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一、是非判断题(正确打“√”,错误打“×”) 1.PAL制与NTSC制电视信号中传送色度信号的主要区别是PAL制对R-Y进行逐行倒相。( ) 2.自会聚显像管的管颈上设有三组多极磁环,其中四极磁环和六极磁环是用于静会聚调整的,二极磁环用于色纯调整,如果这些磁环失调均会引起图像的彩色不良。( ) 3.色信号带通放大器的功能是从全电视信号中提取色度及色同步信号并进行放大。( ) 4.PAL制电视信号中色同步信号的相位为135°。( ) 5.PAL制彩色电视机中,一行(H)延迟线的作用是延迟亮度信号,从而使亮度信号与色度信号同时到达基色矩阵电路。( ) 6.色度信号解码电路中,梳状滤波器的功能是分离U、V
First, the non-judgments (correct hit “√”, wrong hit “×”) 1.PAL system and NTSC TV signal transmission Chroma signal is the main difference between the PAL system R-Y phase-by-line inversion. () (2) self-convergence picture tube neck with three sets of multi-pole magnetic ring, of which four-pole and six-pole magnetic ring is used to adjust the convergence of static, two magnetic ring for pure color adjustment, if these rings Disorders can cause poor color images. () 3. Color Signal The band-pass amplifier’s function is to extract the chrominance and burst signals from the full TV signal and amplify it. () 4. The phase of the burst signal in PAL TV signal is 135 °. () 5.PAL color television sets, one line (H) delay line is the role of the delay of the luminance signal, so that the luminance signal and chrominance signals arrive at the same time the primary color matrix circuit. () 6. Chroma signal decoding circuit, comb filter function is to separate U, V