Chapter 2 VirtualBench-Scope
Getting Started with VirtualBench 2-2
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National Instruments Corporation
The front panel of VirtualBench-Scope has the following features:
•Channel Selector—selects a waveform for display on the Graphics
display.
•Channel Settings—adjusts the vertical sensitivity of the selected
channel. Turning the knob clockwise increases the sensitivity (each
vertical division represents a smaller voltage value).
•Timebase—allows you to change the timebase setting. Turning the
knob clockwise results in a shorter time period displayed in the
Graphics display (each horizontal division represents a shorter time
period).
•Graphics Display—displays waveforms.
•Vertical Slider—adjusts voltage offset for each channel. This slider
is useful when you want to view multiple waveforms in the
Graphics display.
•Trigger Settings Group—controls the conditions required for a
signal to be acquired; for example, whether to wait for a digital
trigger before acquiring data, or whether to acquire data in free-run
mode (no triggering).
• Main Control Bar Buttons
–Run—acquires data continuously. When clicked off, the
VirtualBench-Scope is placed in idle mode.
–Single—instructs VirtualBench-Scope to perform a
single-sweep acquisition.
–Auto Setup—starts configuration of the scope for the best
timebase, volts per division, and trigger setting for each
channel currently selected with the channel selector.
–Mode—sets the mode of the scope to either Volts versus Time
or X versus Y mode.
–X Scroll—scrolls along the X-axis or time axis.
Note: Please refer to the VirtualBench-Scope Online Help for additional help on
the front panel items.
06Chap02.fm Page 2 Friday, February 28, 1997 3:21 PM