4535 612 10261 HD11 Service Manual Page 158
CSIP Level 1 Performance Tests: Electrical Safety Tests
Transducer Isolation Leakage Current Test Procedure
➤ To test transducer isolation leakage current
1. Set the analyzer to test ECG.
2. Plug the analyzer into an available AC wall outlet. Plug the ultrasound system power plug into
the test receptacle on the analyzer.
3. Turn on the ultrasound system by starting its internal PC.
4. Plug the transducer to be tested into the ultrasound system.
5. Fill a test container with enough saline to completely cover the appropriate parts of the
transducer.
6. Insert the exposed end of the ECG lead wire into the saline, and then carefully insert the
transducer:
- For transthoracic and endocavity transducers, submerge the head and 5 cm (1.96 in) of
the cable. Be careful not to submerge the connector.
- For TEE transducers, submerge all of the flexible shaft that would normally enter the
body of the patient: 100 cm (39.3 in) for adult TEE, 60 cm (23.6 in) for pediatric TEE.
CAUTION When submerging a TEE transducer, be careful to not submerge its control handle or allow
saline to contact its control handle. Liquid inside the control handle causes corrosion and failure.
7. Measure the isolation leakage current of the transducer. Record the value, and check that it
is within the limit specified in Figure 6-6 on page 157.
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