To use. Click in a Horizontal Controls entry box to map it to one of the multipurpose knobs; then use the knob to change the
value. You can also use the pop-up keypad to enter a value.
Horizontal controls
Use this control to set the sample rate for the waveform record.
In general, higher sampling rates produce more accurate
measurements.
Use this control to adjust the scale of live waveforms, including
math waveforms. Scale units depend on the waveform type; in
most cases the horizontal units will be time, but they can also
be frequency.
TIP. Use the dedicated front-panel Horizontal Scale knob to
change the horizontal scale.
Use this control to define the length of the waveform record.
The record length is the number of sample points that make up
the waveform record.
NOTE. Record lengths of less than 1000 samples are not
supported.
Click this button to maximize the updated rate by setting a
record length limit in the Set Record Length Limit dialog box.
This feature is available in Automatic mode only.
Behavior. When you change the record length, you can choose to hold either the sample rate or the horizontal scale constant.
The remaining variables will change in response to the record length changes.
Maximum record length depends on the following:
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The amount of memory.
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The ability to combine the memory length of unused channels.
NOTE. Hi Res and Avg modes require twice the acquisition memory of other acquisition modes. When you select these modes,
the instrument sets the record length accordingly to keep it from running out of memory.
Delay mode.
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When Delay Mode is Off the scale expands or contracts around the trigger point.
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When Delay Mode is On the scale expands or contracts around the horizontal reference point.
Horizontal zoom. You can use the Horizontal Zoom control window to change the horizontal scale and position of reference
waveforms within the Zoom window(s).
What do you want to do next?
Learn more about the Horizontal Setup controls.
Oscilloscope reference
776 DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series
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