标题: 电视机ERP测试方法 [打印本页] 作者: tangsina2012 时间: 2014-3-11 14:04 标题: 电视机ERP测试方法 请问电视机测ERP(No.642 2009)on mode的时候声音信号该加多大？ 1 Q& M x5 F1 W+ o测试方法62087 是这么描述的，请问一下各位大侠，这段话该怎么理解？具体怎么实现 . M, S8 W) Z i' _3 o' ^/ V3 {, @In the case that the television set is being tested with an analogue terrestrial RF input signal,5 K) k6 v% w- o1 n" n/ i$ o1 @
the signals used shall conform to IEC 60107-1:1997, 3.3, and shall have the input signal level 9 D$ t& v2 i4 Kset at –39 dB(mW) when terminated with a 75 Ω resistor or at a level to provide a perceptually4 u0 S" w' R1 U# C5 w
noise free or error free picture.3 `6 q$ l8 G/ G, ~
NOTE –39 dB(mW) corresponds to 70 dB(μV).' o+ J3 U+ `1 c! K8 ^/ A! p