Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 322

CESSNA 800 ALTITUDE PILOT'S OPERATING HANDBOOK
ENCODING/ ALERTING/PRESELECT SUPPPLEMENT
to the altimeter and the warning flag is out of view. However, for
transmission of the altitude information to the ground controller, the
MODE C (ALT) function must be selected on the transponder.
ALTITUDE ALERT:
NOTE
The altitude alerter must be used with a properly function-
ing 800 encoding altimeter for all operation. The altitude
preselect function is usable only when the airplane is
equipped with the Integrated Flight Control System.
During flight, altitude alert operation of the altitude alerter is auto-
matic within the preestablished alert range . Operation may be verified on
the ground as follows:
6
1.
Turn on airplane master and avionics power switches. Altimeter
power-off warning flag should disappear.
NOTE
When using the encoding altimeter to simulate altitude
inputs, no altitudes below 100 feet shall be used for testing.
If
the combination of station altitude (near sea level) and
pressure presents a below 100 foot situation, then preset
.lowest obtainable altitude (above 100 feet) on altimeter and
perform the upper range of the test specified in steps 5 and
6. Following this test, preset the altitude alerter for 1100 to
1500 feet above the previous preset altitude, and then
perform steps 3 and 4 for the lower altitude portion of the
test.
2. Set altitude selector switches to slightly more than 1000 feet above
altitude indicated on the encoding altimeter. Altitude is displayed
on readout.
3. Begin to turn altimeter baroset knob to set altimeter reading to
agree with selected altitude. When altitude reading reaches about
1000 feet below selected altitude, a one-second tone is heard and
amber LO ALERT lamp lights.
4. Continue to turn baroset knob toward selected altitude. When
altitude reading is within about 300 feet of selected altitude, the LO
ALERT lamp goes out and the green ALERT lamp lights.
5. Continue to turn baroset knob for altitude above selected altitude
by about 300 feet. Green lamp goes out, one-second tone is heard,
and amber HI ALERT lamp lights.
6. Continue to turn baroset knob until altitude reading reaches about