Revision D
MAC
1200 resting ECG analysis system
7-9
2012250-095
Service and Maintenance: Technical Inspections/Preventative Maintenance
Enclosure Leakage Current Test
This test is performed to measure leakage current from chassis to ground during
normal condition (N.C.) and single fault conditions (S.F.C.).
In all cases, the leakage current is measured from any exposed conductive parts to
ground, the unit being tested has to be switched on and off.
Connect the unit being tested to your safety tester.
During normal condition (N.C.), measurements have to be done under the
following conditions (refer to the electrical diagram):
Polarity switch
Norm and RVS
GND switch
GND closed
S1
closed and open
During single fault conditions (S.F.C.), measurements have to be done under the
following conditions (refer to the electrical diagram).
Polarity switch
NORM and RVS
GND switch
GND open
S1
closed
The test has failed if the measured values are greater than the following:
N.C. S.F.C
100 µA
500 µA
300 µA (UL requirements)
Electrical Diagram for Enclosure Leakage Current Test
Patient Leakage Current Test
This test performs a leakage current test under single fault conditions (S.F.C.)
depending on domestic power outlet of 115 or 230 V AC as source into the floating
inputs.
In all cases, the leakage current is measured from input jack of the unit being tested
to ground.
Connect the unit being tested to your Safety Tester.
Referring to the electrical diagram, the measurements have to be done under the
following conditions.
Polarity switch
NORM and RVS
GND switch
GND closed
S1
closed
021A
Safety Tester
[M]
GND
Power Cord
Probe to
Exposed
Chassis
NORM/RVS
High
GND
Low
Uni
t Und
e
r
T
e
st
Power Cord
Summary of Contents for MAC 1200
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Page 11: ...Revision D MAC 1200 resting ECG analysis system 1 1 2012250 095 1 The Basics ...
Page 12: ...1 2 MAC 1200 resting ECG analysis system Revision D 2012250 095 For your notes ...
Page 19: ...Revision D MAC 1200 resting ECG analysis system 2 1 2012250 095 2 Functional Description ...
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Page 45: ...Revision D MAC 1200 resting ECG analysis system 3 1 2012250 095 3 System Test Function ...
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Page 69: ...Revision D MAC 1200 resting ECG analysis system 4 1 2012250 095 4 Repair Instructions ...
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Page 79: ...Revision D MAC 1200 resting ECG analysis system 5 1 2012250 095 5 Troubleshooting ...
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Page 85: ...Revision D MAC 1200 resting ECG analysis system 6 1 2012250 095 6 Adjustment Instructions ...
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Page 89: ...Revision D MAC 1200 resting ECG analysis system 7 1 2012250 095 7 Service and Maintenance ...
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Page 101: ...Revision D MAC 1200 resting ECG analysis system 8 1 2012250 095 8 Parts List ...
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Page 111: ...Revision D MAC 1200 resting ECG analysis system 9 1 2012250 095 9 Specifications ...
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Page 123: ...Revision D MAC 1200 resting ECG analysis system 10 1 2012250 095 10 Drawings ...
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