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使用带有fw A.09.33.09的PNA-X E8364B。
我正在进行正常的2端口测量。 最近我们注意到，当进行单次扫描时，我们得到3-4次扫描，其中测量结果为S21为-10到15 dB并且非常嘈杂，并且S11接近于零。 然后扫描将给出正确的，无噪声的S21，约为-0.1dB。 然后下一次扫描可能会很好，或者可能是次扫描。 这发生在几台机器上。 玩完之后，处于Point Sweep模式似乎是一个问题。 当我切换到标准扫描时，我得到了可靠的测量结果。 我不知道PNA-X如何进入Point Sweep模式，是否在采取某些动作时自动设置，或者某些技术人员是否设置了它。 这不是我们程序的一部分。 这是Point Sweep模式的问题吗？ 查 以上来自于谷歌翻译 以下为原文 Using the PNA-X E8364B with fw A.09.33.09. I'm doing normal 2-port measurements of a through. Recently we've noticed that when doing a single sweep, we get 3 - 4 sweeps where the measurement gives an S21 of -10 to 15 dB and be very noisy, and a S11 of close to zero. Then the sweep will give a correct, non-noisy, S21 of about -0.1dB. Then the next sweep might be good or it might be the bad sweep again. This has happened on several machines. After playing around, it seems to be a problem with being in the Point Sweep mode. When I switch to Standard Sweep I get reliably good measurements. I don't know how the PNA-X got into Point Sweep mode, whether it's set automatically when some action is taken, or whether some technician sets it. It's not part of our procedure. Is this a problem with Point Sweep mode? Chuck 
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你的帖子中有一些差异，所以让我们先把它们清除掉。
E8346B不是PNA-X; 这是一个PNA和一个旧的模型。 我之所以指出这一点的原因是因为你说你在这个盒子上使用的固件版本（A.09.33.09）在这个型号的PNA上是不正式支持的。 请参阅此站点（http://na.tm.agilent.com/pna/firmware/firmware.htm）以获取支持的型号和相应的固件版本列表。 至于你描述的问题，我不能说这是任何实际上支持A.09.33.09的PNA / PNA-X型号的已知问题。 实际上，在标准通道中没有情况下通道会自动切换到点扫描模式。 这将始终必须由用户明确选择。 在这种情况下你打开了2端口校准吗？ 你能为我们提供一个说明这个问题的状态文件吗？ 如果问题是较新的固件和较旧的硬件之间的不良交互，我们将无法解决这个问题，因为E8364B上最新支持的固件是A.07.50.67（如果我的记忆对我有用，那么 点扫描功能在该版本中不可用）。 为了能够在此PNA上安装更新的固件，您必须将其升级到C型号。 以上来自于谷歌翻译 以下为原文 There are some discrepancies in your post, so let's get those cleared away first. the E8346B is not a PNA-X; it is a PNA and an older model at that. the reason I point this out is because the version of firmware that you say you are using on this box (A.09.33.09) is not officially supported on this model PNA. Please refer to this site (http://na.tm.agilent.com/pna/firmware/firmware.htm) for a list of supported model numbers and corresponding firmware revisions. Now as for the issue that you describe, I can't say that it is a known problem on any of the PNA/PNA-X model numbers that actually do support A.09.33.09. In fact, there are no situations in a standard channel where the channel would automatically switch to point sweep mode. this will always have to be selected explicitly by the user. do you have a 2-port calibration turned on in this situation? Can you provide us a state file that illustrates this problem? If the issue turns out to be a bad interaction between the newer firmware and older hardware, we will not be able to remedy that since the latest supported firmware on the E8364B is A.07.50.67 (and if my memory serves me right, the point sweep feature was not available in that version). To be able to put newer firmware on this PNA, you would have to upgrade it to a C model. |
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我道歉。 我们实际上正在使用N5244A。 我们确实打开了一个双端口电话，但是我已经尝试了有和没有cal，以及端口3和4。 今天下午我将从机器上获取状态文件。 查 以上来自于谷歌翻译 以下为原文 My apologizes. We are actually are using the N5244A. We do have a two port cal turned on, but I've tried it with and without the cal, and on ports 3 and 4 also. I'll get a state file from the machine this afternoon. Chuck |
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嗨Daras，我在这里做了一点侦探工作，发现大约一个半月前有人出来了一个cal程序，要求将Sweep设置为Point Sweep。
那是我们开始遇到这个问题的时候。 可能在此之前没有人改变类型，它始终处于标准模式。 现在我已经指示技术人员使用标准扫描模式。 我会等到你解决了这个问题才能完成我们的程序。 我还有一个关于Point Sweep的问题。 我注意到Point Sweep的扫描时间比Standard Sweep长得多。 那么，Point Sweep的目的是什么？ 查 以上来自于谷歌翻译 以下为原文 Hi Daras, I've done a little detective work here and found that about a month and a half ago someone came out with a cal procedure calling for setting the Sweep to Point Sweep. That was when we started having this problem. Probably before that no one changed the type and it was always in Standard mode. For now I've instructed the tech's to use the Standard Sweep mode. I'll wait until you've resolved this problem to finalize our procedure. I also have a question about the Point Sweep. I've noticed that Point Sweep results in a much longer sweep time than Standard Sweep. So, what is the purpose of Point Sweep? Chuck |
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我是卖报的小男孩 发表于 2019-4-18 19:04 点扫描通常意味着我称之为“乒乓”扫描，你在每个点上测量正向和反向，然后继续下一个点。 在某些情况下，对单个频率进行所有测量并在移动到下一个点之前计算误差校正是有益的。 我见过需要这样的天线测试或TR模块测试等情况。 它慢得多，因为它导致测试端口在测量之间来回切换。 这将是一个需要它的特殊情况。编辑：Dr_joel于2012年6月7日下午2:26 以上来自于谷歌翻译 以下为原文 Point Sweep usually means what I would call "ping-pong" sweep, where you measure forward and reverse on each point and then carry on to the next point. In some cases, it is beneficial to make all the measurements of a single frequency and compute the error correction before moving to the next point. I've seen cases such as antenna test or TR-module test that required this. It is much slower since it causes the test port to switch back and forth between measurements. It would be a special case where it was required. Edited by: Dr_joel on Jun 7, 2012 2:26 PM |
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我是卖报的小男孩 发表于 2019-4-18 19:04 请继续关注 - 这绝对是我的调查清单。 这只是列表有点长。 我有一些数据后会立即更新。 以上来自于谷歌翻译 以下为原文 Please stay tuned - this is definitely on my list to investigate. it is just that the list is a bit long. I will update here as soon as I have some data. |
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感谢Dr_Joel的解释。 标准和点扫描的帮助使得Point Sweep看起来像是一个更新，更漂亮的扫描。 但听起来像标准扫描是应该使用的，除非你知道需要Point Sweep。 我会让我们的人知道留在标准扫描。 Daras，感谢您调查此问题。 现在听起来我不应该使用Point Sweep，但我想知道问题是什么。 查 以上来自于谷歌翻译 以下为原文 Thanks for the explanation Dr_Joel. The help on the Standard and Point Sweeps makes it seem like the Point Sweep is a newer, fancier sweep. But it sounds like the Standard Sweep is what should be used unless you know the Point Sweep is needed. I'll let our people know to stay in Standard Sweep. Daras, thanks for looking into the problem. It sounds now that I shouldn't use the Point Sweep, but I would like to know what the problem is. Chuck |
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我是卖报的小男孩 发表于 2019-4-18 19:45 我已经回去把A.09.33.09版本放在我的PNA-X上了，我已经回忆起你已经附加的所有状态，并且已经自己做了一些额外的实验，但是还没能重现你的问题。 在你的系统上见过。 在我的系统上，点扫描和标准扫描的结果在打开和不打开校准时是相同的。 鉴于您已经确定点扫描不是您测量的正确选项以及我无法重现问题的事实，我将暂时搁置此问题，直到我们获得其他观察和线索。 以上来自于谷歌翻译 以下为原文 I've gone back and put A.09.33.09 version on my PNA-X and I have recalled all the states that you have attached and have done some additional experimentation on my own, but have not been able to recreate the problem that you have seen on your system. on my system the results of point sweep and standard sweep are identical with and without calibration turned on. Given that you've determined that point sweep is not the correct option for your measurement and the fact that I can't recreate the problem, I am going to shelve this issue for now until we get additional observations and clues. |
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Topcbpcba 发表于 2019-4-18 19:53 这很有意思，因为我们已经看到至少有三种不同的PNA-X。 但既然我有一个解决方案，我现在可以接受你搁置这个问题了。 谢谢。 查 以上来自于谷歌翻译 以下为原文 That's interesting, since we've seen that on at least three different PNA-X's. But since I have a solution, I can accept your shelving this issue now. Thanks. Chuck |
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