Belmont PHOT-XIIS 505, Инструкция для оператора, Страница: 20 / 24

Guidance and manufacture’s declaration – electromagnetic immunity ’s declaration – electromagnetic immunity s declaration – electromagnetic immunity – electromagnetic immunity electromagnetic immunity
The PHOT-X Ⅱ
s 505
x-ray is intended for use in the electromagnetic environment speci fi ed below. The customer or the
user of the PHOT-X Ⅱ
s 505
x-ray 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
PHOT-X Ⅱ
s 505 x-ray, including cables,than the
recommended separation distance calculated from the
equation applications to the Frequency of the trans- pplications to the Frequency of the trans-
mitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6 3 Vrms
150 kHz to 80 MHz
outside ISM bands
a
3 Vrms d = 1.2 √ P
Radiated RF
IEC 61000-4-3 3V/m
80 MHz to 2.5 GHz 3 V/m 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 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 equipment
marked with the following symbol:
NOTE 1 At 80 MHz and 800MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by adsorption and
re
fl ection from structures, objects and people.
a
Field strengths from fi xed transmitters, such as base stations for radio (cellular/cordless) telephones and land telephones and land 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 PHOT-X Ⅱ s 505 x-ray
is used exceeds the applicable RF compliance level above, the PHOT-X Ⅱ s 505 x-ray should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the PHOT-X
Ⅱ s 505 x-ray.
b
Over the frequency range 150 kHz to 80 MHz, fi eld strengths should be less than 3V/m.
-1
7
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Essential performance (purpose of IMMUNITY testing)
Unless the exposure switch is pressed, x-ray is not exposed.