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Post-Installation Configuration & Checkout
Audio Ground Volume
Aircraft Length
Aircraft Width
Antenna Length Offset
Antenna Width Offset
4.2.1.4
Discrete Command
The Discrete command displays the states of the GDL 90 discrete inputs and outputs.
>discrete
4.2.1.5
External Command
The External command displays status of the connections to external systems. This is intended for
checking system wiring and status of external systems.
>external
4.2.1.6
GPSstatus Command
The GPSstatus command displays the current status and data from the internal GPS Engine. Response
includes GPS 3D fix, tracked satellites, current latitude, current longitude and UTC time.
>gpsstatus P1
P1
Once / On
/ Off
4.2.1.7
Playaudio Command
The Playaudio command causes the GDL 90 to output 1 kHz tone for a second. This is intended for
testing the audio connections in the aircraft.
>playaudio
4.2.1.8
Reset Command
The Reset command causes the GDL 90 to reset itself.
4.2.1.9
Rxmsg Command
The Rxmsg command displays the number of good messages received in last one second.
>rxmsg P1
4-6
5
25 feet
20 feet
0 feet
0 feet
Description
ONCE = output the current GPS status once
ON = output GPS status once per second
OFF = stop outputting GPS status
560-1049-00 Rev B
GDL 90 Installation Manual
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