BendixKing KPA 900 System RDR-2000 - Manual (Page 44)

BENDIX/KING® KPA 900
Page 4-2
Revision 2
©Honeywell International Inc. Do not print without express permission of Honeywell.
Dec/2007
4.1.7 DESIRED ANTENNA SWEEP
The Desired Antenna Sweep limits the radial angles of the weather data to the display
units. The antenna sweeps completely to the limit, but only the data accumulated to the
Desired Antenna Sweep option is displayed. Scan time is not reduced, and scan
interference is not corrected with this parameter. It may be useful to decrease the desired
sweep when non-Honeywell displays are interfaced, or in installations where there is a
problem with false reflections at the periphery.
4.1.8 WX GAIN (ART 2100 ONLY)
In the weather mode, the ART receiver gain can be adjusted when the Wx Gain is
enabled. Wx gain adjustments can give more data about storm intensity if it is determined
that a cell is just over a color threshold or is near the next color threshold. Wx Gain is used
to make the determination of the proximity to the threshold. This option allows operation
of the WxR in an uncalibrated mode. Do not enable the Wx Gain option, unless the display
unit annunciates the uncalibrated condition.
4.1.9 MAP GAIN
In the map mode, the ART receiver gain can be adjusted when the Map Gain is enabled.
Map gain adjustments can give more data about the ground reflection by shifting the
thresholds to sharpen the edges of the gradients. The map mode is not a calibrated
display. Thus, the absolute colors are insignificant in terms of the reflective surface.
Surfaces of varying reflectivity can be effectively separated by an adjustment of the gain.
4.1.10 EFIS STRUT SWITCH
The EFIS Strut Switch (WOW) inhibits the transmitter when the aircraft is on the ground.
This is a safety feature designed to protect ground personnel and to prevent possible
damage to the ART. The Strut Switch Override allows the ART to ignore a transmitter
inhibit one time for testing purposes. This option is set with the EFIS configuration menu
and is also available with the KPA 900.
4.1.11 ARL (ART 2100 ONLY)
When enabled and selected, the ARL feature determines when the losses due to
intervening weather are too great to accurately display the weather. This occurs when the
ART does not have sufficient strength to penetrate a storm cell due to losses in the
intervening weather. Areas behind the storm that are not monitored show as blue to warn
the operator of potentially dangerous conditions.