Optical Transmitter by the light source, and the modulator driver components.
光发射机是由光源、驱动器和调制器组成。
To minimize the frequency and phase distortion in a DTV transmitter in order to achieve best VSB frequency performance, a pre equalizer can be inserted into the modulator.
为了补偿数字电视发射机的频谱畸变与相位失真，以得到最佳的VSB频谱特性，可以在调制器中加入预均衡网络对频谱进行预畸变。
The foundation is given to design the good external modulator optical transmitter by calculating CSO.
为设计性能良好的外调制光发射机提供了依据。
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