BRASSELER USA EndoSync TR-CM BSL, Руководство по эксплуатации

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38 Operation 2016-03-07
Guidance and manufacturer’s declaration – electromagnetic immunity
The TR-CM is intended for use in the electromagnetic environment specified below. The customer or the user of the TR-CM
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
3.15 V
3.5 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the TR-CM, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter. Recommended separation
distance
d = 1.11 d = 80 MHz to 800 MHz
d = 2 800 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 meters (m).
Field strengths from fixed 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 affected be absorption and reflec-
tion from structures, objects and people. Power frequency magnetic field should be at levels characteristic of a typi-
cal location in a typical commercial or hospital environment.
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 broadcast cannot be predicated theoretically with accuracy. To
assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be consid-
ered. If the measured field strength in the location in which the TR-CM is used exceeds the applicable RF compliance level
above, the TR-CM should be observed to verify normal operation. If abnormal performance is observed, additional mea-
sures may be necessary, such as reorienting of relocating the TR-CM.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.