D-0126021-A
23
Recommended separation distances between
Portable and mobile RF communications equipment and the Avant Hearing Instrument Test Box
The Avant Hearing Instrument Test Box is intended to use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the
user of the Avant Hearing Instrument Test Box can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Avant Hearing Instrument Test Box as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter
W
Separation distance according to frequency of transmitter
meters
150 kHz to 80 MHz
d = 1,17
P
×
80 MHz to 800 MHz
d = 1,17
P
×
800 MHz to 2,5 GHz
d = 2,33
P
×
0,01
0,12
0,12
0,233
0,1
0,37
0,37
0,74
1
1,17
1,17
2,33
10
3,7
3,7
7,40
100
11,7
11,7
23,3
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.
