Extech Instruments MS420 User Manual page 17

7. Press ◄ (yellow) or ► (yellow) to adjust the time base horizontal position and
press ▲ (yellow) or ▼ (yellow) to adjust the trigger horizontal position for Channel 2.
8. Press OPTION again to display the following:
— Time Base
— Trig 1
Figure 9:
9. Press ◄ (yellow) or ► (yellow) to adjust the main time base and press ▲
(yellow) or▼ (yellow) to adjust the trigger horizontal position for Channel 1.
10. Press OPTION again to return to step 6 above.
Glossary of Terms
 Vertical scale factor: The voltage amplitude represented by a division in the
vertical direction of the display area, through the adjustment of which the user can
amplify or attenuate the signal and thus regulate the signal amplitude so that it is
placed in the expected measurement range.
 Vertical zero position: Ground point, through the adjustment of which the user
can regulate the display position of the waveform on the screen.
 Main time base: The time value represented by a division in the horizontal
direction of the display area.
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