Measurement USB-7202 User Manual
USB-5201
USB-based 8-Channel Thermocouple Input
Device and Data Logger
User's Guide
Document Revision 7, June, 2008
© Copyright 2008, Measurement Computing Corporation
HM USB-5201.doc
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Table of Contents
Preface
About this User’s Guide ....................................................................................................................... 7
What you will learn from this user’s guide ......................................................................................................... 7
Conventions in this user’s guide ......................................................................................................................... 7
Where to find more information ......................................................................................................................... 7
Chapter 1
Introducing the USB-5201 .................................................................................................................... 8
Overview: USB-5201 features ............................................................................................................................ 8
Logging data with the USB-5201 ..................................................................................................................................... 8
USB-5201 block diagram ................................................................................................................................... 9
Software features ................................................................................................................................................ 9
Connecting a USB-5201 to your computer is easy ........................................................................................... 10
Chapter 2
Installing the USB-5201 ...................................................................................................................... 11
What comes with your USB-5201 shipment? ................................................................................................... 11
Hardware .........................................................................................................................................................................11
Additional documentation ................................................................................................................................................12
Unpacking the USB-5201 ................................................................................................................................. 12
Installing the software ...................................................................................................................................... 12
Installing the hardware ..................................................................................................................................... 12
Firmware revision 2.12 and earlier ..................................................................................................................................12
Firmware revision 3.0 and later .......................................................................................................................................12
Configuring the USB-5201 ............................................................................................................................... 13
Configuring data logging options.....................................................................................................................................13
Calibrating the USB-5201 ................................................................................................................................ 13
Chapter 3
Sensor Connections ........................................................................................................................... 14
Screw terminal pin out ...................................................................................................................................... 14
Thermocouple input terminals (C0H/C0L to C7H/C7L) .................................................................................................15
Ground terminals (GND) .................................................................................................................................................15
Power terminals (+5V) .....................................................................................................................................................15
Digital terminals (DIO0 to DIO7) ....................................................................................................................................15
CJC sensors ......................................................................................................................................................................16
Thermocouple connections ............................................................................................................................... 16
Wiring configuration ........................................................................................................................................................16
Digital I/O connections ..................................................................................................................................... 17
Configuring the DIO channels to generate alarms ...........................................................................................................17
Chapter 4
Functional Details ............................................................................................................................... 18
Thermocouple measurements ........................................................................................................................... 18
Cold junction compensation (CJC) ..................................................................................................................................18
Data linearization .............................................................................................................................................................18
Open-thermocouple detection (OTD) ..............................................................................................................................18
External components ........................................................................................................................................ 19
Screw terminals................................................................................................................................................................19
USB connector .................................................................................................................................................................19
LED .................................................................................................................................................................................19
CompactFlash® memory card slot ....................................................................................................................................20
Data logging button .........................................................................................................................................................20
External power supply ...................................................................................................................................... 21
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USB-5201 User's Guide
Disconnecting the USB-5201 from the computer ............................................................................................. 21
Transferring binary data after a logging session ............................................................................................... 21
Converting binary data after a logging session ................................................................................................. 21
Chapter 5
Specifications ...................................................................................................................................... 22
Analog input section ......................................................................................................................................... 22
Channel configurations ..................................................................................................................................... 22
Accuracy ........................................................................................................................................................... 23
Thermocouple measurement accuracy .............................................................................................................................23
Throughput rate to PC ...................................................................................................................................... 23
Digital input/output........................................................................................................................................... 24
Temperature alarms .......................................................................................................................................... 24
Memory ............................................................................................................................................................ 24
Microcontroller ................................................................................................................................................. 25
Data Logging .................................................................................................................................................... 25
Real time clock ................................................................................................................................................. 26
USB +5V voltage ............................................................................................................................................. 26
Power ................................................................................................................................................................ 26
USB specifications ........................................................................................................................................... 27
Environmental .................................................................................................................................................. 27
Mechanical ....................................................................................................................................................... 27
Screw terminal connector type and pin out....................................................................................................... 27
Screw terminal pin out .....................................................................................................................................................28
Declaration of Conformity .................................................................................................................. 29
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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-5201 so that you get the most out of its
USB-based temperature measurement 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 these boards.
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
MCC's Specifications: USB-5201 (the PDF version of the Specifications chapter in this guide) is available
on our web site at www.mccdaq.com/pdfs/USB-5201.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.
USB-5201 User's Guide (this document) is also available on our web site at
www.mccdaq.com/PDFmanuals/USB-5201.pdf.
7
Chapter 1
Introducing the USB-5201
Overview: USB-5201 features
This user's guide contains all of the information you need to connect the USB-5201 to your computer and to the
signals you want to measure.
The USB-5201 is a USB 2.0 full-speed, thermocouple input device that is supported under popular Microsoft®
Windows® operating systems. The USB-5201 is fully compatible with both USB 1.1 and USB 2.0 ports.
The USB-5201 provides eight differential thermocouple input channels and two integrated cold junction
compensation (CJC) sensors. You can take measurements from type J, K, R, S, T, N, E, and B thermocouples.
An open thermocouple detection feature lets you detect a broken thermocouple. An on-board microprocessor
automatically linearizes the measurement data.
Eight independent, TTL-compatible digital I/O channels are provided to monitor TTL-level inputs,
communicate with external devices, and to generate alarms. The digital I/O channels are software
programmable for input or output.
The USB-5201 features eight independent temperature alarms. Each alarm controls an associated digital I/O
channel as an alarm output. The input to each alarm is one of the temperature input channels. The output of each
alarm is software configurable as active high or low. You set up the temperature threshold conditions to activate
each alarm. When an alarm is activated, the associated DIO channel is driven to the output state.
You can log your measurements to a CompactFlash® memory card. CompactFlash is a removable non-volatile
storage device. A 256 MB CompactFlash memory card is shipped with the device to store your data. For more
information, refer to the section "Logging data with the USB-5201" below.
External power is required for data logging operations
Due to processing limitations, you cannot log data to the memory card when the USB-5201 is connected to your
computer's active USB bus. When operating as a data logger, disconnect the USB cable from the computer, and
connect the external power supply shipped with the device.
The USB-5201 is a standalone plug-and-play device. External power is required for data logging mode only. All
configurable options are software-programmable. The USB-5201 is fully software-calibrated.
Logging data with the USB-5201
The USB-5201 has many software-configurable options for setting up data logging.
You can record:
temperature ( C) or raw data from selected input channels
timestamp data
CJC sensor readings
You specify the number of seconds between samples. You can begin logging data at power up, when you press
the data logging button, or at a specific date and time.
8
USB-5201 User's Guide Introducing the USB-5201
24-bit A/D
(CH0, CH1)
Input
mux.
Input
mux.
CJC
CH0-3
Precision
5V Ref.
24-bit A/D
(CH2, CH3)
24-bit A/D
(CH4, CH5)
Input
mux.
Input
mux.
CJC
CH4-7
24-bit A/D
(CH6, CH7)
Screw Terminal
Screw Terminal
Isolated
Micro
Temp
sensor
I/O
Isolator
500 V
Isolation
Barrier
SPI
Isolated
DC/DC
USB
+5V
(+12)
(-12)
8
DIO
Compact
Flash
connector
Battery-backed
Real-Time
Clock
USB
Microcontroller
USB
(PC)
Ext. Pwr.
(for data
logging)
USB
or
External power required
for data logging operations
USB-5201 block diagram
USB-5201 functions are illustrated in the block diagram shown here.
Software features
For information on the features of InstaCal and the other software included with your USB-5201, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version.
Figure 1. USB-5201 functional block diagram
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