Essilor Instruments Vision-R 800, Руководство пользователя

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Manufacturer guidelines and declaration - Electromagnetic immunity
Vision-R
TM
800 is intended to be used in the electromagnetic environment specified below.
It is up to the customer or the user to verify that the instrument is used in this environment.
Immunity test
Test level
IEC 60601
Compliance
level
Electromagnetic environment – Guidelines
Conducted RF
disturbances IEC
61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
0.15 KHz
to 80 MHZ
3 V/m
80 MHZ to
2.7 GHZ
3 Vrms
0.15 KHz
to 80 MHZ
3 V/m
80 MHZ to
2.7 GHZ
Portable and mobile RF communications equipment should not
be used any closer to any part of the instrument, including
cables, than the recommended separation distance calculated
according to the equation applicable to the frequency of the
transmitter.
Recommended separation distance
d= 1.2 √P
d= 1.2 √P 80 MHZ to 800 MHZ
d= 2.3 √P 800 MHZ to 2.7 GHZ
knowing that (P) represents the maximum rated output power
of the transmitter in watts (W) according to the manufacturer
of the transmitter, and (d) is the recommended separation
distance in meters (m).
The field strength emitted by RF transmitters, as determined
by an electromagnetic study i should be less than the
compliance level in each frequency range b .
Interference may occur near equipment marked with the
following symbol:
NOTE 1: At 80 MHZ and 800 MHZ, the higher frequency range applies.
NOTE 2: These indications may not apply to all the situations. Electromagnetic propagation is affected by
absorption and reflections of structures, objects and people.
i
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and
land mobile radios, amateur radio, AM and FM radio broadcasting, and TV broadcasting, 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 at the location where the
instrument is used exceeds the applicable RF compliance level stated above, please check to ensure the
instrument is operating normally. If abnormal performance is observed, additional measures may be
necessary, for example the reorientation or movement of the instrument.
b On the frequency range ranging between 150 KHz and 80 MHZ, field strengths must be less than 3 V/m.
U
SER MANUAL
> VIII. G
ENERAL WARNINGS
89
Vision-R 800 - Essilor automatic phoropter > V1 - 12-2018