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4535 612 34161 HD3 Service Manual Page 133
CSIP Level 1 Performance Tests: Electrical Safety
➤ To test transducer leakage current
1. Set the analyzer mode to test ECG leads.
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.
4. Plug the transducer to be tested into the ultrasound system. Connect an ECG lead wire to
the appropriate jack on the analyzer.
5. Fill a test container with enough saline to completely cover the appropriate parts of the
transducer. Insert the exposed end of the ECG lead into the saline, and carefully insert the
transducer. For transthoracic and endocavity transducers, submerge the head and 5 cm (2 in)
of the cable. Be careful not to submerge the connector.
6. Set the analyzer to read leakage current in microamperes.
7. Read the current in both normal and reverse polarity, and record the highest value. Check
that the highest value is within the limit specified for Normal condition in Figure 6-3. (Match
the transducer type symbol on the transducer connector or cable with the symbol in the fig-
ure.)
8. Read the current with an open ground condition imposed, in both normal and reverse polar-
ity. Write down the highest value; this is the value for the first Single Fault condition.
9. Read the current with an open neutral condition imposed, in both normal and reverse polar-
ity. Write down the highest value; this is the value for the second Single Fault condition.