APEX
™
Exciter Incorporating FLO
™
Technology
Details of the Exciter Status Screens
Navigating the LCD Display Screens
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WARNING: Disconnect primary power prior to servicing.
3.4.6.5
GPS Status Screen
GPSStatus.bmp
Figure 3-29 Front Panel Board Status Screen
This screen gives the status of the Internal GPS (global positioning system) receiver. The
GPS is required to synchronize the super frame output transmission time of the various
transmitters in a wide area single frequency network.
This screen provides the information, such as time and position, shown on the screen, but
to do so, the receiver must track three satellites. The screen shows the number of visible
satellites and the number of tracked satellites.
If no GPS antenna signal input is present at the ANT rear panel connector, this will display
the last results obtained when the GPS antenna signal was disconnected from the exciter.
The exciter gives no indication that the GPS antenna input is disconnected.
The satellite receiving antenna must have an unobstructed view of most of the sky to be
able to see and track the required three satellites. High power RF from nearby transmitters,
or a blocked view of a significant portion of the sky may interfere with the operation of the
satellite receiver.
