Sirona c8+ turn - Page 39

Sirona Dental Systems GmbH 3 Electromagnetic compatibility
Installation Requirements C8
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Tu r n
60 28 000 D3417
D3417.021.04.11.02 39
English
Portable and mobile radio equipment
must not be used within the recom-
mended working clearance from the
UNIT and its cables, which is calcu-
lated based on the equation suitable
for the relevant transmission fre-
quency.
Recommended working clearance:
Conducted RF inter-
ference
IEC 61000-4-6
3V
eff
150 kHz to 80 MHz
a
3V
eff
Radiated HF interfer-
ence
IEC 61000-4-3
3V/m
80MHz to 800MHz
a
3V/m
800MHz to 2.5GHz
a
3V
eff
3V
eff
where P is the nominal transmitter
output in watts (W) specified by the
transmitter manufacturer and d is the
recommended working clearance in
meters (m).
Field strengths from fixed RF trans-
mitters, as determined by an electro-
magnetic site survey
b
, should be less
than the compliance level
c
in each
frequency range.
Interference is possible in the vicinity
of equipment bearing the following
graphic symbol.
a. The higher frequency range applies at 80MHz and 800MHz.
b. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile
radios, amateur radio, AM/FM radio and TV broadcasts, cannot be predicted theoretically with accuracy. An investiga-
tion of the location is recommended to determine the electromagnetic environment resulting from stationary RF trans-
mitters. If the measured field strength in the location in which the UNIT is used exceeds the applicable RF compliance
level above, the UNIT should be observed to verify normal operation. If unusual performance characteristics are
observed, it may be necessary to take additional measures such as reorientation or repositioning of the UNIT.
c. Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.
Interference immu-
nity tests
IEC 60601-1-2 test level Compliance level Electromagnetic environment
guidelines
d 12P=
d 12P=
at 80MHz to 800MHz
d 23P=
at 800MHz to 2.5GHz