Adjusted to DC, Noise Reject or HF Reject
Adjusted; Auto Scale can not be used for the EXT TRIG signal
DC (if GND was chosen before); AC for the video signal; otherwise, unchanged
The Auto Scale function examines all channels for signals and displays corresponding waveform. Auto
Scale 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.
When you use the Auto Scale function and the oscilloscope determines that the signal is similar to a
sine wave, the oscilloscope displays the following options.
Display multiple periods that have appropriate vertical and horizontal scales.
Set the horizontal scale to display about one period of the waveform.
Select the source: only display the current source or all sources.
Let the oscilloscope recall the previous setup.
2.15.2. Default Setup
When you push the DEFAULT SETUP button, the oscilloscope will display the CH1 waveform and remove
all the others. When you are at the default setup, press F5 to Undo Preset. Then the oscilloscope
returns to the status before default setup. The table below gives the options, buttons and controls that
change settings at default setup.
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