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[12]EMC Technical Description
Guidance and manufacturer’s declaration-electromagnetic immunity
The TU110 is intended for use in the Electromagnetic environment specified below.
The customer or the user of the TU110 should assure that it is used in such an environment.
Immunity test IEC 60601 test level
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3Vrms (c)
150KHz to 80MHz
outside ISM bands
6Vrms (c)
150kHz to 80MHz
inside ISM bands
3V/m
80MHz to 2.7GHz
3Vrms
150KHz to 80MHz
3V/m
80MHz to 2.7GHz
Compliance level
Electromagnetic
environment-guidance
Portable and mobile RF
communications equipments should be
used no closer to any part of the TU110,
including cables, than the recommend-
ed separation distance calculated from
the equation applicable to the frequen-
cy of the transmitter.
Recommended separation distance
d = 1.17
×√
P
d = 1.17
×√
P 80MHz to 800MHz
d = 2.33
×√
P 800MHz to 2.7GHz
where P is the maximum output
power rating of the ttransmitter in
watts(W) according to the transmitter
manufacuturer and d is the recommen-
ded separation distance in metre(m).
Field strengths from fixed RF
transmitters,as determined by an elec-
tromagnetic 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 80MHz and 800MHz,the higherfrequency range applies.
NOTE 2: These guidelines may not apply in all siteations. 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 mobile radio, 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 TU110 is used exceeds the applicable RF compliance level above, the TU110 should be
observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary. Such as reorienting or relocating the TU110.
(b) Over the frequency range 150KHz to 80MHz. field strengths should be less than 3V/m.
(c) The ISM(industrial, scientific and medical) bands between 150kHz and 80MHz are 6.765MHz to
6.795MHz; 13.533MHz to 13567MHz; 26.957MHz to 27.283MHz; and 40.66MHz to 40.7MHz.
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