Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 289

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
20
CESSNA 300 TRANSPONDER
AND ENCODING ALTIMETER
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.)
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. 1000-FOOT DRUM TYPE INDICATOR - Provides digital altitude readout in
1000-foot increments between -1000 feet and +35,000 feet. When altitude is below
10,000 feet, a diagonally striped flag appears in the 10,000 foot window.
9. OFF INDICATOR WARNING FLAG - Flag appears across altitude readout
when power is removed from the altimeter
to
indicate that readout is not reliable.
10. lOO-FOOT DRUM TYPE INDicATOR - Provides digital altitude readout in 100-
foot increments between 0 and 1000 feet.
11. 20-FOOT INDICATOR NEEDLE - Indicates altitude in 20-foot increments
between 0 feet and 1000 feet.
12. ALTIMETER SETTING SCALE - DRUM TYPE - Indicates selected altimeter
setting in the range of 27.9 to 31.0 inches of mercury on the standard altimeter or
950 to 1050 millibars on the optional altimeter.
13. ALTIMETER SETTING KNOB - Dials in desired altimeter setting in the range of
27.9 to 31.0 inches of mercury on the standard altimeter or 950 to 1050 millibars on
the optional altimeter.
14. REMOTE ID SWITCH (XPDR IDENT) - Same as panel-mounted ID switch
described in Item 3:
Figure
1.
Cessna 300 Transponder and Encoding Altimeter (Sheet 2 of 2)
1 October 1979
3