无法测量两个信号之间的相移

我认为你应该确保你指定了''参数。
我使用类似'：MEASure：PHASe CHANnel1，CHANnel3，RISing“之类的东西，从来没有任何问题.Al



     以下为原文

  I think that you should make sure that you have the '' parameter specified. I use something like ':MEASure:PHASe CHANnel1,CHANnel3,RISing" and never have any problems.

Al

感谢您的回复！
但根据文档（我使用的是Keysight Infiniium示波器程序员指南，第741页），我认为此参数是可选的，示例“：MEASure：PHASe？CHANnel1，CHANnel2”是有效的。
然而，我尝试明确指定边缘：“：MEASure：PHASe？CHANnel1，CHANnel2，RISing”结果是相同的：测量仅适用于通过“测量”菜单手动添加的情况。



     以下为原文

  Thanks for your reply!

But according to the documentation (I used Keysight Infiniium Oscilloscopes Programmer's Guide, page 741) I think this parameter is optional and the example ":MEASure:PHASe? CHANnel1,CHANnel2" is valid.

Nevertheless I tried specify edge explicitly: ":MEASure:PHASe? CHANnel1, CHANnel2, RISing"

The results are the same: the measurement only works in case of being added manually via "Measurements" menu.

1）文档可能是错误的2）我很少依赖默认值。
我努力始终完全定义我想要的测量。
人



     以下为原文

  1) The documentation may be wrong
2) I seldom depend on defaults. I strive to always fully define the measurement I want to make.

Al

是的，我完全同意。
这就是为什么我试图明确指定这个参数，虽然没有效果。



     以下为原文

  Yeah, I totally agree. That is why I tried to specify this parameter explicitly, though with no effect.

简短的回答是“我不知道你的测量有什么问题，它在我的范围内工作得很好。”
使用命令行执行此操作时是否检查了阈值设置？
他们是什么？
当您使用命令行时，屏幕底部会显示什么？
以编程方式创建测量时，它会显示在屏幕上，就像您从界面创建测量一样。
人



     以下为原文

  The short answer is "I don't know what's wrong with your measurement, It works fine on my scope."

Have you checked the threshold settings when you are doing it with the command line? What are they?

When you use the command line, what shows up on the bottom of the screen? When you create a measurement programmatically, it shows up on the screen, just like if you create it from the interface.

Al

关于边缘，你会非常友好地告诉哪个命令设置/读取测量的边缘检测水平？
当我通过GPIB发送测量命令时，屏幕上没有任何变化（无论测量成功与否，例如，如果我测量幅度，结果有效但屏幕上没有任何变化）。
解决方案：帖子中描述的问题似乎通过使范围明确地在所有边缘上工作来解决（“：ANAL：AEDG ON”）。
附：
奇怪但手册说：>如果当前未设置，则使用该参数将设置“测量所有边缘”模式。
我试图使用方向但没有效果。
所以现在我只是在重置后发出“在所有边缘上工作”命令，它运行良好！
谢谢你，阿尔戈斯！



     以下为原文

  Concerning edges, would you be so kind to tell which command is to set/read the edge detection level for the measurements?

Nothing changes on the screen when I send measurements commands via GPIB (regardless of the measurement being success or not, for example if I measure amplitude the result is valid but nothing changes on the screen).

SOLUTION: The problem described in the post seemed to be solved by making scope to work on all edges explicitly (":ANAL:AEDG ON").

P.S. Strange but the manual says that:
>Using the  parameter will set the "Measure All Edges" mode if it is not currently set.
I tried to use the direction but with no effect. So now I just issue "work on all edges" command after reset and it works well!

Thank you,  algoss!