User manual

Piper PA-31T Cheyenne X
Aerosoft GmbH 2007
78 79
78 79
Frequency Selection
The active frequency (to which the ADF is tuned) is displayed in the
left side of the window at all times. A standby frequency is displayed
in the right side when „FRQ” is annunciated. The standby frequency is
placed in „blind” memory when either FLT (Flight Time) or ET (Elapsed
Time) mode is selected.
With „FRQ” annunciated, the standby frequency is selected using
the frequency select knobs which may be rotated either clockwise or
counterclockwise. Pull the small inner knob out to tune 1’s. Push the
smaller inner knob in to tune 10’s. The outer knob tunes the 100’s and
the 1000’s up to 1799.
The standby frequency selected may then be put into the active window
by pressing the „FRQ” button. The standby and active frequencies will
be exchanged (flip-flopped), the new frequency will become active,
and the former active frequency will go into standby.
Operating Modes
Antenna (ANT) mode is selected and annunciated when the „ADF”
button is in the „out” position. ANT provides improved audio reception
from the station tuned and is usually used for identification. The
bearing pointer in the KNI 582 RMI and the HSI will be deactivated
and immediately turn to the 90° relative position and remain there
during ANT reception. ANT mode is not modeled in this release.
The ADF mode is selected and annunciated when the „ADF” button is
in the depressed position. ADF activates the bearing pointer in the KNI
582 RMI and the HSI, causing it to move without hesitation to point in
the direction of the station relative to the aircraft heading.
Outside of the United States some stations are unmodulated and use
an interrupted carrier for identification purposes. The BFO mode, acti-
vated and annunciated when the „BFO” button is depressed, permits
the carrier wave and the associated Morse code identifier broadcast
on the carrier wave to be heard. BFO modes are not modeled in this
release.