DSA91304A触发下按钮自动缩放的含义

> 1.现在我们只使用通道4，但如果按下自动定标按钮，通道1将被激活，但通道1中没有信号。>> 2.触发器下按钮自动缩放的含义。
据我所知，这个按钮意味着触发条件将由振荡器自身确定，而不是由触发器配置决定。
这是对的吗？
当您不确定您是否在各种通道上有信号，它们可能具有什么幅度和频率时，自动缩放才真正可用。
它取代了模拟示波器时代的“BeamFinder”。
当连接到新信号时，我几乎总是按“默认设置”，然后按“自动定标”。
以下是发生的情况： - 范围在所有通道中查看是否存在明显大于“噪音”的信号。
“实用工具”下有一个选项，仅查看已打开的频道。
- 在任何带信号的通道上，它设置V / Div，使信号占据屏幕垂直方向的80-90％ - 看看哪些通道具有明显的周期性特征，然后设置采样率和深度，
在所有通道上，捕获最慢信号的几个周期。
- 它在最高编号通道的上升沿设置触发器它可以被许多东西“欺骗”。
它对于非常低级别的信号效果不佳，认为它们是噪音。
它不适用于振幅调制，如AM，QAM，雷达等。如果您不喜欢结果，可以“撤消”AutoScale，并且范围可以追溯到之前的设置。
对于您的问题：1。如果您的示波器在一段时间内没有校准，则通道1上的噪声可能已经增长到足以使示波器在那里看到信号。
如果通道1连接到任何物体，电缆，电线或目标，则可能有足够的信号表明它在AutoScale期间打开。
如果没有连接，并且校准无法解决问题，那么您可能需要修复范围。
2. AutoScale位于Trigger区域下，但不属于它。
AutoScale不会关注任何先前的设置，包括触发器。
它确实保存了它们，因此“撤消”可以正常工作。
我希望这有帮助。
人



     以下为原文

  > 1.     Now we only use Channel 4, but if the Autoscale button is pressed, Channel 1 will be activated, but there is no signal in Channel 1.
> 
> 2.     The meaning of the button Autoscale under Trigger. As far as I understand this button means that the trigger condition will be determined by the osciloscop self and not by the trigger configuration. Is it correct?

Autoscale is really for use when you don't know for sure if you have a signals on the various channels, what amplitude, and what frequency they might be at. It replaces 'BeamFinder' from the days of analog scopes.

When connecting to new signals, I almost always press 'Default Setup', followed by 'AutoScale'. Here's approximately what happens:
- The scope looks across all channels to see if there is a signal that is significantly larger than 'noise'. There is an option available under 'Utilities' to only look at channels that are turned on.
- On any channel with a signal, it sets the V/Div so that the signal takes up 80-90% of the vertical on the screen
- It looks to see what channels have obviously periodic characteristics, then sets the sample rate and depth, on all channels, to capture a few periods of the slowest signal.
- It sets the trigger on the rising edge of the highest numbered channel

It can get 'fooled' by a number of things. It doesn't do well with very low-level signals, thinking they are noise. It doesn't do well with Amplitude modulation, like AM, QAM, Radar, etc.

If you don't like the results, you can 'Undo' the AutoScale, and the scope goes back to previous settings.

To your questions:
1. If your scope hasn't been calibrated in a while, the noise, on Channel 1, may have grown enough that the scope is seeing a signal there. If Channel 1 is connected to anything, a cable, wire, or a target, there may be enough signal that it's getting turned on during AutoScale. If nothing is connected, and calibration doesn't fix the problem, then you probably need a repair on the scope.
2. The AutoScale is under the Trigger area, but not part of it. AutoScale does not pay attention to any previous settings, including the trigger. It does save them, so that 'Undo' works, though.

I hope this helps.

Al

A11主板更换后请帮助DSA91304A更改为DSO90804 ...安装的许可证软件无法正常工作...需要建议



     以下为原文

  Please helpDSA91304A was change to DSO90804 after A11 Board was replace... License software installed not working... need advice