The function buttons of the oscilloscope are classified as follows:
Channel 1:
Press the channel 1 button to enter the channel menu.
Under the channel 1 button, the function keys have the following functions:
F1
Channel 1 display switch
F2
Unit number x1, x10, x100 selection
F3
AC/DC coupling options
OK
Save reference waveform when reference waveform A and B are open
←
CH1 mobile
→
CH1 mobile
↑
CH1 Gear adjustment
↓
CH1 Gear adjustment
Press the channel 1 button again to enter the channel unit display menu: