Garmin G1000 King Air C90GT - Manual (Page 351)

190-00663-01 Rev. A Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT 337
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
W
eather
a
ttenUateD
c
olor
h
ighlight
(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. The
radar energy weakens as it passes through areas of intense precipitation, large areas of lesser precipitation,
and distance. Issues with the radome also attenuates the radar energy. All these factors have an effect on the
return intensity. The more energy that dissipates, the lesser the displayed intensity of the return. Accuracy
of the displayed intensity of returns located in the shaded areas are suspect. Make maneuvering decisions
with this information in mind. 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.
Horizontal Scan With WATCH™ Horizontal Scan Without WATCH™
Areas of
Attenuated Signal
Displayed intensity is questionable.
Potentially stronger than displayed.
Figure 6-61 Horizontal Scan Without and With WATCH™