Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 329

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
27
CESSNA 400 NA V / COM
(TYPE RT-485A)
8. AUTOPILOT COUPLED ANNUNCIATOR (AP/CPLD) - Illuminates amber
when a 400B or 400B IFCS autopilot is coupled to NAV VOR/LOC converter
output (non-operational with 200A. 300A. 400. 400A and 400A IFCS autopilots).
9. NAV VOLUME CONTROL (VOL) - Adjusts volume of navigation receiver audio.
10. SQUELCH CONTROL - Used to adjust signal threshold necessary to activate
COM receiver audio. Clockwise rotation increases background noise (decreases
squelch action); counterclockwise rotation decreases background noise.
11. TRANSMIT ANNUNCIATOR (XMIT) - Illuminates green when transmitter
output is normal while mike is keyed.
12. COMMUNICATION RECEIVER FREQUENCY SELECTORS - Outer knob
changes COM frequency in I-MHz steps between 118 and 135 MHz; inner knob
changes COM frequency in .05 MHz steps between .025 and .975 MHz or between
.000 and .950 MHz depending on selection of C button.
13. COM OFF-VOLUME CONTROL (OFF-VOL) - Combination ON/OFF switch and
volume control; turns on Nav/Com set and controls volume of COM receiver
audio.
14. BACK-COURSE LAMP (BC) - Amber light illuminates when an autopilot's
back-course function is engaged and receiver is tuned to a localizer frequency;
indicates course deviation pointer is reversed. BC light dimming is only available
when installed with an audio control panel incorporating the annunciator lights'
DA Y / NITE selector switch.
15 COCRSE INDEX - Indicates selected VOR COURSE.
1'" COCRSE DEVIATION POINTER - Indicates course deviation from selected
omni course or localizer centerline.
17. GLIDE SLOPE "GS" FLAG - When visible. red GS flag indicates unreliable glide
slope slgnal or improperly operating equipment. Flag disappears when a reliable
glide slope signal is being received.
18. GLIDE SLOPE DEVIATION POINTER - Indicates deviation from ILS glide
slope.
19. NAV/TO-FROM INDICATOR - Operates only with a VOR or localizer signal.
Red NAV position (Flag) indicates unusable signal. With usable VOR signal.
indicates whether selected VOR course is TO or FROM station. With usable
localizer signal. TO flag is in view.
21;
RECIPROCAL COURSE INDEX - Indicates reciprocal of selected VOR course.
21. ACTO:vIATIC RADIAL CENTERING (ARC) PUSH-TO/PULL-FR SELECTOR -
In center de tent. functions as conventional OBS. Pushed to inner (Momentary On)
pOSition. rotates OBS course card to center course deviation pOinter with a TO
flag. then returns to conventional OBS selection. Pulled to outer detent. continu-
ously drives OBS course card to indicate bearing from VOR station. keeping
Figure
1.
Cessna 400 Navl Corn (Type RT-485A). Operating Controls and
Indicators (Sheet 3 of 4)
1 October 1979
5