Tenma 72-14520 Instructions Manual page 23

OPERATION
Set Level System
• ROLL mode
• When the trigger is in automatic mode and using the SCALE knob to adjust the
horizontal level to slower than 50ms/div, and the oscilloscope will be in ROLL mode.
At this point, the trigger system will not work, the oscilloscope will be continuous on
the screen to draw the waveform of the voltage - time chart.
Extended Window
• Used to enlarge waveform, the extended waveform setting cannot be slower than
main waveform setting.
• Press the HORI MENU button in the control panel. Press F1 to select the window
scale.
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