Preventive Maintenance - HP PageWriter XL M1705B Service Manual

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3. Select a Manual format on the front panel display (preferably 12
lead).
4. Press (Manual) on the cardiograph front panel (or press @ on the
patient module) to start the recording.
When the recording is complete:
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Verify trace activity for all 12 leads. This assures integrity of all {
patient electrodes and leadwires. Noise should measure less than
1 mm, and there should be no baseline wander.
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Verify no gross distortion of complexes or calibration pulses (no
overshoot, etc.).
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Verify that calibration pulses are of proper duration. This assures
the correct paper speed. With the cardiograph set to record at
25 mm/set, the calibration pulse should measure 5 mm (calibration
pulse duration is 200 ms).
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Verify that calibration pulse amplitude is correct. This assures
the correct gain. With the cardiograph gain set at 10 mm/mV,
the calibration pulse should measure 10 mm (calibration pulse
amplitude is 1 mV).
An arrhythmia simulator is not an acceptable tool for verifying
computerized ECG analysis. The analysis software is biased to
process human ECG data.
SAECG verification should not be required in addition to standard
ECG simulation. However, you can use an ECG simulator to
determine that the SAECG is functional. All leadwires should be
connected to the simulator (though you do not need to connect
specific leadwires to specific outputs). See Appendix B for more
information.
Preventive
Maintenance
Routine maintenance for the cardiograph consists mainly of cleaning
and inspection.
Caution
The cardiograph does not require any kind of lubrication.
Lubricating any part of the cardiograph could damage it or diminish
its performance.
Performance Verification and Maintenance 4-9