Philips IntelliVue TRx Instructions For Use Manual page 115

Problem
Dropouts
Signal Strength
Radio
Frequency
Interference
disassociation/reassociation with the Information Center, events in the Clinical
Review application can reflect loss of data for up to 1 minute in the worst case.
Cause
Low signal strength
RF interference
The IntelliVue Telemetry System is custom designed for your site, so reliable
signal reception is only possible where there are receiving access points. When
the signal is too low, the following technical alarms can occur:
• "Cannot analyze ECG"
• "Cannot analyze ST
• " Tele Weak signal"
• "No signal"
Corrective Action
1. Check the location of the patient. If the patient is out of range, return the
patient to the specified coverage area.
2. If the patient is intentionally out of the coverage area, put telemetry in
Standby Mode. See "Standby Mode" on page 4-4.
3. If the patient is in the coverage area and is stationary, try moving the
transceiver about 15 cm (6 inches).
4. Check for INOP and information signals at the Information Center.
5. Check for interference activity in other sectors at the Information Center
to see if the problem is occurring with other transceivers.
6. If the problem is persistent, call service.
Radio frequency (RF) interference is caused by monitoring devices from other
manufacturers that intrude into the transmitted electrical signal. You are
probably familiar with electrical interference in our homes and cars when it
causes signal loss or static with cell phones. This same type of interference can
occur with the transmitted telemetry signal even though the IntelliVue
Optimizing ECG Measurement Performance
Remedy
See "Signal Strength" below.
See "Radio Frequency Interference"
below.
ECG Monitoring
6-31