1-25 TM106601_(7/01)
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C
O M M A N D
S
Y S T E M S
D
I V I S I O N
1.6.4.5 Stabilization (STAB OFF) Control Procedure
(a) Pull the TILT Control knob out to turn off the antenna stabilization off.
(b) Observe that the words STAB OFF appear on the display.
Note
+
The antenna is not stabilized in the horizontal
plane, and will cause the display to vary with
aircraft attitude.
(c) Push the TILT Control knob in to restore antenna stabilization.
(d) Observe that the words STAB OFF disappear from the display.
Note
+
The STAB OFF function is normally not used.
It is employed only when the antenna
stabilization system or gyro fails, or is
suspected of failure.
1.6.4.6 TEST Pattern Selection Procedure
(a) Initially, turn Function Select Switch from OFF to TEST position.
(b) Check the display. The test pattern should appear approximately 100 seconds after the Function
Select Switch was rotated from the OFF position to the TEST position. The exact point of test
pattern termination or range duration of each color is not important. The presence of three
distinct colors, in proper order, is important. See the RDR-1600 Pilot’s Guide for the pattern
that will appear in the-80-mile range.
1.6.4.7 60° Scan Selection Procedure
(a) To change the display from 120
°
to a 60
°
scan, turn Function Select Switch from ON to 60
°
.
(b) Observe that the antenna now scans only 60
°
and the display indicates a 60
°
sector scan.
(c) To return the system to the 120
°
scan, turn Function Select Switch from 60
°
to ON.
Note
+
If the antenna BORESIGHT signal is not
being received by the RT-1601, the fault ANT
FAIL will appear in the display’s fault field.
