Testing Transducers
7 Troubleshooting
73
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The ultrasound transducer contains seven piezoelectric crystals. Basic functioning of each can be verified
by holding a flat bottomed pencil or similar above each crystal and moving it up and down as shown.
Figure 4 Testing an Ultrasound Transducer Using a Pencil
A sound should be heard for each crystal tested. The pencil should be held two to three centimeters from
the transducer surface when the test is carried out.
Figure 5 Position of Crystals in an Ultrasound Transducer
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A sound should also be heard when the transducer is moved back and forth over a solid surface, or the
hand as shown below.
Figure 6 Checking an Ultrasound Transducer
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Crystals
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Summary of Contents for Avalon CTS M2720A
Page 2: ...ii ...
Page 32: ...3 System Interfaces Compatible Fetal Monitors 26 ...
Page 66: ...6 Preventive Maintenance and Safety Battery Exchange 60 ...
Page 92: ...9 Upgrades 86 ...
Page 102: ...10 Specifications Essential Performance 96 ...
Page 104: ...A Removing and Replacing the Transducer Battery 98 Wipe off excess silicone grease ...
Page 108: ...C Avalon CTS Frequency Table 102 ...