> {quote：title = b.hall写道：} {quote}>嗯，是的，你可能是正确的，不可能无意中更改固件值。
我不知道，但我在IP中提到的页面肯定有这个主题（但也许仅适用于用户定义的工具包）。
当我从一个ENA手册（我忘记了什么型号）查看如何在ENA上创建用户文件时，它会告诉您基本上复制一个内置工具包，并对其进行修改。
因此，如果您复制您感兴趣的工具包，然后尝试修改它，您应该看到这些值。
我想如果你看了足够的菜单，并按了几下鼠标，你会发现信息。
我希望你可以不用保存用户工具包就可以做到。
当然，在我所拥有的8753,8720和PNA上，很容易找到校准套件的系数。
>问题是，如果校准套件并且校准实验室使用从网络获得的一组模型参数值，您如何检查您的VNA是否使用相同的参数值？
当然最新的可能更准确，但真正重要的是实际仪器使用的。
我有兴趣知道谁可以校准你的校准套件，以及他们给出的证书类型。
通过阅读Keysight员工的手册和一些评论，我的理解是，安捷伦以外的设备无法正常使用。
我相信有很多校准实验室会为他们真正无法正常测试的设备颁发证书。
有些我不相信校准一个40岁的AVO。
我怀疑使用现代VNA和现代高端校准套件，你可以验证一个非常古老的校准套件是否在其发布的规范内（如果有的话）。
但是使用现代体面的校准套件，我发现很难相信Keysight，Maury或国家标准实验室以外的任何实验室都能够完全验证该校准套件的性能。
通过将相位作为频率的函数进行测量，并将其与模型进行比较，您可以了解任何严重错误。
但您无法验证校准套件是否符合安捷伦规格。
我+测试了一个3.5毫米的Maury微波套件，用于那些担心它无法正常工作的人。
我很快确定负载是合理的，短路的偏移延迟大约是正确的，但是开口的中心向下移动了大约1毫米。
它是如此遥远，它不会在我的仪器上注册，但我想通过目视检查大约1毫米。
所以我基本上发现他的Maury套件出了什么问题，但我没有声称能够验证套件是否完全符合Maury Microwave规格。
您对实验室校准校准套件的能力有多大信心？
戴夫
以上来自于谷歌翻译
以下为原文
> {quote:title=b.hall wrote:}{quote}
> Well, yes, you may well be correct that it is impossible to inadvertently change the firmware values. I don't know, but the page I referred to in the IP certainly had that theme (but perhaps just for user-defined kits).
When I looked at how to create user files on a ENA from the manual of one ENA (I forget what model), it tells you to essentially copy an inbuilt kit, and modify that. So if you copy the kit you are interested in, then attempt to modify it, you should see the values.
I would have thought if you looked in enough menus, and pressed the mouse a few times, you will find the information. I would expect you can do it without saving as a user kit. Certainly on the 8753, 8720 and PNA I have here, it is quite easy to find the coefficients of the cal kits.
> The thing is, if you get your kit calibrated and the cal lab uses a set of model parameter values obtained from the web, how do you check that your VNA is using those same parameter values? Sure the latest ones may be more accurate, but what really matters is what an actual instrument uses.
I'd be interested to know who can calibrate your cal kit, and what sort of certificate they give. My understanding, from reading both the manuals and some comments from Keysight staff on here, is that the equipment to do this properly is not available outside Agilent.
I believe there are a lot of calibration labs that will issue certificates for equipment they really can't test properly. Some I would not trust to calibrate an 40 year old AVO.
I suspect using a modern VNA and a modern high-end cal kit, you could verify if a very old cal kit is within its published specification (if there is one). But with a modern decent cal kit, I find it hard to believe any lab outside Keysight, Maury or national standards lab would be able to verify the performance of that cal kit fully.
By measuring the phase as a function of frequency, and comparing that to the model, you can get an idea of any gross errors. But you will not be able to verify the cal kit actually meets the Agilent specs.
I +tested+ a 3.5 mm Maury Microwave kit for someone who had concerns it was not working properly. I quickly ascertained the load was reasonable, the offset delay of the short was about right, but the centre of the open was displaced about 1 mm down. It was so far down it would not register on my guages, but I guess about 1 mm by visual inspection. So I basically found what was wrong with his Maury kit, but I make no claim to be able to verify the kit fully met the Maury Microwave specifications.
How much confidence do you have in the ability of the lab to calibrate your calibration kit?
Dave
> {quote：title = b.hall写道：} {quote}>嗯，是的，你可能是正确的，不可能无意中更改固件值。
我不知道，但我在IP中提到的页面肯定有这个主题（但也许仅适用于用户定义的工具包）。
当我从一个ENA手册（我忘记了什么型号）查看如何在ENA上创建用户文件时，它会告诉您基本上复制一个内置工具包，并对其进行修改。
因此，如果您复制您感兴趣的工具包，然后尝试修改它，您应该看到这些值。
我想如果你看了足够的菜单，并按了几下鼠标，你会发现信息。
我希望你可以不用保存用户工具包就可以做到。
当然，在我所拥有的8753,8720和PNA上，很容易找到校准套件的系数。
>问题是，如果校准套件并且校准实验室使用从网络获得的一组模型参数值，您如何检查您的VNA是否使用相同的参数值？
当然最新的可能更准确，但真正重要的是实际仪器使用的。
我有兴趣知道谁可以校准你的校准套件，以及他们给出的证书类型。
通过阅读Keysight员工的手册和一些评论，我的理解是，安捷伦以外的设备无法正常使用。
我相信有很多校准实验室会为他们真正无法正常测试的设备颁发证书。
有些我不相信校准一个40岁的AVO。
我怀疑使用现代VNA和现代高端校准套件，你可以验证一个非常古老的校准套件是否在其发布的规范内（如果有的话）。
但是使用现代体面的校准套件，我发现很难相信Keysight，Maury或国家标准实验室以外的任何实验室都能够完全验证该校准套件的性能。
通过将相位作为频率的函数进行测量，并将其与模型进行比较，您可以了解任何严重错误。
但您无法验证校准套件是否符合安捷伦规格。
我+测试了一个3.5毫米的Maury微波套件，用于那些担心它无法正常工作的人。
我很快确定负载是合理的，短路的偏移延迟大约是正确的，但是开口的中心向下移动了大约1毫米。
它是如此遥远，它不会在我的仪器上注册，但我想通过目视检查大约1毫米。
所以我基本上发现他的Maury套件出了什么问题，但我没有声称能够验证套件是否完全符合Maury Microwave规格。
您对实验室校准校准套件的能力有多大信心？
戴夫
以上来自于谷歌翻译
以下为原文
> {quote:title=b.hall wrote:}{quote}
> Well, yes, you may well be correct that it is impossible to inadvertently change the firmware values. I don't know, but the page I referred to in the IP certainly had that theme (but perhaps just for user-defined kits).
When I looked at how to create user files on a ENA from the manual of one ENA (I forget what model), it tells you to essentially copy an inbuilt kit, and modify that. So if you copy the kit you are interested in, then attempt to modify it, you should see the values.
I would have thought if you looked in enough menus, and pressed the mouse a few times, you will find the information. I would expect you can do it without saving as a user kit. Certainly on the 8753, 8720 and PNA I have here, it is quite easy to find the coefficients of the cal kits.
> The thing is, if you get your kit calibrated and the cal lab uses a set of model parameter values obtained from the web, how do you check that your VNA is using those same parameter values? Sure the latest ones may be more accurate, but what really matters is what an actual instrument uses.
I'd be interested to know who can calibrate your cal kit, and what sort of certificate they give. My understanding, from reading both the manuals and some comments from Keysight staff on here, is that the equipment to do this properly is not available outside Agilent.
I believe there are a lot of calibration labs that will issue certificates for equipment they really can't test properly. Some I would not trust to calibrate an 40 year old AVO.
I suspect using a modern VNA and a modern high-end cal kit, you could verify if a very old cal kit is within its published specification (if there is one). But with a modern decent cal kit, I find it hard to believe any lab outside Keysight, Maury or national standards lab would be able to verify the performance of that cal kit fully.
By measuring the phase as a function of frequency, and comparing that to the model, you can get an idea of any gross errors. But you will not be able to verify the cal kit actually meets the Agilent specs.
I +tested+ a 3.5 mm Maury Microwave kit for someone who had concerns it was not working properly. I quickly ascertained the load was reasonable, the offset delay of the short was about right, but the centre of the open was displaced about 1 mm down. It was so far down it would not register on my guages, but I guess about 1 mm by visual inspection. So I basically found what was wrong with his Maury kit, but I make no claim to be able to verify the kit fully met the Maury Microwave specifications.
How much confidence do you have in the ability of the lab to calibrate your calibration kit?
Dave
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