6
Garmin GDL 50/51/52 User’s Guide
190-02087-02 Rev. A
Figure 2 GDL 52 LEDs
Table 1 GDL 5X Status LEDs
LED Color/
State*
Battery
Connext
GPS
ADS-B
GDL 50/52
SXM
GDL 51/52
OFF
Unit off
No active
connection
No GPS
fix
No 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
Received at
least 1 ground
station in past
60 seconds
Marginal -
good signal
BLUE
N/A
Active connection
OR pairing list
cleared (flashing)
N/A
N/A
N/A
*LEDs are auto-dimming.
