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Guidance and manufacturer‘s declaration - electromagnetic immunity
Bluephase Style 20i is intended for use in the electromagnetic environment specified below. The customer or the user of Bluephase Style 20i
should assure that it is used in such an environment.
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
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 broad -
cast cannot be predicted theoretically with accuracy. To assess the electromagnetic environ-
ment due to fixed RF transmitters, an electromagnetic site survey should be considered.
If the measured field strength in the location in which Bluephase Style 20i is used exceeds
the applicable RF compliance level above, Bluephase Style 20i should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be neces-
sary, such as reorienting or relocating Bluephase Style 20i.
b
Over the frequency range 150 kHz to 80 MHz, field strength should be less than 10 V/m.
Recommended separation distances between portable and mobile RF communications equipment
and the “Bluephase Style 20i”
Bluephase Style 20i is intended for use in the electromagnetic environment in which radiated RF disturbances are controlled. The customer or
the user of Bluephase Style 20i can help prevent electromagnetic interference by maintaining a miminum distance between portable and mobile
RF communications equipment (transmitters) and the Bluephase Style 20i as recommended below, according to the maximum output power of
the communication equipment.
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters (m) can be determined using the equation applicable to the frequency of the
transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to
the transmitter manufacturer.
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 4: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment - guidance
Portable and mobile RF communications equipment should not be
used closer to any part of Bluephase Style 20i, including cables, than
the recommended separation distance caculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 V
rms
150 kHz to 80 MHz
10 V
d = 0.35 √P
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
10 V/m
d = 0.35 √P 80 MHz to 800 MHz
d = 0.70 √P 800 MHz to 2.5 GHz
Where P is the maximum output power rating of the trans mitter 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 electro-
magnetic 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:
Table: According to IEC60601-1-2, Edition 3.0
Rated maximum
output power
of transmitter
W
Separation distance according to frequency
of transmitter
m
150 kHz to
80 MHz
d = 0.35 √P
80 MHz to
800 MHz
d = 0.35 √P
800 MHz to
2.5 GHz
d = 0.7 √P
0.01
0.035
0.12
0.23
0.1
0.11
0.38
0.73
1
0.35
1.2
2.3
10
1.1
3.8
7.3
100
3.5
12
23
Table: According to IEC 60601-1-2, Edition 3.0
