GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
10-26 Section 10-3 - Periodic Maintenance Schedule
10-7-8-1 Data Sheet for ECG Current Leakage
The test passes when all readings measure less than the values shown in the tables below. Record all
data on the Vivid™ 4 Preventative Maintenance Inspection Certificate (see page 10-31).
Table 10-18 Maximum Allowance Limit for ECG Lead Leakage Test to Ground
AC Power
Source
Maximum
Allowance Limit
GROUND
OPEN
GROUND
CLOSED
Patient Lead-to-Ground Current Leakage Test
and
Patient Lead-to-Lead Current Leakage Test
115V 10uA 10uA
220/240V 500uA 10uA
Table 10-19 Maximum Allowance Limit for ECG Lead Isolation Sink Test
AC Power
Source
Maximum
Allowance Limit
Patient Lead Isolation Current Test
115V 20uA
220/240V 5mA
Table 10-20 Typical Data Sheet for ECG Lead-to-Lead Test
ECG
Power
Tester
Polarity
Switch
Tester
Ground
Switch
Tester Lead Selector
RL
(N)
RA
(R)
LA
(L) LL C
ON NORM CLOSED
ON REVERSE CLOSED
ON NORM OPEN
ON REVERSE OPEN
OFF NORM CLOSED
OFF REVERSE CLOSED
OFF NORM OPEN
OFF REVERSE OPEN
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