What is indicator circuitry?

Indicator Circuity

The indicator (IND) is a set of DC Switch Circuitry that is designed to switch in parallel with the RF switching.
The input and output of the indicator switch are totally isolated from RF and any other actuator voltage.
The input and output of the IND switch can be connected via ‘IND’ solder terminal.

An example of how an indicator can be connected to light the LED to indicate the closure of an RF position is shown in Figure 1.

The function of an indicator switch is to light the LED 1 when RF at Port C-1 is closed and to light the LED 2 when RF at Port C-2 is closed.

The indicator also can be used as a data transmitter from computer or other equipment.