Recommended separation distance
d
= 1.17
√𝑃
d
= 1.17
√𝑃
80 MHz to 800 MHz
d
= 1.17
√𝑃
800 MHz to 2.5 GHz
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 meters (m).
Field Strengthens 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:
Note 1:
At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2
: These guidelines may not apply to 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 Pello is used exceeds the applicable
RF compliance level above, the Pello should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the Pello.
(b*) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
To ensure compliance with the EMC requirements as specified in IEC 60601-1-2, it is essential to use only the
following accessories:
ITEM
MANUFACTURER
MODEL
DD45 Audiometric Headset P3045
RadioEar
DD45
IP30 Insert Phone 10ohm set
RadioEar
IP30
B71 Bone conductor headset 10 Ohm
(lead-free)
RadioEar
B71
Conformance to the EMC requirements as specified in IEC 60601-1-2 is ensured if the cable types and cable lengths
are as specified below:
Description
Length
Screened/Unscreened
Mains Cable
2.5m
Unscreened
USB Cable
1.8m
Screened
DD45 Audiometric Headset P3045
2.0m
Screened
IP30 Insert Phone 10ohm set
2.0m
Screened
B71 Bone Conductor headset
2.0m
Unscreened