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内部与外部10 MHz参考

嗨,请问我想了解外部到内部10 MHz参考的切换如何在E4438C设备中工作。
我们有一些带有E4438C信号发生器和N9020A MXA的测试站。
我们使用由GPS接收器生成的10 MHz参考信号。
我们用该信号馈送ESG“10 MHz输入”,然后将其“10 MHz输出”连接到MXA的“Ext Ref In”输入。
当我们从GPS接收器中丢弃参考信号时,ESG会自动切换到内部参考,然后用它输入MXA吗?
那么他们至少在同一时间基地运行?
这是使用这种配置(菊花链)而不是使用来自GPS接收器的独立电缆或T接头在两台设备之间分配相同信号的优势吗?
感谢和问候,RodEdited:rodd于2016年3月15日下午1:43

以上来自于谷歌翻译


     以下为原文

  Hi,

Please I would like to understand how does the switching of the external to internal 10 MHz reference works in a E4438C equipment.

We have some test stations with a E4438C signal generator and a N9020A MXA. We use a 10 MHz reference signal generated by a GPS receiver. We feed the ESG "10 MHz Input" with that signal and then connect its "10 MHz Output" to the MXA's "Ext Ref In" input.

When we have a drop in the reference signal from the GPS receiver, will the ESG automatically switch to the internal reference and then feed the MXA with it? So that they at least are running in the same time base? Would that be the advantage of using this configuration (daisy chain) instead of using independent cables coming from the GPS receiver or a T connector splitting the same signal bewteen the two equipment?

Thanks and regards,
Rod

Edited by: rodsd on Mar 15, 2016 1:43 PM  

回帖(1)

李星童

2018-9-11 16:40:08
是的,如果外部参考被丢弃到ESG,则内部参考被接入并将输出到您的MXA。
我不记得MXA是否只是像PSA一样手动切换,但如果是,那么如果您的测试允许非GPS时基,那么您当前的配置将是一个优势。

以上来自于谷歌翻译


     以下为原文

  Yes, if the external reference is dropped to the ESG the internal reference is switched in and will be outputted to your MXA. I don't remember if the MXA is only manually switched like the PSA, but if it is then your current configuration would be an advantage if your testing allows for a non-GPS timebase.
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