Bausch & Lomb STELLARIS PC, Руководство оператора

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Operator’s Manual 8-7 110017276EN Rev. B
8 Specifications
Guidance and Manufacturer’s declaration – electromagnetic immunity
The Stellaris® PC Vision Enhancement System is intended for use in the electromagnetic environment
specified below. The customer or the user 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 3 Vrms 150 kHz
to 80 MHz
3 Vrms
Portable and mobile RF communications equipment
should be used no closer to any part of the
Stellaris® PC
Vision Enhancement System , including
cables, than the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended Separation distance
d =
1,2
√P (Conducted)
d =
1,2
√P 80 Mhz to 800 MHz (Radiated)
d =
2,3
√P 800 Mhz to 2,5 GHz (Radiated)
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 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 equipment
marked with the following symbol:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2,5 GHz
3 V/m
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: 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
Stellaris® PC Vision Enhancement System is used exceeds the applicable RF compliance level above,
the Stellaris® PC Vision Enhancement System should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating the
Stellaris® PC Vision Enhancement System .
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.