EMC GUIDANCE & MANUFACTURER’S DECLARATION
36
D-0014930-A
– Otowave 102-C Operating Manual
Guidance and manufacturer’s declaration – electromagnetic immunity (2)
Recommended separation distances between portable and mobile RF communications equipment
and the Otowave 102-C tympanometer
The Otowave 102-C tympanometer is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the Otowave 102-C tympanometer can help
prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Otowave 102-C tympanometer 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 80 MHz
d =
1.2√P
80 MHz to 800 MHz
d = 1.2√P
800 MHz to 2.5 GHz
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
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 80MHz and 800MHz, 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.
