connection has been opened, do not touch the chassis or the patient cable during
the test.
This test checks leakage current with mains voltage applied. For a diagram of
this test, Test 2, see "Leakage Current Testing for Intraoperative Transducers"
on page 217.
1. Plug the safety analyzer into the power source.
2. Plug the ultrasound system into the safety analyzer.
3. Connect the transducer being tested to the ultrasound system.
4. Immerse 5 cm (2 in) of the transducer in saline solution.
5. Set the safety analyzer Mode switch to the ECG position.
6. Set the safety analyzer Leads switch to the Isolation Test position.
7. Connect a lead to any ECG terminal on the safety analyzer. Leave the other
end of the lead disconnected for now.
8. Press and hold the Isolation Test button and note the leakage reading. This
is the correction factor that will be subtracted from the final reading.
9. Immerse the other end of the lead into the saline solution.
10. Press and hold the Isolation Test button and take the leakage reading again.
11. Subtract the correction factor found in step 8 to get the accurate leakage
measurement. The leakage must be less than 50 µA RMS.
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iU22 User Manual
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9
Intraoperative Transducers
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