Chapter 2 – Controls & Indicators
SKY899 Pilot’s Guide
2-6
Preliminary
Alternate Display & Aural Announcements
WX-1000 Maintenance Switch
(not supplied)
This
remote toggle switch (normally installed in the avionics bay
near the
WX-1000
processor) has a
N
ormal position and an
O
verride (
WX-1000
maintenance) position. It should only be
moved to the
O
verride position when the
WX-1000
processor is
removed or powered down at the circuit breaker, and you still
want to use the
SKY899
.
Controls & Indicators for an Alternate Display
Control Panel
(not supplied)
A discrete control panel pro-
vides the functions normally provided by the buttons and knob
on the
WX-1000/SKY497
display. These functions include
controlling power to the
SKY899
, selecting the display range,
selecting the vertical display mode, selecting the operating
mode, and starting the self test.
Vertical Display Mode Indicator Lamps
(not supplied)
Some alternate displays do not display a vertical display mode
indicator on-screen. For those displays, two discrete indicator
lamps similar to those shown in figure
2-3
indicate the current
vertical display mode.
Aural Announcements
“Traffic, Traffic”
This aural component of a traffic advisory
is announced once over the cockpit speakers or headset when a
TA
is first detected.
“SKYWATCH System Test Passed”
This message is
announced once over the cockpit speakers or headset after the
SKY899
has passed an operator-initiated self test.
“SKYWATCH System Test Failed”
This message is
announced once over the cockpit speakers or headset after the
SKY899
has failed an operator-initiated self test.
Figure 2-3. Vertical Display Mode Indicator Lamps
