July 2021 eLog

2021-07-26

Author: Laurel

• still can't get the Newport motion controller to connect via IEEE-488, but I fixed connecting via RS-232C:
  • set baud rate to 19200

2021-07-23

Author: Laurel

• Newport ESP301 motion controller manual/programming guide:
  • https://www.newport.com/medias/sys_master/images/images/h2f/haa/8797091299358/ESP300-User-Manual.pdf

2021-07-19

Author: Laurel

• working on oscilloscope gui, most examples from instrument programming guides use matplotlib or similar, but super helpful qt oscilloscope-specific tutorial here:
  • https://doc.qt.io/qt-5/qtcharts-qmloscilloscope-example.html

2021-07-14

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)

2021-07-08

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

2021-07-07

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
  • programming guide is nowhere to be found on the TEquipment website, but can be found here: http://sdpha2.ucsd.edu/Lab_Equip_Manuals/Rigol_DG5000_Progr_Manu.pdf
    • FYI, the formatting of this document is exceptionally annoying
    • using Output and Source:Apply and Source:Pulse commands

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