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600840-000031 Stratus ES/ESG Installation Instructions
Rev. 2.2
Last Revised: February 20, 2018
Page 41 of 45
Transponder is not receiving the
squat switch position
1. Check the connections and the pin-out of the
transponder to verify that the squat switch port is
correctly connected.
2. Verify that the squat switch works independent of
the transponder.
The power key does not power on
Stratus ES/ESG
1. Verify that the power key is not stuck.
2. Verify that the circuit breaker has not tripped.
If it has tripped
: Reset the circuit breaker switch
and try the power key again.
NOTE
: If the circuit breaker opens it may be reset
only once.
If it did not trip
: Verify that the electrical
connection to the transponder is secure. Verify that
the voltage at the input to the unit is between 11
VDC and 36 VDC.
The altitude displayed is incorrect
1. Enter into configuration mode on Stratus ES/ESG
and verify that the altitude source is set as the
currently used altitude source. If the altitude source
is a serial connection, verify that the correct
encoding option was selected.
2. Verify that the correct connections are made to the
transponder.
3. Use an altitude simulator to verify the cabling.
4. Verify that there is not a problem with the altitude
source.
The screen displays a “transmitter
failure” error message
This message appears when one of the following
issues occurs: improper impedance between antenna
and transponder, improper connection on connectors,
improper seating of transponder into tray.
1. Verify that the transponder is completely seated in
the rack. Ensure back plate has been properly
installed to rack.
2. Verify that the transponder antenna is connected to
the port labeled XPNDR ANT and that the GPS
antenna is connected to the port labeled GPS
(Stratus ESG only).
3. Check all connectors to ensure they are properly
mated. Check these connectors for opens or
shorts.
4. Verify that the maximum loss from the transponder
connector to the antenna connector is 2 db.
5. Inspect the transponder antenna to ensure
functionality and adherence to requirements
identified in the transponder antenna section.
6. Inspect wiring to ensure cabling integrity.