NSK Varios 370 Mode D'emploi page 19

Guidance and manufacturer's declaration - electromagnetic immunity
The Varios 370 / Varios 370 Lux is intended for use in the electromagnetic environment specified below. The customer or the user of the Varios 370 / Varios 370 Lux
should assure that it is used in such an environment.
Immunity test EN/IEC60601 test level
Conducted RF 3Vrms
EN/IEC61000-4-6 150 kHz to 80MHz
Radiated RF 3V/m
EN/IEC61000-4-3 80MHz to 2.5 GHz
NOTE 1 At 80MHz and 800MHz, 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 mobiles 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 Varios 370 / Varios 370 Lux is used exceeds the
applicable RF compliance level above, the Varios 370 / Varios 370 Lux should be observed to verity normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the Varios 370 / Varios 370 Lux.
b Over the frequency range 150kHz to 80MHz, field strengths should be less than 3 V/m.
Cables and accessories Maximum length
Handpiece cord 2 m (Unshielded)
Foot Control 5 m (Unshielded)
AC Adaptor 5 m (Unshielded)
Recommended separation distances between portable and mobile RF communications equipment and the Varios 370 / Varios 370 Lux.
The Varios 370 / Varios 370 Lux is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the Varios 370 / Varios 370 Lux can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Varios 370 / Varios 370 Lux as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power of transmitter
W
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated using the equation
applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
Compliance level
3Vrms
3V/m
Complies with
RF emissions, CISPR11, EN55011
Harmonic emissions,
Voltage fluctuations/ flicker emission,
Electrostatic discharge (ESD)
Electric fast transient / burst
Surge
Voltage dips, short interruptions and voltage variations on power supply input lines
Power frequency(50/60Hz) magnetic field
Conducted RF
Radiated RF
Separation distance according to frequency of transmitter
150kHz to 80MHz
d=1.2 P
0.12
0.38
1.2
3.8
12
18
Electromagnetic environment - guidance
Portable and mobile RF communications equipment should be used
no closer to any part of the Varios 370 / Varios 370 Lux, including
cables, than the recommended separation distance calculated from
the equation applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2 P
d = 1.2 P 80MHz to 800MHz
d = 2.3 P 800MHz to 2.5GHz
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 determined by an
electromagnetic site survey, should be less than the compliance level
in each frequency range.
Interference may occur in the vicinity of equipment
marked with the following symbol:
m
80MHz to 800MHz
d=1.2 P
0.12
0.38
1.2
3.8
12
Class B/ Group 1
EN/IEC61000-3-2
EN/IEC61000-3-3
EN/IEC61000-4-2
EN/IEC61000-4-4
EN/IEC61000-4-5
EN/IEC61000-4-11
EN/IEC61000-4-8
EN/IEC61000-4-6
EN/IEC61000-4-3
800MHz to 2.5GHz
d=2.3 P
0.23
0.73
2.3
7.3
23