4.) Press ◄ (OPTION) or ►(OPTION) to adjust time base horizontal position, press “V” key to "zero" the horizontal
position; press ▲(OPTION) or ▼(OPTION) to adjust trigger level position, press “R” key to "zero" the trigger
level position.
5.) Press OPTION again to back up operation 1.
Term interpretation
Vertical scale factor: It stands for the voltage amplitude represented by a division in the
vertical direction of the display area, through the adjustment of which you can amplify or
attenuate the signal and thus regulate the signal amplitude into the expected measurement
range.
Vertical zero position: It is referred to as the grounding datum point, through the adjustment
of which you can regulate the display position of the waveform on the screen.
Main time base: It means the time values represented by a division in the horizontal direction
of the display area.
Trigger horizontal position: It means the time deviation between the actual trigger point and
the screen central line, which will be displayed as 0 at the center point of the screen.
Trigger level position: It represents the voltage deviation between the actual trigger level and
the zero position of the triggering signal source channel.
5.6. Recall factory settings
If you want to reset the Oscilloscope to the factory settings, do the following:
1.) Press MENU key and the function menu appears on the right side of the screen
2.) Press the MENU ▲ or MENU ▼ key to select FUNCTION setting and three options are visible at the bottom of the
screen.
3.) Press F1 key to select "Recall Factory" to recall the factory settings.
4.) Press F2 key to select "Auto calibration". If the ambient temperature variation is up to or larger than 5 Celsius
degree, the Auto calibration function should be performed. But this will not affect the using and capability by the
heat from LCD and electronic component.
See the following Figure 8:
Figure 8: Reset the Oscilloscope
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