Alpha Technologies AlphaNet DSM Series DOCSIS - Manual (Page 37)

37 745-814-B0-001, Rev. A
discretePropertyTable: Discrete Alarms
This table holds the alarmable discrete objects that are passed from the power
supply to the transponder. The SCTE-HMS-PS-MIB file defines all supported objects
in this table, including the different states and dependencies of each object. An object
must both be in this file and be supported by the power supply and transponder
before it will show up in the discretePropertyTable. Through this table, how an object
is alarmed when it transitions to the different states is defined.
Discrete alarms settings are programmable using three values: enable major, enable
minor, and disable. The discrete alarms represent the value of the alarm as defined
by the network, and are distinct from the power supply alarms. For example, the
discrete alarm for a psMajorAlarm (power supply major alarm, see Section 6.3.2)
may be set as “enable minor” (network alarm setting). In this case, a power supply
major alarm is reported to the network as a minor alarm. If an object transitions
into a state set at enableMinor or enableMajor, an alarm instance is created in the
currentAlarmTable. This alarm is labeled caasDiscreteMinor or caasDiscreteMajor.
If an object is set to disable, no alarm is generated. To set system discrete
alarms, select edit mode as defined by your MIB browser. Select the alarm in the
“discreteAlarmEnable” column and change the value to the desired setting.
Example:
In the example below, psInverterStatus is set to generate discreteMinor alarms if it
enters a state of “2” or “5,” which are “AC line loss” and “Test Fail” respectively. If the
inverter enters states “1,” “3,” or “4,” no alarm is generated. See the table on the next
page for alarm definitions.
NOTE:
discreteMinor and discreteMajor are completely different from psMajor and psMinor, which are defined by the
power supply (see Section 6.3.2 ). In the Discrete Table, psMajor or psMinor can actually be disabled so that
they would not generate an entry in the currentAlarmTable.
Values of 2
and 5 generate
minor alarms.
6.0 Data Management, continued
6.3
SCTE-HMS MIB Alarms, continued
6.3.1 SCTE-HMS Configurable Alarms, continued