Ecg Simulation - HP PageWriter XL M1705B Service Manual

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Figure 4-1. 12-Lead ECG from ECG Simulator.
ECG Simulation
Taking au ECG using a 12-lead ECG simulator allows you to verify
areas of operation that Extended Self-test cannot test:
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the integrity of the patient niodule leadwires
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the accuracy of the paper speed
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the accuracy of the gain settings
The recorded ECG trace should look similar to the one shown
in Figure 4-1, although there will probably be differences in the
trace you record. The trace differences result from differences
in simulators, simulator settings, and, more importantly, from
differences in configuration and control settings on the cardiograph.
To make a recording similar to the one in Figure 4-l:
1. Connect the patient module leadwires to the simulator. Check
the display on the patient module to verify that all leadwires
are connected and sigual quality is adequate. Gently pull each
leadwire taut and look for excessive noise 011 the patient module
display.
2. On an M1700A with preview display, check that all twelve leads
are displayed. The leads will be displayed in groups of three.
4-8 Performance Verification and Maintenance