VISA 接口

与支持 VISA 标准的仪器通信

您可以将 VISA 接口与多种类型的接口一起使用，例如 TCP/IP、USB、GPIB 等。您需要使用确定通信接口类型的参数创建一个 visadev 对象。例如，对于 VISA-GPIB 对象，visadev 函数采用包含板索引和地址的 VISA 资源字符串。

函数

全部展开

连接和配置

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

读取和写入

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

VISA 串行控制引脚和存储器

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

属性

visadev Properties

Access VISA resource properties (自 R2021a 起)

App

VISA 通信管理器

Connect to and communicate with instruments over VISA (自 R2022b 起)

模块

VISA	Communicate with VISA resources (自 R2023b 起)

主题

连接并配置 VISA 接口

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.

与 VISA 资源通信

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.

疑难解答

VISA 接口故障排除

对 VISA 接口进行故障排除。

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.

精选示例

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.

打开实时脚本

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®.