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Setting back a learn string using Lxi TCP port 5025

Question asked by petervc on Mar 6, 2015
Latest reply on Mar 8, 2015 by MarkL

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I have a DSO3034A an I want to remote control it using a simple tcp socket and Scpi-raw.

I can actually do execute scpi commands without a problem, I can even requests the learn string using ":SYST:SET?".

But the problem is I don't seem to be able to set it back. In the documentation it is mentioned that I should send it back with ":SYST:SET " and after that following the data.

One of the examples I tried :

:SYST:SET #800083042 expandMode 0,"ground" wfmAntialiasing
....
more data
....

It seemed straight forward but I have no success with it until now.

Can someone help me with this, say me what I do wrong ?

I use TcpClient with c# to handle the socket communication.

Thank,
Peter

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inf_persistence Mar 7, 2015 4:54 AM

Not sure what is wrong without looking at the code, but attached is my implementation. In my example, I saved the output of :SYST:SETUP into a file first and then read it back using the program, just like the example in the programming guide.

If you have the Keysight Connection Expert installed, you can use its IOMonitor to see what your program actually sent and debug the problem.

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LoadScp_2.zip12.2 KB

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MarkL Mar 8, 2015 9:47 AM

There is a bug where the byte count in the header for ASCII blocks ("#800083042" in your example) is too big by a few bytes. This bug is in at least 2.37, and probably 2.35 as well. It appears to be corrected in 2.38.

If you're sending back the string the scope sent you verbatim, it will have the wrong byte count.

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inf_persistence Mar 7, 2015 4:54 AM
Mark Correct
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Not sure what is wrong without looking at the code, but attached is my implementation. In my example, I saved the output of :SYST:SETUP into a file first and then read it back using the program, just like the example in the programming guide.

If you have the Keysight Connection Expert installed, you can use its IOMonitor to see what your program actually sent and debug the problem.
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- LoadScp_2.zip12.2 KB
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MarkL Mar 8, 2015 9:47 AM
Mark Correct
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There is a bug where the byte count in the header for ASCII blocks ("#800083042" in your example) is too big by a few bytes. This bug is in at least 2.37, and probably 2.35 as well. It appears to be corrected in 2.38.

If you're sending back the string the scope sent you verbatim, it will have the wrong byte count.
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Setting back a learn string using Lxi TCP port 5025

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