User's Manual
Troubleshooting
4-8 Monitoring the ECG
Poor ECG signal 
quality
The monitoring elec-
trodes are not making 
proper contact with the 
patient.
The monitoring elec-
trodes are outdated or 
dried-out.
Radio frequency inter-
ference (RFI) is causing 
artifact.
Check that the monitoring 
electrodes are properly 
applied. If necessary, pre-
pare the patient’s skin and 
apply new electrodes.
Check the date code on 
the electrodes. Do not 
open the electrode pack-
age until immediately 
prior to use.
Relocate or turn off equip-
ment that may be causing 
RFI.
QRS beeper inau-
dible or beeps do 
not occur with 
each QRS com-
plex.
The QRS beeper is con-
figured to Off.
The amplitude of the 
QRS complex is too 
small to detect.
Check that the QRS 
beeper is configured to 
On.
Adjust the volume.
Adjust the size of the 
ECG.
Table 4-5 Troubleshooting Tips (Continued)
Situation Cause Solution










