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Table 3: Guidance & Declaration - electromagnetic immunity concerning Conducted RF & Radiated RF
Guidance and manufacturer’s declaration – electromagnetic immunity
The model TL 70 is intended for use in the electromagnetic environment specified below.
The customer or the user should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment –
guidance
Conducted RF lEC
61000-4-6
Radiated RF lEC
61000-4-3
3 V
rms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the model TL 70, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
3V
d=1.2 P 80MHz to 800MHz
d=2.3 P 800MHz to 2.5 GHz
where
P
is the maximum output power rating
of the transmitter In watts (W) according to
the transmitter manufacturer and
d
Is the
recommended separation distance in meters
(m).
Field strengths from fixed 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 sym-
bol:
symbol:
NOTE 1
At 80 MHz end 800 MHz. the higher frequency range applies.
NOTE 2
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorpti-
on and reflection from structures, objects and people.
a
Field strengths from fixed 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 theoreti-
cally with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electroma-
gnetic site survey should be considered. If the measured field strength in the location in which the model TL
70 is used exceeds the applicable RF compliance level above, the model TL 70 should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the model TL 70.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
