B30 Patient Monitor
4-14
Document no. 2044677-001
3.3 ECG
Problem Cause What to do
HR numerical display
shows ‘---’
No heart rate available. If no ECG waveform, check LEADS OFF
message and connect the leads.
If ECG waveform exists, check heart rate
source e.g. in the ECG Setup menu behind
ECG key.
Unacceptable ECG
waveform
Poor electrode or poor electrode skin
contact.
Electrodes from different manufacturers
are used. /Too much/little gel is used.
Poor electrode condition. Electrodes are dried out.
Improper site of electrodes. Check that electrodes are not placed over
bones, active muscles, or layers of fat.
Improper skin preparation. Remove body hair. Clean attachment site
carefully with alcohol.
Improper bandwidth filter. Check filter.
Faulty/ dirty ECG cable. Change new cable.
No ECG trace Waveform not selected on screen.
Press the
Monitor Setup key and make
adjustments.
Module not plugged in correctly. Plug in.
Noise-message High frequency or 50/60 Hz noise. Isolate noise source.
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