Alpha Technologies DSM3 for XM3 - Technical Manual - Manual (Page 58)

58 745-814-B11-001, Rev. C (03/2014)
6.2.3 General Power Supply Alarms
The Intelligent CableUPS detects a wide array of alarms and displays the type of active alarm in
the Smart Display screen and the severity of alarm (e.g., Major/Minor) by means of the Inverter
Module LEDs.
6.0 Data Management
General power supply alarms are passed directly from the power supply to the Communications
Module without specific definition and are classified in the HMS MIB table as psMinorAlarm
and psMajorAlarm. There are a number of problems that can generate these alarms and the
exact nature of the situation is not specified. Minor and Major alarms are defined by the SCTE
standards committee as follows:
psMajor
“Service has been dropped or a service interruption is imminent. Indicates that an immediate
truck roll is appropriate.” Several psMajor alarms are latching, meaning that the alarm won’t
clear until the problem is fixed and after a successful completion of a Self Test. A Self Test is the
preferred method of verifying the resolution of the alarm condition as cycling the power has the
potential of masking the problem and not indicating the actual state of the system.
psMinor
“A non-service affecting condition has occurred and should be monitored.”
The following table lists the psMajor and psMinor alarm definitions for the XM3 power supply.