO24/37 (the PDF version of Chapter 5 in this guide) is available on
our web site at www.mccdaq.com/pdfs/PCI-DIO24-37.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™User’s Guide is available on our web site at
www.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf.
This user's manual is also available on our web site at www.mccdaq.com/PDFmanuals/USB-DIO24-
37.pdf.
v

Chapter 1
Introducing the USB-DIO24/37
Overview: USB-DIO24/37 features
This manual explains how to install, configure and use the USB-DIO24/37 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-DIO24/37 is a USB 2.0 low-speed module supported under Microsoft® Windows® 98 (2nd
edition), Windows ME, Windows 2000, and Window XP. 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-DIO24/37 features 24 bits of digital I/O and one 32-bit external event counter. The device is
powered by the +5 volt USB supply. No external power is required. All I/O connections are made to a 37-
pin connector. Digital channels are pulled up to +5V with 47k resistors.
An on-board industry standard 82C55 programmable peripheral interface chip provides the 24 discrete
digital I/O lines in four ports. You can configure each digital port independently for either input or output.
The USB-DIO24/37 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-DIO24/37 block diagram
USB-DIO24/37 functions are illustrated in the block diagram shown here.
PORT A
Control
PORT A (7:0)
PORT B (7:0)
PORT CH (3:0)
PORT B
PORT CH
PORT CL
PORT CL (3:0)
USB
Microcontroller
500 mA
USB 2.0
compliant
interface
8
37-Pin I/O Connector
32-bit
Event Counter
1 channel
1
82C55 DIO
Figure 1-1. USB-DIO24/37 functional block diagram
1-1

USB-DIO24/37 User's Guide Introducing the USB-DIO24/37
Software features
The following software ships with the USB-DIO24/37 free of charge.
InstaCal installation, calibration, and test utility
TracerDAQ™ suite of virtual instruments
SoftWIRE® for Visual Studio® .NET graphical programming
MCC DAQ Components for VS .NET (installed with SoftWIRE® for VS .NET)
For information on the features of InstaCal, TracerDAQ, and SoftWIRE, refer to the Quick Start Guide
booklet that ships with the USB-DIO24/37.
Connecting a USB-DIO24/37 to your computer is easy
Installing a data acquisition device has never been easier.
The USB-DIO24/37 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-DIO24/37. No third-party device driver is required.
The USB-DIO24/37 is plug-and-play. There are no jumpers to position, DIP switches to set, or
interrupts to configure.
You can connect the USB-DIO24/37 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."
1-2

Chapter 2
Installing the USB-DIO24/37
What comes with your USB-DIO24/37 shipment?
As you unpack your board, make sure each of the items shown below is included.
Hardware
USB-DIO24/37
USB-DIO24/37
REV.1
USB cable (2 meter length)
Software
The Measurement Computing Data Acquisition Software CD contains the following software:
InstaCal installation, calibration, and test utility
TracerDAQ suite of virtual instruments
SoftWIRE for VS .NET
SoftWIRE MCC DAQ Components for .NET
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). Please read this booklet completely
before installing any software and hardware.
2-1

USB-DIO24/37 User's Guide Installing the USB-DIO24/37
Optional components
If you ordered any of the following products with your board, they should be included with your
shipment.
Universal Library
Universal Library™ Data Acquisition and Control Programming Tools (also includes the InstaCal
utility, the Universal Library User's Guide, and the Universal Library Function Reference)
Cables
C37FFS-x
C37FF-x
Signal termination and conditioning accessories
MCC provides signal termination and conditioning boards that you can use with the USB-DIO24/37.
Refer to the "Field wiring, signal termination and conditioning" section on page 2-5 for a complete list of
compatible accessory products.
Unpacking the USB-DIO24/37
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the USB-DIO24/37 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 your USB-DIO24/37 arrives already damaged, notify Measurement Computing Corporation
immediately by phone, fax, or email. For international customers, contact your local distributor where
you purchased the USB-DIO24/37.
Phone: [phone] and follow the instructions for reaching Tech Support.
Fax: [phone] to the attention of Tech Support
Email: [e-mail]
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.
2-2