a. Essential performance of the Naída CI per IEC
60601 requirements is defined as auditory stimulation
within safe amplitudes.
b. 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 electro-
magnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered.
If the measured field strength in the location in which the
Naída CI is used exceeds the applicable RF compliance
level above, the Naída CI should be observed to verify
normal operation.
c. Over the frequency range 150 kHz to 80 MHz, field
strengths should be less than 3 V/m.
Separation distances between RF
communications equipment and Naída CI
Recommended separation distances between portable
and mobile RF communications equipment and the
The Naída CI is intended for use in an
electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user
of the Naída CI can help prevent electromagnetic inter-
ference by maintaining a minimum distance between
portable and mobile RF communications equipment
(transmitters) and the Naída CI as recommended below,
according to the maximum output power of the
communications equipment.
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Naída CI