41
Vs: 20Vpp, R: 1 k ohm, Oscilloscope: 1 m sec./div., 2 V/div.
Figure 7.4 Resonant characteristics of normal and defective transducer "Type 50B-12"
The section 7.4 shows sample waveforms of normal transducers.
The waveforms shown in right side are measured in water (depth is 2 m, more or less), and the
waveforms shown in left side are measured in air.
As mentioned above, the waveforms are differ with the measuring condition, therefore, the
recommendable way to check the transducer is to compare the waveforms between normal and
doubtful transducers by the same test instruments and measuring conditions at once.
Normal Transducer
Defective Transducer (Example 1)
Defective Transducer(Example 3)
Defective Transducer(Example 2)
Summary of Contents for FCV-1200L
Page 1: ...COLOR LCD SOUNDER FCV 1200L 1200LM Back ...
Page 14: ...11 Figure 3 4 Block diagram of PWR board 02P6270 ...
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