This holds the major-low alarm threshold configured for the Offset Monitor parameter, in dB. If currentValueOffsetNomMonitor falls below this threshold, the module raises a majorLowAlarm condition reflected in alarmStateOffsetNomMonitor, signaling a serious low-side deviation in how far a related internal control loop's actual output has drifted from its nominal target. An admin sets this as the floor beyond which the reading is considered a significant fault rather than normal variation.