PXG 900 User's Guide - Firmware Version 4.3 - 1/9/201741Type Value LevelHigh 144 VAC 2High 132 VAC 1Low 108 VAC 1Low 96 VAC 2The following figures show the alarm logic and how this is affected by alarm levels. Examples for both latching andnon-latching alarms are given.Latching Alarm Example