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24-Channel OPTO-Isolated Input Board
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
OME-DB-24P and OME-DB-24PD
  • Optically Isolated Digital Input Channels
  • Connects Directly to OME-PIO-D144
  • AC/DC Signal Input
  • AC Signal Input with Filter
  • Input Buffer with Voltage Comparators
  • Isolated Digital Input Sensing
 Manuals (contact with email : [email protected])


The OME-DB-24P is a 24 channelisolated digital input daughter boardfor OME-PIO-D144 digital inputboard. The optically isolated inputsof the OME-DB-24P consist of a bi-directional opto-couples with aresistor for current sensing. You canuse the OME-DB-24P to sense DCsignals from TTL levels up to 24 V.You can also use OME-DB-24P tosense a wide range of AC signals.The OME-DB-24P registers aconstant logic high if the frequencyof the input AC signal is greater orequal to 1 kHz, and if the voltage ofthe AC signal is at least 4 Vrms. Ifyou are using an AC input signal,you must short the AC filter jumper.You can use the board to isolate thecomputer from large common-modevoltages, ground loops and voltagespikes that often occur in industrialenvironments.

24 optically isolateddigital input channels
Compatibility: TTL compatible
Connector: OME-DB-24P, one50-pin header; OME-DB-24PD,
one 50-pin header and one 37-pinD-sub connector

Number of channels:
24, each with
its own ground reference isolatedfrom other channels
Maximum Input Voltage: 24 Vdc or 24 Vac
Input Impedance: 1.2 K Ω

5 V inputs:
4 mA perchannel (min)
24 V inputs: 20 mA perchannel (min)
Response Time: 20 µswithout filter/2.2 ms with filter
Power Supplies: +5 V @336 mA max
Dimensions: 132 H x 220 mm W(5.2 x 8.7")
Operating Temperature: 0 to 60°C(32 to 140°F)
Storage Temperature: -20 to 70°C(-4 to 175°F)
Humidity: 5 to 90%RH non-condensing
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