Using the Instrument Control Toolbox
1MA171_5e Rohde & Schwarz How to use Rohde & Schwarz Instruments in MATLAB
®
6
2 Using the Instrument Control Toolbox
The MATLAB Instrument Control Toolbox extends MATLAB
®
to remote-control test or
measurement equipment via GPIB (IEEE 488.2), TCP/IP (VXI-11, …), etc. This makes
it possible to transfer data, e.g. writing instrument settings or transferring generated I/Q
waveform files from the instrument to the PC via various interfaces.
The Instrument Control Toolbox of 32-bit MATLAB
®
versions offers tools for generating
MATLAB
®
code out of the 32-bit VXIplug&play instrument driver. Furthermore wizards
can be used to create MATLAB
®
source code very easily.
The Instrument Control Toolbox supports IVI and VXIplug&play instrument drivers.
This application note focuses on the latter case. To utilize VXIplug&play instrument
drivers, the instrument control toolbox generates a MATLAB
®
instrument driver file
2
out
of the VXIplug&play instrument driver’s DLL. This step is described in section 2.2.
Prerequisites
The MATLAB
®
command instrhwinfo enables you to verify a proper recognition of your
installed VISA library. Using 'visa' as supported interface, as highlighted below, is
mandatory. Your command window output should look like this:
>> instrhwinfo
ans =
MATLABVersion: '7.9 (R2009b)'
SupportedInterfaces: {'gpib' 'serial' 'tcpip' 'udp' 'visa'}
SupportedDrivers: {'matlab' 'ivi' 'vxipnp'}
ToolboxName: 'Instrument Control Toolbox'
ToolboxVersion: '2.9 (R2009b)'
Further information can be gathered by querying your VISA details:
>> instrhwinfo('visa')
ans =
InstalledAdaptors: {'ni'}
JarFileVersion: 'Version 2.9.0'
2.1 Installing VXIplug&play Instrument Drivers
Having an installed VXIplug&play instrument driver on the host PC is a prerequisite
before installing the MATLAB
®
instrument driver by creating an MATLAB
®
instrument
driver file (extension: .mdd).
Rohde & Schwarz VXIplug&play instrument drivers and installation manuals are
available in the Drivers download area on the Rohde & Schwarz website:
http://www.rohde-schwarz.com/drivers
.
2
The default extension for a MATLAB
®
instrument driver file is mdd.
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