The PCLD-789D is a front-end signal conditioning and channel multiplexing daughterboard for use with PC-LabCard 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. The PCLD-789D has DB-37 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 1000. This amplifier lets you accurately measure low-level signals with your PC-LabCard. 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.

Features:

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, 1000

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

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