Cessna 182S Pilot Operating Handbook page 262

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 2 - FAA APPROVED
CESSNA
MODEL 182S
3. MODE ANNUNCIATORS - Displays the operating mode of the
transponder.
I
4. REPLY INDICATOR (R) - "R " is illuminated momentarily when
the transponder is replying to a valid interrogation and during
the 18
±
2 seconds following the initiation of an Ident.
5. MODE SELECTOR KNOB - Controls application of power and
selects transponder operating mode as follows:
OFF - Turns set off.
SBY - Turns set on for standby power and code selection.
"SBY" is annunciated.
TST - Self-test function. The transmitter is disabled. All
display segments will illuminate.
ON - Turns set on and enables transponder to transmit
Mode A (aircraft identification) reply pulses. ON is
annunciated.
AL T - Turns set on and enables transponder to transmit
either Mode A (aircraft identification) reply pulses and
Mode C (altitude reporting) pulses selected
automatically by the interrogating signal. AL T is
annunciated.
6. VFR CODE BUTTON (VFR) - Pressing the VFR Button will
cause a pre-programmed Mode A reply code to supersede
whatever Mode A reply code was previously in use. Button
illumination is controlled by the RADIO LT dimming rheostat
7. CLEAR BUTTON (C LR) -- Pressing the CLR button will delete
the last Mode A code digit entered.
8. NUMERIC KEYS 0-7 - Selects assigned Mode A reply code.
The new code will be transmitted after a 5-second delay.
Figure 1. Bendix/King KT 76C Transponder with Blind Encoder
(Sheet 2 of 2)
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