National Instruments 373392C-01 User Manual download pdf (Page 32)

Chapter 2 Measurement Studio .NET Class Libraries

Measurement Studio User Manual 2-14 ni.com

•An EngineeringFormatInfo class that defines a custom formatter

to format numeric values as strings with engineering notation and

International System of Units (SI) prefixes and symbols.

•A

PrecisionWaveformTiming class that you can use to represent

the timing of an analog or digital waveform that is accurate to the

nearest 2-64 second.

•An

AnalogWaveformCollection class that contains a strongly

typed collection of

AnalogWaveform<TData> objects; one object for

each channel and record combination. You can access these objects

through the 1D indexer or the 2D indexer.

Tip For more detailed information about the Common class library, refer to the

National Instruments section in the NI Measurement Studio Help.

Data Transfer

You can use the NetworkVariable class library or the DataSocket class

library to transfer live measurement data between applications over a

network. You can use NetworkVariable or DataSocket to exchange

different types of data between Measurement Studio, LabVIEW,

LabWindows/CVI, and other applications that support NI-Publish

Subscribe Protocol (

psp:). NetworkVariable is the preferred method for

transferring data between these applications, and, in these cases,

NetworkVariable supersedes DataSocket. You can also use

NetworkVariable and DataSocket to exchange different types of data

between OLE for Process Control (

opc:) servers. Exchanging data

between Measurement Studio applications and OPC servers with

NetworkVariable requires LabVIEW DSC Run-Time System. Use

DataSocket to communicate directly with an OPC server.

Network Variable

The Measurement Studio Network Variable .NET class library includes

three namespaces:

NationalInstruments.NetworkVariable,

NationalInstruments.NetworkVariable.WindowsForms, and

NationalInstruments.NetworkVariable.WebForms. You use the

Network Variable class library to transfer live measurement data between

applications and servers over the network. You use WindowsForms and

WebForms data sources to expose Network Variable data items that you

can bind to properties of a Windows Forms or a Web Forms control.

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