GE M
EDICAL
S
YSTEMS
D
IRECTION
2392751-100, R
EVISION
3
V
IVID
™ 4 S
ERVICE
M
ANUAL
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