Difference: ControlPowerSupply (3 vs. 4)

Revision 42016-10-26 - TomErikHaugen

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META TOPICPARENT name="UsingHighVoltage"

Controlling the Power Supplies Through the Computer

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Both the Keithley (High Voltage source) and the Keysight (LV and LVDS power supply) can be controlled through the computer. They are connected to each other and the computer through a GPIB connector bus, and are controlled using scripts from Timon. This allows for control and measurement through the computer instead of by hand. When you run the attached scripts to control the power supplies the buttons on the supplies will no longer do anything. To regain control of the equipment press the local button on which ever supply you want to control.
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Both the Keithley (High Voltage source) and the Keysight (LV and LVDS power supply) can be controlled through the computer. They are connected to each other and the computer through a GPIB connector bus, then controlled from python scripts (temporarily in ~/Desktop/Haugen/New_Scripts). These are based heavily on the scripts from timon and allow for powering on, powering off, ramping high voltage, performing an IV scan, and recording the data. There is documentation for the connector here.
 
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If any changes are made to the files they need to be recompiled in make. Running power_on power_off and start_mon require the argument of the serial port. The serial port for the GPIB connector is /dev/ttyUSB0 communication happens through that, with the Keithley power supply having the ID 10, and the keysight power supply having the ID 05.
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The communication happens through a serial port name /dev/ttyUSB0
 
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-- Tom-Erik Haugen - 2016-10-21
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Each device on the bus has to have a unique ID number between 0-30. I have set the Keysight supply to be ID 05, and the Keithley supply to be ID 10.

To change the ID:

  • Keysight:
    • press the I/O config button
    • Select HPIB / 488 (if the screen shows this press I/O Config again, if not scroll the adjust wheel till it does)
    • set the address
  • Keysight:
    • Press MENU
    • select COMMUNICATION
    • select GPIB
    • set the address
    • select GPIB protocol (SCPI)
While remote control through the GPIB connector is on, none of the buttons on either of the power supplies will be useable. Local control can be regained on either supply by pressing the "local" button

-- Tom-Erik Haugen - 2016-10-21

 

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META FILEATTACHMENT attachment="Makefile" attr="" comment="" date="1477090488" name="Makefile" path="Makefile" size="840" user="TomErikHaugen" version="1"
META FILEATTACHMENT attachment="power_off.cxx" attr="" comment="" date="1477090488" name="power_off.cxx" path="power_off.cxx" size="2359" user="TomErikHaugen" version="1"
 
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