85021-60001适用于VNA的校准标准吗？

嗨Kirkby博士，感谢您的回复！
是的，我在ebay找到了一个并且认为我可能会切角，至少从我的校准工具开支。
但是，我猜你是对的，最好找你提到的合适的开放标准并等待可接受的价格。
我后来发现HP 85031B 7mm校准套件包括85031-60001看起来非常相似。
该套件应该可以达到6 GHz，这是我目前的限制。
同样在这个套件中的909F具有最低5 dB的最小回波损耗和高达6 GHz的46 dB，我发现它比我的任何设计都要好，特别是宽带。
我刚买了一个这样的909F。
确实很棒！
是的，我很开心。
看起来像新的。
从长远来看，泡沫填充似乎是有问题的。
我已经看到它与昂贵的HP校准套件和较便宜的天线阻抗桥接套件一起使用，包括Marconi定义的不匹配负载。
看到这个导致了一个问题，即使用什么来避免未来的混乱。
我的清洁工作并不是那么成功，所以在装载的“熔化”泡沫之后仍然存在“硬胶”，我不知道如何移除而不会冒失去功能。
另一个问题是具有校准系数的磁带。
今天怎么读？
自1989年搬到芬兰以来，我还没有见过这样的录音机。



     以下为原文

  Hi Dr Kirkby and thanks for a long interesting reply!

Yes, I found one at ebay and thought I could maybe cut a corner, at least from my calibration tools expenses.
However, I guess you are right and it's better to look for the decent open standard you mention and wait for an acceptable price.
I later found that the HP 85031B 7mm Cal Kit includes the 85031-60001 looking very similar.
That kit should be fine up to 6 GHz, my current limit. The 909F, also in this kit, has min return loss 52 dB up to 5 and 46 dB up to 6 GHz that I find way better than any of my designs, specially wide band. I just bought one such 909F.

Nice work indeed!
Yes, I'm amused. Looks like new.
That foam padding seems to be problematic in the long run. I have seen it both at work with expensive HP calibration kits and with a less expensive antenna impedance bridge kit including defined mismatch loads from Marconi. Seeing this leads to the question, what to use instead to avoid a future mess.
I was not so successful in my cleaning work so there is still "hard glue" after the "melted" foam at the loads that I don't know how to remove without risking the functionality.
One other issue is the tape with the calibration coefficients.
How to read it today?
I haven't seen such a tape reader since I moved to Finland in 1989.

> {quote：title =芬兰的Bo写道：} {quote}>嗨Kirkby医生，谢谢你的回复！
没问题。
>是的，我在ebay找到了一个并且认为我可能会切角，至少从我的校准工具费用开始。
但是可以非常便宜地获得APC7试剂盒。
它是一个可爱的连接器，我觉得很遗憾没有人制作它的小版本，但这些天连接器几乎没用。
>但是，我猜你是对的，最好找你提到的体面的开放标准，等待可接受的价格。
>我后来发现HP 85031B 7mm校准套件包括85031-60001看起来非常相似。
我怀疑85031-60001和85021-60001是一样的。
在网上看，我可以看到85031的短路偏移延迟为0，85021-60001开路/短路似乎没有。
85031B中的开路系数为C0 = 92.85 C1 = 0 C2 = 7.2 C3 = 4.3随着频率为92.85 fF，随频率上升，我认为这远远超过了截止波形以外的波导。
85031-60001的边缘电容略高于85050B / C / D套件中的开路电压，我可以告诉你那里有电介质。
我知道我对简单开放的测量并不完美，但我不是10 fF。
>该套件应该可以达到6 GHz，这是我目前的限制。
同样在这个套件中的909F具有最低5dB的最小回波损耗和高达6GHz的46dB，我发现它比我的任何设计都要好，特别是宽带。
我刚买了一个这样的909F。
909F是一个很好的负载。
>确实很好的工作！
>是的，我很开心。
看起来像新的。
泡沫是从安捷伦购买的新产品。
事实上，我买了几个其他套件来完成套件，交换件。
事实上，我卖的部件比我买的其中一个套件更多。
我想我买了一个250美元的套件仅仅是因为我想要连接器量具，然后以超过250美元的价格出售其他零件!!
>从长远来看，泡沫填充似乎有问题。
我已经看到它与昂贵的HP校准套件和较便宜的天线阻抗桥接套件一起使用，包括Marconi定义的不匹配负载。
看到这个导致了一个问题，即使用什么来避免未来的混乱。
是的，这是有问题的。
我实际上是建造低成本的校准套件（不适用于APC7），并使用泡沫。
我试图从泡沫供应商处获得预期寿命数据，但从未成功过。
>我的清洁工作并不是那么成功，因此在负载处“熔化”的泡沫之后仍然存在“硬胶”，我不知道如何在不冒风险的情况下移除。
很难删除。
它微溶于丙酮，但丙酮会破坏其他塑料，所以你不能在含有塑料的任何东西上使用它。
我有一部分来自85052B 3.5毫米套件，泡沫我无法移除。
我在eBay上出售“备件或维修” - 中国有人买了它们。
>另一个问题是带有校准系数的磁带。
>今天如何阅读？
我不担心。
所有套件的系数都在网络上或VNA的固件中。
我的8720D固件具有85050系列系数，而我的8753具有85031系列。
如果我想在8753上使用85050B，我只需从Keysight网站获取系数，并将它们定义为用户工具包。
>自1989年我搬到芬兰以来，我还没有见过这样的磁带阅读器。我想也许有些8510系列乐器有一个磁带机，但我认为校准套件没有必要。
戴夫



     以下为原文

  > {quote:title=Bo in Finland wrote:}{quote}
> Hi Dr Kirkby and thanks for a long interesting reply!

No problem. 

> Yes, I found one at ebay and thought I could maybe cut a corner, at least from my calibration tools expenses.

But it is possible to get APC7 kits quite cheaply. It is a lovely connector, and I feel it is a shame nobody ever made a smaller version of it, but the connector has little use these days. 

> However, I guess you are right and it's better to look for the decent open standard you mention and wait for an acceptable price.
> I later found that the HP 85031B 7mm Cal Kit includes the 85031-60001 looking very similar.

I doubt that the 85031-60001 is the same as the 85021-60001. Looking on the web, I can see the 85031 has an offset delay of 0 for the short, which the 85021-60001 open/short does not appear to have. The open in the 85031B has coefficients of 

C0=92.85
C1=0
C2=7.2
C3=4.3

With the fringe capacitance being 92.85 fF, rising with frequency, I believe that is far more than you would get with a just a waveguide beyond cutoff. That fringing capacitance of the 85031-60001 is slightly higher than the open in the 85050B/C/D kits, and I can tell you that has a dielectric there. I know my measurements of the simple open are not perfect, but I am not 10 fF off. 

> That kit should be fine up to 6 GHz, my current limit. The 909F, also in this kit, has min return loss 52 dB up to 5 and 46 dB up to 6 GHz that I find way better than any of my designs, specially wide band. I just bought one such 909F.

The 909F is a good load. 

> Nice work indeed!
> Yes, I'm amused. Looks like new.

The foam was purchased new from Agilent. I bought a couple of other kits to complete that kit in fact, swapping pieces around. In fact, I sold the parts for more than what I bought one of the kits for. I think I bought one kit for $250 just because I wanted the connector gage, then sold the other parts for more than $250 !! 

> That foam padding seems to be problematic in the long run. I have seen it both at work with expensive HP calibration kits and with a less expensive antenna impedance bridge kit including defined mismatch loads from Marconi. Seeing this leads to the question, what to use instead to avoid a future mess.

Yes, it is problematic. I actually build low-cost cal kits (not for APC7), and use foam. I have tried to get life-expectancy data from the foam supplier, but have never succeeded. 

> I was not so successful in my cleaning work so there is still "hard glue" after the "melted" foam at the loads that I don't know how to remove without risking the functionality.

It is very hard to remove. It is slightly soluble in acetone, but acetone destroys other plastics, so you can't use it on anything with plastic in it. 

I had some part from a 85052B 3.5 mm kit with foam I could not remove. I sold them on eBay for "spares or repair" - someone in China bought them. 

> One other issue is the tape with the calibration coefficients.
> How to read it today?

I would not worry about it. The coefficients for all the kits are on the web, or in the firmware of the VNA. My 8720D firmware has the 85050 series coefficients and my 8753 has the 85031 series. If I wanted to use the 85050B on the 8753, I would just get the coefficients from the Keysight web site, and define them as a user kit. 

> I haven't seen such a tape reader since I moved to Finland in 1989.

I think maybe some of the 8510 series instruments have a tape drive, but I don't see any need for it for a calibration kit. 

Dave

戴夫，我现在有确凿的证据证明你是个小恶魔！
:-)



     以下为原文

  Dave, I now have hard evidence of what a little devil you are! :-)

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     以下为原文

  p.s. don't reply if you don't want to spoil it!

恭喜戴夫，我想我的＃帖子我只有一半的小恶魔，所以我必须努力工作，否则继续制作像这样的文章:-)



     以下为原文

  Congrats Dave, I guess with my # of posts I'm only half as much a little devil so I'll have to work a little harder or else keep making frivilous posts like this one :-)

有一段时间，大卫和我在一起......但他必须要比我说得多。
我放弃了试图与他竞争。



     以下为原文

  For awhile, David and I were neck and neck...but he must have had much more to say than me.  I gave up trying to compete with him.