PyVisa | Trouble I identifying Resources | Rigol DS1054 | Keithly 2200-20-5

dustin1986 over 2 years ago

Hi I am new to automating lab equipment. I am playing around with an oscope and psu to learn. I am using the usb connections. I am using Manjaro linux. I have the usbtmc driver installed and working. My linux box does see the instruments when I plug them in. However, pyvisa doesnot seem to find them. I just get a long list of ASRL "devices" no way to identify which one is the hardware I attached.

Does pyvisa not see the hardware or is thee another way to find devices?

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charlieo21 over 2 years ago

You can try this.

i = 1
for key, value in rm.list_resources_info().items():
    print('\nInstrument ', str(i), ': ', key)
    print('  Interface type: ', value.interface_type)
    print('  Interface board number: ', value.interface_board_number)
    print('  Resource class: ', value.resource_class)
    print('  Resource name: ', value.resource_name)
    print('  Resource alias: ', value.alias)
    i += 1

Jan Cumps over 2 years ago in reply to charlieo21

On my Windows PC with Python 3.9, that works:
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dustin1986 over 2 years ago in reply to Jan Cumps

This reply was deleted.
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Jan Cumps over 2 years ago in reply to Jan Cumps

... and after adding a Rigol PSU:

I'm preparing for an analogue blog, related to op-amps , Schmitt triggers, and automating the measurements such a circuit. That's why my instruments are currently plugged in and visa-ready
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dustin1986 over 2 years ago in reply to Jan Cumps

I get this output ( 32 of them. I am only showing the first 2 because if I post the whole output it gets flagged as spam)

Instrument  1 :  ASRL1::INSTR
  Interface type:  InterfaceType.asrl
  Interface board number:  1
  Resource class:  INSTR
  Resource name:  ASRL1::INSTR
  Resource alias:  None

Instrument  2 :  ASRL2::INSTR
  Interface type:  InterfaceType.asrl
  Interface board number:  2
  Resource class:  INSTR
  Resource name:  ASRL2::INSTR
  Resource alias:  None

Jan Cumps over 2 years ago in reply to dustin1986

Indeed, those are serial entries. It does not seem to pick up the scope
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charlieo21 over 2 years ago in reply to dustin1986

It's possible that is a read only access. Check this python - Unable to get full VISA address that includes the serial number - Stack Overflow
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charlieo21 over 2 years ago in reply to dustin1986

It's possible that is a read only access. Check this python - Unable to get full VISA address that includes the serial number - Stack Overflow
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dustin1986 over 2 years ago in reply to charlieo21

I will check out this possibility as soon as I get back from lunch. Many thanks.
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