National Instruments Data Acquisition Device NI USB-621x - Manual (Page 174)

Glossary
NI USB-621x User Manual G-16 ni.com
V
m
Measured voltage.
V
OH
Volts, output high.
V
OL
Volts, output low.
V
out
Volts out.
V
s
Signal source voltage.
virtual channel See channel .
W
waveform 1. The plot of the instantaneous amplitude of a signal as a function
of time.
2. Multiple voltage readings taken at a specific sampling rate.