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OME-DB-889D Multiplexer Board
1. Function Description
The OME-DB-889D is an expansion multiplexer / amplifier board for use with
OME-A-82X, OME-PCI-1800 series. Each OME-DB-889D multiplexes 16
differential analog input channels into one analog input of the DAS board. The high
grade instrumentation provides software programmable gains of 0.5, 1, 5, 10, 50, 100,
500 and 1000.
Thermocouple measurements are handled easily with OME-DB-889D. The
board includes cold junction sensing and compensation circuitry that provides a
scaling of 24.4mV/°C. Biasing restores are includes for open thermocouples
detentions of voltage measurements or 112 channels of thermocouple measurement.
1.1 Features
z Connects directly to OME-A-82X, OME-PCI-1800 series boards with D-sub 37
connectors.
z Cold-junction compensation for thermocouples and thermocouple open detection.
z Software-programmable instrumentation amplifier
z Gain of 0.5, 1, 5, 10, 50, 100, 500, 1000
z Daisy chain up to ten OME-DB-889D boards
1.2 Applications
z Energy management
z Signal conditioning
z Analog Multiplexer
1.3 Specification
z Accepts thermocouple type : J, K, T, E, S, R, B
z Cold-junction Compensation : +24.4mV/°C , 0V at 0°C
z Overvoltage protection : ±30V Continuous
z Common mode voltage : ±10V max.
z Analog output Voltage to A/D card :±10V
OME-DB-889D User’s Manual
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