Vatech EzRay Chair, Руководство пользователя

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0. Appendix
70 EzRay Chair (VEX-S300C) User Manual
Guidance and manufacturer’s declaration - electromagnetic immunity
The EzRay Chair (VEX-S300C) is intended for use in the electromagnetic
environment specified below. The customer or the user of the EzRay Chair (VEX-
S300C) should assure that it is used in such an electromagnetic 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
150 kHz to
80 MHz
3V /m
80 MHz to
2.5 GHz
The EzRay Chair (VEX-S300C)
must be used only in a shielded
location with a minimum RF
shielding effectiveness and, for
each cable that exits the shielded
location, a minimum RF filter
attenuation of 20 dB from 30 MHz
to 230 MHz, 20 dB from 230 MHz to
1 GHz. Field strengths outside the
shielded location from fixed RF
transmitters, as determined by an
electromagnetic site survey, should
be less than 3 V/m. Interference
may occur in the vicinity of
equipment marked with the
following symbol:
NOTE 1) These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects, and
people.
NOTE 2) It is essential to verify that the actual shielding effectiveness of the shield
position and filter attenuation meet the minimum specifications.
Field strength 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.
Electromagnetic field studies should be considered to evaluate the electromagnetic
environment caused by fixed RF transmitters. If the measured field strength outside
the shielded location in which the EzRay Chair (VEX-S300C) is used exceeds 3V/m,
the EzRay Chair (VEX-S300C) should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
relocating the EzRay Chair (VEX-S300C) or using a shielded location with a higher
RF shielding effectiveness and filter attenuation.