User's Manual

Chapter 2 – Controls & Indicators
SKY899 Pilot’s Guide
2-5
Preliminary
for Stormscope
represents an intruder aircraft that does not generate a
TA, but which is within a horizontal range of 4 nmi and
a relative altitude of ±
1200 ft.
Own Aircraft This symbol represents your aircraft’s
relative position and heading.
Off-Screen Traffic Advisory (TA) This symbol
represents a
TA that has been detected beyond the
current display range. The symbol is displayed at a
position along the outer range ring that indicates the
relative bearing of the intruder aircraft.
Range Rings The outer range ring represents
a distance of
15, 6, or 2 nmi from your aircraft
corresponding to the selected display range as
indicated in the display range indicator. The
inner range ring on the
15 nmi range represents
a distance of
6 nmi. The inner range ring on the
6 nmi range represents a distance of 2 nmi.
There is no inner range ring on the
2 nmi range.
Standby Indicator This indicator is
displayed as long as the
SKY899 is in standby
except when the test screen is displayed during
an operator-initiated self test. In standby, the
SKY899 does not interrogate, process, or display
traffic.
Operate Lamp (optional, not supplied) This
panel-mounted indicator light is lit whenever the
SKY899
is sending out interrogations. The light is not lit in
standby or when the unit is in failed mode.
Controls Required for the
Stormscope
Option
SKYWATCH/
Stormscope
Mode Switch (not supplied)
This panel-mounted toggle switch determines whether traffic
information or thunderstorm information is displayed.
The
SKY899 and the WX-1000 continue tracking even if the
switch is in the other position. If the
SKY899 detects a TA or
generates an error message when the switch is in the
Stormscope
position, the display switches to the traffic screen to display the
TA or the error message.
Standby
SKY899