SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
PRIMUS
R
870 Weather Radar
C--12
WEATHER RADAR OPERATING PROCEDURES
Preliminary Control Settings
Place the MODE control, GAIN control, and TILT control, as shown
below, before powering up the aircraft electrical system.
D Mode Control -- Off
D GAIN Control -- Preset Position
D TILT Control -- +15
Precaution s
If the radar system is to be operated in any mode other than standby
while the aircraft is on the ground:
D Direct nose of aircraft so that antenna scan sector is free of large
metallic objects such as hangars or other aircraft, for a distance of
100 feet (30 meters), and tilt antenna fully upwards.
D Do not operate the radar during aircraft refueling or during refueling
operations within 100 feet (30 meters).
D Do not operate the radar if personnel are standing too close to the
270_ forward sector of the aircraft.
D Operating personnel should be familiar with FAA AC 20--68B.
WARNING
OUTPUT POWER IS RADIATED IN TEST MODE.
Powerup
On powerup, select either the standby or test mode. When power is first
applied, the radar is in WAIT mode for 45 seconds to let the magnetron
warm up. Power sequences ON--OFF--ON lasting less than 3 seconds
wait result in a 6--second wait period.
After warm--up, select TEST mode and verify that the test pattern is
displayed.
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