The Auto function examines all channels for signals and displays corresponding
waveforms. Auto determines the trigger source according to the following conditions.
If multiply channels get signals, the oscilloscope will use the channel with the lowest
frequency signal as the trigger source.
If no signals are found, the oscilloscope will use the lowest-numbered channel
displayed in Auto Scale as the trigger source.
If no signals are found and no channels are displayed, the oscilloscope will display and
use Channel 1 as the trigger source.
Default Setting
Long press button, enter Short key setting menu, and select Default. Press
button, pops up the prompt to recall the default settings on the screen, now press F1 to
confirm. The oscilloscope will display the CH1 waveform and remove all the others. Press
F4 to cancel. The table below gives the options, buttons and controls that change settings
at default setup.