Filter
Top Products
©
National Instruments Corporation 7-1 Getting Started with VirtualBench
Chapter
7
VirtualBench-Arb
In Windows 3.1x, you launch VirtualBench-Arb (Arbitrary Waveform
Generator) by double-clicking on the Arb icon in the VirtualBench
program group. In Windows 95/NT 4.0, you launch VirtualBench-Arb
by selecting Start»Programs»VirtualBench»VirtualBench-Arb.
Waveform Generator Front Panel Features
The key features of the Waveform Generator front panel of
VirtualBench-Arb are:
• Waveform Name/Load Waveform Control—shows the name of
the waveform, if any, that currently loads into the channel buffer.
Select this window to load from a file to a waveform.
• Play Mode—plays the waveform continuously. When deselected,
plays the waveform only once.
• Update Rate—controls the update rate of the waveform. This
control does not affect the play speed of waveform files (
.wfm) but
does affect waveform quality. With text and sound (
.wav) files, the
update rate determines the play speed by controlling the number of
samples of the waveform that are played per second.
• Frequency Control—modifies the rate at which waveform files
(
.wfm) are played. The waveform rate is multiplied by this value to
determine the actual play speed. Text and sound (
.wav
) files are
unaffected by this control.
Waveform
Name/Load
Waveform
Frequency
Control
Update
Rate
Amplitude Offset Phase
Play Mode
Play/Stop
06Chap07.fm Page 1 Friday, February 28, 1997 3:22 PM