Operation Manual MA 25/MA 25e
MA 27/MA 27e
8104818 Rev. 5
36
29/06/2021
Guidance and manufacturer’s declaration — electromagnetic immunity
The
MA 25/MA 27
is intended for use in the electromagnetic environment specified below. The customer or the user of the
MA
25/MA 27
should assure that it is used in such an environment,
Immunity test
IEC / EN 60601 test level
Compliance level
Electromagnetic environment
– guidance
Portable and mobile RF communications
equipment should be used no closer to any
parts of the
MA 25/MA 27,
including cables,
than the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance:
Conducted RF
3 Vrms
3 Vrms
P
d
2
,
1
=
IEC / EN 61000-4-6
150kHz to 80 MHz
Radiated RF
3 V/m
3 V/m
P
d
2
,
1
=
80 MHz to 800
MHz
IEC / EN 61000-4-3
80 MHz to 2,7 GHz
P
d
3
,
2
=
800 MHz to 2,7
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 symbol:
NOTE1 At 80 MHz and 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
MA 25/MA 27
is used exceeds the applicable RF compliance level above, the
MA 25/MA 27
should be observed to verify normal operation, If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the
MA 25/MA 27.
b)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
