Ferdi Franceschini 2008-08-29 16:47 The High Voltage controller for the Ordela detector has been implemented as a standard SICS environment controller object with a driveable interface. It has been configured differently to other SICS objects in several ways. Firstly, you use up and down commands to drive the voltage to its upper and lower limits. This is a blocking task i.e. no other task can started until this is complete. Secondly, the instrument has been configured with the SICS anticollider to prevent you from moving the detector when the voltage is above a certain threshold, which will lead to damage of the detector. This is important for Quokka as the detector is moved frequently. dhv1 up Raise the voltage dhv1 down Lower the voltage NOTE This command blocks until the power supply reaches the "upper" or "lower" running voltages, see below. INT1712 1 If this commands hang SICS you can interrupt it with by entering this at the SICS command line, or by pressing the interrupt button at the bottom of GumTree dhv1 reset Reset the controller dhv1 list Displays the values of the various parameters dhv1 send command Sends a command to the unit and displays the response dhv1 off Drives the output voltage to zero dhv1 upper voltage Sets the running voltage for the up command. This would normally be the operating voltage for the equipment to which the power supply is connected. dhv1 lower voltage Sets the standby voltage for the down command. This would normally be the standby voltage for the equipment to which the power supply is connected. dhv1 max voltage Sets the hardware maximum for the power supply. For the Ordela power supplies, it is important that this is the correct full-scale value of the power supply itself. This is used to convert between the voltage step and voltages and to calculate the step period from the voltage slew rate. dhv1 rate voltage The volts per second at which the power supply slews between voltages. For the Ordela power supplies, this is used to calculate the time between voltage steps based on the max parameter dhv1 debug val Allowed val 0 No debug information in log 1 Debug information in log dhv1 lock This locks the device from being set by users. Users can use up down and off commands to set voltages dhv1 unlock Managers may unlock the device