S param测试集中的机械与固态切换

我不清楚我的NA发生了什么。
它是8753E opt 11，使用87050A-H47 S参数测试装置（85047A的近亲）。
这个测试装置里面装有机械开关，我养成了在更换后按MEAS更新测量的习惯。
我不太明白为什么我需要这样做。
例如，假设我正在使用端口1测量放大器的输入阻抗。我选择S11测量类型和Smith格式，它看起来很平滑。
然后我意识到我忘了终止这个放大器的输出，所以我将端口2连接到输出。
然后，S11轨迹随着我的预期而变化，但是变得非常凹凸不平，几乎没有漩涡。
然后我按MEAS，测试装置继电器点击两次，现在S11很好，光滑，所有的肿块都消失了。
在我按下MEAS按钮之后，分析仪完成了什么？
当我想检查电路变化的影响但是我的双手被捆绑而且我不能按MEAS时，这就成了一个问题。
当我使用连续可变组件进行调整并希望在没有频繁按压MEAS的情况下查看分析仪屏幕上的更改时，尤其如此。
我可以通过安装固态开关来解决此问题吗？
除了开关本身之外，开关改装套件有什么特别之处吗？
例如，分析仪如何知道它是否安装了机械式或SS型开关？编辑：RadioRon于2012年10月4日下午1:03



     以下为原文

  I'm not clear on what is happening in my NA.  It is an 8753E opt 11 using 87050A-H47 S parameter test set ( a close relative of the 85047A).   This test set has the mechanical switch in it, and I have gotten into the habit of pressing MEAS to update my measurement after a change.  I don't quite understand exactly why I need to do this.    For example, let's say I'm measuring input impedance to an amplifier using port 1.  I select S11 measurement type and Smith format and it looks smooth to start with.  Then I realize I have forgotten to terminate the output of this amplifier, so I attach port 2 to the output.  The S11 locus then changes as I expect but has become quite lumpy with little swirls in it.  Then I press MEAS, the test set relay clicks twice and now the S11 is nice and smooth, all lumps are gone.  What exactly has the analyzer done after I pressed the MEAS button versus before I did so?     

This becomes a problem when I want to check the effect of a change to the circuit but both of my hands are tied up and I can't press MEAS.  This is especially true when I'm tuning with a continuously variable component and want to see the change on the analyzer screen without having the press MEAS frequently.  Can I resolve this issue by installing a solid state switch?  Is there anything special about the switch retrofit kit other than the switch itself?  For example, how does the analyzer know if it has a mechanical or SS switch installed?

Edited by: RadioRon on Oct 4, 2012 1:03 PM