Overview

The DIF16 card contains 16 optically coupled discrete inputs.

Each input termination of the DIF16 card is completely transient protected and optically coupled to isolate surge currents and voltages from entering the main circuit board. The DIF16 card provides R/C filtering and logic level conversion components to convert noisy input signals into clean logic levels which the processor can read without error.

The DIF16 card has protection ground and field sourcing voltage terminal blocks. Proper fusing is also provided to protect the circuit. Each channel has an LED which turns on when an input field contact has been generated. Two power indicating LEDs are also included. They are lit when power has been applied to the card.

The DIF16 card connects to our Micro Expander Bus (MEB) module through a 16 pin ribbon cable.