Limits for Electromagnetic Compatibility (EMC)
44
Guidance and manufacturer’s declaration – electromagnetic immunity
The MegaDVR is intended for use in the electromagnetic environment specified below.
The customer or the user of the MegaDVR should assure that it is use in such an environment.
Immunity
IEC 60601 test level
Compliance level
Electromagnetic environment-guidance
Conducted RF
disturbances
IEC 61000-4-6
Radiated RF disturbances
IEC 61000-4-3
3 Vrms
150kHz to 80 MHz
3 V/m
80MHz to 2.5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the
MegaDVR, including cables, than the
recommended separation distance calculated from
the equation appliance to the frequency of the
transmitter.
Recommended separation distance
d = 1.2
d = 1.2 80 MHz to 800 MHz
d=2.3 800MHz 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 an electromagnetic site survey,
should be less than the compliance level in each
frequency range.
Interference may occur in the vicinity of equipment
marked with 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.
*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 abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the MegaDVR.
*Over the frequency range 150kHz to 80 MHz, field strengths should be less than 3 V/m.
Содержание MegaDVR
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