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Horizontal
Scale Knob
Sets the timebase (horizontal sweep speed) in units
of one division per indicated time unit. Press the
knob to enter Zoom mode.
Horizontal Scale Knob
Turn the Horizontal Scale knob to adjust the horizontal time base. Turn clockwise to reduce the
time per division and counterclockwise to increase.
The time base information at the upper left corner of the screen will change accordingly during
the adjustment. The range of the horizontal scale is from 1 ns/div to 50 s/div.
The Horizontal Scale knob works (in the Normal time mode) while acquisitions are running or
when they are stopped. When in run mode, adjusting the horizontal scale knob changes the
sample rate. When stopped, adjusting the horizontal scale knob lets you zoom into the acquired
data.
Adjust Trigger Delay
Turn the Horizontal Position knob to adjust the trigger delay of the waveform. This will cause the
displayed waveforms to move left or right. The delay number at the top of the screen changes
accordingly. Press this knob to reset the trigger delay to zero.
Changing the delay time moves the trigger point (blue inverted triangle at the top of the screen)
horizontally and indicates how far it is from the time at the center of the screen.
All events displayed left of the trigger point happened before the trigger occurred. These events
are called pre-trigger information and they show the events that led up to the trigger point.
Everything to the right of the trigger point is called post-trigger information and these are events
that occurred after the trigger. The amount of delay range (pre-trigger and post-trigger
information) available depends on the time/div selected and memory depth.
The position knob works (in the Normal time mode) while acquisitions are running or when they
are stopped.
Roll mode
Press the Roll button to enter roll mode.
In Roll mode, the waveform moves slowly across the screen from right to left. It operates only on
time base settings of 50 ms/div and slower. If the current time base setting is faster than the 50
ms/div limit, it will be set to 50 ms/div when the Roll button is pressed.
