Widex UNIQUE U-FS, Инструкция пользователя, Страница: 39 / 52

NOTE 1 At 80 MHz and 800 MHz, 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, ob-
jects and people.
a. Field strengths from fixed transmitters, such as base stations
for radio (cellular/cordless) telephones and land mobile radios, amateur ra-
dio, AM and FM radio broadcast and TV broadcast cannot be predicted the-
oretically 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 the UNIQUE™ series
hearing aid is used exceeds the applicable RF compliance level above, the
UNIQUE™ series hearing aid should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessa-
ry, such as re-orienting or re-locating the UNIQUE™ series hearing aid.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be
less than 3 V/m.
Recommended separation distances
Recommended separation distances between portable and mobile RF com-
munication equipment and the UNIQUE™ series hearing aids.
The UNIQUE™ series hearing aids are intended for use in the electromagnet-
ic environment in which RF disturbances are controlled. The customer or the
user of the UNIQUE™ series hearing aid can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mo-
39