Chapter 4: Using the web interface
98-126882-B
Setting up the interfaces
78
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 of the vehicle 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).
Summary of Contents for Explorer 727
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