User's Manual

M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 55
Theory of Operation: Transducer Safety Testing: Test Setup and Theory
Figure 4-5 Transducer Leakage Current Test Diagram for the Normal Condition
The leakage current normally flows from the chassis safely out through the ground wire. If there
is a fault in the transducer insulation, some of the current follows this path and is measured by
the safety analyzer. This I
transducer
is still fairly low, unless the chassis is not properly grounded.
A
I
7ASW030-2
Hot
Neutral
Ground
I
C
I
I
measured
system
chassis
transducer
S
Z