There are two technique problems for Terrestrial digital TV transmitter: one is the channel coding modulation technique whch is dependent of TV system;

数字地面电视发射机有两大技术难点：一是与制式有关的信道编码调制技术；

youdao

For high requirement of transmitting carrier in TV transmitter, frequency synthesizer as one of the most important parts in transmitting system is researched in this paper.

就电视发射机对发射载波的高要求，论文对电视发射系统中关键部件之一的频率合成器进行了研究。

youdao

In the fourth chapter, it illuminates the theory of TV carrier frequency precision control in TV transmitter, the design scheme and system configuration are also introduced.

第四章阐明了电视发射机中电视载频精密偏置的原理，介绍了具体设计方案以及系统框图。

youdao

The BBC said a transmitter fault had affected TV and radio signals.

BBC: Snow storms: Thousands without power in Northern Ireland

The rest of the Yorkshire TV region will follow the same two stage process, carried out transmitter by transmitter, until 21 September.

BBC: Digital Switchover