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18
9. Specifications and electrical ratings
Recommended separation distances between portable and mobile RF communications equipment and the Jazz Otoscope / Ophthalmoscope
The Jazz Otoscope / Ophthalmoscope is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the Jazz Otoscope / Ophthalmoscope can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the Jazz Otoscope / Ophthalmoscope 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
m
150 kHz to 80MHz
d = 1.2
√
P
80MHz to 800MHz
d = 1.2
√
P
800MHz to 2.5GHz
d = 2.3
√
P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23.3
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (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.
