用CCANTENNA-DK校准N9923A？

> {quote：title = ktown写道：} {quote}>我们最近购买了N9923A用于阻抗匹配，但遗憾的是支持的校准套件很难获得或昂贵。
给我发一封私人电子邮件给drkirkby@gmail.com - 我可以帮助你。
>是否可以使用廉价的O / S / L板来校准N9923A，例如TI的CCANTENNA-DK套件中的那些，这很容易订购，价格非常适中49美元？
http://www.ti.com/tool/cc-antenna-dk我认为你会被困住，因为手册中没有给出数据。
http://www.ti.com/lit/an/swra328/swra328.pdf似乎认为它们是“短路”和“打开”，但如果不知道偏移延迟和边缘电容系数，就不能使用它们。
>我尝试使用此套件中的三个O / S / L板进行校准，并在校准向导中选择3.5mm连接器，但结果是在地图上测量868MHz的已知良好天线（来自同一套件），可能是因为
我们没有在向导中选择正确的校准套件。
看看PCB，看起来在开路或短路之前有一条相当长的传输线。
因此，偏移延迟将比安捷伦3.5 mm校准套件中的延迟更长，开启时为29.243 ps，短路为31.808 ps。
这些TI器件看起来要长得多，但任何人都猜测它们是什么。
>有没有办法使用这些板（或类似的）与N9923A进行校准？
正如我所说，给我发一封电子邮件。
戴夫



     以下为原文

  > {quote:title=ktown wrote:}{quote}
> We've recently purchased an N9923A for impedance matching on   but unfortunately the supported calibration kits are all quite difficult to source or expensive.  

Drop me a private email to drkirkby@gmail.com - I can help you there. 

> Is it possible to calibrate the N9923A using inexpensive O/S/L boards such as those present in the CCANTENNA-DK kit from TI, which is easy to order and available for a very modest $49? http://www.ti.com/tool/cc-antenna-dk

I think you will be stuck, as the data on them is not given in the manual. 

http://www.ti.com/lit/an/swra328/swra328.pdf

It seems to consider them "shorts" and "opens", but without knowing the offset delays and fringing capacitance coefficients, you can't use them. 
 
> I tried calibrating using the three O/S/L boards in this kit and selecting 3.5mm connectors in the calibration wizard, but the results are all over the map measuring a known good antenna at 868MHz (from the same kit), presumably because we're not selecting the correct cal kit in the wizard.

Looking at the PCB, it seems there is a fairly lengthy transmission line before the open or short. So the offset delays are going to be much longer than those in the Agilent 3.5 mm calibration kits, which are 29.243 ps for the opens and 31.808 ps for the shorts. Those TI devices look to be much longer, but it is anyone's guess what they are. 

> Is there any way to use these boards (or something similar) with the N9923A for calibration?

As I say, drop me an email. 

Dave

如果您可以直接（或尽可能直接）将DUT连接到N9923A的测试端口，则可以考虑另一种方法。
N9923A配备“CalReady”，这是一款适合测试端口的工厂，非常好。
现在，如果添加跨接电缆或适配器，那么当然需要校准，特别是如果延迟是您正在测量的参数。
如果你只是看着幅度，如果你使用匹配良好的适配器或电缆，那么你可以在没有校准的情况下离开。
你有QuickCal选项吗？
这不需要一个校准套件（可能只是一个负载），也可能有所帮助。
或者，您可以使用自己的标准定义自己的校准套件，然后使用Data Link软件将该套件上传到FieldFox。
如果您要使用自己的标准，那么您需要定义自己的套件。
Afsi Moaveni



     以下为原文

  An alternative to consider is simply not cal'ing, if you can connect your DUT directly (or as directly as possible) to N9923A's test ports. N9923A comes with "CalReady", a factory cal up to the test ports that is quite good. Now if you add jumper cables or adapters, then of course you need to calibrate, especially if delay is a parameter you are measuring. If you're just looking at magnitude, if you use adapters or cables with excellent match, maybe then you can get away without a cal.

Do you have the QuickCal option? that does not need a cal kit (maybe just a load) and can also be helpful.

Alternatively, you can define your own cal kit with your own standards and then upload that kit to FieldFox using Data Link software.  If you're going to use your own standards, then you need to define your own kit.

Afsi Moaveni

感谢有关TI主板的确认。
我没有QuickCal，因为它显然不适合我通常使用的SMA连接器，而且一些4合1的cal套件价格相同，在有限的预算下似乎是更好的选择。
但它甚至没有想到只用一个质量好的N型到SMA适配器和CalReady直接连接到VNA，这比我在5周内等待校准套件的电缆要少得多。
令人遗憾的是，TI并未提供这些CCANTENNA-DK套件的时序延迟，即使它们可能永远不会像专用的校准套件一样好。
但是大多数校准套件价格过高，以至于低成本的临时解决方案对于工具预算有限的许多小公司都是有用的（像我这样的人可能会考虑N9923A）。



     以下为原文

  Thanks for the confirmation about the TI boards.  I don't have QuickCal since apparently it's not appropriate for SMA connectors, which is what I typically use, and some of the 4-in-1 cal kits are the same price and seemed like a better choice on a limited budget.  But it didn't even cross my mind to connect directly to the VNA with just a good quality Type N to SMA adapter and CalReady, which will be far less intrusive than the cable while I'm waiting for the cal kit in 5 weeks.

It's a shame TI doesn't provide the timing delays on those CCANTENNA-DK kits, though, even if they'll probably never be as good as a dedicated cal kit.  But most cal kits are so prohibitively priced that a low cost interim solution would be useful to a lot of smaller companies with limited tools budgets (who, like me, would probably consider the N9923A).