Advantech PC-LabCard PCI-1784 Bedienungsanleitung PDF herunterladen (Seite 10)

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Features

Signal Conditioning Modules and Terminal Boards

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

Applications

 Channel expansion

 Low level signal measurement

 Thermocouple measurement

 Signal ampliﬁcation and conditioning

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

 On-board cold-junction compensation circuits for direct thermocouple

measurement

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

shunt

 Second connectors on-board 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 cab�

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�

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 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com

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