Welch Allyn RetinaVue 100 Imager, Инструкция по применению

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Electromagnetic immunity
power supply input
lines
IEC 61000-4-11
100% interruption in
250 cycles
100% interruption in
250 cycles
recommended that the 901103 be powered
from an uninterruptible power supply or a
battery.
Electromagnetic immunity
The 901103 is intended for use in the electromagnetic environment specified below. The customer or the user of the
901103 should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any part
of the 901103, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6 3 Vrms
150 kHz to 80 MHz 3 Vrms
d = (1.17)
Radiated RF
IEC 61000-4-3 3 V/m 80 MHz to 1 GHz 3 V/m
d = (1.17) 80 to 800 MHz
d = (2.33) 800 MHz to 2,7 GHz
where P is the maximum output power rating of
the transmitter in watts (W) and d is the
recommended separation distance in meters
(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:
Note1: 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 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 901103 is used exceeds the applicable RF
compliance level above, the 901103 should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the 901103.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
80 General compliance and standards Welch Allyn RetinaVue™ 100 Imager