Ambu VivaSight 2 DLT 35 Fr Mode D'emploi page 15

NOTE 1: At 80 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 (celluar/ 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 shall be
considered. If the measured field strength in the location in which the system is used
exceeds the applicable RF compliance level above, the system shall be observed to verify
normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the system.
b) Over the frequency range 150 kHz to 80 MHz, field strengths shall be less than 3 V/m.
Recommended Separation Distances Between Portable and Mobile
The system is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The user of the system can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters and the system as recommended below,
according to the maximum output power of the communication equipment.
Rated maximum
output power (W)
of transmitter
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.
RF Communication Equipment and system
Separation distance (m) according to frequency of transmitter
150 kHZ to 80 MHz
d = 1.17
0.12 m
0.37 m
1.17 m
3.70 m
11.7 m
80 MHz to 800 MHz
d = 1.17
0.12 m
0.37 m
1.17 m
3.70 m
11.7 m
800 MHz to 2.7 GHz
d = 2.33
0.23 m
0.74 m
2.33 m
7.37 m
23.3 m
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