有什么方法可以在2端口校准后停止8720D测量S12和S22？

您可以以编程方式读出错误条款，然后将它们加载到1端口cal中。



     以下为原文

  You could programatically read out the error terms and then load them into a 1 port cal.

> {quote：title = Dr_joel写道：} {quote}>您可以以编程方式读出错误条款，然后将它们加载到1端口cal中。
谢谢乔尔。
对于我想要做的事情来说，我觉得这是很常见的事情。
但我会研究这个，因为做另一次校准有点乏味。
戴夫



     以下为原文

  > {quote:title=Dr_joel wrote:}{quote}
> You could programatically read out the error terms and then load them into a 1 port cal.

Thank you Joel. Sounds a lot of work for what I would have assumed was quite a common thing for one to want to do. But I will look into this, as doing another calibration is a bit tedious. 

Dave

如果它让你感觉更好，即使在最现代的VNA中，你仍然需要一些远程编程干预来将2端口校准转换为1端口校正（这样就不需要反向扫描）。
但你绝对正确;
当选定的校准中包含更高阶的误差项时，告诉分析仪对测量应用低阶校正应该是明智之举。



     以下为原文

  if it makes you feel any better, even in the most modern VNA, you still need a little bit of remote programming intervention to turn a 2-port calibration into a 1-port correction (so that the reverse sweep is not required).

but you are absolutely right; it should be a no-brainer to tell the analyzer to apply a lower order correction to a measurement when the selected calibration has a higher order set of error terms in it.

> {quote：title = daras写道：} {quote}>如果它让你感觉更好，即使在最现代的VNA中，你还需要一些远程编程干预才能将2端口校准变成1-
端口校正（因此不需要反向扫描）。
我想这确实让我觉得好一点。
事实上，在Joel的回答之后，我很想写一些类似+“我假设如果我有一个后来的VNA，这样就没有问题。”+我真的认为这将是非常基本的东西。
我不敢相信我是第一个不受欢迎的人，1端口测量需要两倍的时间，只是因为我做了2端口校准。
>但你绝对正确;
当选定的校准中包含更高阶的误差项时，告诉分析仪对测量应用低阶校正应该是明智之举。
也许您可以考虑将其包括在后续仪器的固件更新中 - 当然，8720D固件不可能更新。
我必须承认，我经常让VNA只显示S11，但是根据需要通过GPIB读出所有4个S参数，所以任何这样的改变都应该基于用户设置“忽略反向扫描”或“
省略前向扫描“，而不是基于仪器前面板显示的内容。
戴夫



     以下为原文

  > {quote:title=daras wrote:}{quote}
> if it makes you feel any better, even in the most modern VNA, you still need a little bit of remote programming intervention to turn a 2-port calibration into a 1-port correction (so that the reverse sweep is not required).

I guess it does make me feel a bit better. 

In fact I was tempted to write after Joel's response something like 

+"I assume if I had a later VNA there would be no problem doing this".+ 

I really thought it would be something quite basic. I can't believe I'm the first person to be irretated that 1 port measurements are taking twice as long as need be, just because I have done a 2-port calibration. 

> but you are absolutely right; it should be a no-brainer to tell the analyzer to apply a lower order correction to a measurement when the selected calibration has a higher order set of error terms in it.

Perhaps it is something you could consider including in firmware updates for later instruments - of course there is no chance of the 8720D firmware being updated. 

I must admit, I often have the VNA displaying just S11, but read out all 4 S parameters via GPIB as I need them, so any such change should really be based on the user setting a tick box for "Omit reverse sweep" or "Omit forward sweep", rather than based on what the instrument's front panel is displaying. 

Dave

> {quote：title = drkirkby写道：} {quote}>也许你可以考虑将其包括在以后仪器的固件更新中 - 当然没有机会更新8720D固件。
>这绝对是我们的计划;
只需设置正确的优先级并排列资源即可。
> {quote：title = drkirkby写道：} {quote}>我必须承认，我经常让VNA只显示S11，但是在我需要时通过GPIB读出所有4个S参数，所以任何这样的改变都应该基于
用户设置“省略反向扫描”或“省略向前扫描”的复选框，而不是根据仪器前面板显示的内容。
>是的，这将被设计为“选择加入”选项。
事实上，对于那些不想测量混频器反向转换损耗/增益的人来说，我们的标量混频器校准允许折旧非常相似。



     以下为原文

  > {quote:title=drkirkby wrote:}{quote}
> Perhaps it is something you could consider including in firmware updates for later instruments - of course there is no chance of the 8720D firmware being updated. 
> 

this is definitely in our plans; it is just a matter of setting the right priority and lining up the resources to do it.

> {quote:title=drkirkby wrote:}{quote}
> I must admit, I often have the VNA displaying just S11, but read out all 4 S parameters via GPIB as I need them, so any such change should really be based on the user setting a tick box for "Omit reverse sweep" or "Omit forward sweep", rather than based on what the instrument's front panel is displaying. 
> 

yes this will be designed as an "Opt In" option.  we have in fact done something very similar in allowing depreciation for our Scalar Mixer Calibration for those who do not want to measure the reverse conversion loss/gain of a mixer.