Philips IntelliVue TRx Instructions For Use Manual page 125

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.
Problem
Dropouts
Signal Strength 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:
Corrective Action
Radio
Radio frequency (RF) interference is caused by other devices that intrude into
Frequency
the transmitted electrical signal. You are probably familiar with electrical
Interference 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 Telemetry System is designed to resist these
Draft - 1 Aug 08
Cause
Low signal strength
RF interference
• "Cannot analyze ECG"
• "Cannot analyze ST
• "Tele Weak signal"
• "No signal"
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.
Optimizing ECG Measurement Performance
Remedy
See "Signal Strength" below.
See "Radio Frequency Interference"
below.
ECG Monitoring 6-31