问题：
Where is the "Invert" button on my DPO2000 or the MSO2000?
答案：
If you have older firmware version v1.06 or below, you will need to use the Math function on the oscilloscope to subtract the channel of interest from another channel that is set to ground coupling in order to get the invert function.
The invert function has been added for firmware v1.25 or above.
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常见问题 ID 60221
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