Welch Allyn Insight 13500 Directions For Use Manual page 31

Wireless led binocular indirect ophthalmoscope
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Directions for use
The 13500 Insight BIO is intended for use in the electromagnetic environment specified below. The customer or the user
of the 13500 Insight BIO should assure that it is used in such an environment.
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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 13500 Insight BIO is used exceeds the applicable
RF compliance level above, the 13500 Insight BIO should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the 13500 Insight BIO.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic immunity
IEC 60601 test level
Compliance level
3 Vrms
3 Vrms
150 kHz to 80 MHz
3 V/m 80 MHz to 1 GHz 3 V/m
Guidance and manufacturer's declarations 27
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any part
of the 13500 Insight BIO, including cables, than
the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
d = (1,2)
d = (1,2)
80 to 800 MHz
d = (2,3)
800 MHz to 2,5 GHz
whereP is the maximum output power rating of
the transmitter in watts (W) andd is the
recommended separation distance in meters
(m). Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
a
survey
, should be less than the compliance
level in each frequency range
may occur in the vicinity of equipment marked
with the following symbol:
b
. Interference

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