Cessna Cardinal RG 1974, Руководство пользователя

Страница: 225 / 226

Cessna Aircraft Company
Model 177RG Supplement No.
DP-014-12
Section 9
Supplements Page 7
Revision 0
SECTION 7
SYSTEMS DESCRIPTION
When the KN 62A is locked to a ground station, range is
displayed to the nearest 0.1 nautical mile from 0 to 99.9
nautical miles and to the nearest 1 nautical mile from 100 to
389 nautical miles. Ground speed is displayed to the nearest
knot from 0 to 999 knots. Time-to-station is displayed to the
nearest minute from 0 to 99 minutes. The display also
indicates 99 minutes for any computed time- to-station greater
than 99 minutes. When the KN 62A is in search mode, dashes
are displayed instead of range, speed, and time-to-station. An
automatic dimming circuit adjusts the brightness of the display
to compensate for changes in ambient light level. The dimming
is controlled by a photocell mounted behind the front panel to
the left of the display. Backlighting of nomenclature on 066-
1068-04 and 066-1088-01 is connected and controlled directly
by aircraft dimming bus.
The audio output of the KN 62A can be set as high as 15
milliwatts into 600 ohms using the audio level adjustment
accessible through the top cover. It is set for approximately
2mW output at the factory. It is desirable to use the audio to
identify the DME ground stations being received.
The effective range of the KN 62A DME depends on many
factors; most important being the altitude of the aircraft. When
the aircraft is on the ground, the KN 62A usually will not
receive DME stations due to line-of-sight signal limitations.
UNCONTROLLED
COPY
WHEN
DONLOADED