At last, an intelligentized testing instrument for electric wire highfrequencycarrier wave channels is developed.
在此基础上，研制开发出了一套智能化电力线高频载波通道测试装置。
2
Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal.
无论是雷达、电子对抗，还是通信、仪器设备等都需要高稳定度的频率源，以保证载波信号的质量。
3
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.