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and after calibrating is finished, the word in red disappears. When the temperature changes largely, the auto-
calibration function can make the oscilloscope maintain the highest accuracy of measurement.
Auto-calibration should be done without probe.
Auto-calibration process takes about two minutes.
If the temperature changes above 10℃, we recommended users perform the auto-calibration.
Manual zero calibration- The oscilloscope supports manual zero calibration for each channels. Click the "Fine"
button in the lower left corner would open the forced channel selection menu and display the offset value, select the
channel to be adjusted, and slide the waveform up and down to manually adjust the zero position. Tap“△”,
“▽”button can fine-tune the zero position, as shown in Figure 2-13
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