6 Technical data
6.7 Electromagnetic Immunity
Dentsply Sirona
Operating Instructions SiroCam UAF Plus
30
66 90 643 D3762
D3762.201.01.01.02 08.2018
Interference immunity
tests
IEC 60601-1-2 test
level
Compliance level
Electromagnetic environment –
guidelines
Portable and mobile radio equip-
ment must not be used within the
recommended working clearance
from the UNIT and its cables, which
is calculated based on the equation
suitable for the relevant transmis-
sion frequency.
Recommended working clearance:
Conducted RF interfer-
ence
IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
1
3 V
eff
d= [1.2] √P
Radiated RF interfer-
ence
IEC 61000-4-3
3 V/m
80 MHz to 800 MHz
1
3 V/m
800 MHz to 2.5 GHz
1
3 V
eff
3 V
eff
d= [1.2] √P
at 80 MHz to 800 MHz
d= [2.3] √P
at 800 MHz to 2.5 GHz
With
P
as the power rating of the
transmitter in watts (W) according
to the transmitter manufacturer’s
specifications and
d
as recom-
mended safety distance in meters
(m).
Field strengths from fixed RF trans-
mitters, as determined by an elec-
tromagnetic site survey
2
should be
less than the compliance level
3
in
each frequency range.
Interference is possible in the vicin-
ity of equipment bearing the follow-
ing graphic symbol.
1.
The higher frequency range applies at 80 MHz and 800 MHz.
2.
The field strengths of fixed transmitters, such as base stations of
radiotelephones and mobile agricultural radio broadcast services,
amateur radio stations, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. A site
survey is recommended to assess the electromagnetic environment
due to fixed RF transmitters. 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 at every
location 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.
3.
Over the frequency range 150 kHz to 80 MHz, field strengths should
be less than 3 V/m.
