PCLD-789D is a front-end signal conditioning and channel multiplexing daughterboard for use with PC-LabCardTM product's analog input ports. It multiplexes 16 differential input channels into a single A/D converter input channel. You can cascade up to teh PCLD-789Ds, allowing a single data acquisiton card to access 166 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 instrumentatio 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-LabCardTM product. The board also contains a cold-junction sensing circuit that allows direct temperature measurement from thermocouple transducers. A wide variety of thermoncouples are supported with software compensation and linearization.