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university:tools:m1k:alice:oscilloscope-x-y-user-guide [27 Jan 2021 22:37] – use wp> interwiki links Robin Getzuniversity:tools:m1k:alice:oscilloscope-x-y-user-guide [25 Jun 2021 16:29] – Add future Roll Mode info Doug Mercer
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 <WRAP centeralign>Figure 1, ALICE Desktop main Oscilloscope window</WRAP> <WRAP centeralign>Figure 1, ALICE Desktop main Oscilloscope window</WRAP>
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 +<note>Roll Feature Available in Fall 2021 release</note>
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 +There are two sweeping modes in the time domain display. The conventional time per Div based view and a rolling mode. The Roll Mode in a digital storage oscilloscope uses a display different from that of the usual time-based view. While viewing a very low-frequency periodic signal in the usual time per Div based view the screen up dates, is redrawn, with the next new trace only after a screen’s worth of data samples are captured. This can take a few seconds for 100 mS/Div or greater time bases. Rather, in Roll Mode the trace is redrawn continuously and moves from right to left along the time-axis as new samples are taken, resembling what you would see in an analog strip chart. The time axis, rather than starting at the triggering point as in conventional mode, remains static and the waveform moves or rolls. Accordingly, in roll mode, the trace enters at the right of side of the display and travels in a stately fashion across the grid at a speed that is determined by how fast the computer can update (redraw) the display. This will vary from computer to computer based on the speed of the machine you are running the software on. The Roll-Off and Roll-On button between the Time base Entry and Curves Drop down Menu toggles between the Sweep Modes.
  
 Many of the drop down menus on the main oscilloscope screen and the screens for the other instruments include accelerator keys, indicated by () around the accelerator keyboard character next to the menu item. Typing one of these characters while the mouse cursor is inside the graphics drawing area will invoke that menu function. For example typing 1 or 2 will toggle on and off the CA-V and CB-V traces. Many of the drop down menus on the main oscilloscope screen and the screens for the other instruments include accelerator keys, indicated by () around the accelerator keyboard character next to the menu item. Typing one of these characters while the mouse cursor is inside the graphics drawing area will invoke that menu function. For example typing 1 or 2 will toggle on and off the CA-V and CB-V traces.
university/tools/m1k/alice/oscilloscope-x-y-user-guide.txt · Last modified: 17 Jan 2023 20:03 by Doug Mercer

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