MATLAB: Can’t I use the Keysight instrument with Data Acquisition Toolbox

Data Acquisition Toolbox

I am trying to control a Keysight U2331a with MATLAB (R2020a). I am able to send text commands to the device using Instrument Control Toolbox, but I would also like to read data from the device using Data Acquisition Toolbox. When I try to find available hardware and receive the following error:

>> d=daq.getDevices
d =
No data acquisition devices available.
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Why isn't this device recognized by Data Acquisition Toolbox, and how do I resolve this issue?

Best Answer

The reason that you are unable to connect to your device using these commands is that these commands are for our Data Acquisition Toolbox (DAQ), for which Keysight instruments are only supported in the 32-bit version of MATLAB (and DAQ). For more information, see the following MathWorks support page for DAQ:

https://www.mathworks.com/products/data-acquisition/supported/agilent.html

If you wish to control this instrument and read data from it with your current MATLAB installation (R2020a), you can do so using Instrument Control Toolbox. The following documentation pages provide information about how to read data from this device using Instrument Control Toolbox:

Keysight Instruments and MATLAB: General Information/Getting Started

https://www.mathworks.com/products/instrument/supported/keysight.html

VISA (USB) Communication for Instrument Control Toolbox: Functions

https://www.mathworks.com/help/instrument/interface-based-communication.html

Related Solutions

MATLAB: Which National Instruments NI DAQ device models were supported in 32-bit MATLAB R2015b with the Data Acquisition Toolbox Legacy interface

Refer to attached file "R2015b 32-bit legacy NI DAQ devices.pdf" for a list of NI DAQ device models which were supported by the Legacy interface in Data Acquisition Toolbox (32-bit MATLAB R2015b).

MATLAB: Does the Data Acquisition Toolbox support traditional NI-DAQ drivers

Beginning with Data Acquisition Toolbox 2.13 (R2008b), you will receive the following warning when using the Traditional NI-DAQ adaptor provided by the Toolbox:

Warning: Support for the National Instruments Traditional NI-DAQ driver will not be provided in future releases of Data Acquisition Toolbox. Instead, it will be available as a separate download. Consider upgrading to the NI-DAQmx version if it supports your hardware. See Solution 1-5LI9NF for details.

This warning has no immediate impact but is intended to advise you for future planning. Once this adaptor is available on MATLAB Central, MathWorks will not be making updates to the adaptor. The source code for the adaptor will be provided as part of the MATLAB Central download.

Note that there is no change for support of devices that use the NI-DAQmx driver and this change is limited to devices supported solely by the Traditional NI-DAQ driver.

You may disable this warning by typing:

warning('off', 'daq:<objecttype>:adaptorobsolete');

where "objecttype" is one of:

analoginput

analogoutput

digitalio

For example:

warning('off', 'daq:analoginput:adaptorobsolete');

Best Answer

Related Solutions

MATLAB: Which National Instruments NI DAQ device models were supported in 32-bit MATLAB R2015b with the Data Acquisition Toolbox Legacy interface

MATLAB: Does the Data Acquisition Toolbox support traditional NI-DAQ drivers

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