MSO-X 3000系列上的XY时间模式

您好，我在XY时间模式下使用MSO-X 3054A为测试仪创建一个Lissajous图形。
CH1是x轴，ch2是y轴。
使用同轴电缆（使用1：1探头）连接源。
为了回答我的问题，您可以假设Ch1和Ch2都连接到相互相差90度的5sin（2（PI）100）伏特电源。
当x轴和y轴都设置为2V / div时，示波器显示一个5 div宽的圆。
当使用100Hz正弦波时，圆圈由8个段组成。
Z轴（EXT TRIG IN）未连接，因此不会出现屏幕消隐。
1.在此模式下，x轴似乎限制为3.1V / div。
范围报告“控件处于极限。”我无法在“用户指南”或数据表范围中看到此限制。
请确认这是否是范围限制或如何防止此限制发生。
理想情况下，我想将Ch1，x轴设置为5V / div。
2.我将数据捕获到CVS文件中。
范围仅保存创建的八个段中的一个。
我想抓住整个圈子。
我该如何做到这一点？
为什么屏幕分为八个部分？
驱动示波器的实际电路是测试仪的一部分，该测试仪使用示波器xy模式显示曲线轨迹。
获得上述问题的答案将有助于我更有效地使用范围。
谢谢你的帮助。



     以下为原文

  Hello,

I am using a MSO-X 3054A in XY time Mode to create a Lissajous figure for a tester.  CH1 is the x axis and ch2 is the y axis.  The source is connected using coax (1:1 probe used).  To answer my questions you may assume that both Ch1 and Ch2 are connected to 5sin(2(PI)100) volt sources that are 90-degress out of phase with eachother.  With both x and y axis set to 2V/div, the scope displays a circles that is 5 div wide.  The circles made up of 8 segments when a 100Hz sine wave is used.  The Z-axis (EXT TRIG IN) is not connected so blanking of the screen does not occur.

1.     The x axis appears to be limited to 3.1V/div in this mode.  The scope reports “The control is at its limit.”  I cannot see this limitation listed in the scope User Guide or data sheet.  Please confirm if this is a scope limitation or how to prevent this limit from occurring.  I ideally I would like to set Ch1, x-axis, to 5V/div.
2.     I captured data to a CVS file.  The scope only saves one of the eight segments created.  I would like to capture the entire circle.  How do I accomplish this?  Why is the screen broken into eight segments?

The actual circuit that drives the scope is part of a tester that uses the scope xy mode to display a curve trace.  Getting answers to my questions above will help me use the scope more effectively.  Thanks for your help.