请问HP 8592A中输出100MHz的稳定信号但两侧的频率漂移为3 KHz是正常情况吗？

嗨 - 8592A频谱分析仪是在20世纪80年代制造的，具有自由运行的第一个L.O.，意味着它不会锁定任何参考。
这意味着L.O.
将漂移，这使得仪器的频率精度不是很好。
92A确实有一个名为Signal Track的功能，你可能觉得它很有用。
它用于将信号保持在屏幕的中心。
本质上，信号轨道执行连续峰值搜索，标记到中心频率，这将明显改变分析仪的中心频率作为第一个L.O.
漂移。
92A的频率精度规格至少为+/- 5 MHz，加上其他不确定性，如量程的2％等。典型仪器性能优于大多数情况，但安捷伦仅保证公布的规格。
问候 -



     以下为原文

  Hi -

The 8592A spectrum analyzer, which was manufactured in the 1980’s, has a free running 1st L.O., meaning it is not phase locked to any reference.  What this means is the L.O. will drift and that makes the frequency accuracy of the instrument to not be very good.  The 92A did have a feature called Signal Track that you may find useful.  It is used to keep the signal at the center of the screen.  Essentially, the signal track performs a continuous peak search, marker to center frequency, which will obviously change the center frequency of the analyzer as the 1st L.O. drifts.  The frequency accuracy specification for the 92A was at least +/-5 MHz, plus other uncertainties like 2% of span, etc..  Typical instrument performance was better than this is most cases, but Agilent only warranted the published specification. 

Regards -