MATLAB Answers

Can write data from network analyser but cannot read it (SCPI commands)

7 views (last 30 days)
Charlie Berry
Charlie Berry on 21 Feb 2018
Answered: Longhao Wu on 20 Aug 2018
Hi guys,
I'm trying to read the currently set value from an Agilent E5071C network analyser (ENA), using a TCPI/IP connection method.
As one example of a SCPI command I've tried for setting the start frequency:
The below command works for setting the start frequency:
:SENSe{[1]-160}:FREQuency:STARt <numeric>
The below command should return the currently set frequency:
I've used the Matlab code below to set the start frequency to 1GHz, which works:
fprintf(agilentENA, [':SENS:FREQ:STAR 1e9'])
But when I try to query it with the below code, I just receive an error:
out = str2double(fgets(agilentENA));
The error I receive is:
Warning: Unsuccessful read: A timeout occurred before the Terminator was reached.
I've tried increasing the timeout to 100 too, but it still shows the same error message. It's odd how I can write to the instrument, but cannot read to it.
Thanks in advance for any support.
Best Regards, Charlie

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by