Spectrum
®
/Spectrum OR
™
Service Manual 0070-10-0556-02 4 - 25
Calibration Procedure Verification
4.6.11 Leakage Current Tests
1. Plug the line cord of the unit into the safety analyzer. Connect the case ground lead of
the analyzer to the equipotential lug of the monitor on the rear of the monitor.
2. Perform the tests under the following conditions:
a. Case Grounded:
Normal polarity
Normal polarity with open neutral
b. Case ungrounded:
Normal polarity
Normal polarity with open neutral
Reverse polarity
Patient Leakage
1. Lead to ground: Sink Current Patient circuit (Test V Model 431 Dempsey; patient leakage
with line voltage on leads).
2. Connect the ground wire from the safety analyzer to the equipotential lug of the monitor.
3. Connect the ECG cable from the Analyzer to the monitor.
4. On the safety analyzer depress the Apply 115 VAC button and note the reading.
5. Repeat the test for normal and open ground polarity combinations.
Specifications: Verify the current reading of the test is less than 100
µA under normal operating conditions
Less than 300 µA under a single fault condition for
120 VAC and less than 500 µA under a single fault
condition for 230 VAC
Specifications: Verify the current readings of the test are below 50µA
under a single fault condition. (Including 12 Lead for
Spectrum only)
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