8. Main Specifications and Performance
-57-
Immunity Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic Environment –
Guidance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to
80 MHz
3 Vrms
Portable and mobile RF communications
equipment should be used no closer to
any part of the CX-1, including cables,
than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
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:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
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 reflections from structures, object 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. For 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 CX-1 is used exceeds
the applicable RF compliance level above, the CX-1 should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the CX-1.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
d
1.2 P
=
d
1.2 P 80 MHz to 800 MHz
=
d
2.3 P 800 MHz to 2.5 GHz
=
