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Accessory Testing
98 Chapter 9 Preventive Maintenance, Care and Cleaning
Testing
Ultrasound
Transducers
Visual check Ensure that there are no cracks in the transducer dome, cable or connector plug.
Electrical check 1. Switch on the monitor and the recorder.
2. Connect the transducer to the US socket. When you connect the transducer:
The --- display goes out.
US, time, date and paper speed are printed on the paper.
The Signal Quality Indicator is red.
3. Turn the loudspeaker volume up to an audible level.
4. Holding the transducer in one hand, move your other hand repeatedly towards and
then away from the surface.
Figure 9-2 Testing an Ultrasound Transducer
Check that a noise is heard from the loudspeaker.
5. The transducer contains seven piezo-electric crystals.
Figure 9-3 Position of Crystals in an Ultrasound Transducer