答：这取决于信号发生器。
在许多型号上，PLL带宽设计为无法调整。
但是某些型号（例如PSG）确实允许用户为参考振荡器选择五种不同带宽中的一种。
此外，带选件UNY的PSG单元在合成器部分提供两个PLL带宽。
这使用户能够针对150 kHz的偏移优化相位噪声。
以上来自于谷歌翻译
以下为原文
Answer: It depends on the signal generator. On many models, the PLL bandwidth is designed in and cannot be adjusted. But some models, such as the PSG, do allow the user to select one of five different bandwidths for the reference oscillator. Additionally, PSG units with option UNY offer two PLL bandwidths in the synthesizer section. This enables the user to optimize phase noise for offsets 150 kHz.
答：这取决于信号发生器。
在许多型号上，PLL带宽设计为无法调整。
但是某些型号（例如PSG）确实允许用户为参考振荡器选择五种不同带宽中的一种。
此外，带选件UNY的PSG单元在合成器部分提供两个PLL带宽。
这使用户能够针对150 kHz的偏移优化相位噪声。
以上来自于谷歌翻译
以下为原文
Answer: It depends on the signal generator. On many models, the PLL bandwidth is designed in and cannot be adjusted. But some models, such as the PSG, do allow the user to select one of five different bandwidths for the reference oscillator. Additionally, PSG units with option UNY offer two PLL bandwidths in the synthesizer section. This enables the user to optimize phase noise for offsets 150 kHz.
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