
Garmin G1000 Cockpit Reference Guide for the Socata TBM 850
190-00708-00 Rev. A
10-28
SECTION 10 – HAZARD
AVOIDANCE
Weather Attenuated Color Highlight (WATCH™)
While in horizontal scan mode, this feature can be used
as a tool to determine areas of possible inaccuracies in
displayed intensity due to weakening of the radar energy.
This weakening is known as ‘attenuation’. Accuracy of the
displayed intensity of returns located in the shaded areas
are suspect. Proper antenna tilt management should still
be employed to determine the extent of attenuation in a
shaded area.
To activate or deactivate the WATCH™ feature, select
the WATCH Softkey.
Figure 10-44 Horizontal Scan Without WATCH™
Figure 10-45 Horizontal Scan With WATCH™
Areas of Attenuated
Signal
Displayed intensity is
questionable. Potentially
stronger than displayed.
Weather Alert
This feature may be used to indicate the presence of
heavy precipitation beyond the currently displayed range
and 80 to 320 nm from the aircraft’s present position.
Weather Alert targets appear as red bands along the outer
range ring at the approximate azimuth of the detected
returns (Figure 10-46).
If a Weather Alert is detected within ±10° of the aircraft
heading, an alert is displayed on the PFD in the Messages
Window as shown in Figure 10-47.
If the antenna tilt is adjusted too low, a weather alert
can be generated by ground returns. To avoid this issue,
set the display range to less than 80 nm in the terminal
area. Weather alerts can also be deactivated in the terminal
area.
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