natus Photic Stimulator, Руководство пользователя и обслуживания

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Natus Photic Stimulator User & Service Manual
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IEC 60601-1-2:2007 Table 4 Requirements:
The Natus Photic Stimulator is intended for use in the electromagnetic environment specified
below. The customer or the user of the equipment 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
1 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the equipment
including cables, than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
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 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 known RF
transmitting devices and equipment 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 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 broadcast cannot be predicted theoretically with accuracy. To
assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the equipment is used exceeds the applicable RF
compliance level above, the equipment should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the equipment
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.