S21安装软件A.07.29后灵敏度低

安德鲁，你在使用标准化校准（校准/ 5 - >响应校准 - >标准化）吗？
如果是这样，你可以尝试不做那个cal，而是通过将规范化跟踪存储到内存（Trace / 6 - > Math and Memory - > Data-> Mem），然后打开Data / Memory来规范化
测量？
问候，威尔



     以下为原文

  Andrew,
  Are you using a Normalization cal (Cal/5 -> Response Cal -> Normalization)?  If so, can you try NOT doing that cal, but instead do this manually by storing your normalization trace to memory (Trace/6 -> Math and Memory -> Data->Mem), and then turning on Data / Memory to normalize your measurement?

Regards,
Wil

你好，谢谢你的快速回复。
你猜对了我使用的标准化校正是正确的。
我尝试重新加载新的A.07.29软件并按照您的建议使用跟踪方法，但没有成功。
无法使用可用的矢量测量（阻抗）。
我不得不重新安装A.07.29软件。
我有N9916A的端口1，具有良好的线性20dB增益放大器驱动桥接，桥接反射端口连接到20dB衰减器，驱动分析仪的端口2。
使用旧软件，这与标准化校准相当好。
使用新软件和相同的设置，史密斯圆图只是噪音（类似于移除20dB放大器）。
使用“快速校准”和“增强型正向响应”，然后跳过校准的“负载测量”部分，我能够使用A.07.29软件获得较差的结果。
我确信新软件中S21的校准程序有些奇怪。
希望其他人也可以看到这个问题。
谢谢，安德鲁



     以下为原文

  Hello Will, thanks your prompt reply. You guessed correct with the normalization cal I was using. I tried reloading the new A.07.29 software and using the trace method as you suggested but without success. No useable vector measurements (impedance) possible. I have had to re-install the A.07.29 software.

I have Port 1 of the N9916A with a good linear 20dB gain amp driving a bridge with the bridge reflected port connected thru a 20dB attenuator driving Port 2 of the Analyser. With the old software this works reasonably well with the normalization cal. With the new software and  the same setup the Smith chart is nothing but noise (similar to removing the 20dB amp).

I was able to get inferior results with the A.07.29 software using the 'Quick Cal' and the  'Enhanced Forward Response' then skipping the 'Load Measurement' section of the cal. I am sure there is something odd with the calibration procedure for S21 in the new software. Hopefully others may see this problem too.

Thanks,
Andrew

您好Wil，谢谢您的及时回复。
你猜对了我使用的标准化校正是正确的。
我尝试重新加载新的A.07.29软件并按照您的建议使用跟踪方法，但没有成功。
无法使用可用的矢量测量（阻抗）。
+我不得不重新安装A.07.27软件。+我有N9916A的端口1，具有良好的线性20dB增益放大器驱动桥接，桥接反射端口连接到20dB衰减器，驱动分析仪的端口2。
使用旧软件，这与标准化校准相当好。
使用新软件和相同的设置，史密斯圆图只是噪音（类似于去除20dB放大器的效果）。
使用“快速校准”和“增强型正向响应”，然后跳过校准的“负载测量”部分，我能够使用A.07.29软件获得较差的结果。
我确信新软件中S21的校准程序有些奇怪。
希望其他人可能会看到此问题，您将能够更正或提供软件切换选择。
谢谢，AndrewEdited：Andrew001于2014年3月2日上午2:50



     以下为原文

  Hello Wil, thanks your prompt reply. You guessed correct with the normalization cal I was using. I tried reloading the new A.07.29 software and using the trace method as you suggested but without success. No useable vector measurements (impedance) possible. +I have had to re-install the A.07.27 software.+

I have Port 1 of the N9916A with a good linear 20dB gain amp driving a bridge with the bridge reflected port connected thru a 20dB attenuator driving Port 2 of the Analyser. With the old software this works reasonably well with the normalization cal. With the new software and the same setup the Smith chart is nothing but noise (similar effect to removing the 20dB amp).

I was able to get inferior results with the A.07.29 software using the 'Quick Cal' and the 'Enhanced Forward Response' then skipping the 'Load Measurement' section of the cal. I am sure there is something odd with the calibration procedure for S21 in the new software. Hopefully others may see this problem and you will be able to correct or provide a software switch to choose.

Thanks,
Andrew

Edited by: Andrew001 on Mar 2, 2014 2:50 AM

安德鲁，我通过私信发送了修改后的解决方法程序。
请让我知道结果如何。
问候，威尔



     以下为原文

  Andrew,
  I've sent you a revised workaround procedure via private message.  Please let me know how that results. 

Regards,
Wil

Wil，已尝试过您建议的解决方法，我可以确认您已正确识别该问题。
此外，结果比07_27更好，所以我尝试使用软件07_06并获得与使用您的解决方法时相同的良好结果。
希望你现在可以解决这个问题。
谢谢，安德鲁



     以下为原文

  Wil,

Have tried the workaround you suggested and I can confirm that you have correctly identified the issue.

Furthermore the results were better than I was getting with 07_27, so I tried using software 07_06 and got the same good results as when using your workaround. 

Hope you can now resolve the issue.

Thanks,
Andrew