Advantech PCI-1730U User Manual download pdf (Page 14)

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Signal Conditioning Modules and Terminal Boards

Features

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 max. depending on the selected gain

 Output Range ±10 V max.

 Overvoltage Protection ±30 V continuous

General

 Certiﬁcations CE

 Connectors

Controller: 1 x DB37 male connector

2 x 20-pin box header 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.

Ordering Information

 PCLD-789D Ampliﬁer and Multiplexer Board w/ 1m DB37 Cable

 PCL-10137-1 DB37 Cable, 1 m

 PCL-10137-2 DB37 Cable, 2 m

 PCL-10137-3 DB37 Cable, 3 m

 PCL-10120-1 20-pin Flat Cable, 1 m

 PCL-10120-2 20-pin Flat Cable, 2 m

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.

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