27
11
Guidance and manufacture’s declaration – electromagnetic immunity
The headlamps ri-‐focus and Forehead mirror Clar N is intended for use in the electromagnetic environment specified below. The customer or the
user of the Headlamps ri-‐focus and Forehead mirror Clar N 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
Not applicable
Not applicable
Portable and mobile RF communications equipment should be used
no closer to any part of the ri-‐focus and clar N, 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 80 MHz to 800 MHz
d= 2.3√P 800 MHz to 2.7 GHz
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
Proximity fields from
RF wireless
communications
equipment
10 V/m
80 MHz to 2.7 GHz
10 V/m
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 landmobile radios, amateur radio, AM
and FM radio broadcast and TV broadcast cannot be predicted theoreticallywith accuracy. To assess the electromagnetic environment due to
fixed RF transmitters, an electromagnetic sitesurvey should be considered. If the measured field strength in the location in which the Headlamps
ri-‐focus and Forehead mirror Clar N is used exceeds the applicable RF compliance level above, the Headlamps ri-‐focus and Forehead mirror Clar N
should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-‐orienting
or relocating the Headlamps ri-‐focus and Forehead mirror Clar N.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
