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Message ID: 570     Entry time: Fri Apr 8 20:28:30 2011
Author: Frank 
Type: Notes 
Category: Vacuum 
Subject: ion pump turned on 

main valve on vac chamber closed, turbo still running (just in case)

ion pump current: 7.3mA
ion pump voltage: 720V

tried to add voltage/current monitor signals to DAQ but analog outputs seem to be broken.
voltage monitor should be 1V/kV but is about 12V
current monitor is railing at 15V as it might only work in low current regime. Manual is wrong, does say signal should be 1V/kV , so don't know what i should expect>
But ususally mA are too much so i expect it to work below 1mA.

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