PXA噪声系数测量在上变频器上扫描RF和Swep LO？

嗨 - 我们需要更多信息。
当你说“传统上我们测量了我们的上变频器噪声系数......”你传统上用什么仪器来做这个？
你是怎么设置这个乐器的？
对于PXA测量，在N9069A噪声系数模式下，我怀疑你会做类似的事情：模式设置DUT设置在设置屏幕上，在DUT字段中，使用下拉并选择Upconv。
在LO频率模式下：选择扫描频率模式：应扫描现在您可以设置RF的开始和停止频率以及LO的开始和停止频率。
我不明白你的意思“（如果在PXA发言）”。
问候 -



     以下为原文

  Hi -

We need more information.

When you say “Traditionally we measured our upconverter noise figure…”  What instrument did you use to traditionally do this? How did you set up this instrument?

For the PXA measurement, in the N9069A Noise Figure mode, I would suspect you would do something like:
Mode Setup
     DUT Setup
         On the setup screen, in the DUT field, use pull down and select Upconv.
                 In the LO Freq Mode: select Swept
                 Freq Mode: should be Swept  
     Now you can set the start and stop frequencies of the RF and Start and Stop frequencies of the LO. 

I don’t understand what you mean by “(IF in PXA speak)”.

Regards -

嗨Tabbott，如果我能解释得更清楚会更好。
问题的简化版本是，为什么PXA在上变频器噪声系数测量模式下固定DUT输入频率的同时不能同时扫描LO和DUT输出频率？
我从PXA应用笔记之一复制并粘贴了一些段落来解释我的意思是'PXA说'。
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-------------------'下变频器'表示输出频率（IF）低于输入（RF）。
“上变频器”表示输出频率（IF）高于输入（RF）。
注意这是此分析器中使用的约定。
一些工程术语对上变频器使用反转术语------------------------------------------
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- - - - - - - - - - - - - - 谢谢



     以下为原文

  Hi Tabbott,

It would have been better if I could explain clearer. The simplfied version of question would be,

Why PXA cannot sweep both LO and DUT output frequency at the same time while fixing DUT input frequency when it is in upconverter noise figure measurement mode?

I copy and pasted some paragraphs from one of the PXA app note to explain what I was meaning by 'PXA speak'.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
‘Downconverter’ means that the output frequency, (IF) is lower than the input, (RF).
‘Upconverter’ means that the output frequency, (IF) is higher than the input (RF).
NOTE This is the convention used in this analyzer. Some engineering terms use reversed terms for upconverters
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Thanks

嗨 - 此时噪声系数应用程序仅支持在DUT设置为上变频器时测量固定IF。
可以扫描DUT LO，但应用程序不会调谐频谱分析仪以允许“扫描”IF测量。
由于您的反馈，我们将来会考虑这样的改进。
感谢您解释如何执行测量。
问候 -



     以下为原文

  Hi -

At this time the Noise Figure application only supports measuring a fixed IF when the DUT is set to upconverter. 
The DUT LO can be swept, but the application does not tune the spectrum analyzer to allow a “swept” IF measurement.

Due to your feedback, we will consider such an enhancement in the future.

Thanks for explaining how you would like to perform your measurement.

Regards -

仅供参考：PNA-X支持具有扫描或固定输入，输出或LO的上变频器或下变频器的NF测量。



     以下为原文

  Just FYI:  PNA-X supports NF measurements for up or down converters with swept or fixed Inputs, Outputs, or LOs.