A28-1146-102-00
Normal Operation
4-2
Step Procedure
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-ONlasting less
than 3 seconds result in a 6-second wait period.
NOTE: If forced standby is incorporated, it is necessary
to exit forced standby.
WARNING
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
â
880 Power-Up Procedure
Table 4-1
Indicator Test Pattern 120_ Scan (WX),
With TEXT FAULT Enabled
Figure 4-1
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