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PRIMUSr 880 Digital Weather Radar System
Step
5
When power is first applied the radar is in WAIT for
approximately 90 seconds to allow the magnetron to
warm up. Power sequences ON- OFF- ON lasting less
than 3 seconds result in a 6- second wait period.
NOTE:
OUTPUT POWER IS RADIATED IN TEST MODE.
6
After the warm- up, select the Test mode and verify
that the test pattern is displayed as shown in figure
4- 1. If the radar is being used with an EFIS, the test
pattern is similar to that shown in figures 4- 2 and 4- 3.
Verify that the yellow antenna position indicator (API)
is shown at the top of the display.
7
Verify that the azimuth marks, target alert (TGT), and
sector scan controls are operational.
PRIMUS
Indicator Test Pattern 120_ Scan (WX),
Normal Operation
4-2
Procedure
If forced standby is incorporated, it is necessary
to exit forced standby.
WARNING
880 Power- Up Procedure
â
Table 4- 1
With TEXT FAULT Enabled
Figure 4- 1
A28- 1146- 102- 00
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