Vertical Controls 3
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 57
To adjust the vertical scale
You can do one of these things:
• Turn the large vertical scale knob marked to set the vertical scale
(units/division) for the selected channel.
• Use the Scale controls in the waveform dialog box (that you can open by
selecting the waveform badge or by choosing Sources > (waveform)... from the
main menu).
The vertical scale knob changes the analog channel scale in a 1-2-5 step
sequence (with a 1:1 probe attached) unless fine adjustment is enabled (see
"To
change the vertical scale knob's coarse/fine adjustment setting"
on page 59).
The analog channel Units/Div value is displayed in the status line.
The default mode for expanding the signal when you adjust the vertical scale is
expansion about the ground level of the waveform; however, you can change this
to expand about the center of the display. See
"To choose "expand about" center
or ground"
on page 279.
To adjust the vertical position
You can do one of these things:
• Turn the small vertical position knob ( ) to move the selected channel's
waveform up or down on the display.
• Use the Offset controls in the waveform dialog box (that you can open by
selecting the waveform badge or by choosing Sources > (waveform)... from the
main menu).
The offset voltage value represents the voltage difference between the vertical
center of the display and the ground level ( ) icon. It also represents the voltage
at the vertical center of the display if vertical expansion is set to expand about
ground (see
"To choose "expand about" center or ground" on page 279).
To specify channel coupling
Coupling changes the channel's input coupling to either AC (alternating current) or
DC (direct current).
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