1.5 Electromagnetic Immunity (cont.)
Guidance and manufacturer’s declaration - electromagnetic immunity
The TotalAlert Embedded control system is intended for use in the electromagnetic environment speci
fi
ed below. The
customer or the user of the TotalAlert Embedded control system should assure 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
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2,5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equip-
ment should be used no closer to any part of the
TotalAlert Embedded control system, including ca-
bles, 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 80 MHz to 800 MHz
d = 2,3
√
P 800 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 recom-
mended 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 equip-
ment marked with the following symbol:
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 a
ff
ected by absorption and
re
fl
ection from structures, objects and people.
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 TotalAlert Embedded control
system is used exceeds the applicable RF compliance level above, the TotalAlert Embedded control system should
be observed to verify normal operation. If abnormal performance is observed, additional measures may be neces-
sary, such as reorienting or relocating the TotalAlert Embedded control system.
Over the frequency range 150 kHz to 80 MHz,
fi
eld strengths should be less than 3 V/m.
a
b
Lubricated Rotary Vane Laboratory Vacuum Systems
4107 9021 88.01
1-3
