21
Immunity
test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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
Medical LED Headlight is used exceeds the applicable RF compliance level above, The Medical LED
Headlight should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating The Medical LED Headlight.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 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.
IEC 60601
test level
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
3 Vrms
3 V/m
Compliance
level
Guidance and manufacture’s declaration – electromagnetic immunity –
for ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
The Medical LED Headlight is intended for use in the electromagnetic environment specified below. The
customer or the user of Medical LED Headlight should assure that it is used in such an environment.
Guidance and manufacture’s declaration – electromagnetic immunity
Electromagnetic environment - guidance
Portable and mobile RF communications equipment
should be used no closer to any part of The Medical
LED Headlight including cables, than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Portable and mobile RF communications equipment
should be used no closer to any part of the including
cables, than the recommended separation distance
calculated from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
d = 1.167
d = 1.167 80 MHz to 800 MHz
d = 2.333 800 MHz to 2.5 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.
Interference may occur in the vicinity of equipment
marked with the following symbol:
P
P
P
