HiI have now got the Spectrum Analyzer running, thanks to this forum, but I can't get its 'Sweep Gen' to work. Each time I select a channel, either channel, it crashes. This happens on Windows 7 & 10.
What am I doing wrong?
Yours Simon M.
You are not giving the program all the info it needs. You have not set the number of steps. That version of the program starts up with the number of steps set to 0. ( I know 0 is probably not a good default ). The version dated 5-28-2016 should start up with the number set to 10 but it is always good to check ALL settings before starting a sweep.
By the way if you are eventually looking to do an Audio frequency Bode plot, In ALICE I would forego the sine sweep approach and go with the impulse response method from the user's guide. The Phase results will be much better. Otherwise I would recommend using a sound card and one of the many audio spectrum analyzer programs out there. The DACs in the ALM1000 are not audio grade devices.
I have no idea why the program should be crashing. Have you installed the latest version from the Wiki dated 5-27-2016?
Short of that can you run from the actual Python code? install Python 2.7.11 and libsmu, numpy if you have not already. Instructions are on the wiki / guthub. Get the alice-desktop-1.1.pyw source file from the zip file and open it with the Python
IDLE editor console. Run the module. Do whatever makes the program crash and report back any messages / errors / warnings that appear in the Python console window.
Did you by chance click on the run button before changing any of the Sweep Gen settings, in other word was the display being updated at the time you made any changes? If so don't do that. You can't make changes to the sweep mode settings while the program is sweeping.
In future versions a Stop will be forced before making any changes to the settings.
Hi Doug, this is what I have done step by step..
AWG mode set to Hi-Z, then dismissed.
'Scope as shown...
Spectrum Window selected, then curve CB-dB-V selected, and run to prove working, then stopped
Sweep Gen selected, CHA, then run.
As soon as run is selected all the opened Alice windows close with out any error message. I haven't run it from the Python code yet, that I will do a little later on.
Hi Doug, that worked! Just had to make sure that the AWG was running as well.
I couldn't get the python version to run at all, although I could only find V1.0.
How do I make the peak hold to work? and what does the Sync AWG do?
And I do appreciate the impulse comment, I will use that for more serious work.
PS I thought I was the only one working on a Saturday afternoon? its 20:50 local time as I wright this.
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