72 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
2 Horizontal Controls
To change the time/div for the Zoom window, turn the horizontal scale (sweep
speed) knob. As you turn the knob, the zoomed window time/div is highlighted in
the status line above the waveform display area. The Horizontal scale (sweep
speed) knob controls the size of the box.
The Horizontal position (delay time) knob sets the left-to-right position of the
zoom window. The delay value, which is the time displayed relative to the trigger
point) is momentarily displayed in the upper-right portion of the display when the
delay time ( ) knob is turned.
Negative delay values indicate you're looking at a portion of the waveform before
the trigger event, and positive values indicate you're looking at the waveform after
the trigger event.
To change the time/div of the normal window, turn off Zoom; then, turn the
horizontal scale (sweep speed) knob.
For information about using zoom mode for measurements, refer to “To isolate a
pulse for Top measurement" on page 252 and “To isolate an event for frequency
measurement" on page 258.
To change the horizontal scale knob's coarse/fine adjustment
setting
1 Push the horizontal scale knob (or press [Horiz] > Fine) to toggle between fine
and coarse adjustment of the horizontal scale.
When Fine is enabled, turning the horizontal scale knob changes the time/div
(displayed in the status line at the top of the display) in smaller increments. The
time/div remains fully calibrated when Fine is on.
When Fine is turned off, the Horizontal scale knob changes the time/div setting in
a 1-2-5 step sequence.
To position the time reference (left, center, right, custom)
Time reference is the reference point on the display for delay time (horizontal
position).
1 Press [Horiz].
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