Planmeca Chairside PlanCAD Easy, Руководство пользователя

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32 SCANNER EMC INFORMATION
User’s manual Planmeca Chairside CAD/CAM solution 167
Radiated RF
IEC 61000-4-3
3 V/m 80.0 MHz to
2.5 GHz
3 V/m Recommended
separation distance
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 deter-mined by an
electromagnetic site
survey, (a) should be
less than the
compliance level in
each frequency range
(b).
Interference may occur
in the vicinity of
equipment 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
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 assess
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
EUT is used exceeds the applicable RF compliance level above, the EUT should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the EUT.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V
/ m.
Recommended Separation Distances Between Portable and Mobile RF
Communications Equipment and the Planmeca PlanScan scanner.
The Planmeca PlanScan scanner is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The user of the
Planmeca PlanScan scanner can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Planmeca PlanScan scanner as recommended
below, according to the maximum output power of the communications equipment.