Marker Beacon - Garmin GMA 35 Installation Manual

4.8 Marker Beacon

Pin Name
MARKER ANTENNA IN HI
MARKER ANTENNA IN LO
INNER MARKER LAMP OUT
OUTER MARKER LAMP OUT
MIDDLE MARKER LAMP OUT
MIDDLE MARKER SENSE OUT
MARKER HI SENS* IN
Marker lamp outputs provide a variable dc voltage between 3V and 9V that drive incandescent lamps
(>56 Ohms). Lamp brightness can be configured to follow the lighting bus input or respond to settings
from a GTN 750.
MIDDLE MARKER SENSE OUT has the same behavior as MIDDLE MARKER LAMP OUT, but with
half the voltage output into the rated minimum resistance of 4.7k Ohms.
MARKER HI SENS* IN is a discrete digital input that when grounded selects high sensitivity mode on the
marker receiver.
NOTE
When connected to a user interface controller (e.g. GTN 750), MARKER HI SENS* IN is
configured for no function.
190-00858-11
Rev. H
Table 4-16. Marker Beacon
Connector Pin
P3501 1
P3501 2
P3501 36
P3501 37
P3501 38
P3501 39
P3502 13
GMA 35/35c Installation Manual
I/O
In
--
Out
Out
Out
Out
In
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