Guidance For Separation Distances - Le Maitre TRIVEX Manuel D'utilisation

Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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.
Field strengths from fixed transmitters, such as base stations for radio, (cellular/cordless) telephones, land mobile radios, amateur radios, AM and FM radio broadcasts,
a
and TV broadcasts 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 LeMaitre Vascular TRIVEX System is used exceeds the applicable RF compliance level above,
the LeMaitre Vascular TRIVEX System should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the LeMaitre Vascular TRIVEX System.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
b

GUIDANCE FOR SEPARATION DISTANCES

Recommended separation distances between portable and mobile RF communications equipment and the LeMaitre Vascular TRIVEX System
The LeMaitre Vascular TRIVEX System is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or user of the
LeMaitre Vascular TRIVEX System can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the LeMaitre Vascular TRIVEX System 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.
3 Vrms 3 Vrms
150 kHz
to 80 MHz
3 V/m 3 V/m
80 MHz
to 2.5 GHz
Separation distance according to frequency of transmitter M
150 kHz to 80 MHz
d=1.2 √p
0.12
0.38
1.2
3.8
12
Portable and mobile RF communications equipment should be
used no closer to any part of the LeMaitre Vascular TRIVEX System,
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..)
d=2.3 √(p..)
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 strength from fixed RF transmitters, as determined 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:
80 MHz to 800 MHz
d=1.2 √p
0.12
0.38
1.2
3.8
12
17
80 MHz to 800 MHz
800 MHz to 2.5 GHz
800 MHz to 2.5 GHz
d=2.3 √p
0.23
0.73
2.3
7.3
23