Glossary

scan

scan interval

scan rate

SCC

SCXI

sensor

signal conditioning

signal source signals

single trigger mode

single-buffered

single-ended input

One or more analog or digital input samples. Typically, the number of input samples in a scan is equal to the number of channels in the input group. For example, one pulse from the scan clock produces one scan which acquires one new sample from every analog input channel in the group.

Controls how often a scan is initialized; is regulated by the AI Sample Clock signal.

Reciprocal of the scan interval.

Signal Conditioning Carriers—A compact, modular form factor for signal conditioning modules.

Signal Conditioning eXtensions for Instrumentation—The National Instruments product line for conditioning low-level signals within an external chassis near sensors so that only high-level signals are sent to DAQ devices in the noisy PC environment.

A device that responds to a physical stimulus (heat, light, sound, pressure, motion, flow, and so on), and produces a corresponding electrical signal. Primary characteristics of sensors are sensitivity, frequency range, and linearity.

1.Electronic equipment that makes transducer or other signals suitable in level and range to be transmitted over a distance, or to interface with voltage input instruments.

2.The manipulation of signals to prepare them for digitizing.

A generic term for any instrument in the family of signal generators.

Signals are waveforms containing information. Although physical signals can be in the form of mechanical, electromagnetic, or other forms, they are most often converted to electronic form for measurement.

When the arbitrary waveform generator goes through the staging list only once.

Describes a device that acquires a specified number of samples from one or more channels and returns the data when the acquisition is complete.

A circuit that responds to the voltage on one input terminal and ground. See also differential input.