Beurer TL 80 - Manual (Page 51)

51
Guidance & Declaration - Electromagnetic immunity
The model TL80 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 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3V
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the model TL80, 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 1/2 80 MHz to 800 MHz
d=2.3×P 1/2 800 MHz to 2.5 GHz
where P is the maximum output power
rating of the transmitter In watts (W) accor-
ding 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 i 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
absorption 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 theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which the model TL80 is used exceeds the applicable RF compliance level above, the model
TL80 should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the model TL80.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.