Omega Products USB-4750 Installation Manual

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User’s Guide

USB-4750

32 Channel Isolated Digital I/O

USB Data Acquisition Module

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USB-4750

32-Channel Isolated
Digital I/O USB Data Acquisition

Module

User Manual

Contents

Chapter 1 Introduction ..................................................... 2

1.1 Hardware Features.. . .. .. .. .. ........... .. . ........... ... . .. .. . .. .. . ........... 2

1.2 Software Overview............................................................ 3

1.2.1 More on the CD ....................... ................. ..................... 3

Chapter 2 Installation ....................................................... 6

2.1 Unpacking ......................................................................... 6

2.2 Driver Installation ............................................................. 7

2.3 Hardware Installation ........................................................ 9

2.4 Hardware Uninstallation ................................................... 9

Figure 2.1:Unplug or Eject Hardware Dialog .............. 10

Figure 2.2:Stop a Hardware device dialog box ............ 10

Chapter 3 Signal Connections ........................................ 12

3.1 Overview ......................................................................... 12

3.2 I/O Connectors ................................................................ 12

3.2.1 Pin Assignments .......................................................... 12

Figure 3.1:I/O Connector Pin Assignment .................. 12

3.2.2 I/O Connector Signal Description ................................ 13

Table 3.1:I/O Connector Signal Descriptions .............. 13

3.2.3 LED Indicator Status Descript ion ................................ 13

Table 3.2:LED Indicator Status Description ................ 13

3.3 Isolated Digital I/O Connections..................................... 14

3.3.1 Dry/Wet Contact Support for Digital Input ................. 14

Figure 3.2:Isolated Digital Input Connections ............. 14

3.3.2 Isolated Digital Output Connections ............................ 15

Figure 3.3:Isolated Digital Output Connections .......... 15

3.4 Field Wiring Considerations ........................................... 16

Appendix A Specifications ................................................. 18

A.1 Isolated Digital Input....................................................... 18

A.2 Isolated Digital Output .................................................... 18

A.3 Isolated Counter .............................................................. 18

A.4 General ............................................................................ 18

v Table of Contents

USB-4750 User Manual vi

1

2

Introduction

Sections include:

• Hardware Features

• Software Overview

Chapter 1 Introduction

Thank you for buying the USB-4750 data acquisition mod- ule. The
USB-4750 is
It features a unique
acquisition and control.

a powerful data acquisition (DAS) module for the USB port.

circuit design and complete functions for data

1.1 Hardware Features

USB-4750 features excellent measurement & control functions:

• 32 isolated digital input/output channels

• High-voltage isolation up to 2,500 VDC on all channels

• Dry/wet contact support

• Interrupt handling capability

• High-sink current for isolated output channels (100mA max./Channel)

• Digital output value retained after hot system reset

• Programmable Power-Up States for output channels

• Wiring ternimals on module

Note:

Yo u ca n inst al l up to sixteen USB-4750’s to a

system
BoardID

because of the restriction of device

Note:

The power output of an USB port is 500 mA,

while

the USB-4750 requir es 350 mA (Max.).

This means that if an USB hub is used,
need

an external power supply to support more

than one

USB-4750 device.

Note:

For detailed specifications of USB-4750, please
refer

to Appendix A, Specifications.

USB-4750 User Manual 2

it will

1.2 Software Overview

Omega offers a rich set of DLL drivers, third-party driver support and
application software
functions
function library to help boost your application performance and work
seamlessly with development tools such as Visual C++, Visual

of your device. The Device Drivers feature a complete I/O

on the companion CD-ROM to help fully exploit the

1.2.1 More on the CD

For instructions on how to begin programming in each development tool,
some tutorial chapters are included in the Device Drivers Manual
reference. Please
the Device
also look at
since they can

The Device Drivers Manual can be found on the companion CD-ROM.
Alternatively, if
system, The
Start button:

Start/Programs/Omega USB-4700 Series/ Device Driver’s Manual

The example source code can be found under the corresponding installa-

folder such as the default installation path:

tion

Pr o g r a m F i l e s /Omega/USB-4700/Examples

refer to the corresponding sections in these chapters on

Drivers Manual to begin your programming efforts. You can

the example source code provided for each programming tool,

get you very well oriented.

you have already installed the Device Drivers on your

Device Drivers Manual can be readily accessed through the

3 Chapter 1

Basic,

for your