Huntleigh dopplex ABIlity, Instructions For Use Manual

Page: 49 / 56

49
Electr
oma
gnetic Compa
tibility
Guidance and Manufacturer’s declaration - electromagnetic immunity
The dopplex Ability is intended for use in the electromagnetic environment specifi ed below. The
customer or the user of the dopplex Ability should assure that it is used in such an environment.
Immunity Test
IEC 60601 test
level
Compliance
level
Electromagnetic Environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the dopplex Ability, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Conducted RF
IEC 61000-4-6 3 Vrms
150kHz to 80MHz
3V d
= 1.2
√
P
Radiated RF
IEC 61000-4-3 3 V/m
80MHz to 2.5MHz
3V/m
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)
according to the transmitter manufacturer
and
d is the recommended separation
distance in metres (m).
Field strengths from fi 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
the equipment marked with the following
symbol:
NOTE 1 At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and refl ection from structures, objects and people.
a Field strengths from fi 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
fi xed RF transmitters, an electromagnetic site survey should be considered. If the measured fi eld
strength in the location in which the dopplex Ability is used exceeds the applicable RF compliance
level above, the dopplex Ability should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating
the dopplex Ability.
b Over the frequency range 150kHz to 80kHz, fi eld strengths should be less than 3V/m.