User manual

Page 69
Aircraft Operation Manual
Piper Cheyenne I, IA, II, IIXL
For ight simulation use only
Active
Frequency
Standby
Frequency
Power
Switch
Photocell
for Automatic
Dimming
Frequency Transfer
Button
Frequency
Selector
Knobs
KY 53 TSO´d Navigation Receiver Operation
Power Switch
This knob controls ON/OFF function for the KY53. Volume selection and IDENT
function are not modeled.
Frequency Selection
By rotating the concentric frequency selector knobs either clockwise or counter-
clockwise, the desired operating frequency can be dialed into the standby dis-
play window. A clockwise rotation will increase the displayed frequency number,
while a counterclockwise rotation will decrease it. The larger selector knob is
used to change the MHz portion of the frequency display; the smaller knob chan-
ges the kHz portion in 50 kHz steps. At either band edge of the 108.00 to 117.95
MHz frequency spectrum, an off-scale rotation will wrap the display around to
the other frequency band-edge (i.e., 117.95 advances to 108.95 with MHz knob
rotation, or 117.00 with kHz knob rotation). DME and optional internal glideslo-
pe channeling are also controlled by these selector knobs.
NAV Frequency Operation
The desired operating frequency is rst entered into the standby display. To acti-
vate, push the transfer button. This will interchange the frequencies in the ‘use’
and ‘standby’ displays and tune the receiver to the new operating frequency.