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Guidance and manufacturer's declaration - electromagnetic immunity
The CT-80 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CT-80 should assure that it is used in such an environment.
Immunity test IEC 60601
test level
Compliance
level
Electromagnetic environment-
guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150kHz to 80MHz
3 V/m
80MHz to 2.5GHz
3 V
3 V/m
Portable and mobile RF communications
equipment should be used no closer to
any part of the CT-80, including cables,
than the recommended separation dis-
tance calculated from the equation appli-
cable to the frequency of the transmitter.
Recommended separation distance
d = 1.2 _
P
d = 1.2 _
P 80MHz to 800MHz
d = 2.3 _
P 800MHz to 2.5GHz
where P is the maximum output power
rating of the transmitter in watts (W) ac-
cording to the transmitter manufacturer
and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmit-
ters, as determined by an electromag-
netic 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 af-
fected 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 pre-
dicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF trans-
mitters, an electromagnetic site survey should be considered. If the measured field strength in the loca-
tion in which the CT-80 is used exceeds the applicable RF compliance level above, the CT-80 should
be observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the CT-80.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
49
REFERENCE
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