Zeiss KSK 150 FC, Instructions For Use Manual

Page: 81 / 92

Version 7.1
G-30-1158-en
Page 81
KSK 150 FC System Data
Interference re-
sistance
Tests
IEC 60601
test level
Compliance level Electromagnetic environment -
Guidelines
Portable and mobile radio communication
equipment should not be used closer to the de-
vice KSK 150 FC, including cables, than the rec-
ommended safety distance that is calculated
using the equation applicable to the transmis-
sion frequency involved.
Recommended safety distance:
Conducted RF dis-
turbances as de-
scribed in
EN 61000-4:-6 3 V
actual value
150 kHz to 80 MHz
3V
Radiated RF distur-
bances as de-
scribed in
EN 61000-4:-3 3 V
actual value
80 MHz to 2.5 GHz
3 V/m
where P is the output power rating of the trans-
mitter in watts (W) according to the transmitter
manufacturer's specifications and d is the rec-
ommended safety distance in meters (m). The
field strength of stationary transmitters as deter-
mined by a site survey should be
a
less than the
compliance level in all frequency ranges.
b
Interference may occur in the vicinity of equip-
ment marked with the following symbol.
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 influ-
enced by absorption and reflection by structures, objects and persons.
a
In theory, the field strengths of stationary transmitters such as base stations for cell phones and mobile land
radio equipment, amateur radio stations, AM and FM radio and TV transmitters cannot be predicted accu-
rately. To assess the electromagnetic environment with respect to stationary RF transmitters, a site study of
the electromagnetic phenomena should be considered. If the field strength measured at the location where
the device is used exceeds the above compliance levels, the device must be monitored to verify proper func-
tion. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or re-
locating the ME equipment or ME system.
b
Field strengths should be less than 3 V/m for the 150 kHz to 80 MHz frequency range.
d 1 2 P
,
=
for 80 MHz to 800 MHz
for 800 MHz to 2.5 GHz
d 1 2 P
,
=
d 2 3 P
,
=