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您好,只是想提醒人们使用基于内部双源和组合器PNA-X的Opt-29潜在问题,因为它与IMDX测量通道有关。
我正在使用带有固件A.10.25.02的win7版本。 问题在于“噪声路径配置”设置。 在另一个主题中,我提到了这样一个事实:当加载旧的csa文件时,它会将所有非噪声数字测量通道的“端口1噪声调谐器开关”设置设置为所有“调谐器”或所有“旁路”模式,这样做 以一种看似不确定的方式。 对于大多数测量通道(即SMC),只要您在相同模式下进行校准和测量,您仍应获得相同的结果。 但是,对于IMDX测量通道,如果“端口1噪声调谐器开关”设置为“调谐器”模式,您似乎总会得到错误的结果(即远低于预期)。 验证这一点的方法是创建一个“PowerMainIn”轨迹,显示输入音调的功率电平。 如果设置为“调谐器”模式,则跟踪的输入音调功率电平将比“激励”设置中的设置低约3至5 dB。 如果Keysight可以验证此问题并努力解决它(即固件不允许任何IMDX通道'端口1噪声调谐器开关'设置选项'调谐器'模式,或自动设置为'旁路'模式,无论是什么 设置在.csa文件中),这将是伟大的。 谢谢,rok 以上来自于谷歌翻译 以下为原文 Hello, Just wanted to alert folks of a potential issue with Opt-29 based with internal dual sources and combiner PNA-X as it relates to the IMDX measurement channel. I'm using the win7 version with firmware A.10.25.02. The problem is with the 'Noise Path Configuration' settings. In another thread, I alluded to the fact that when loading older csa files, it would set all the non-noise figure measurement channels 'Port 1 Noise Tuner Switch' setting to either all 'Tuner' or all 'Bypass' mode, doing so in a seemingly indeterminate fashion. For most measurement channels, (i.e. SMC), as long as you calibrate and measure in that same mode, you should still get the same results. However, for the IMDX measurement channel, it seems you will always get the wrong results (i.e. much lower than expected) if 'Port 1 Noise Tuner Switch' is set to 'Tuner' mode. The way to verify this is to create a 'PowerMainIn' trace that shows the power level of the input tones. If it is set to 'Tuner' Mode, the input tones power level from the trace will be lower by roughly 3 to 5 dB vs what is set in the 'Stimulus' setting. If Keysight can verify this issue and work to address it (i.e. firmware will not allow any IMDX channel 'Port 1 Noise Tuner Switch' setting the option to choose 'Tuner' mode, or auto-sets to 'Bypass' mode regardless of what is set in the .csa file), that would be great. Thanks, rok |
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嗨,我现在正在用我们的NF固件人员积极地看待这个,我们需要获得更多信息来重现这个问题。
如果您可以将您的联系信息发送给我(joel_dunsmore@keysight.com),那么我们可以进行更详细的IRL会话,这将有助于解决此问题。 以上来自于谷歌翻译 以下为原文 Hi, I'm actively looking at this now with our NF firmware guy and we need to get some more information to reproduce the issue. If you could send your contact information to me ( joel_dunsmore@keysight.com ) so we can have a more detailed conversation IRL then it would help facilitate fixing this issue. |
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脑洞大赛9 发表于 2018-9-17 15:09 嗨Joel博士,您的Keysight固件工程师已经直接与我联系,我已经向他提供了他迄今为止所需的所有信息。 如果您需要更多信息,请告诉我。 感谢您关注此问题,rok 以上来自于谷歌翻译 以下为原文 Hi Dr Joel, Your Keysight firmware engineer already directly contacted me and I've given him all the information he has required so far. Let me know if you need more info. Thank you for following up on this issue, rok |
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