EMC GUIDANCE & MANUFACTURER’S DECLARATION
35
D-0014930-A
– Otowave 102-C Operating Manual
Guidance and manufacturer’s declaration – electromagnetic immunity (2)
The Otowave 102-C tympanometer is intended for use in the electromagnetic environment specified below.
The customer or user of the Otowave 102-C tympanometer should assure that it is used in such an
environment.
Immunity
test
IEC 60601
test level
Compliance level
Electromagnetic environment
– guidance
Radiated
RF
IEC
61000-4-
3
3 V/m
80MHz
to
2.5GHz
3 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the Otowave
102-C tympanometer, including cables, than the
recommended separation distance calculated from
the equation applicable to the frequency of the
transmitter.
Recommended separation distance
d = 1.2√P 80MHz to 800MHz
d = 2.3√P 800MHz to 2.5GHz
where P is the maximum output power rating of the
transmitter in Watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in metres (m).
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 Otowave 102-C tympanometer is used exceeds the applicable RF
compliance level above, the Otowave 102-C tympanometer should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the Otowave 102-C tympanometer.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
