EN55032中CE(Class B)在不同电压下的CE传导限值

Table A.13 – Requirements for conducted differential voltage emissions from Class B equipment

Applicable to1.  TV broadcast receiver tuner ports (3.1.8) with an accessible   connector

2.  RF modulator output ports  (3.1.29)

3.  FM broadcast receiver tuner ports (3.1.8) with an accessible   connector

Table clause Frequency range MHz Detector type/ bandwidth Class B limitsdB(mV) 75 W Applicability
Other Local OscillatorFundamental Local Oscillator Harmonics
A13.1 30 to 950  For frequencies

£1 GHz

 

Quasi Peak/ 120 kHz

 

 

For frequencies

³1 GHz

 

Peak/ 1 MHz

46 46 46 See a
950 to 2 150 46 54 54
A13.2 950 to 2 150 46 54 54 See b
A13.3 30 to 300 46 54 50 See c
300 to 1 000 52
A13.4 30 to 300 46 66 59 See d
300 to 1 000 52
A13.5 30 to 950 46 76 46 See e
950 to 2 150 n/a 54
a           Television receivers (analogue or digital), video recorders and PC TV broadcast receiver tuner cards working in channels between 30 MHz and 1 GHz, and digital   audio receivers.b           Tuner units (not the LNB) for satellite signal   reception.

c           Frequency modulation audio receivers and PC tuner   cards.

d           Frequency modulation car radios.

e           Applicable to EUTs with RF modulator output ports  (for  example DVD  equipment, video  recorders, camcorders and decoders etc.) designed to connect to TV broadcast receiver tuner ports. Limits specified for the LO are for     the RF modulator carrier signal and  harmonics.

The term ‘other’ refers to all emissions other than the fundamental and the harmonics of the LO. The measurement shall cover the entire frequency  range.

The EUT shall be tuned in accordance with Table B.3    and clause C.4.2.1.