B+K precision 2510B Series, Руководство пользователя, Страница: 27 / 184

Horizontal System 27
To reduce the delay press the < button.
To increase the delay press the > button.
Pressing the shift + horizontal position buttons resets the horizontal delay to zero.
2.2 Roll Mode
In Roll mode the waveform moves slowly across the screen from right to left. It only operates on the time
bases settings of 50 ms/div or slower. If the current time base settings are faster than the 50 ms/div limit,
it will be set to 50 ms/div when
Roll mode is entered.
To enable the Roll mode:
1. Press the Acquire.
2. Press the F5 soft key to enter the second page of the acquire menu.
3. Press the F3 soft key to enable/disable Roll mode.
In Roll mode there is no trigger. The fixed reference point on the screen is the right edge of the screen and
refers to the current moment in time. Events that have occurred are scrolled to the left of the reference
point. Since there is no trigger, no pre-trigger information is available.
To pause the display in Roll mode press the Run/Stop button. To clear the display or restart an acquisition
in Roll mode, press the Run/Stop button again.
Use Roll mode on low-frequency waveforms to yield a display much like a strip chart recorder. It allows
the waveform to roll across the display.