数字电视分量信号发生器的校准

Calibration of Digital Television Component Signal Generator

数字电视分量信号发生器为数字视频产品的检验、检测和调试提供标准信号,通过校准实现数字电视分量信号发生器的量值溯源,为科研开发和生产调试提供保障。通过研究数字电视分量信号的原理,提出了数字电视分量信号发生器的校准参数:视频幅度、频率响应、通道延迟、亮度信号波形失真、噪声和行同步定时等,规定了校准方法;同时提出了校准过程中的注意事项。

A digital television component signal generator provides standard signal for the inspec- tion, testing and debugging of digital video products. The measurement traceability of the digital television component signal generator can be assured by calibration, which is very important for the development and production debugging. Based on the principle of digital television component signal, the digital television component signal generator calibration parameters are presented, in-cluding video amplitude, frequency response, channel delay, lunfinance signal waveform distor-tion, noise and line synchronization timing. The calibration methods are provided and the issues that should be considered during the calibration are discussed.