User Manual for the Type 8300 Compatt 6
(and Variants)
UM-8300-Compatt 6
Issue B3
Section 11 – Fault Diagnosis
11.1 Introduction
The following section assists in diagnosis when the transponder fails to operate correctly. Each
section identifies a fault, the possible cause and the recommended action to rectify the fault.
11.2 Fault Types
Fault
Possible Cause
Action
Transponder does not
reply to interrogation
or commands.
Transducer or transceiver
connections not made or
loose.
Check all connections on the surface transducer or
transceiver.
Incorrect transponder
address set in the surface
transceiver.
Check address and repeat with the correct address.
Operating at long range.
Increase power to the surface transceiver.
Ray-bending effects
stopping the transponder
from receiving.
Use software application RAY_TRACE available from
Sonardyne Int Ltd.
Surface thermocline
refracting reply signals.
Lower transducer below thermocline.
Noise level as surface
transducer too high.
Lower the dunking transducer/transceiver or towfish and
reduce the surface transceiver gain settings.
Do a noise check using the applicable transceiver noise
check command.
Increase the transponder power level using the Navigation
Power Level (NPL) in the Configuration Status (CS)
Command.
Transponder has low
battery power.
Check log for battery output before deployment.
Check battery levels since deployment.
Surface currents maybe
streaming the transducer
away from transponder
location.
Add 20 kg of ballast on a 1 m strop from the transducer
guard.
Other acoustic systems
maybe operating in the
same frequency band.
Check the signals for validating by using the noise
command on the surface transceiver.
Section 11 – Fault Diagnosis
84