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你好我在预设PNA-X N5244A时会增加回波损耗。
相反，迹线显示或多或少的平扫描显示阶跃响应。 我看起来工厂校准数据在某些频率上具有固定幅度偏移。 每个端口显示的步骤几乎没有差异（参见图）。 网络有2.4公头连接器，所以我在所有端口上连接Maury F 2.4到F 2.92适配器（连接适配器不是添加响应的原因）。 这是什么原因？ 这会对校准和测量质量产生影响吗？ 如何解决？ PNA-X N244A _UNEXPECTER RESPONCE STEPS_S11_S22_S33_S44.PNG51.0 KB 以上来自于谷歌翻译 以下为原文 Hello I am getting add Return Loss when I preset my PNA-X N5244A. The trace instead showing more or less flat sweep showing step response. I look like the factory cal data have fix amplitude offset at some frequencies. Each port showing little different pastern of that steps (see the plots). The Network have male 2.4 connectors so I attach Maury F 2.4 to F 2.92 adapters on all ports (the attach adapters are not the cause of the add response). What is the cause of that? Does this can have impact on calibration and measurement quality? How to fix that? 附件
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4个回答
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你可以在与S11相同的情节中，打开一个R1,1和一个A，1个轨迹并将所有刻度设置为相同并在此处发布新图吗？
以上来自于谷歌翻译 以下为原文 can you on the same plot as the S11, also turn on an R1,1 and a A,1 trace and set all the scales the same and post the new plot here? |
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服务菜单中的接收器显示功能将方便地显示所有单个接收器响应。 它看起来好像IF增益调整有点偏，但我不确定这是怎么回事。 如果仍然看到奇怪的响应，则再次运行Receiver Display例程。 完成后，打开SCPI命令控制台并发送此命令：* DIAG：MXCAL：STAT OFF *然后发布该响应的另一张图片。 预设将重新打开校准。 以上来自于谷歌翻译 以下为原文 The Receiver Display feature in the service menu will conveniently display all single receiver responses. It looks to me as though the IF Gain adjustment is off a bit, but I am not sure how that could happen. If you still see that weird response, then run the Receiver Display routine again. After that is done, open the SCPI Command console and send this command: *DIAG:MXCAL:STAT OFF* Then post another picture of that response. A Preset will turn the cal back on. |
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这确实是工厂混频器校准或IFGain校准的问题。 JVal可以帮助您在盒子上重新运行这些调整。 可以从SICL / GPIB / SCPI对话框启动GPIB控制台，您可以在此处找到：https：//dl.dropboxusercontent.com/u/87949221/Forum/ThreadID_39379/GPIBDialog.png！ 以上来自于谷歌翻译 以下为原文 this does look to be an issue with either the factory mixer cal or the IFGain calibration. JVal can help you with re-running those adjustments on your box. the GPIB console can be started from the SICL/GPIB/SCPI dialog, which you can find here: !https://dl.dropboxusercontent.com/u/87949221/Forum/ThreadID_39379/GPIBDialog.png! |
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我将从IF增益调整开始，然后进行之后列出的所有调整。 阶梯式偏移似乎与IF相关。 我的猜测是，运行该调整将解决这些步骤。 这种调整相当简单，只需几分钟。 以上来自于谷歌翻译 以下为原文 I would start with the IF Gain adjustment, and then do all the adjustments that are listed afterwards. The stepped offsets seems to be IF related. My guess is that running that adjustment will fix those steps. This adjustment is fairly simple and only takes a few minutes. |
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