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
150kHz to 80MHz
80MHz to 2.5GHz
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 √_
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
Interference may occur in the vicinity of
equipment marked with the following
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.