. 4
CESSNA 300 TRANSPONDER
PILOT'S OPERATING HANDBOOK
AND ALTITUDE ENCODER (BLIND)
SUPPLEMENT
1.
FUNCTION SWITCH - Controls application of power and selects transponder
operating mode as follows:
OFF - Turns set off.
SBY - Turns set on for equipment warm-up or standby power.
ON - Turns set on and enables transponder to transmit Mode A (aircraft
identification) reply pulses.
ALT - Turns set on and enables transponder to transmit either Mode A (aircraft
identification) reply pulses or Mode C (altitude reporting) pulses
selected automatically by the interrogating signal.
2.
REPLY LAMP - Lamp flashes to indicate transmission of reply pulses; glows
steadily to indicate transmission of IDENT pulse or satisfactory self-test opera-
tion. (Reply lamp will also glow steadily during initial warm-up period.)
Figure 1. Cessna 300 Transponder and Altitude Encoder (Blind)
(Sheet 1 of 2)
2
1 July 1979
.4
PILOT'S OPERATING HANDBOOK
CESSNA 300 TRANSPONDER
SUPPLEMENT
AND ALTITUDE ENCODER (BLIND)
3.
IDENT (ID) SWITCH - When depressed, selects special pulse identifier to be
transmitted with transponder reply to effect immediate identification of aircraft
on ground controller's display. (Reply lamp will glow steadily during duration of
IDENT pulse transmission.)
4.
DIMMER (DIM) CONTROL - Allows pilot to control brilliance of reply lamp.
5.
SELF-TEST (TST) SWITCH - When depressed, causes transponder to generate a
self-interrogating signal to provide a check of transponder operation. (Reply
lamp will glow steadily to verify self-test operation.)
6.
REPLY-CODE SELECTOR KNOBS (4) - Select assigned Mode A reply code.
7.
REPLY-CODE INDICATORS (4) - Display selected Mode A reply code.
8.
REMOTE-MOUNTED DIGITIZER - Provides an altitude reporting code range of
-1000 feet up to the airplane
'
s maximum service ceiling.
Figure 1. Cessna 300 Transponder and Altitude Encoder (Blind)
(Sheet 2 of 2)
1 July 1979
3
