Alpha Technologies DSM3 for XM3 - Technical Manual - Manual (Page 51)

51 745-814-B11-001, Rev. C (03/2014)
6.2 SCTE-HMS MIB Alarms
6.2.1 SCTE-HMS Configurable Alarms
Binary to Hex Conversions for Alarm Settings
Unused HiHi Hi Lo LoLo Hex Enabled Alarms
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0 0 0 0 0 00 No Alarms
0 0 0 0 0 0 0 1 01 LoLo
0 0 0 0 0 0 1 0 02 Lo
0 0 0 0 0 0 1 1 03 Lo, LoLo
0 0 0 0 0 1 0 0 04 Hi
0 0 0 0 0 1 0 1 05 Hi, LoLo
0 0 0 0 0 1 1 0 06 Hi, Lo
0 0 0 0 0 1 1 1 07 Hi, Lo, LoLo
0 0 0 0 1 0 0 0 08 HiHi
0 0 0 0 1 0 0 1 09 HiHi, LoLo
0 0 0 0 1 0 1 0 0A HiHi, Lo
0 0 0 0 1 0 1 1 0B HiHi, Lo, LoLo
0 0 0 0 1 1 0 0 0C HiHi, Hi
0 0 0 0 1 1 0 1 0D HiHi, Hi, LoLo
0 0 0 0 1 1 1 0 0E HiHi, Hi, Lo
0 0 0 0 1 1 1 1 0F HiHi, Hi, Lo, LoLo
Table 6-2, Binary to Hex Conversions for Alarm Settings
The HMS discrete and analog alarms provide the capability to monitor and alarm various
power supply and environmental conditions and measurements. The alarms in the SCTE-
HMS propertyTable and the discretePropertyTable can be defined and set to provide a custom
monitoring system.
The following section provides an example and detailed information on how to set values and
enable or disable alarms in the MIB tables. For ease of reference they are in this sequence:
• An example of how to set a temperature alarm
• A table to help convert the desired reported alarm states to hexadecimal for setting the MIB
• Commonly monitored parameters and recommended values
Example:
The alarms for
psTemperature below are set so that the normal temperature range is from
30°C to 45°C. If the temperature rises above 45°C, a casHI alarm will be sent to the alarmTable.
Anything over 50°C is considered a critical condition and will generate a casHIHI alarm. If the
temperature falls below the normal level of 30°C, casLO will be generated and if it continues to
drop below 0, a casLOLO will be generated. The temperature must rise above the LOLO limit plus
the deadband value of 3°C before the casLOLO alarm will change to a casLO. The alarmEnable
field is set to 0F Hex to monitor and alarm for all conditions.
6.0 Data Management
psTemperature
OF (hex)