The fast shutter test that checks that the shutter fires by look at the GS 13s at the time of a lockloss where we had more than 14kW gave us one false alarm tonight. 

(It correctly reported that the shutter did not fire in a lockloss where the circulating power dropped).  Not enough of the power was sent to the AS port for H1:SYS-MOTION_C_SHUTTER_G_TRIGGER_VOLTS to get close to its threshold of 2 Volts.  (screenshot attached)

We probably want to increase this threshold to avoid false alarms so people don't get in the habit of ignoring the warning.  For now I have increased it to 25kW, and committed to the SVN.