Philips M3500B manual Rfi

Troubleshooting

Table 4-5 Troubleshooting Tips (Continued)

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		trodes are outdated or		Check the date code on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

4-8 Monitoring the ECG