User`s guide

Dexcom G4 User’s Guide | 125
a. Field strengths from xed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile radios, amateur radio, AM
and FM radio broadcast, and TV broadcast cannot be predicted theoretically
with accuracy. To assess the electromagnetic environment due to xed RF
transmitters, an electromagnetic site survey should be considered. If the
measure eld strength in the location in which the receiver is used exceeds
the applicable RF compliance level above, the receiver should be observed
to verify normal operation. If abnormal performance is observed, additional
measures may be necessary such as reorienting or relocating the receiver.
b. Over the frequency range 150 kHz to 80 MHz, eld strengths should be less
than 3 V/m.
System
Immunity Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic Environment
Guidance
Radiated
RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
80 MHz to
2.5 GHz
Field strengths from xed RF
transmitters, as determined by
an electromagnetic site survey
a
should be less than the compliance
level in each frequency range
b
.
Interference may occur in the vicinity
of equipment marked with following
symbol: