无论如何要验证Fieldfox N9912A

如果你看看我的书的第3.9节，http：//www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html，它有大约16页描述如何使用航空公司确定残差，第3.10节描述了如何
计算这些残差的不确定性。
不像运行PNA验证那样方便（这一切都是为你完成的），但也不是非常困难。



     以下为原文

  If you look at section 3.9 of my book, http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html , it has about 16 pages describing how to determine the residuals using an airline, and section 3.10 describes how to compute the uncertainties from these residuals.

Not as convenient as running the PNA verification (where this is all done for you) but not terribly difficult either.

> {quote：title = Dr_joel写道：} {quote}>如果你看看我的书的第3.9节，http：//www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html，它有大约16页描述
如何使用航空公司确定残差，第3.10节描述了如何根据这些残差计算不确定性。
>>不像运行PNA验证那样方便（这一切都是为你完成的），但也不是非常困难。
我正在检查这些部分（很多信息），但我没有看到Fieldfox有任何关于准确性的规范，所以我如何比较计算结果。
我也可以用85054B校准Fieldfox，固定负载只能达到2 Ghz所以如何测量滑动负载？编辑：theamberco于2014年8月23日上午9:42



     以下为原文

  > {quote:title=Dr_joel wrote:}{quote}
> If you look at section 3.9 of my book, http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html , it has about 16 pages describing how to determine the residuals using an airline, and section 3.10 describes how to compute the uncertainties from these residuals.
> 
> Not as convenient as running the PNA verification (where this is all done for you) but not terribly difficult either.

I was checking those sections ( a lot of info) but I don't see the Fieldfox has any specification on accuracy so how can I compare the computed results.

Also can I calibrate the Fieldfox with the 85054B the fixed load only go to 2 Ghz so how can I measure the sliding load?

Edited by: theamberco on Aug 23, 2014 9:42 AM

我认为Fieldfox有一个VNA不确定性计算器，所以你可以为你的航空公司运行它，看看S21的不确定性是什么。
我们不直接指定准确度，因为它取决于您所测量的内容。
很多人希望我们说“S21精度为0.02 dB”，但如果您的设备有110 dB的损耗则不然。
因此，我们有一个VNA不确定度计算器，它告诉你一组给定的DUT特性（S11，S21，S22）的指定不确定度。
我不知道FF是否可以做滑动负载cal。
我猜其中一个FF家伙会参与其中。



     以下为原文

  I think there is a VNA uncertainty calculator for the Fieldfox, so you can run that for your airline and see what the S21 uncertainty is.

We don't spec accuracy directly, because it depends upon what you are measuring.  A lot of people want us to say "S21 accuracy is 0.02 dB" but that's not true if your device has 110 dB of loss.

Thus, we have a VNA uncertainty calculator and it tells you the specified uncertainty for a given set of DUT characteristics (S11, S21, S22).

I don't know if FF can do a sliding load cal.  I'm guessing one of the FF guys will chime in.

我们没有你想要的东西;
我猜的是类似于PNA的系统验证软件。
这就是我们所拥有的：带有N9910X-800三合一校准套件的S11不确定性图表，带有85054D校准套件的N9912A数据表S11不确定性图表的第10页，以及残余方向性等。
FieldFox数据表。
该图表适用于N9912A，但数据表仅适用于微波FieldFoxes。
请注意，这些图表基于覆盖因子1，这在手持设备中很常见。
台式机的覆盖系数通常为2. 85054B低频负载针对低频进行了优化，规格为2 GHz，但它可以为6 GHz提供可接受的性能。
FieldFox此时不支持滑动负载校准。
可以通过SCPI进行滑动负载校准，但我必须确认这一点。
如果你对控制SCPI感兴趣，请告诉我，我会调查它。
FieldFox不是不确定性计算器的一部分。



     以下为原文

  We do not quite have what you are looking for; I’m guessing something similar to the  PNA’s System Verification software.

This is what we do have:

S11 uncertainty charts with the N9910X-800 3-in-1 cal kit,  Page 10 of the N9912A Data Sheet

S11 uncertainty charts with 85054D cal kit, and residual directivity, etc. provided also  Page 10 of MW FieldFox Data Sheet. The chart is applicable to N9912A, although the data sheet is for the microwave FieldFoxes.

Please note that these charts are based on a coverage factor of 1, which is common in handhelds. Benchtops often use a coverage factor of 2. 

The 85054B low-band load is optimized for low-frequencies and specified to 2 GHz, but it may give you acceptable performance to 6 GHz. 

FieldFox does not support sliding load calibration at this point.  A sliding load cal may be possible via SCPI, but I would have to confirm that. If you are interested in a cal over SCPI, let me know and I will look into it.

FieldFox is not part of the uncertainty calculator.

谢谢，但不，因为我有快速校准。
如果用滑动负载进行校准，我希望能有更好的性能。



     以下为原文

  Thanks but no, because I do have quick cal. I was hoping to have better performance if calibrated with the sliding loads.