MATLAB: Trouble interafcing FS300 SpecAn using USB interface and NI VISA 5.0.3 with Matlab

fs300Instrument Control Toolboxni visa usbusbvisavxipnp

HI, I'm stuck with a problem in interfacing the Rhode & Schwarz FS300 spectrum analyser to Matlab through NI VISA 5.0.3. I'm using Matlab 2011a. Create new Interface option in tmtool doesn't shows my instrument connected to the USB drive. The NI VISA interactive control shows my USB device, but listed as USB RAW. I beleive I need to get this listed as INSTR?

Any help ?

Thanks, Bala

Best Answer

If you plan to communicate with the instrument using low level SCPI commands, via VISA-USB object - it has to be of USBTMC (Test & Measurement) class i.e. the VISA Resource Address must end with ::INSTR.

However, if you plan to communicate with the instrument using the industry standards such as VXIPnP or IVI - you can use the USB-RAW VISA Resource Address. Here's more help on how to use these drivers in MATLAB.

Hope this helps,

-Ankit

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MDD files can be of multiple types. For example:

1. MATLAB Interface Instrument Driver 2. MATLAB VXIPnP Instrument Driver 3. MATLAB IVI-C Instrument Driver 4. MATLAB IVI-COM Instrument Driver

Depending on the MDD file type the second argument to the icdevice function changes.

For MATLAB Interface Instrument Driver the second argument to the icdevice function should be an interface object (and hence MDD is called "Interface" Instrument Driver).

However, if the MDD is any of the other three types, the second argument to the icdevice function should be the VISA Resource Address (In your case: USB0::2391::65519::CN03225604::0::INSTR)

If you created agn9320ni.mdd from a VXIPnP driver, then you need to pass in the VISA Resource Address as the second argument:

 d = icdevice('agn9320ni.mdd','USB0::2391::65519::CN03225604::0::INSTR');

More information on the MDD types can be found at the online help. Here's more information on how to use industry standard drivers.

Hope this helps,

-Ankit

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No, that oscilloscope does not have a wireless interface. You will need to use one of the available interfaces, either the standard USB, or the optional ethernet or the optional GPIB.

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