Installation Instructions

190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 5-65
5.5.4.8.2.5 Other GMA 35 Configuration Settings
Marker Beacon high sense threshold
The marker high sensitivity threshold configures the marker beacon signal strength that is required to
activate the marker beacon signal in marker high sense mode. This is adjustable from -31 to +31. A value
of -31 will cause the marker beacon signal to activate at lower signal strength; therefore the beacon signal
will remain active for a longer period of time while on approach. A value of +31 will require the marker
beacon signal strength to be much stronger to activate, which results in the marker beacon activating for a
very short duration while flying directly over the marker beacon. The default value is 0.
Marker Beacon low sense threshold
The marker low sensitivity threshold configures the marker beacon signal strength that is required to
activate the marker beacon signal in marker low sense mode. This is adjustable from -31 to +31. A value
of -31 will cause the marker beacon signal to activate at a lower signal strength, therefore the beacon
signal will remain active for a longer period of time while on approach. A value of +31 will require the
marker beacon signal strength to be much higher to activate, which results in the marker beacon
activating for a very short duration while flying directly over the marker beacon. The default value is 0.
Marker external lamp lighting offset
When external marker lamps are connected to the GMA 35, this setting allows the lighting level to be
adjusted up or down. It applies an offset to the lighting input that the marker lamps are tracking. If the
lamps are too bright, adjust this number down; if the lamps are too dim, adjust this number up. This
setting is configurable from -31 to +31. The default is 0.
5.5.4.8.2.6 Connected Radios to GMA 35 Configuration
From the main Audio Panel configuration page, touch the
Connected Radios key to configure which radios or systems
are connected to the GMA 35. Compare the interfaced radios
in the aircraft to the GMA 35 Pin function list in Section 4.2 to
determine which radios are connected to the applicable pins in
the GMA 35. The following radios can be configured as
Present or Not Present:
• COM 2
• COM 3
• NAV 1
• NAV 2
• RCVR 3
• RCVR 4
• RCVR 5
• TEL
• Music 1
• Music 2
• Marker Beacon
Figure 5-39. Connected Radios
Configuration page