GE b30, Technical Reference Manual

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Planned maintenance
3-21
Document no. 2044677-001
Connect a 5-lead ECG trunk cable without a lead set to the module. Check that the
message ‘Leads off’ is displayed on the screen.
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5. Lead detection
Connect a 5-leadwire set to the trunk cable. Connect all the leads together, for example
to a suitable screwdriver. Check that all the electrodes show ON and the message
‘Asystole’ appears. Check that the Cable type shows 5 lead.
Connect the 5-leadwire set to the simulator. Disconnect one of the leads and check that
the corresponding electrode in the service menu shows OFF within 10 seconds of the
disconnection, and then reconnect the lead. Check the rest of the leads using the same
method.
Connect a 3-leadwire set to the trunk cable. Check that the cable type shows 3 lead in the
service menu. Check that all the electrodes show OFF in the service menu and the
message 'Leads Off' is shown on the screen.
NOTE: The asystole and different leads off messages are shown using certain priority,
Even though one of the leads is disconnected, the related leads off message may not
appear on the screen.
NOTE: When RL electrode is disconnected, the V electrode shows OFF, the measurement
will automatically change to 3 electrode ECG measurement
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6. Test with the patient simulator
Connect the leads to a patient simulator.
Perform the settings and checks with Dynatech Nevada MedSim 300 Patient Simulator:
ECG - BASE - BPM - 160
PACE - WAVE - NSR
Check that a normal ECG waveform is shown, the HR value is 160 (±5) and the ‘Pacer
count’ -value is not increasing in the service menu.
ECG - PACE - WAVE - ASNC
Check that pacemaker spikes are shown on the ECG waveform, the HR value changes to
75 (±5) and the Pacer count value is increasing according to the shown pacemaker spikes.
Set the pacemaker option off:
ECG - PACE - WAVE - NSR
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Respiration measurement
7. RESP measurement recognition
Check that ‘Resp: Avail’ shows ‘1’ and the ‘Meas Off’ shows ‘0’ in the ECG service menu.
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8. Test with patient simulator
Check the respiration measurement with a patient simulator.
The settings and checks with Dynatech Nevada MedSim 300 Patient Simulator:
BASELINE IMPEDANCE -switch - 500
LEAD SELECT-switch - II/RL-LL