Test 1: Leakage Current Test with Mains Voltage Applied (Source) for Intraoperative Transducers
Key to Source Test Diagram
C
Stray capacitance from the ultrasound system power wiring to the system
grounded metal chassis (1 to 3 MΩ reactance)
Z
Impedance between the metal parts of the transducer and a test electrode placed
in the bucket of saline solution (about 850 kΩ with an intact outer insulating layer,
500 Ω with a hole in the layer)
A
Microammeter to measure leakage current from the transducer to the earth lift
ground through Z to the test electrode
e
Line power source, either 110 Vac or 220 Vac
I
Current caused by e and stray capacitance, and optionally Z
S1
Open earth lift ground switch
S2
Line polarity switch
Intraoperative Transducers
Leakage Current Testing for Intraoperative Transducers
194
EPIQ 7 User Manual 4535 617 25341
Содержание epiq 7
Страница 4: ...4 EPIQ 7 User Manual 4535 617 25341 ...
Страница 26: ...Read This First Recycling Reuse and Disposal 26 EPIQ 7 User Manual 4535 617 25341 ...
Страница 94: ...DVD RW Drive System Overview System Components 94 EPIQ 7 User Manual 4535 617 25341 ...
Страница 100: ...Brake Steering Lock Pedal System Overview System Components 100 EPIQ 7 User Manual 4535 617 25341 ...
Страница 154: ...Customizing the System Custom Procedures 154 EPIQ 7 User Manual 4535 617 25341 ...
Страница 172: ...Performing an Exam Ending an Exam 172 EPIQ 7 User Manual 4535 617 25341 ...
Страница 198: ...Intraoperative Transducers Leakage Current Testing for Intraoperative Transducers 198 EPIQ 7 User Manual 4535 617 25341 ...
Страница 244: ...Endocavity Transducers Biopsy with Endocavity Transducers 244 EPIQ 7 User Manual 4535 617 25341 ...
Страница 298: ...System Maintenance For Assistance 298 EPIQ 7 User Manual 4535 617 25341 ...