GE DRAFT VOLUSON™ P8/VOLUSON™P6
DIRECTION 5775469, R
EVISION 3 DRAFT (JULY 19, 2018) BASIC SERVICE MANUAL
Chapter 10 - Care & Maintenance 10-29
10-8-12 Total Patient leakage current : Type CF probe to ground(Only for Europe)
10-8-12-1 Definition
This test measures the current that would flow to ground from all ECG leads through a patient who is
being scanned and becomes grounded by touching some other grounded surface.
10-8-12-2 Generic Procedure for measurement
Put all ECG leads into saline water and measure leakage current with the ground open and closed, with
power line polarity normal and reversed, and with neutral open and closed. For each combination, ECG
leads must be active simultaneously. Please, refer to "Type CF Patient Leakage Current Test - ECG
Leads" part for detail.
Table 10-30 Typical Data Sheet for Total Patient Leakage Current - Type CF probes to ground
Closed Reversed Closed
!! CAUTION:
Equipment damage possibility. Never switch the Polarity and the status of Neutral when the unit
is powered ON. Be sure to turn the unit power OFF before switching them using the POLARITY
switch and/or the NEUTRAL switch. Otherwise, the unit may be damaged.
Tester Neutral Tester Polarity Switch Ground Switch Measured Leakage Current
Closed Normal Closed
Closed Normal Open
Closed Reversed Closed
Closed Reversed Open
Open Normal Closed
Open Reversed Closed
Tester Neutral Tester Polarity Switch Ground Switch
Measured Leakage
Current
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