Performance Verification Tests
2-44 Performance Verification and Safety Tests
Patient Lead Leakage
Leakage out of (Source) or into (Sink) patient-connected inputs (Applied
Parts).
1. ECG leads (IEC Type CF)
1. Source
a. Normal Condition (both AC line connections and earth
ground intact)
Should be <
10 uA.
Record as “cc”.
b. Single Fault Condition (separately open neutral and open
earth, each in turn)
Should be <
50 uA.
Record as “dd”.
2. Sink
a. Single Fault Condition is with AC Mains voltage on Applied
Parts
(both AC line connections and earth ground intact)
Should be <
50 uA.
Record as “ee”.
b. Normal Condition (unit plugged into AC Mains and in
Standby mode)
Should be <
10 uA
(measured between all leads and earth)
3. Auxiliary (each lead to every other lead) (record worst case
value)
a. Normal Condition (both AC line connections and earth
ground intact)
Should be <
10 uA.
Record as “ff”.
b. Single Fault Condition (separately open neutral and open
earth, each in turn)
Should be <
50 uA.
Record as “gg”.
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