TROUBLESHOOTING
GENERAL
There are a few adjustments for echo processing and they should be used judiciously.
Transducer location and aiming are the most important factors affecting the
reliability of the MultiRanger Plus
. Location and aiming of the transducer may be
optimized by pressing to view the confidence level while in the RUN mode. In
the PROGRAM mode, the same can be achieved by observing the echo confidence,
P-80 and pressing .
OSCILLOSCOPE
An oscilloscope can be used to view the transmit, receive and processed echo signals.
Connect as follows:
oscilloscope location description
probe J1,RCVR,board A amplified receiver signal
J2,SCOPE,board A processed echo
TB1-8,board B raw transmit/receive signal
external trigger J3,SYNC,board A oscilloscope synchronization
ground J4,COM,board A ground
The transmit and receive signals are best viewed while in the run mode or with P-94,
transmitter test, set to fire automatically in the program mode. This may be useful
when aiming the transducer to obtain the best echo.
To view the processed echo, P-79 must be set for the desired display. If the
PROGRAM mode is exited for more than 10 minutes, P-79 will have to be reset to
view the displays on the oscilloscope.
The processed echo can be viewed and updated by pressing . This must be
done while in the program mode, but can be done while viewing any parameter. For
example, echo analysis parameters 79 - 84 or echo processing parameters 85 - 87
can be viewed or changed while monitoring results on both the MultiRanger Plus
display and on the oscilloscope.
8
MEAS
MEAS
PL-443 8 – 1
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