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unipolar
update
UPDATE
update rate
upstream
USB
V
V
V
CC
VDC
VDMAD
V
EXT
VI
V
IH
V
IL
V
IN
VISA
© National Instruments Corporation
a signal range that is always positive (for example, 0 to +10 V)
the output equivalent of a scan. One or more analog or digital output
samples. Typically, the number of output samples in an update is equal to
the number of channels in the output group. For example, one pulse from
the update clock produces one update which sends one new sample to every
analog output channel in the group.
update signal
the number of output updates per second
the direction data flow towards the host computer
Universal Serial Bus
volts
+5 V power supply
volts direct current
virtual DMA driver
external volt
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
volts, input high
volts, input low
volts in
a new driver software architecture developed by National Instruments to
unify instrumentation software for GPIB, DAQ, and VXI. It has been
accepted as a standard for VXI by the VXIplug&play Systems Alliance.
G-21
Glossary
DAQPad-6507/6508 User Manual
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