User Guide
Series III Avionics
Pilot's Guide
Page 33
The top line of the display is always the active
frequency, indicated by the letters ACT. The
number 1 or 2 below the letters ACT indicate the
ADF System Number when more than one system
is installed.
Data in the lower line of the display depends on
position of FUNCTION SELECTOR.
In ANT, ADF, or BFO mode, the bottom line of the
display indicates the standby frequency.
In BRG mode, the bottom line of the display
indicates the magnetic bearing of active station. In
this mode the active frequency can be tuned
directly.
Dashes indicate a flag condition.
NOTE:
FAIL 1, FAIL 2 or FAIL 3, 4, 5, 6,
Annunciation indicates a System fault; the
system is not usable in these conditions.