Install Manual

Preliminary
SKY899
Installation Manual
4-14
Rev. A
The Mag Heading Data Monitor screen displays the following:
BRT
OFF
EXIT
NEXT
SEL
PREV
Magnetic Heading
Synchro Compass
AHRS
*None*
The Rad Alt Data Monitor screen displays the following:
BRT
OFF
(Bonzer Mark 10X)
Sense: Active Low
Validity: Valid
Altitude: 39 ft
EXIT
Validity: Valid
Altitude: 4005 ft
Data Monitor
Rad Alt
(Arinc 429)
If DC Analog Radio
Altimeter was selected in
equipment menu the
following data monitor
will appear:
4.4.3 Calibration
NOTE
Ensure transponder is in standby while doing calibration.
Each time the TRC, directional antenna, or any of the directional antenna cables (including connectors)
have been repaired or replaced the TRC must be calibrated. Calibration is accessed from the Service Menu
(i.e., press SEL with Calibration highlighted). The calibration screen shows the current calibration value of
each antenna. Since only one antenna location (top or bottom) can be used the antenna location not
configured will have an invalid bit phase message.
NOTE
If the TRC has never been calibrated, the current calibration value will be displayed as 999.
The Calibration menu provides the following choices:
BRT
OFF
EXIT
NEXT
EXIT
NEXT
SEL
PREV
SEL
PREV
Calibration
Bit Phase: 131.10 degs
Bottom Antenna
Bit Phase: Invalid
Top Antenna
The message SKY899
Antenna Calibration in
Process... will be displayed
while calibration is being
performed.
After a successful
calibration, the new Bit
Phase value will be
displayed.