KVH Industries TracPhone FB250 User Manual page 122

Configuring the discrete I/O interface
Overview
The I/O interface on the terminal has 5 configurable I/O pins. You can set up
the function of each pin in the web interface. The default functions of the I/O
pins are as follows:
• Pin 1: Ringer output.
This pin changes state from low to high when the terminal is notified of an
incoming call from the satellite interface. When the call is answered, or
the caller gives up and releases the call, the pin changes back to low.
• Pin 2: Warning/Error output.
This pin provides an external signal that indicates active warning/error
condition(s). The signal stays active until all warnings/errors are cleared.
• Pin 3: Mute output.
The mute output pin provides an external signal that is active during a
phone call. The signal can be used to mute external equipment, such as a
car-radio.
• Pin 4: Radio silence input.
When active the terminal observes Radio Silence. The terminal gracefully
closes all open connections, and deregisters from the BGAN network. No
transmission is allowed until the pin is deactivated.
• Pin 5/8: Ignition input.
The ignition function uses pin 5 together with pin 8 (DC in). Connect the
appropriate pin to the ignition key switch as follows:
If the input should be active high, connect pin 5 to Ground, and use pin 8
to switch on the terminal by pulling it high (10-32 V DC).
If the input should be active low, connect pin 8 to positive DC voltage, and
use pin 5 to switch on the terminal by pulling it low (< 1.2 V DC).
Note
The Ignition function is normally not used in maritime
installations. You may use the Remote on/off function in the
power connector instead.
Chapter 4: Using the web interface
Setting up the interfaces 109