System Specifications
Electromagnetic Compatibility
User Manual
83
Guidance and Manufacturer
’
s Declaration -- Electromagnetic Immunity
The system is intended for use in the electromagnetic environment specified below. The customer or user of the system
should ensure that it is used in such an environment.
Immunity Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic Environment - Guidance
Portable and mobile RF communications equipment should be
used no closer to any part of the system, including its cables,
than the recommended separation distance calculated from the
equation applicable to the frequency of the transmitter.
Recommended Separation Distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
d = 1.17
¯
P
Radiated RF
IEC 61000-4-3
3V/m
80 MHz to 2.5 GHz
3 V/m
d = 1.2
¯
P 80 MHz to 800 MHz
d = 2.3
¯
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 strengths from fixed RF transmitters, as determined by the
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 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, 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 system is used exceeds the applicable RF
compliance level above, the system should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the system.
(b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
