SkyView
HDX System
General Maintenance Manual, Revision F
Page | 67
7.9
SV-XPNDR-261 Transponder
The Transponder includes limited self-diagnostic capability.
7.9.1
Transponder Warnings (Transponder Self Diagnostics)
If a fault with the Transponder is detected, a system message will be displayed on the SkyView
HDX Display: XPNDR WARNING MESSAGE. To see detailed information on the fault, go to
SETUP MENU > TRANSPONDER SETUP. The words TRANSPONDER WARNING will be
displayed in Yellow. Right-click the knob and see the specific warning.
The following table provides a recommendation for each specific warning.
Table 9: Transponder Self Diagnostic Messages
ANNUNCIATION
DESCRIPTION
POSSIBLE CAUSES
ANT FAULT (value)
Antenna Fault; value is Power output.
Generally, this is an installation issue
with antenna, feedline, or the connector.
Check the antenna, feedline, or
connector. A visual inspection is often
not enough to find the fault with the
antenna, feedline, or connector.
NO ADSB POSITION
GPS data is not being received by
transponder.
Check connection to GPS receiver or
transponder configuration.
DPSK UNLOCK
Internal diagnostic warning.
Internal fault, contact Dynon technical
support to arrange for repair or
replacement.
REMOTE HOT (value)
Transponder is receiving excessive
heat; value is Temperature (°C).
Check location of transponder for
exposure to excessive heat.
RX PSU FAIL
Internal diagnostic warning.
Internal fault, contact Dynon technical
support to arrange for repair or
replacement.
SQUITTER FAIL
Extended Squitter data not transmitted.
Internal fault, contact Dynon technical
support to arrange for repair or
replacement.
TX POWER LOW (value)
Transmit power output is low; value is
Power output.
Generally, this is an installation issue
with antenna, feedline, or the connector.
Check the antenna, feedline, or
connector. A visual inspection is often
not enough to find the fault with the
antenna, feedline, or connector.
TX PSU HIGH (value)
Transmitter power supply output is
abnormally high; value is Volts.
Internal fault, contact Dynon technical
support to arrange for repair or
replacement.
TX PSU LOW (value)
Transmitter power supply output is
abnormally low; value is Volts.
Check power being supplied to
|SV-XPNDR-261.
TX RESTART
Internal diagnostic warning
Remove and re-apply power to
transponder.
TXPNDR FAULT
Generic fault message
Internal fault, contact Dynon technical
support to arrange for repair or
replacement.
