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Glossary
© National Instruments Corporation
G-13
thermocouple
a temperature sensor created by joining two dissimilar metals; the
junction produces a small voltage as a function of the temperature
junction produces a small voltage as a function of the temperature
TIO
timing I/O
t
off
an offset (delayed) pulse; the offset is t nanoseconds from the falling
edge of the CONVERT* signal
edge of the CONVERT* signal
t
out
output delay time
t
P
pulse period
TRIG
trigger signal
trigger
any event that causes or starts some form of data capture
t
sc
source clock period
t
sp
source pulse width
TTL
transistor-transistor logic
t
w
pulse width
U
UI
update interval counter
UISOURCE
update interval counter clock signal
unipolar
a signal range that is always positive (for example, 0 to +10 V)
UPDATE
update signal
V
V
volts
VDC
volts direct current
VI
virtual instrument—(1) a combination of hardware and/or software
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument (2) a LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument (2) a LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program