B.Well WF-1000, Instructions For Use Manual

Page: 23 / 28

23
Instructions for use
En
WF-1000
Immunity
test
IEC 60601
test level
Compli-
ance level
Electromagnetic
enviroment-guidance
Radiated RF
IEC 61000-
4-3
3 V/m
80 MHz
to
2,5 GHz
3 V/m
Portable and mobile RF communications
equipment should be used no closer to
any part of the WF-1000 Thermometer,
including cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of
the transmitter
Recommended separation distance
d=1.2 P
d=1.2 P 80 MHz to 800 MHz
d=2.3 P 800 MHz to 2,5 GHz
where P is the maximum output power
rating of the ransmitter in watts (W) ac-
cording to the transmitter manufacturer
and d is the recommended separation
distance in metres(m).
Field strengths from fi 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 the following
symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
refl ection from structures, objects and people.
a. Field strengths from fi 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 fi xed RF transmitters, an electromagnetic site
survey should be considered. If the measured fi eld strength in the location in which the WF-1000 Thermometer is
used exceeds the applicable RF compliance level above, the WF-1000 Thermometer should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorient-
ing or relocating the WF-1000 Thermometer.
b. Over the frequency range 150 kHz to 80 MHz, fi eld strengths should be less than 3 V/m.