PRIMUSr 880 Digital Weather Radar System
Selecting target alert forces the system to preset gain. Target alert can only be selected in the WX and FP modes.
In order to activate target alert, the target must have the depth and range characteristics described in table 3- 4:
Selected Range | Minimum Target | Target Range |
(NM) | Depth (NM) | (NM) |
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5 | 5 | 5- 55 |
10 | 5 | 10- 60 |
25 | 5 | 25- 75 |
50 | 5 | 50- 100 |
100 | 5 | 100- 150 |
200 | 5 | 200- 250 |
300 | N/A | N/A |
FP (Flight Plan) | 5 | 5- 55 |
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WC- 880 Controller Target Alert Characteristics
Table 3- 4
5 STB (Stabilization)
The STB button turns the pitch and roll stability ON and OFF. It is also used with the STB adjust mode and to override forced standby.
NOTE: Some controllers annunciate OFF when stabilization is OFF.
6 TRB (Turbulence Detection)
TRB is a switch used to select the turbulence detection mode of operation. The TRB mode can only be selected if the FUNCTION switch is in the WX or RCT positions and the selected range is 50 miles or less. The weather/turbulence mode is annunciated in the mode field with the WX/T legend. Areas of at least moderate turbulence are shown in soft white. The turbulence threshold is five meters per second.
A28- 1146- 102- 00 | Operating Controls |
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