Glossary
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National Instruments Corporation
G-7
scan
a collection of samples, usually with each sample coming from a different
input channel
SCANCLK
scan clock signal used to increment to the next channel after each DAQ
device analog-to-digital conversion
SCXI
Signal Conditioning eXtensions for Instrumentation—the National
Instruments product line for conditioning low-level signals within an
external chassis near sensors so only high-level signals are sent to DAQ
devices in the noisy PC environment
SCXIbus
SCXIbus refers to the backplane in the chassis. A signal on the backplane
is referred to as the SCXIbus <signal name> line (or signal). The SCXIbus
descriptor may be omitted when the meaning is clear. Descriptions of many
SCXIbus signals are in Chapter 3,
.
SERCLK
serial clock signal
SERDATIN
serial data input signal
SERDATOUT
serial data output signal
signal conditioning
the manipulation of signals to prepare them for digitizing
Slot 0
refers to the power supply and control circuitry in the SCXI chassis
SLOT0SEL*
Slot 0 select signal
T
TTL
transistor-transistor logic
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