EMSI FLEX-MT PLUS - Electromagnetic Immunity Guidance Continued; Electromagnetic Immunity - RF Interference; RF Separation Distance Guidelines

Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 KHz to
80 MHz
3 V/m
80MHz to
2.5 GHz
3 Vrms
3 V/m
Guidance and manufacturer’s declaration-electromagnetic immunity
e Flex-MT® Plus is intended for use in the electromagnetic environment specied below.
e user of the Flex-MT® Plus should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic
environment-guidance
31
Portable and mobile RF communications equipment should
be used no closer to any part of the Flex-MT® Plus
including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of
the transmitter.
Recommended separation distance:
d = 1.2 √P
d = 1.2 √P 80MHz to 800 MHz
d = 2.3 √P 800MHz 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 metres (m).
Field strengths from xed 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:
NOTE 1-At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2-ese guidelines may not apply in all situations. Electromagnetic
propagation is aected by absorption and reection from structures, objects
and people.
(a)Field strengths from xed 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 xed RF
transmitters, an electromagnetic site survey should be considered. If the
measured eld strength in the location in which the Flex-MT® Plus is used
exceeds the applicable RF compliance level above, the Flex-MT® Plus should
be observed to verify normal operation. If abnormal performance is
observed, additional measures my be necessary, such as re-orienting or
relocating the Flex-MT® Plus.
(b) Over the frequency range 150 kHz to 80 MHz, eld strengths should be
les than 3 V/m.