Advantech 48/24-Channel Digital Input/Output USB Module USB-4751/4751L Manual do Utilizador descarregar pdf (Página 8)

USB-4751/4751L User Manual 2

Chapter 1 Introduction

Thank you for buying the Advantech’s USB-4751/4751L data acquisition

module. The Advantech USB-4751/4751L is a powerful data acquisition

(DAS) module for the USB port. It features a unique circuit design and

complete functions for data acquisition and control.

1.1 Hardware Features

USB-4751/4751L features excellent measurement & control functions:

• 48/24 TTL digital I/O lines

• 50-pin Opto-22 compatible box header

• Emulates mode 0 of 8255 PPI

• Buffered circuits for higher driving capacity than 8255

• Interrupt handling

• Timer/ Counter interrupt capability

• Supports both dry and wet contact

• 50-pin Opto-22 compatible box header

• Compatible with USB 1.1/2.0

• Bus-powered

Note: You can install up to sixteen USB-4751/4751L’s

to a system because of the restriction of device

BoardID

Note: The power output of an USB port is 500 mA,

while the USB-4751/4751L requires 500mA

(Max.). This means that if an USB hub is used, it

will need an external power supply to support

more than one USB-4751/4751L device.

Note: For detailed specifications of USB-4751/4751L,

please refer to Appendix A, Specifications.

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Advantech 48/24-Channel Digital Input/Output USB Module USB-4751/4751L Manual do Utilizador Página 8