National Instruments DAQPad-6508, Руководство пользователя

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© National Instruments Corporation G-21 DAQPad-6507/6508 User Manual
Glossary
unipolar a signal range that is always positive (for example, 0 to +10 V)
update 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 update signal
update rate the number of output updates per second
upstream the direction data flow towards the host computer
USB Universal Serial Bus
V
V volts
V
CC
+5 V power supply
VDC volts direct current
VDMAD virtual DMA driver
V
EXT
external volt
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
V
IH
volts, input high
V
IL
volts, input low
V
IN
volts in
VISA 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.