Measurement Computing AI-EXP48 User manual

AI-EXP48
User's Guide
Document Revision 2A, March, 2009
© Copyright 2009, Measurement Computing Corporation

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HM AI-EXP48.doc
Trademark and Copyright Information
Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo are
either trademarks or registered trademarks of MeasurementComputing Corporation. Refer to the Copyrights &
Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.
Other product and company namesmentioned herein are trademarks or trade names of their respective
companies.
©2001 MeasurementComputingCorporation. All rights reserved. No part of this publicationmay 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 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 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.

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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 AI-EXP48.....................................................................................................................6
Overview: AI-EXP48 features............................................................................................................................6
Software features................................................................................................................................................6
Chapter 2
Installing the AI-EXP48.........................................................................................................................7
What comes with your AI-EXP48 shipment?.....................................................................................................7
Hardware .......................................................................................................................................................................... 7
Optional components........................................................................................................................................................ 7
Additional documentation................................................................................................................................................. 7
Unpacking the AI-EXP48...................................................................................................................................7
Connecting to the parent A/D device with the DSUB25 expansion connector...................................................8
Connecting the device for I/O operations.........................................................................................................9
User connectors................................................................................................................................................................9
Screw terminal pin out.....................................................................................................................................................10
Expansion connector........................................................................................................................................................11
Cabling.............................................................................................................................................................................12
Associating CJC channels with thermocouple channels...................................................................................12
Chapter 3
Specifications......................................................................................................................................13
Analog input.....................................................................................................................................................13
Accuracy..........................................................................................................................................................................13
Thermocouples ................................................................................................................................................................13
Power consumption ..........................................................................................................................................14
Environmental ..................................................................................................................................................14
Mechanical .......................................................................................................................................................14
User connectors ................................................................................................................................................14
Declaration of Conformity..................................................................................................................17

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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 AI-EXP48 so that you get the most out of its
analog input features.
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
Text presented in a box signifies additional information related to the subject matter.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
bold text
italic text
Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.
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 AI-EXP48 hardware is available on our website at www.mccdaq.com. You can
also contact Measurement Computing Corporation with specific questions.
Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: [e-mail]
Phone: [phone] 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.

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Chapter 1
Introducing the AI-EXP48
Overview: AI-EXP48 features
The AI-EXP48 is an expansion module used to add 48 single-ended or 24 differential analog inputs to
compatible hardware, such as the USB-1616HS Series devices.
The AI-EXP48 connects to the parent device via a 25-pin expansion connector. The AI-EXP48 supports all of
the analog input and temperature input capabilities of the parent device.
The AI-EXP48 can measure up to 48 channels of voltage or up to 24 channels of temperature. Each input
channel is software configurable for either voltage or thermocouple. The analog inputs are provided on six rows
of removable screw terminals.
The voltage measurement speed is the same as the parent device. When measuring thermocouples, the parent
device must be configured for differential inputs.
The AI-EXP48 receives power from the parent device. An external power supply may be required to supply
sufficient power to both devices.
Software features
For information on the features of InstaCal and the other software included with your AI-EXP48, 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.

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Chapter 2
Installing the AI-EXP48
What comes with your AI-EXP48 shipment?
The following items are shipped with the AI-EXP48.
Hardware
AI-EXP48
Clips (2) used to lock the AI-EXP48 and parent device together when connected directly
Optional components
You can connect the AI-EXP48 to a USB-1616HS series parent device using the optional CA-96A cable.
CA-96 cable
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 AI-EXP48 and information regarding installation of that software. Please
read this booklet completely before installing any software or hardware.
Unpacking the AI-EXP48
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the AI-EXP48 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: [phone] and follow the instructions for reaching Tech Support.
Fax: [phone] to the attention of Tech Support
Email: [e-mail]

AI-EXP48 User's Guide Installing the AI-EXP48
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Connecting to the parent A/D device with the DSUB25 expansion
connector
You can use the 25-pin expansion connector to connect to a compatible parent device, such as a USB-1616HS
Series device.
You can either mate the expansion connectors directly or use the optional expansion cable to connect the two
devices. Do the following:
1. Disconnect the USB cable from the parent device.
If the parent device is connected to an external power supply, remove the external power cable from the
device.
2. Connect the two devices together by one of the following methods:
oDirect connect method: The parent device must have a female DSUB25 expansion connector to use
this method. Push the expansion module's DSUB25 connector into the DSUB25 connector on the
parent device. Lock the two devices together by inserting the two clips provided (one per side).
The image below shows the AI-EXP48 directly connected a USB-1616HS-4.
Figure 1. Direct connect method
oCable method: Connect the appropriate cable (not included) from the DSUB25 connector on the AI-
EXP48 to the expansion connector on the parent device. The image below shows the AI-EXP48
connected to a USB-1616HS-4 via the CA-96A cable.
Figure 2. Cable method

AI-EXP48 User's Guide Installing the AI-EXP48
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3. Connect the external power supply, if used, to the power input port of the parent device, and then plug it
into an AC outlet.
Note: Connecting external power to the device before connecting the USB cable to the computer allows the
parent device to inform the host computer upon connection of the USB cable that the device requires
minimum power from the computer's USB port.
4. Connect the USB cable from the parent device to the host computer's USB port.
Connect to a USB 2.0 high speed hub to achieve the highest transfer rate (480 Mbps). When connected to a
USB 1.1 full-speed port, the transfer rate is limited to 12 Mbps.
Connecting the device for I/O operations
User connectors
The following table lists the device connectors and compatible hardware for the AI-EXP48.
User connectors and hardware
Connector type
Six banks of removable screw-terminal blocks
25-pin male DSUB connector (for connection to parent device)
Wire gauge range (screw terminals)
14 AWG to 30 AWG

AI-EXP48 User's Guide Installing the AI-EXP48
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Screw terminal pin out
Single-ended mode pin out
Terminal
block
Device
label
(Signal description)
Device
label
(Signal description)
Terminal
block
Analog In
TB1
A
(Analog common)
63L
(CH 63)
Analog In
TB6
16H
(CH 16)
55H
(CH 55)
24L
(CH 24)
A
(Analog common)
A
(Analog common)
62L
(CH 62)
17H
(CH 17)
54H
(CH 54)
25L
(CH 25)
A
Analog common
A
(Analog common)
61L
(CH 61)
18H
(CH 18)
53H
(CH 53)
26L
(CH 26)
A
(Analog common)
A
(Analog common)
60L
(CH 60)
19H
(CH 19)
52H
(CH 52)
27L
(CH 27)
A
(Analog common)
Analog In
TB2
A
(Analog common)
59L
(CH 59)
Analog in
TB5
20H
(CH 20)
51H
(CH 51)
28L
(CH 28)
A
(Analog common)
A
(Analog common)
58L
(CH 58)
21H
(CH 21)
50H
(CH 50)
29L
(CH 29)
A
(Analog common)
A
(Analog common)
57L
(CH 57)
22H
(CH 22)
49H
(CH 49)
30L
(CH 30)
A
(Analog common)
A
(Analog common)
56L
(CH 56)
23H
(CH 23)
48H
(CH 48)
31L
(CH 31)
A
(Analog common)
Analog In
TB3
A
(Analog common)
47L
(CH 47)
Analog In
TB4
32H
(CH 32)
39H
(CH 39)
40L
(CH 40)
A
(Analog common)
A
(Analog common)
46L
(CH 46)
33H
(CH 33)
38H
(CH 38)
41L
(CH 41)
A
(Analog common)
A
(Analog common)
45L
(CH 45)
34H
(CH 34)
37H
(CH 37)
42L
(CH 42)
A
(Analog common)
A
(Analog common)
44L
(CH 44)
35H
(CH 35)
36H
(CH 36)
43L
(CH 43)
A
(Analog common)