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Glossary
NI 2590/2591 User Manual G-4 ni.com
R
random scanning scanning the channels in a mux in any order
reflective switch a switch architecture in which the unused channels are NOT terminated in
the characteristic impedance of the system. The unused channels are open
circuits.
relay a switch that connects or disconnects the signal to a common through the
physical movement of a metal arm
rms root mean square—the square root of the average value of the square of the
instantaneous signal amplitude; a measure of signal amplitude
S
s seconds
scan the data acquisition of signals connected to multiple channels of a
multiplexer. Typically, the measurement device uses a trigger to advance
the multiplexer to the next channel in the scan.
scan list a list of channels supplied to NI-Switch that indicates the order in which
channels will be scanned
scanner advanced
trigger
the trigger generated by the switch module when scanning. The trigger
occurs after the switch module has closed a switch and the switch has
settled.
SCC switch control circuitry
SMB sub-miniature snap-on connector
soft front panel a graphical program included with NI-Switch that you can use to
interactively control the switch
T
trigger any event that causes or starts some form of data capture
TTL Transistor-Transistor Logic