Keysight CX3300 User’s Guide, Edition 4 53
Using the CX3300
Adjusting the Horizontal Scale and Timebase Position
Adjusting the Horizontal Scale
• To stretch the waveform horizontally (fewer seconds per division), turn the
horizontal scale knob clockwise. To shrink it horizontally (more seconds per
division), turn the knob counter-clockwise.
• Pressing the knob enables or disables the fine mode which provides 1/10
setting resolution.
• Double-cl
icking the horizontal scale area below or above the graph opens the
dialog box which allows you to specify the X-axis scale.
• Turning the mouse wheel on the horizontal scale area stretches or shrinks the
waveform.
Adjusting the Horizontal Timebase Position
• To move the timebase to the right, turn the horizontal position knob
clockwise. To move it to the left, turn the knob counter-clockwise.
Moving th
e timebase to the right shows more of the pre-trigger data (data
acquired before the trigger event). Moving the waveform to the left shows
more of the post-trigger data.
• Pressing the knob sets the timebase (0 second) to the timebase reference
position.
• Clicking and dragging the waveform or the graph moves the waveform on the
graph if the Move/Zoom icon is Move.
Magnifying a Part of the Waveform
• To magnify/demagnify the waveform, turn the mouse wheel on the X-axis.
• Clicking and dragging the graph magnifies the waveform if the Move/Zoom
icon is Zoom.
• To enable/disable zoom, press the
Zoom key in the horizontal control.
When the
Zoom key lights, the graph area splits into two regions. The top one
is the main timebase. The bottom is the zoomed timebase, which represents
an expansion of the acqui
red waveform data. Square on the main view
indicates the zoomed waveform.
The horizontal control knobs change how the waveform is shown in the zoom
view. The horizontal scale knob changes the amount of magnification. The
horizontal position knob moves the square.
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