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Glossary
Measurement Studio User Manual G-8 ni.com
numeric edit control A control used to display and edit numeric values.
O
OCX OLE Control eXtension. Another name for ActiveX controls, reflected by
the
.ocx file extension of ActiveX control files.
OLE Object Linking and Embedding. See ActiveX.
OPC
OLE for Process Control. An industry standard based on ActiveX and COM
technologies that enables you to create a single client application that can
communicate with disparate devices. Visit
www.opcfoundation.org
.
oscilloscope Measurement instrument widely used in high-speed testing applications,
such as telecommunication physical layer testing, video testing, and
high-speed digital design verification.
P
PCI Peripheral Component Interconnect. High-performance expansion bus
architecture commonly found in PCs.
PID Proportional-Integral-Derivative. A three-term control mechanism
combining proportional, integral, and derivative control. You might use a
PID algorithm to control processes such as heating and cooling systems,
fluid level monitoring, flow control, and pressure control.
plot 1. Trace (data line) on a graph representing the data in one row or column
of an array.
2. To display a new set of data while deleting any previous data on the
graph.
point Structure that contains two 16-bit integers that represent horizontal and
vertical coordinates.
property Attribute that defines the appearance or state of an object. The property can
be a specific value or another object with its own properties and methods.
For example, a value property is the color (property) of a plot (object),
while an object property is a specific Y axis (property) on a graph (object).
The Y axis itself is another object with properties, such as minimum and
maximum values.