July 2021 eLog


Author: Laurel


Author: Laurel

  • issues with connecting to double PSU via "psu2" simlink
    • weird bc we did not run into any problems when doing this for psu1 (see June eLog)
    • if we attempt to connect to the device via "ASRL/dev/psu2::INSTR" as opposed to "ASRL/dev/ttyACM1::INSTR", the following exception is raised:
      • serial.serialutil.SerialException: Could not configure port: (25, 'Inappropriate ioctl for device')
      • this is not a problem when connecting via ".../ttyACM1..." for some reason
      • I suspect this may have something to do with the mode="0666" permission, bc the ioctl error, but maybe not
  • USB connection to oscilloscope not showing up with visa, but does show up with lsusb
    • Massimo encountered same issue with Rigol pulser at first
      • in /etc/udev/rules.d/usbtmc.rules:
      • SUBSYSTEMS=="usb", ACTION=="add", ATTRS{idVendor}==[idVendor], ATTRS{idProduct}==[idProduct], GROUP="usbtmc", MODE="0660"
      • find idVendor and idProduct from lsusb:
      • Bus XXX Device XXX: ID [idVendor]:[idProduct] ...
      • ex: ID f4ed:ee3a
  • Siglent programming guide: https://siglentna.com/USA_website_2014/Documents/Program_Material/SIGLENT_Digital_Oscilloscopes_Remote%20Control%20Manual.pdf
    • using Waveform Transfer commands (Waveform, Waveform_Setup)


Author: Laurel

  • sudden problem with single PSU where it will be set to 3.0 V but output reads 3.1 V, sometimes voltage reading on computer and analog reading on machine differ (3.0V vs 3.1 V)
    • did not notice this until today? not sure what's going on here


Author: Laurel

  • the RigolDG5000 module that we had downloaded does not make any sense to me and the docs are incredibly unhelpful, so I'm just writing my own module to read and write to the machine


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Topic revision: r4 - 2021-07-19 - LaurelCarpenter
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