Philips M2540 - page 52

M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 52
Theory of Operation: Transducer Safety Testing: Test Setup and Theory
Transducer
Safety Testing:
Test Setup
and Theory
This section provides background and supporting information for the transducer leakage tests in
Section 6, “Performance Tests”; this information is not required to perform the tests.
In transducer safety tests, a container filled with saline solution functions as a conductive
medium (see Figure 4-4 on page 53). The solution penetrates any faults in the transducer
insulation and provides an electrical path between the submerged lead wire and the grounded
inner transducer shield.
The test for transthoracic and endocavity transducers differs from the test for TEE transducers
only by the extent that the transducers are submerged in the test solution.