MPCe/LPCe Users Manual
17
System Menu
System settings are entire controller parameters that are not specific to supply one, supply two, or the remote
TSP/NEG controller. Values are selectable via pull-down menus or edit buttons. When parameters are entered
press the OK button.
Pressure Units
This value determines if the displays pressure in Torr, mBar, or Pascal. The default value is Torr.
Comm Mode
The communications mode determines local, full, or remote control of the controller. In local mode, the controller
only accepts front panel commands and serial communication is ignored. In full mode, the controller accepts both
front panel and serial commands. In remote mode, the controller accepts only serial commands and the front
panel becomes locked. To unlock the front panel, press and hold the ‘Supply 1’ area of the screen for several
seconds.
AutoFan
This option enables the MPCe to control the cooling fan based on high voltage operation. It can be disabled if the
fan is causing excessive noise or vibration.
Arc Detect
The controller is designed to protect both the controller and ion pump in harsh starting and vacuum events. Older
ion pumps can send false positive readings to the controller and inadvertently trigger the arc detection software.
In these cases, it desirable to bypass this detection.
If Arc Detect is enabled, then the HV will turn off and attempt to restart for approximately 20 cycles. Arc Detect
will attempt restarting several times. If unsuccessful the controller will not attempt further restarts. If Arc Detect is
disabled, the HV will continue to be active for approximately 60 seconds at which time the HV will turn off due to
excessive power delivery to the given size ion pump.
