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17
PILOT'S OPERATING
HANDBOOK
CESSNA
3OO
TRANSPONDER
SUPPLEMENT
AND ALTITUDE ENCODER (BLIND)
2.
Function Switch --
ON.
3.
DIM Control -- ADJUST
iight brilliance
of reply lamp.
NOTE
During normal
operation
with
function switch
in
ON
position, reply Iamp flashes indicating transponder
rep-
lies to i.nterrogations.
4.
ID Button --
DEPRESS
momentarily when instructed by ground
controller to "squawk IDENT" (reply lamp
will
glow
steadily'
indicating IDENT operation).
TO
TRANSMIT
MODE
C
(ALTITUDE REPORTING)
CODES
IN FLIGHT:
1.
Reply-Code Selector Knobs -- SELECT
assigned
code'
2.
Function
S',vitch
-- ALT.
NOTE
When directed
by
ground controller
to "stop
altitude
squawk", turn Function Switch to
ON
for
Mode
A
opera-
tion
onIy.
NOTE
Pressure
altitude
is
transmitted by the transponder for
altitude squawk
and conversion
to indlcated altitude
is
done
in
ATC computers. Altitude
squawked rvil1 oniy
agree
with
indicated altitude when the
local
altimeter
setting in
use
by the
ground controller is
set
in
the
aircraft
altimeter.
3.
DIM Control -- ADJUST
light brilliance
of reply lamp.
TO
SELF-TEST TRANSPONDER OPERATION:
1.
Function Switch
--
SBY and
wait
30
seconds
for
equlpment
to
warm-up.
2.
Function Switch --
ON
or ALT.
3.
TST
Button
--
DEPRESS
(reply Iamp
should
light brightly regard-
less of DIM control setting).
1.
TST
Button --
Release
for normal operation.
1
July
1979
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