Advantech PCI-1752USO Manual de usuario descargar pdf (Pagina 14)

Features

Signal Conditioning Modules and Terminal Boards

12-14

Speciﬁcations

I/O

Cold-Junction +24.4 mV/° C, 0 V at 0° C

Compensation

Input Channels

16 differential

Input Conditions

Gains CMRR Nonlinearity Setting Time

1,000 125 dB 0.005% FSR 75 µsec.

100 115 dB 0.005% FSR 15 µsec.

10 105 dB 0.007% FSR 15 µsec.

1 85 dB 0.015% FSR 15 µsec.

Input Range

±10 V maximum, depending on the selected gain

Output Range

±10 V maximum

Overvoltage Protection

±30 V continuous

General

Certiﬁcations CE

Connectors

Controller: 1 x DB37 (male) connector

2 x 20-pin ﬂat cable connectors

for daisy chaining

I/O: Screw terminals

Dimensions (L x W)

205 x 114 mm (8.1" x 4.5")

Mounting

4 x screw holes for ﬂat surface mounting

Power Consumption

+5 V @ 30 mA max, +12 V @ 80 mA max



PCLD-789D

Ampliﬁer and Multiplexer Board

Multiplexes 16 differential inputs to one A/D input

Expands a PC-LabCard™ product’s analog inputs to 128 channels

High-grade instrumentation ampliﬁer provides switch selectable gains of 1,

2, 10, 50, 100, 200, 1,000

Onboard cold-junction compensation circuits for direct thermocouple

measurement

Built-in signal conditioning functions include ﬁlter, attenuator and current

shunt

Second connectors onboard allow daisy chaining

Screw-clamp terminal blocks permit easy and reliable connections



Block Diagram

Pin Assignments

Introduction

PCLD-789D is a front-end signal conditioning and channel multiplexing daughterboard for use with PC-LabCard™ product’s analog input ports. It multiplexes 16 differential input

channels into a single A/D converter input channel. You can cascade up to ten PCLD-789Ds, allowing a single data acquisition card to access 160 analog input channels.

PCLD-789D has DB37 and 20-pin ﬂat cable connectors and lets your PCL-818L or PCL-818HD access up to 128 channels without using an additional digital output cable to select

channels.

The PCLD-789D uses a high-grade instrumentation ampliﬁer that provides switch-selectable gains of 1, 2, 10, 50, 100, 200 and 1,000. This ampliﬁer lets you accurately measure

low-level signals with your PC-LabCard™ product. The board also contains a cold-junction sensing circuit that allows direct temperature measurement from thermocouple transducers.

A wide variety of thermocouples are supported with software compensation and linearization.

Ordering Information

PCLD-789D Ampliﬁer and Multiplexer Board with DB37 connector

and 20-pin ﬂat-cable connectors. (Includes DB37 and

20-pin ﬂat cable assemblies)



Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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