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16 Channel Analog Multiplexer
OME-DB-889D
PLACE ORDER - Connects Directly to OME-PCI-1800 (H/L), OME-PCI-1802 (H/L), OME-A-822PG, OME-A-8111 with D-Sub 37-Pin Connectors
- Cold Junction Compensation for Thermocouples, Thermocouple Open Circuit Detection
- Input Filtering
- Software Programmable Instrumentation Amplifier Gains of 0.5, 1, 5, 10, 50, 100, 500, 1000
- Daisy Chain up to 10 OME-DB-889Ds
Description
Description
The OME-DB-889D is an expansionmultiplexer/amplifier board for usewith OME-PCI-1800 series families.Each OME-DB-889D multiplexes16 differential analog input channelsinto one analog input of theDAS board. The high gradeinstrumentation amplifier providessoftware programmable gains of0.5 , 1, 5, 10, 50, 100, 500 and 1000.Thermocouple measurementsare handled easily with theOME-DB-889D. The board includescold-junction sensing andcompensation circuitry that providesa scaling of 24.4 mV/°C. Biasingresistors are included for openthermocouple detection. TheOME-DB-889D can be cascaded toa total of 128 channels of voltagemeasurements or 112 channels ofthermocouple measurement.
The OME-DB-889D has two 37-pinD-sub connectors and two 20-pinheaders. One D-sub connector getsconnected to the A/D board’sanalog input connector while theother D-sub connector can beused to cascade to anotherOME-DB-889D multiplexer.The 20-pin header is themultiplexer’s control logic circuit.One of the 20-pin headers isconnected to the A/D board'sdigital output port via 20-pin flatcable. The other 20-pin header isused to cascade to anotherOME-DB-889D multiplexer.
Specifications
Accepts Thermocouple Type:
J, K, T, E, S, R, B
Cold Junction Compensation:
+24.4 mV/°C (0.1°C/bit), 0.0 V at 0.0°C
Over Voltage Protection:
±30 V continuous
Common Mode Voltage:
±10 V max
Analog Output Voltage: ±10 V
Power Requirement:+5 V @120 mA
Dimensions:
114 H x 203 mm W (4.5 x 8.0")
Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature:
-20 to 70°C (-4 to 158°F)
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