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24 Channel Opto-Isolated Input Board with D-Sub 37 connector


24 Channel Opto-Isolated Input Board with D-Sub 37 connector

  Price:  $369.00  

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program applicationThe DB-24P is a 24 channel isolated digital input daughter board for DIO24, DIO48, DIO144, PIO-D144, and OPTO-22 Compatible digital input board or any 722 or 724 digital input board . The optically isolated inputs of the DB-24P consist of a bi-directional opto-couple with a resistor for current sensing . DB-24P can be used to sense a DC signal from TTL levels up to 24V. DB-24P can also be used to sense a wide range of AC signals. The DB-24 P registers a constant logic high if the frequency of the AC input signal is greater or equal to 1 kHz, and if the voltage of the AC signal is at least 4Vrms. If using an AC input signal, the AC filter Jumper must be shorted. The board can be used to isolate the computer from large common-mode voltages, ground loops, and voltage spikes that often occur in industrial environments.

  • Optically isolated digital input channels
  • Connects directly to:
    • DIO24
    • DIO48
    • DIO144
    • OPTO-22 compatible digital input card
    • Any 722, 724 OPTO-22 Compatible digital input board
  • AC/DC Signal Input
  • AC Signal Input with filter
  • Input buffer with voltage comparators
  • Isolated digital input sensing
  • Testing Automation


  • I/O connector Electrical Specifications
  • Configuration : 24 optically isolated digital input channels
  • Compatibility : TTL compatible
  • Digital Input
  • Number of channels : 24
    • Each with its own ground reference isolated from other channels
  • Maximum input voltage :24 VDC or 24 VAC
  • Digital Logic Level
LEVEL Minimum Maximum
Input low voltage (DC or peak AC) 0 +/-1V
Input high voltage DC /1kHz AC +/-2.8VDC, 4Vrms +/-24VDC 24VAC
  • Input impedance : 1.2k
  • Source Current
  • 5V inputs : 4mA/channel minimum
  • 24V inputs : 20mA/channel minimum
  • Response Time :20us without filter / 2.2ms with filter
  • Power Supplies : +5v :336mA /maximum
  • Board Dimension : 220 mm x 132 mm
  • Operating Temperature : 0° - 60°C
  • Storage Temperature : -20°C - 70ºC
  • Humidity : 5% to 90 % noncondensing

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