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PIPER AIRCRAI:T CORPORATION
PA-28R-20I, ARROW
SECTION 1 - DESCRIPTION AND OPERATION
SECTION 9
SUPPLEMENT 5
The KNS 80 is a panel mounted navigation system consisting of a
VOR /Localizer Receiver. DME Interrogator. RNAV Computer. and Glide
Slope Receiver in a single unit. When combined with an appropriate CDI
Indicator. the unit becomes a complete navigation system featuring two
modes ofVOR. two modes of RNA V. and ILS. The unit also simultaneously
displays distance to station (waypoint). velocity to station (waypoint). time
to station (waypoint). and chosen parameter (frequency. radial or distance)
of one of the four waypoints. Separate system flexibility is maintained with a
DME HOLD button which allows ''freezing'' the DME frequency while
tuning to a different ILS or VOR frequency. The various modes. (VOR.
VOR PAR. RNV ENR. and RNV APR). are selected by pressing the
appropriate YOR or RNA V pushbutton.lfan ILS frequency is placed in the
active data. the system will automatically go to the ILS mode. When
switched out of an ILS frequency the system will revert back to the mode in
which it was at the time the ILS frequency was selected.
When energized. the system will go to the mode in which it was when
switched off. In addition. it will retain all waypoint data through a power
shutdown.
Additional features· include an automatic dimming circuit to
compensate for changes in ambient light level. and a CMOS memory
powered by two silver-oxide watch cells enabling long term waypoint
storage (2 years typical cell life). If the batteries should become weak.
waypoint storage will be lost and the radio will tune to 110.00 MHz.
waypoint I in USE and DSP. VOR mode. and dashes in the DME display.
The unit may then be operated normally during the flight. but no memory
will be retained after turning the radio master switch OFF.
The KNS 80 Digital Area Navigation System consists of the following
controls and displays:
DISPLAYS
(a) NM Display
(I)
VOR and VOR PAR (VOR Parallel) Modes
Displays DME distance.
o
to 99.9 NM in 0.1 NM steps.
too
to 200 NM in I NM steps.
Most significant digit is zero blanked.
Displays dashes whenever DME goes into search.
ISSUED: SEPTEMBER 15,1988
REPORT: VB-t365
9 of 14,
9-29
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