MXG相位噪声损伤使得水平下降

您好RF测试仪，我对您使用的型号没有经验。
你测量宽带还是窄带？
我认为测量宽带的功率是相同的。
对于AM噪声或衰落，峰值功率大部分是恒定的，但平均功率可能会下降很多。



     以下为原文

  Hi RF Tester,

I have no experience with the model you use.
Do you measure wide or narrow band?
I would assume that measuring wide band the power is the same.
For AM noise or fading the peak power is mostly constant but average power can drop quite a bit.

嗨博，谢谢你的回复。
我正在生成单个QAM，并且我测量的是~6 MHz BW。
信号发生器由PXB控制。
如果在波形播放时打开信号发生器的相位噪声损伤选项，则电平下降3dB。
如果波形停止，相位噪声开启，波形重新启动，则水平保持不变。
它是波形的停止和启动，以避免不方便的电平变化。
唐（来自加拿大）



     以下为原文

  Hi Bo, thanks for your reply.
I am generating a single QAM, and that ~ 6 MHz BW is what I was measuring. The signal generator is being controlled by a PXB. If the signal generator's phase noise impairment option is turned on while the waveform is playing the level drops 3 dB. If the waveform is stopped, the phase noise turned on, and the waveforem restarted, the level remains unchanged. It is the stopping and starting of the waveform to avoid the level change that is inconvenient.
Don (from Canada)