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Saving config to PC using PYthon

Question asked by boogaloob on Oct 13, 2011
Latest reply on Oct 14, 2011 by boogaloob

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Hi,

Using DSO6104A via LAN.
I am facing issue when using :SAVE:PWD .
If I send some SCPI commands directly I get:
> *IDN?
< AGILENT TECHNOLOGIES,DSO6104A,MY48260164,05.25.0000
> *RST
> :SAVE:PWD?
< "/usb0/"
> :SAVE:PWD "C:/"
> :SAVE:PWD?
< "/usb0/"

My final goal is to save the config to a .scp file locally. But I need to know where is the file saved...
Am I missing something?
Any idea ?

Thanks for your help.

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bret Oct 13, 2011 6:57 AM
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I believe these :SAVE commands only work for 2 locations:
1. Scope internal storage (only applies to Setup Files, and some other feature)
2. USB

If you wish to save directly to PC, this command is not for you.

So, you can always save to a USB that is plugged in with something like:

:SAV:IMAGE "/usb0/hello.bmp"

(note: I can't recall the exact syntax, so this is just an example)
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boogaloob Oct 13, 2011 7:45 AM
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It finally worked (communication issue?).

But as mentioned by bret, I am only able to save/recall from the scope hard drive (default is C:/setups/) or from the USB.

However, if I use the macro provided with the dedicated excel toolbar, I have the possibility to do so (saving config file to .scp in any location loading .scp from anywhere). The .vba code is password protected unfortunately...
SO, this functionality is available somehow !!!

Is anybody having a clue about the way this macro is doing the job?
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bret Oct 13, 2011 9:52 AM
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That is cool. Where is that macro available?

For images, I used to use : DISP:DATA? and then reconstruct the retrieved data into a file in my PC.

For setup files, I recall there is a similar command (to get the binary, so you can reconstruct as a file in your PC). Was it *SAV? or something ...

I didn't know the :SAV and :REC commands can interact with PC paths. Wow.
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boogaloob Oct 14, 2011 1:02 AM
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Here is the macro: http://www.home.agilent.com/agilent/redirector.jspx?action=doc&lc=eng&cc=US&id=895573&ltype=External%20File

I have the feeling I can get the config from :SYSTem:SETup? .
However I do not know what is in it and how to reload it later to the scope.
I am currently scripting in Python. I achieved to build in python/pyVisa the Initialize/capture/analyse sequence provided as examples with VB/.NET/C#. But I have no clue how to load the list I get (not bin anymore) when I call the :SYSTem:SETup?.

Is there somebody using pyVisa here?

Here is a simple example in Python:

import visa
scope = visa.instrument("TCPIP0::192.168.1.130::inst0::INSTR")
data = scope.ask_for_values(":SYSTem:SETup?")
print 'System Setup=', data

Here is what I get:
System Setup= [800003032.0, 0.0, 0.0, 0.0, 0.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 0.0, 0.0, 1.111011e+31, 1.01e+27, 1.0, 2.0, 3.0, 4.0, 2.0, 3.0, 6.0, 7.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 333333.0, 333333.0, 333333.0, 333333.0, 6.0, 6.0]

What does that mean? What figure is what scope feature?
How to reload this to the scope?

Thanks for your help.
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boogaloob Oct 14, 2011 2:45 AM
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DONE !

Here is the way I have done it using Python / pyvisa.
The file is not ASCii but Bin. But it works.

''' Example of how to get the config file from the scope, saving to PC and reloading it'''
import visa
scope = visa.instrument("TCPIP0::192.168.1.130::inst0::INSTR")

# get from scope
scope.write(":SYSTem:SETup?")
data = scope.read_raw()

# Saving the binary file to PC
with open('scopeSetUp.scp', 'wb') as f:
f.write(data)

# Loading from PC
with open('scopeSetUp.scp','rb') as f:
data2 = f.read()

# Loading to scope
scope.write(":SYSTem:SETup %s" %str(data2))
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Saving config to PC using PYthon

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