如何为SMA设备最好地使用85052B 3.5 mm套件？

你好Dave，3.5mm校准套件中那些奇怪的发声电容条目是可配合连接器的并联电容模型，如SMA到3.5 mm和2.92 mm到3.5 mm。
8510具有连接器补偿功能，可将3.5mm校准测试端口转换为虚拟SMA测试端口。
参见Roger Pollard博士的论文“补偿技术改进了一系列机械兼容连接器的测量”，Microave Journal，1994年10月。只有8510具有这种连接器补偿功能。
PNA可以通过使用夹具去嵌入来执行类似的任务。
需要并联电容模型的S2P文件。
从论文中，应该能够计算错误适配器并将其保存为S2P文件。
肯



     以下为原文

  Hello Dave,

Those strange sounding capacitance entries in the 3.5mm cal kits are shunt capacitance models of matable connectors such as SMA to 3.5 mm and 2.92 mm to 3.5 mm.  The 8510 has a connector compensation function that converts a 3.5mm calibrated test port into a virtual SMA test port. See paper by Dr. Roger Pollard "Compensation Technique Improves Measurements For a Range of Mechanical Compatible Connectors",  Microave Journal Oct. 1994. Only the 8510 has this connector compensation function.  

The PNA can perform a similar task by using fixture de-embed.  An S2P file of the shunt capacitance model is required.  From the paper, one should be able to compute the error adapter and save it as an S2P file.

Ken

> {quote：title = drkirby写道：} {quote}>我的8720D的固件（版本7.74）使用了29.243 ps的偏移延迟，在该页面中它显示了29.2 ps的PNA，所以有一个>差别
43 fs，这是相当小的，虽然我很困惑为什么它存在。
无论如何，这是一个小问题。
我相信用于创建该表页面的电子表格会舍入该特定值;
在PNA对该套件的表示中，偏移延迟实际上精确到29.243 ps，就像在872x中一样。
最好的问候，布拉德



     以下为原文

  > {quote:title=drkirby wrote:}{quote}
> The firmware (version 7.74) for my 8720D use an offset delay of 29.243 ps, and in that page it shows 29.2 ps for the PNA, so there is a 
> difference of 43 fs, which is pretty small, although I'm puzzled why it exists. Anyway, that is a minor issue.

I believe the spreadsheet that was used to create that table page rounded that particular value; in the PNA's representation of that kit the offset delay is actually precisely 29.243 ps, just as in the 872x.

Best regards,
Brad

> {quote：title = bhokkan写道：} {quote} >> {quote：title = drkirby写道：} {quote} >>我8720D的固件（版本7.74）使用29.243 ps的偏移延迟，并在该页面中
对于PNA来说它显示29.2 ps，所以有43 fs的差异，这相当小，尽管我很困惑为什么它存在。
无论如何，这是一个小问题。
>>我相信用于创建该表页面的电子表格会舍入该特定值;
在PNA对该套件的表示中，偏移延迟实际上精确到29.243 ps，就像在872x中一样。
>>祝您好运，>布拉德谢谢布拉德。



     以下为原文

  > {quote:title=bhokkan wrote:}{quote}
> > {quote:title=drkirby wrote:}{quote}
> > The firmware (version 7.74) for my 8720D use an offset delay of 29.243 ps, and in that page it shows 29.2 ps for the PNA, so there is a 
> > difference of 43 fs, which is pretty small, although I'm puzzled why it exists. Anyway, that is a minor issue.
> 
> I believe the spreadsheet that was used to create that table page rounded that particular value; in the PNA's representation of that kit the offset delay is actually precisely 29.243 ps, just as in the 872x.
> 
> Best regards,
> Brad

Thank you Brad.

> {quote：title = kenwong写道：} {quote}> Hello Dave，>> 3.5mm校准套件中那些奇怪的发声电容条目是可配合连接器的并联电容模型，例如SMA到3.5 mm和2.92 mm到3.5 mm。
谢谢肯。
> 8510具有连接器补偿功能，可将3.5mm校准测试端口转换为虚拟SMA测试端口。
参见Roger Pollard博士的文章“补偿技术改进了一系列机械兼容连接器的测量”，Microwave Journal，1994年10月。我将看看那篇论文。
我以前见过你提到它，但我必须承认我没看过它。
我显然猜错了那些奇怪的价值！
戴夫



     以下为原文

  > {quote:title=kenwong wrote:}{quote}
> Hello Dave,
> 
> Those strange sounding capacitance entries in the 3.5mm cal kits are shunt capacitance models of matable connectors such as SMA to 3.5 mm and 2.92 mm to 3.5 mm. 

Thank you Ken. 

> The 8510 has a connector compensation function that converts a 3.5mm calibrated test port into a virtual SMA test port. See paper by Dr. Roger Pollard "Compensation Technique Improves Measurements For a Range of Mechanical Compatible Connectors",  Microwave Journal Oct. 1994. 

I'll take a look at that paper. I have seen you mention it before, but I must admit I did not look at it. I obviously guessed incorrectly what those odd values were! 

Dave

> {quote：title = kenwong写道：} {quote}> Hello Dave，>> 3.5mm校准套件中那些奇怪的发声电容条目是可配合连接器的并联电容模型，例如SMA到3.5 mm和2.92 mm到3.5 mm。
8510具有连接器补偿功能，可将3.5mm校准测试端口转换为虚拟SMA测试端口。
参见Roger Pollard博士的论文“补偿技术改进了一系列机械兼容连接器的测量”，Microave Journal，1994年10月。只有8510具有这种连接器补偿功能。
谢谢。
我在安捷伦网站上找到了这篇论文附件：尽管从阅读中可以看出，补偿可能是浪费时间，因为SMA衰退的变化可能主导SMA的较薄内导体和电介质的影响。
谢谢肯。
至少我知道知道85052B中的数字是什么意思，如果我使用2.4毫米连接器，我会做补偿，因为似乎有更强的情况打扰2.4毫米。
戴夫



     以下为原文

  > {quote:title=kenwong wrote:}{quote}
> Hello Dave,
> 
> Those strange sounding capacitance entries in the 3.5mm cal kits are shunt capacitance models of matable connectors such as SMA to 3.5 mm and 2.92 mm to 3.5 mm.  The 8510 has a connector compensation function that converts a 3.5mm calibrated test port into a virtual SMA test port. See paper by Dr. Roger Pollard "Compensation Technique Improves Measurements For a Range of Mechanical Compatible Connectors",  Microave Journal Oct. 1994. Only the 8510 has this connector compensation function. 

Thank you. I found the paper on the Agilent web site 
Attached below:

though it would appear from reading that, compensating is probably a waste of time, as the variability in SMA recession is likely to dominate the effect of the thinner inner conductor and dielectric of the SMA

Thanks anyway Ken. At least I know know where those numbers in the 85052B mean, and if I ever use 2.4 mm connectors, I will do the compensation, as there seems to be a stronger case for bothering with 2.4 mm. 

Dave


附件

• Compensation Technique Improves Measurements for a Range of Mechanically Compatible Connectors.pdf1.3 MB
  

这些论坛最近似乎相当搞砸了。
我只是试图回复Brad关于偏移延迟的微小差异的评论，并得到消息“添加子110875时未找到父键110891”。
我似乎已经遇到了那种错误。
我不打算重新组合消息，因为我相信他们经常会被发布，尽管有错误信息。
我将不得不围绕这些论坛进行搜索，看看是否有更好的地方来报告错误，因为最近似乎有很多错误。
戴夫



     以下为原文

  These forums seem rather screwed up lately. I just tried to reply Brad's comment about the slight difference in offset delays, and got the message "Parent key 110891 not found when adding child 110875." I seem to have hit that sort of error quite a bit. I'm not going to recompose the message, as I believe often they do get posted, despite the error message. 

I'll have to hunt around these forums and see if there is a better place to report errors, as there seems to be quite a lot of them recently. 

Dave

我刚尝试了另一篇文章，并再次收到错误“（Wrapped：在Member上执行DistributedCache服务的请求失败（Id = 1，Timestamp = 2013-08-28 04：41：31.931，Address = 192.25.88.8：8088，MachineId
= 33032，位置=进程：2439 @ acompl5））com.tangosol.util.Binary“



     以下为原文

  I just tried another post, and again got an error

"(Wrapped: Failed request execution for DistributedCache service on Member(Id=1, Timestamp=2013-08-28 04:41:31.931, Address=192.25.88.8:8088, MachineId=33032, Location=process:2439@acompl5)) com.tangosol.util.Binary"