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您好我试图从我的计算机/仪器测量S21触发。
但是当我进行2端口校准并保存时,之后S21扫描不会立即发生。 一旦触发,分析仪首先扫描(可能是针对S11),然后在扫描时再次扫描屏幕上的S21。 我试过检查其他设置,我在2端口-4trace模式。 我想用IF BW 10 / 30Hz对1601点进行2端口校准。 校准后触发器一旦触发,为什么不进入S21模式? 这两个端口是否以某种方式耦合? 或者任何其他设置/问题导致S21在触发时无法测量任何建议? 提前致谢 以上来自于谷歌翻译 以下为原文 Hello I was trying to measure S21 triggering from my computer/instrument. But when I do a 2-port calibration and save it, after that the S21 sweep doesnt occur instantaneously. Once triggered the Analyzer first sweeps(may be for S11) and then sweeps once more showing S21 on the screen as it sweeps. I tried checking Misc Setup, I am in 2 port-4trace mode. I wanted to do a 2 port calibration for 1601 points with an IF BW 10/30Hz. Why the analyzer doesnt go to S21 mode once triggered after calibration? Are the two ports somehow being coupled?? Or any other settings/issue is causing S21 not to be measured on trigger Any suggestion? thanks in advance |
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1个回答
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对于2端口校准,必须测量所有FOUR S参数(原始)。
因此,当您触发S21时,首先隐藏扫描测量S12和S22(同时),然后进行前向扫描测量S11和S21(同时),并且校正后的S21扫描在采集数据时更新。 在30 Hz时,反向(隐藏扫描)需要53秒才能获取,然后S21校正数据将开始出现在正向扫描上。 通常,对于ENA,30 Hz是非常窄的BW。 也许你可以考虑将BW提高到300 Hz或1 kHz,看看结果是否可以接受。 以上来自于谷歌翻译 以下为原文 For a 2-port calibration, all FOUR S-parameters (raw ) must be measured. Thus, when you trigger S21, first a hidden sweep measures S12 and S22 (simultaneously) and then a foward sweep measures S11 and S21 (simultaneously) and the corrected S21 sweep updates as the data is taken. At 30 Hz, it will take 53 seconds for the reverse (hidden sweep ) to acquire, and then the S21 corrected data will start to appear on the forward sweep. Normally, for an ENA, 30 Hz is a very narrow BW. Perhaps you might consider raising the BW to 300 Hz or 1 kHz to see if the results are acceptable. |
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