System
Setup
Transducer Alignment
The transducer alignment may require alteration as the transducer serviced or when a
replacement transducer is installed.
Tsh
Transducer Shield
OFF
Stainless Steel transducer shield removed or
60/90 kHz ABS shield installed.
ON
Stainless Steel shield installed.
Note that if the transducer shield is removed or replaced the Frequency Adjust
(below)
calibration must be confirmed.
While stationary in port, switch to OMNI mode and adjust the Range, Gain, Near Gain and
Far Gain controls
(on the Operate panel)
to obtain a stable target on the display of
medium strength. Choose a fixed position target such as the shoreline or a standing
vessel.
Switch to the System Panel and vary the Frequency Adjust to ensure maximum
target
strength.
DO NOT
attempt to adjust the Frequency while the vessel is underway.
47
FQ
Frequency Adjust
Tuning the transducer is similar to checking the resonance of bell or tuning
fork.
Resonance can vary from transducer to transducer and can change slightly
as the
transducer ages. The transducer frequency must be tuned for maximum
performance.
Summary of Contents for 22KHz
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