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Hii ..我正在使用PNA-X N5242A进行测量。
我正在使用Trace S21进行测量和测量。 PNA-X的接收器B用于在DUT上执行测试之前以脉冲模式执行源功率校准。 DUT的输入功率* 0dBm * DUT的输出功率* 53 dBm *我在DUT的输出端使用50 dB衰减器来降低功率和功耗。 我的电缆损耗约为5 dB。 所以我在PNA的端口2处获得的功率小于0dBm。 我在过去1个月的源功率校准后进行了测试。 我每次都得到了理想的结果。 *问题：*突然有一天，当我执行源功率校准时，* PNA显示源功率校准失败*。 *所以我检查生成的Power @ R1（接收器），它显示-25dBm，尽管我从Port1产生0dBm电源。* *然后我连接端口1＆amp; 端口2通过电缆＆amp; 检查功率电平@接收器B，它还显示-25dBm。* *但是当我通过PPM *检查时，PNA正在生成精确的0dBm @端口1。 然后我打电话给安静的人检查PNA接收器，检查PNA后他告诉接收器A＆amp; B变坏了，因为你输了大功率然后马克斯。 允许的功率水平。 *我无法理解它是如何发生的，因为我在DUT的输出端使用50 dB衰减器。 或者如果它发生，那么只有接收器B应该变坏，因为我正在使用S21跟踪。* *接收器A＆amp;有没有任何其他原因。 B可能会变坏吗？*我需要帮助来诊断原因。 以上来自于谷歌翻译 以下为原文 Hii.. I am using PNA-X N5242A for my measurement. I am using Trace S21 for my measurement & Receiver B of PNA-X for performing source power calibration in Pulse mode before performing the test on DUT. Input Power of DUT *0dBm* Output Power of DUT *53 dBm* I am using 50 dB attenuators at the output of DUT to reduce the power & my cable loss is around 5 dB. So I am getting less than 0dBm power at port 2 of PNA. I was performing test after source power calibration from last 1 month & I was getting desired results everytime. *Problem:* suddenly on one day, When I performed source power calibration, *PNA shows source pow calibration failed*. *So I check generated Power @ R1 (receiver), it shows -25dBm eventhough I was generating 0dBm power from Port1.* *Then I connect Port 1 & Port 2 through a cable & check the Power level @ receiver B, it also shows -25dBm.* *but PNA was generating exact 0dBm @ port 1 when I check through PPM*. then I call agilent person to check the PNA reciever, after checking the PNA he told that receiver A & B has gone bad because you fed high power then Max. permissible power level. *I am not able to understand how it can happen, because I am using 50 dB pad at the output of DUT. or if it happen then only receiver B should go bad, because I am using S21 trace.* *Is there any other reason by which receiver A & B can go bad?* I need help to diagnose the reason. 
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11个回答
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如果您可以运行OpCheck实用程序并发布生成的文本文件，那将是很好的。
单击实用程序，系统，服务，操作员检查。 您将需要至少一个短标准或开放标准（尽管F-F适配器在这些频率下可以正常工作。）这将为我们提供一些线索，了解哪些仍然有效，哪些无效。 以上来自于谷歌翻译 以下为原文 It would be nice if you could run the OpCheck utility and post the resulting text file. Click on Utilities, System, Service, Operators Check. You will need at least one Short or Open standard (although a F-F adapter works well enough as an open at these frequencies.) This will give us some clue as to what still works and what doesn't. |
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胡bbs2 发表于 2019-1-28 12:15 嗨jvall。 感谢您的回复。 实际上是访问我们实验室的安静的人，他也经营运营商的支票。 在操作员检查PNA显示接收器失败。 运行操作员检查后，请告诉我PNA保存结果文本文件的路径。 以上来自于谷歌翻译 以下为原文 Hi jvall. Thanks for reply. Actually the agilent person who visited our lab, he also run operator's Check. In operator check PNA shows receiver fail. Please tell me the path where PNA saved resultant text file after running the operator check. |
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胡bbs2 发表于 2019-1-28 12:15 我想再说一下，当我在PNA中检查10dB焊盘的S21走线时。 它显示的是S21的正确值，但有噪音。 当接收器工作不正常但显示S21值（带噪声）几乎正确时，是否有可能？ 以上来自于谷歌翻译 以下为原文 I want to say one more thing that when I am checking S21 trace in PNA of a 10dB pad. it is showing proper values of S21 but with noise. Is it possible that when receiver is not working properly but it is showing S21 values (with noise) almost correct ? |
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asd004 发表于 2019-1-28 12:38 路径应为C： Program Files Agilent Network Analyzer Service。 我现在在家里，并不确切的文件名，但它应该像OpCheckLog.txt一样请记住，大多数安捷伦本周都关闭了，所以任何回复都可能需要一段时间。 即使源和/或接收器有缺陷，您仍然可以获得良好的S参数测量，具体取决于测量的内容和错误。 在您的情况下，如果混频器由于损坏而导致转换效率较低，则可能仍然显示出良好的S21结果，尽管迹线噪声可能更差。编辑：jvall于2013年12月23日上午9:56 以上来自于谷歌翻译 以下为原文 The path should be C:Program FilesAgilentNetwork AnalyzerService. I am at home now and am not positive of the exact file name, but it should be something like OpCheckLog.txt Keep in mind that most all of Agilent is shut down for this week, so any replies may take awhile. Even if the source and/or receiver is defective, you could still get a good S-Parameter measurement, depending upon what was measure and what was wrong. In your case, if the mixer has poor conversion efficiency due to damage, it may still show good S21 results, although the trace noise may be much worse. Edited by: jvall on Dec 23, 2013 9:56 AM |
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胡bbs2 发表于 2019-1-28 12:57 感谢jvall的持续支持。 我将尝试在PNA＆amp;中找到该文件。 很快发布。 实际上我本周无法使用PNA。 所以我会尽快尝试获取该文件。 以上来自于谷歌翻译 以下为原文 Thanks jvall for your continuous support. I will try to find the file in PNA & post it soon. Actually I will not be able to use PNA in this week. so I will try to get the file as soon as possible. |
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你用这个放大器的驱动功率是什么？ 它的增益是否超过50 dB？ 有没有机会振荡并从输入中发出高功率？ Waht是S21和S12？ 通常情况下，在这种情况下，我们发现有人犯了一个小错误（例如，将放大器向后连接一次）和噗，造成了损坏。 以上来自于谷歌翻译 以下为原文 What did you use for drive power of this amplifier? Did it have more than 50 dB of gain? Is there any chance it oscillated and sent high power out of the input? Waht is the S21 and S12? Usually, in these kind of cases, we find someone made a little mistake (hooked up the amplifier backwards one time, for example) and poof, the damage is done. |
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嗨Dr_Joel是DUT有53 dB增益＆amp; 我使用50V安捷伦电源作为放大器。 我认为它没有振荡和 在输入端发回高功率，但我也会研究这个概率。 你在问S21＆amp; DUT的S12？ 以上来自于谷歌翻译 以下为原文 Hi Dr_Joel yes DUT has 53 dB gain & I am using 50V Agilent Power supply for amplifier. I think it did not oscillated & send back high power at input but I will look into this probability also. Are you asking S21 & S12 of DUT? |
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有了这些功率级别，您必须非常小心。 S21和S12有什么价值？ 放大器的K因子是多少？ 您是否将首选项设置为“警告接收器过载”和“关闭接收器过载时的源电源”。 我有机会（或其他人）向后连接它。 吹掉端口1的接收器是有道理的.... 以上来自于谷歌翻译 以下为原文 With these power levels, you do have to be very careful. What are the values of S21 and S12? What is the K factor of the amplifier? Do you have the preferences set to "warn on receiver overload" and "shut off source power on receiver overload". I there any chance you (or someone else) hooked it up backward. That would make sense to blow out port 1 receivers.... |
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嗨，Joel博士，感谢您的支持与支持。 祝你新年快乐。 我没有使用偏好“警告接收器过载”＆amp; “关闭接收器过载时的电源”。 你能告诉我如何使用这些偏好吗？ 实际上我开始知道一些有趣的事情，其他一些工程师在我休假时也会使用PNA。 他正在测试DUT，它的增益约为35dB＆amp; 输出功率为20dBm。 我认为PNA因为他的DUT而变质，因为在休假之前我运行了源功率校准＆amp; 它运作良好＆amp; 离开后，当我运行源功率校准时，显示失败。 这意味着当我休假时，PNA会发生一些事情。 我认为由于源功率校准，PNA接收器不会坏，因为我在脉冲模式下执行0dBm的源功率校准。 以上来自于谷歌翻译 以下为原文 Hi Dr. Joel Thanks for you support & wish you a happy new year. I did not use the preference "Warn on reciever overload" & "shut off source power on receiver overload". Can you tell me how to use these preferences? Actually I came to know some interesting thing that some other Engineer also use the PNA when I was on leave. He was testing a DUT which has gain around 35dB & Output power is 20dBm. I think PNA gone bad because of his DUT, because before going on leave I run the source power calibration & it was working fine & after coming from leave as I run the source pow calibration it shows fail. It means something has happen to PNA when I was on leave & I think PNA receiver cannot go bad because of source power calibration because I was performing source pow calibration at 0dBm in pulse mode. |
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从帮助文件：如何设置PNA首选项使用前面板硬键[软键]按钮PNA菜单使用鼠标按系统然后[配置]然后[更多]然后[首选项]滚动到列表的底部，过载保护是 最后两个。 以上来自于谷歌翻译 以下为原文 From the help file: How to set PNA Preferences Using front-panel hardkey [softkey] buttons PNA Menu using a mouse Press System then [Configure] then [More] then [Preferences] Scroll to the bottom of the list, the overload protection are the last two. |
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脑洞大赛9 发表于 2019-1-28 14:14 来自帮助文件：接收器过载时的报告PNA屏幕上显示一条警告消息，指示接收器过载或处于压缩状态。 显示的数据可能不准确。 每次扫描出现一个错误，并在错误日志中报告。 接收器过载时报告不要在屏幕上显示过载警告或在错误日志中报告这些错误当接收器过载时关闭电源关闭。 当接收器过载时，关闭所有端口的电源。 一个 以上来自于谷歌翻译 以下为原文 from the helpfile: Report when receiver is overloaded A warning message is displayed on the PNA screen indicating that a receiver is overloaded or in compression. The displayed data is probably not accurate. One error per sweep appears and is reported in the Error Log. Report when receiver is overloaded Do NOT show overload warnings on the screen or report these errors in the error log Turn Source Power Off when receiver is overloaded. Turn OFF power to ALL ports when a receiver is overloaded. A |
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