Measurement USB-TEMP-AI User Manual
USB-PDISO8/40
USB-based
Isolated Input and Relay Output
User's Guide
Document Revision 3, August, 2006
© Copyright 2006, Measurement Computing Corporation™
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HM USB-PDISO8_40.doc
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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-PDISO8/40...................................................................................................... 1-1
Software features............................................................................................................................................ 1-1
USB-PDISO8/40 block diagram..................................................................................................................... 1-2
Connecting a USB-PDISO8/40 to your computer is easy .............................................................................. 1-2
Chapter 2
Installing the USB-PDISO8/40.......................................................................................................... 2-1
What comes with your USB-PDISO8/40 shipment? ...................................................................................... 2-1
Hardware ....................................................................................................................................................................... 2-1
Additional documentation.............................................................................................................................................. 2-2
Optional components ..................................................................................................................................................... 2-2
Unpacking the USB-PDISO8/40.................................................................................................................... 2-2
Installing the software .................................................................................................................................... 2-2
Installing the USB-PDISO8/40....................................................................................................................... 2-2
Connecting the external power supply........................................................................................................................... 2-2
Connecting the USB-PDISO8/40 to your system .......................................................................................................... 2-3
Connecting the board for I/O operations ........................................................................................................ 2-4
Connectors, cables – main I/O connector....................................................................................................................... 2-4
Pin out – main I/O connector ......................................................................................................................................... 2-4
Cabling........................................................................................................................................................................... 2-4
Field wiring and signal termination accessories............................................................................................................. 2-5
Chapter 3
Functional Details............................................................................................................................. 3-1
Internal components ....................................................................................................................................... 3-1
USB OUT connector...................................................................................................................................................... 3-1
USB IN connector.......................................................................................................................................................... 3-1
External power connectors............................................................................................................................................. 3-2
USB LED....................................................................................................................................................................... 3-2
PWR LED...................................................................................................................................................................... 3-2
Direct current (dc) power connector and +9 V power supply......................................................................... 3-2
Daisy chaining additional modules to the USB-PDISO8/40 ..........................................................................3-3
Power limitations using multiple USB-PDISO8/40 devices........................................................................... 3-3
Supply current................................................................................................................................................................ 3-3
Voltage drop ..................................................................................................................................................................3-4
Relay contact protection circuit for inductive loads....................................................................................................... 3-4
Chapter 4
Specifications.................................................................................................................................... 4-1
Relay specifications........................................................................................................................................ 4-1
Isolated inputs................................................................................................................................................. 4-1
Power.............................................................................................................................................................. 4-2
USB specifications ......................................................................................................................................... 4-2
Mechanical ..................................................................................................................................................... 4-2
Environmental ................................................................................................................................................ 4-3
Main connector and pinout ............................................................................................................................. 4-3
P14................................................................................................................................................................................. 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-PDISO8/40 so that you get the most out of
its USB-based isolated input/relay output features.
This user's guide also refers you to related documents available on our web site, and to technical support
resources that can also help you get the most out of your USB-PDISO8/40.
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 can help you get the most out of your USBPDISO8/40.
MCC's Specifications: USB-PDISO8/40 (the PDF version of the Specifications chapter in this guide) is
available on our web site at www.mccdaq.com/pdfs/USB-PDISO8-40.pdf
MCC's Quick Start Guide is available on our web site at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf
MCC's Guide to Signal Connections is available on our web site at
www.mccdaq.com/signals/signals.pdf
MCC's Universal Library User's Guide is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf
MCC's Universal Library Function Reference is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-functions.pdf
MCC's Universal Library for LabVIEW
www.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf
.
.
™
User’s Guide is available on our web site at
.
.
.
.
USB-PDISO8/40 User's Guide (this document) is also available on our web site at
www.mccdaq.com/PDFmanuals/USB-PDISO8-40.pdf
.
v
Introducing the USB-PDISO8/40
This user's guide contains all of the information you need to install, configure, and program the USBPDISO8/40.
Chapter 1
The USB-PDISO8/40 is a USB 1.1 low-speed device that is used for data acquisition and control. The USBPDISO8/40 is supported under popular Microsoft
both USB 1.1 and USB 2.0 ports.
The USB-PDISO8/40 offers eight single pole double throw (SPDT) Form C relay outputs and eight isolated
high voltage digital inputs. The inputs monitor 24V AC or DC inputs. The relay outputs provide 6 Amp outputs
at 240 VAC or 28 VDC.
You can configure each isolated input with an optional input filter. The input filters are enabled and disabled by
software.
The USB-PDISO8/40 is shown in Figure 1-1. All I/O connections are made to a 40-pin connector.
The USB-PDISO8/40 is powered by an external 9 V, 1 A regulated power supply that is shipped with the
device. The USB-PDISO8/40 is shipped in a rugged enclosure that you can mount on a DIN rail or on a bench.
®
Windows® operating systems, and is fully compatible with
Software features
For information on the features of InstaCal and the other software included with your USB-PDISO8/40, 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
under less commonly used operating systems.
for the latest software version or versions of the software supported
1-1
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