21 Notes on EMC (Electromagnetic Compatibility)
138
MADSEN Zodiac
The Madsen Zodiac is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the
Madsen Zodiac can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Madsen Zodiac as recommended below, according to the maximum output power of the communications equipment.
Recommended separation distances between portable and mobile RF communications equipment and MADSEN Zodiac
Guidance and manufacturer's declaration - electromagnetic immunity - for equipment and systems that are NOT life-supporting
Madsen Zodiac is intended for use in the electromagnetic environment specified below. The Madsen Zodiac user should ensure 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
3 V rms
150 kHz to 80 MHz
3 V rms
150 kHz to 80 MHz
Portable and mobile RF communications equipment
should be used no closer to any part of Madsen Zodiac,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance:
d = 1.2
d = 1.2
for 80 MHz to 800 MHz
d = 2.3
for 80 MHz to 2.5 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 this symbol:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
80 MHz to 2.5 GHz
Note 1
: At 80 MHz and 800 MHz the separation distance for 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 Madsen Zodiac is used exceeds the applicable RF
compliance level above, the Madsen Zodiac should be observed to verify normal operation. If abnormal performance is observed, additional measures
might be necessary, such as reorienting or relocating Madsen Zodiac.
b.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
