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    User name sawatzky/gilman

    Log entry time 16:32:12 on June 08, 2007

    Entry number 204763

    keyword=Radiator stepper motor voltage settings

    We need to have the stepper voltage at 18V minimum (which is the voltage we are using now). If the voltage is lower than that the motor motion is smoother, BUT the motor gets "stuck" at the UL (radiator out) limit switch.

    Pulse Generator: 100 Hz, 100 Hz square wave 0V min, +2V max. *** Confirm the pulse on the scope. ***

    For the Stanford Model DS345 unit we have now the function generator settings to get what we need are: 100 Hz, 1V amplitude, 0.5V offset. This generates the needed 0--2V square wave on the scope. Go figure.

    A copy of this log entry has been emailed to: gilman@jlab.org