Zeiss VISUREF 100 User Manual page 73

Guidance and manufacturer's declaration - electromagnetic immunity
The VISUREF 100 is intended for use in an electromagnetic environment as specified below. The customer or
the user of the VISUREF 100 should ensure that it is used only in such an environment.
Immunity test IEC 60601 test
level
Conducted RF 3 V
IEC 61000-4-6 150 kHz to
80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to
2.5 GHz
Note 1: At 80 and 800 MHz, the separation distance of 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
asses 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 VISUREF 100 is used exceeds the applicable RF
compliance level above, the VISUREF 100 should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the VISUREF 100.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance level
3 V
rms
3 V/m
Electromagnetic compatibility
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the VISUREF 100, 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
d = 1.2
P
d = 2.3
P
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 meters
(m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
should be less than the compliance level in
each frequency range
Interference may occur in the vicinity of
equipment marked with the following symbol:
80 MHz to 800 MHz
800 MHz to 2.5 GHz
b
.
000000-2006-367-GA-GB-151116
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a ,