a. Field strengths from fixed transmitters, such as base stations for radio (cellular/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 should be considered. If the measured field strength in the location in which AURICAL OTOcam 300 is used exceeds the applic-
able RF compliance level above, the AURICAL OTOcam 300 should be observed to verify normal operation. If abnormal performance is observed, additional
measures might be necessary, such as reorienting or relocating AURICAL OTOcam 300.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and AURICAL OTOcam 300
The AURICAL OTOcam 300 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the AURICAL OTOcam 300 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF com-
munications equipment (transmitters) and the AURICAL OTOcam 300 as recommended below, according to the maximum output power of the com-
munications equipment.
Rated maximum output power of
transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d = 1.2
80 MHz to 800 MHz
d = 1.2
800 MHz to 2.5 GHz
d = 2.3
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 meters (m) can be estimated using the equa-
tion 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.
Otometrics - AURICAL OTOcam 300
31
App. 1 Technical Specifications
