NuVasive NVM5 Manual De Instrucciones página 34

TECHNICAL SPECIFICATIONS cont.
portable and mobile RF communications equipment and the NVM5
The NVM5 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the NVM5 can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the NVM5 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 is watts (W) according to the transmitter manufacturer.
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.
Guidance and manufacturer's declaration—electromagnetic immunity
The NVM5 is intended for use in the electromagnetic environment specified below. The customer or the user of the
NVM5 should assure that it is used in such an environment.
Immunity test
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to 2.5 GHz
NOTE 1 - These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects, and people.
NOTE 2 - It is essential that the actual shielding effectiveness and filter attenuation of the shielded location be verified to assure
that they meet the minimum specification.
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, 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 outside the shielded location in which the system is used exceeds 3 V/m, the
system should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as relocating the system or using a shielded location with a higher RF shielding effectiveness and filter
attenuation.
Recommended separation distances between
Separation distance according to frequency of transmitter
150 MHz to 80 MHz
d = 1.2√P
0.12
0.38
1.2
3.8
12
IEC 06901
Compliance level
test level
3 Vrms
150 kHz to 10 MHz
0.3 mVrms
10 MHz to 20 MHz
0.03 mVrms
20 MHz to 80 MHz
0.3 mV/m
80 MHz to 100 MHz
3 V/m
100 MHz to 2.50 GHz
m
80 MHz to 800 MHz
d = 1.2√P
0.12
0.38
1.2
3.8
12
Electromagnetic environment—
The NVM5 must be used only in a shielded
location with a minimum RF shielding
effectiveness and, for each cable that enters
the shielded location, a minimum RF filter
attenuation of 80 dB from 10 MHz to 20 MHz,
100dB from 20 MHz to 80 MHz, and 80 dB from
80 MHz to 100 MHz. (The minimum at 20 MHz
is 100 dB and the minimum at 80 MHz is 80 dB.)
See page 25 of the service manual.
Field strengths outside the shielded location
from fixed RF transmitters, as determined by
an electromagnetic site survey, should be less
than 3V/m.
a
Interference may occur in the vicinity of
equipment marked with the following symbol:
32
®
80 MHz to 800 MHz
d = 2.3√P
0.23
0.73
2.3
7.3
23
guidance