National Instruments Measurement Studio User Manual

Page 60

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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.

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