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Interfaccia VISA

Comunicare con strumenti che supportano lo standard VISA

È possibile utilizzare l'interfaccia VISA con diversi tipi di interfacce, come TCP/IP, USB, GPIB e altre. Si crea un oggetto visadev utilizzando argomenti che determinano il tipo di interfaccia tramite cui si comunica. Ad esempio, per un oggetto VISA-GPIB, la funzione visadev accetta una stringa di risorse VISA che include l'indice e l'indirizzo della scheda.

Funzioni

espandi tutto

Connetti e configura

`visadevlist`	List available VISA resources (Da R2021a)
`visadev`	Create connection to device using VISA (Da R2021a)
`configureTerminator`	Set terminator for ASCII string communication with VISA resource (Da R2021a)
`visastatus`	Check status of VISA resource (Da R2021a)
`visatrigger`	Send trigger to GPIB or VXI instruments (Da R2021a)
`visadevfind`	Find VISA device connections (Da R2024a)

Lettura e scrittura

`read`	Read data from VISA resource (Da R2021a)
`readline`	Read line of ASCII string data from VISA resource (Da R2021a)
`readbinblock`	Read one binblock of data from VISA resource (Da R2021a)
`write`	Write data to VISA resource (Da R2021a)
`writeline`	Write line of ASCII data to VISA resource (Da R2021a)
`writebinblock`	Write one binblock of data to VISA resource (Da R2021a)
`writeread`	Write command to VISA resource and read response (Da R2021a)
`flush`	Clear buffers for communication with VISA resource (Da R2021a)

Pin di controllo e memoria VISA-Serial

`setDTR`	Set serial DTR pin
`setRTS`	Set serial RTS pin
`getpinstatus`	Get serial pin status

Proprietà

visadev Properties

Access VISA resource properties (Da R2021a)

App

VISA Explorer

Connect to and communicate with instruments over VISA (Da R2022b)

Blocchi

VISA	Communicate with VISA resources (Da R2023b)

Argomenti

Connettiti e configura le interfacce VISA

Get Started with VISA
Get started with the Virtual Instrument Standard Architecture (VISA) interface.
Get Started with TCP/IP Interface for VXI-11 and HiSLIP
Establish a connection between MATLAB^® and your instrument using the VISA-TCP/IP interface.
Get Started with TCP/IP Socket Interface
Establish a connection between MATLAB and your instrument using the VISA-Socket interface.
Get Started with USB Interface
Establish a connection between MATLAB and your instrument using the VISA-USB interface.
Get Started with GPIB Interface
Establish a connection between MATLAB and your instrument using the VISA-GPIB interface.
Get Started with Serial Port Interface
Establish a connection between MATLAB and your instrument using the VISA-Serial interface.
Get Started with VXI and PXI Interfaces
Establish a connection between MATLAB and your instrument using the VISA-VXI or VISA-PXI interface.

Comunicare con la risorsa VISA

Write and Read ASCII Data Using VISA
Explore ASCII write and read operations with a VISA object.
Write and Read Binary Data Using VISA
Explore binary write and read operations with a VISA object.
Send Trigger to Instrument
Send the trigger command to your VISA resource.
Execute Serial Polls
Execute a serial poll to check the status of your VISA resource.
Transition Your Code to visadev Interface
Connect to a VISA device using visadev instead of visa.

Risoluzione dei problemi

Risoluzione dei problemi dell'interfaccia VISA

Risolvere i problemi dell'interfaccia VISA.

Resolve VISA Connection Errors

Troubleshoot connecting to a device using VISA.

Resolve VISA Warning: Unable to Read Any Data

Troubleshoot when you receive some data and you get the warning message: 'visadev' unable to read any data.

Resolve VISA Warning: Unable to Read All Data

Troubleshoot when you receive some data and you get the warning message: 'visadev' unable to read all requested data.

Esempi in primo piano

Generate a Swept Sinusoid Using VISA and Capture Waveform Using Quick-Control Oscilloscope

Use a function generator to generate a swept sinusoid waveform and also how to capture it using an oscilloscope.

Apri live script

5G NR Waveform Acquisition and Analysis

Generate a 5G NR test model (NR-TM) waveform using the 5G Waveform Generator (5G Toolbox) app and download the generated waveform to a Keysight™ vector signal generator for over-the-air transmission using the Instrument Control Toolbox™ software. The example then captures the transmitted over-the-air signal using a Keysight signal analyzer and analyzes the signal in MATLAB®.

Apri live script

Read Waveform Data from Keysight DSO-X 1204A Oscilloscope Using VISA Block

Use the VISA block to communicate with a Keysight® Technologies DSO-X 1204A oscilloscope.

Apri live script

Visualizing Signal Data and 5G Wireless Measurements in an App

Create a custom app for visualizing signal data and performing 5G wireless measurements using App Designer

Apri live script