190-02087-10
GDL 50(R)/51(R)/52(R) Installation Manual
Rev. 2
Page 2-7
2.9
Front Panel
The GDL 5X/5XR units have several status LEDs visible on the face of the unit that indicate the unit’s
current status. Table 2-6 describes the operation of the status LEDs. GDL 5X LEDs are auto-dimming,
GDL 5XR LEDs are fixed brightness.
Table 2-6 GDL 5X/5XR Status LEDs
LED
Color/
State
Battery/Power
Connext
GPS
ADS-B
(GDL 50/50R/
52/52R only)
SXM
(GDL
51/51R/52/
52R only)
OFF
Unit off
No active
connection
No GPS fix
No Ground
Signal
No signal
RED
*Charging (solid)
Fault (flashing)
Not used
Fault
Fault
Fault
ORANGE
*Battery <=20%
N/A
Firmware
update
N/A
Firmware
update
GREEN
*Battery >= 20%
OR
External power is
applied
*Battery saver
feature (flashing)
N/A
GPS fix
Ground
station signal
received in
the last
minute
Minimum
required or
better signal
BLUE
N/A
Active connection
(solid)
OR
Pairing list cleared
(flashing)
N/A
N/A
N/A
*GDL 5X only
