[问答]

MSO-X 3054A波形显示无效

问答对人有帮助，内容完整，我也想知道答案 0 范围波形何时有效以及导致它们无效的原因是什么？未开始自动测量时，如何标记无效波形？在阅读我遇到的捕获波形的问题后，这些问题会更有意义。使用所有四个模拟通道进行测量。范围数学能力用于减去两个通道。数学结果与捕获的其中一个通道匹配。匹配波形是方波。范围测量能力用于捕获应匹配的两个波形的TOP和BASE值。物理信道（CH4）的TOP测量结果显示> 15.1V。 >符号表示测量结果可疑，可能无效。物理通道的电压/ div支持至少50V的TOP值。 15.1V TOP测量与显示的波形相匹配。数学通道显示TOP值为45.8V。因此，物理通道被错误地捕获并显示。在有效波形和测量（一个没有>）之前，后续捕获导致几次不良捕获（带有>的捕获）。无需平均即可捕获所有波形。谢谢你的帮助。 -------------------更新4月30日对于相同的设置，未重新发生范围错误。我联系安捷伦，总的感觉是通道ADC过载，导致不可预测的行为。为了测试这个想法，我使用相同的设置通过一个或四个分区驱动通道。一个分区过载不会导致错误。四分频过驱动影响过驱动信道但不影响交错信道。我确认范围不会标记未进行测量时过载的波形。重新审视原始范围错误，我无法解释ADC饱和度所见的失败。通道4不会过度过驱动，并且交错通道3是范围界限内的DC电平。如果我学到新东西，我会再次更新。现在范围正在发挥作用，我有一个有趣的设计可供使用。编辑：2013年5月1日上午12:14发表于scope_6.txt1.0 KBscope_10.txt1,021字节scope_10.png34.0 KB 以上来自于谷歌翻译以下为原文 When are scope waveforms valid and what causes them to be invalid? How are invalid waveforms flagged when an automatic measurement is not begin made? These questions will make more sense after reading the problem I encountered capturing waveforms covered below. Measurements were made using all four analog channels. The scope math ability was used to subtract two of the channels. The math result matches one of the channels captured. The matching waveform is a square wave. The scope measurement ability was used to capture the TOP and BASE values of the two waveforms that should match. The TOP measurement result for the physical channel (CH4) showed >15.1V. The > sign indicates the measurement is suspect and may be invalid. The voltage/div for the physical channel supported a TOP value of at least 50V. The 15.1V TOP measurement matched the waveform displayed. The math channel showed a TOP value 45.8V. Therefore, the physical channel was incorrectly captured and displayed. Subsequent captures resulted in several bad captures (ones with >) before a valid waveform and measurement (one without >) were made. All waveforms were captured without averaging. Thanks for your help. ------------------- update April 30 A scope error has not reoccurred for the same setup. I contact Agilent, and the general feeling was that the channel ADC was overdriven which resulted in unpredictable behavior. To tests this idea, I over drove the channels by one or four divisions using the same setup. The one division overdrive did not cause errors. The four division overdrive affected the overdriven channel but not the interleaved channel. I verified the scope does not flag waves that are overdriven when a measurement is not made. Revisiting the original scope error, I cannot explain the failure seen by ADC saturation. Channel 4 is not excessively overdriven and the interleaved channel 3 is a DC level within the scope bounds. I will update this again if I learn something new. Right now the scope is working and I have an interesting design to work on. Edited by: seen on May 1, 2013 12:14 AM 附件 scope_6.png50.8 KB scope_6.txt1.0 KB scope_10.txt1,021 字节 scope_10.png34.0 KB 0
2018-12-3 10:02:40　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × kingnet_52040 该类别下有 195 个回答。邀请回答 60user7 该类别下有 81 个回答。邀请回答蓝色冰汐该类别下有 45 个回答。邀请回答醉狼工作室该类别下有 41 个回答。邀请回答 ianwhoani 该类别下有 30 个回答。邀请回答 dkhwakd 该类别下有 25 个回答。邀请回答 aaabbb567 该类别下有 23 个回答。邀请回答 e08506806 该类别下有 20 个回答。邀请回答 szzjfyp 该类别下有 18 个回答。邀请回答 sonia87 该类别下有 16 个回答。邀请回答 ningee 该类别下有 16 个回答。邀请回答 zouqinxiang 该类别下有 15 个回答。邀请回答 xj5548 该类别下有 15 个回答。邀请回答 daichuangs 该类别下有 14 个回答。邀请回答 derek88 该类别下有 14 个回答。邀请回答 hzmbs2016 该类别下有 12 个回答。邀请回答 JST2006 该类别下有 12 个回答。邀请回答 juujwfdf 该类别下有 11 个回答。邀请回答 bisong13 该类别下有 11 个回答。邀请回答 hu_wflllllllg21 该类别下有 11 个回答。邀请回答举报郭静相关推荐 • 程序运行IntuiLink数据捕获找不到仪器 3760 • MSO-X 3000系列上的XY时间模式 1804 • 数据捕获看不到USB只提供GPIB 1259 • MSO-X 6004A信封检测器功能在哪里? 1793 • 将以太网电缆连接到MSO-X 3034A时出现异常并自动重启 1771 • 分段存储器样本是否可以获取时间戳？ 1366 • DSO-X 3054A CommandExpert怎么增量文件名 1495 • IntuiLink数据捕获和MSO-X 3014A的问题 1303 • 在MSO-X 3012A上安装演示许可证后，通道1触发器不可用 1203 • 怎么使用Benchvue保存分段数据 2949 2个回答

答案对人有帮助，有参考价值 0 我不知道发生了什么事。如果您可以为好的和坏的跟踪发布范围设置文件和范围跟踪数据文件，这可能会有所帮助。然后我可以将它们加载到某个范围SW中以查看捕获的数据值。它看起来像某种溢出。为了更快地响应，您应该考虑致电当地的Agilent技术呼叫中心。安捷伦论坛在“可用”的基础上进行监控，并不一定是解决技术问题的最快方式。人以上来自于谷歌翻译以下为原文 I don't know what's going on. It would probably help if you could post a scope setup file, and scope trace data files, for both the good and bad traces. I could then load them into some scope SW to look at the captured data values. It looks like some sort of overflow. For faster response, you should consider calling your local Agilent Technical Call Center. The Agilent Forums are monitored on an "as available" basis, and aren't necessarily the fastest way to get technical questions answered. Al

2018-12-3 10:11:28 评论举报周菊

答案对人有帮助，有参考价值 0 因此，如果您看到带有测量结果的大于号，则由于剪切而基本上无效，但范围告诉您“它至少是这么大”。剪切ADC时会发生这种情况。在大多数示波器上，ADC都精确映射到屏幕的顶部和底部。在3000X系列上，屏幕上有一小部分ADC范围...所以第一个截图是好的，第二个截图是垃圾（也很可能前置放大器饱和并且在那里振铃第二个截图）。您可能想要检查一下：Agilent DSOX2000A或DSOX3000A示波器上的测量门控http://youtu.be/ph8BoArbwbQ在这个简短视频中，我将展示如何使用缩放窗口在Agilent DSOX2000A或DSOX3000A系列示波器上测量测量。如果仍不清楚，请致电当地的联络中心（US = 800 829 4444）以上来自于谷歌翻译以下为原文 So if you see the greater than sign with a measurement result, it is essentially invalid due to clipping, but the scope is telling you "It's at least this big." This occurs when the ADC is clipped. On most scopes, the ADC is mapped exactly to the top and bottom of the screen. On the 3000X family, there is a little tiny bit of ADC range off the screen... so the first screenshot is ok, and the second one is trash (also there is a good chance the pre-amps are saturated and ringing in that second screenshot). You might want to check this out: Measurement Gating on an Agilent DSOX2000A or DSOX3000A Oscilloscope http://youtu.be/ph8BoArbwbQ In this short video, I show how to gate a measurement on an Agilent DSOX2000A or DSOX3000A series scope using the zoom window. If this is still unclear, please call your local contact center (US= 800 829 4444)

2018-12-3 10:28:24 评论举报王琳