Field strengths from fixed RF
transmitters, as determined
by an electromagnetic site
survey,
a
should be less than
the compliance level in each
frequency range.
b
Interference may occur in the
vicinity of equipment marked
with the following symbol:
NOTE 1 At 80MHz and 800MHz, 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.
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 the Model 260 Audiometer is used exceeds the
applicable RF compliance level above, the Model 260 Audiometer
should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary,
such as re-orienting or relocating the Model 260 Audiometer.
b Over the frequency range 150 kHz to 80 MHz, field strengths should
be less than 3 V/m.
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