Sirona DAC UNIVERSAL - Page 46

60 53 362 D3472
46 D3472.201.10.20.02 07.2016
3Product description Sirona Dental A/S
3.6Electromagnetic compatibility Operating Instructions DAC UNIVERSAL
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 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 150kHz to 80 MHz, field strengths should
be less than 3 V/m.
Conducted RF
disturbance
IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
1
3 V
eff
d= [1,2] √P
Radiated RF interference
IEC 61000-4-3
3 V/m
80 MHz - 800 MHz
1
3 V/m
800 MHz - 2.5 GHz
1
3 V
eff
3 V
eff
d= [1,2] √P
at 80 MHz - 800 MHz
d= [2,3] √P
at 800 MHz - 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
recommended safety distance in
meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey
2
should
be less than the compliance level
3
in
each frequency range.
Interference is possible in the vicinity
of equipment bearing the following
graphic symbol.
Interference immunity
tests
IEC 60601-1-2 test
level
Compliance level Electromagnetic environment -
guidelines