User Guide

Series III Avionics
Pilot's Guide
Page 13
VNS-41A Display
When the VNS-41A is turned on, the last display
before turnoff is displayed again.
The upper line of the display always shows the
active frequency (indicated by the letters ACT. The
lower display may show the standby frequency,
digital radial or bearing, or LOC annunciation,
depending on the FUNCTION SELECTOR setting.
When two frequencies are displayed, rotating the
FREQUENCY knobs changes the bottom (standby)
frequency.
If the FUNCTION SELECTOR switch is set to RAD
when a VOR frequency is active (shown on the top
line), the bottom line displays the radial the aircraft
is on FROM the VOR station.
In this mode, the FREQUENCY TRANSFER button
is disabled.
If the FUNCTION SELECTOR switch is set to BRG
when a VOR frequency is active (shown on the top
line) the bottom line displays the bearing TO the
VOR station.
Three dashes on the bottom line indicates a flag
condition. This flag means that RAD or BRG has
been selected on the FUNCTION SELECTOR
switch but cannot be displayed because of
insufficient signal or during VOR station passage.