User Manual

Table Of Contents
Document name:
OMU Commands and Attributes 1.0.0 v1.0
Version:
1.0
11 ALARM ATTRIBUTE THRESHOLDS
This section defines alarm sources in the Optical Master Unit target.
The following alarms are NOT described in this chapter, but are optionally generated by
the repeater:
* External Alarm Interface board alarms EX1-EX4.
* User activity alarms VLI, LGO and CLR.
* User administration alarms (UAD, UDE, UPM, UDM and UPW).
* Firmware upgrade / fall back alarms (FWU and FWF).
11.1 BAT – Battery Level
11.1.1 Description
The battery level alarm source ensures that the battery charge is within expected levels.
A battery charge outside configured interval might mean that the battery is drained and
needs replacement.
11.1.2 Threshold Usage
By default, both upper and lower thresholds are used in the BAT alarm.
11.1.3 Time
Time threshold defines how many seconds the alarm should be measured as in error
before an alarm is triggered.
11.1.4 Upper
Upper threshold is maximum voltage level * 10 of the battery charge before an alarm is
triggered. For example, configuring the upper level as 126 means that if battery charge
exceeds 12.6 V, an alarm is triggered.
11.1.5 Lower
Lower threshold is minimum voltage level * 10 of the battery charge before an alarm is
triggered. For example, configuring the lower level as 92 means that if battery charge
drops below 9.2 V, an alarm is triggered.
11.2 COM – Communications with Active Devices
11.2.1 Description
The repeater controller communicates with active devices using a serial bus. In case there
is a failure in communications with an active device it might indicate that the active
device or bus is broken, or that there is a configurations error.
COM alarm is triggered on failure in communication with Rack Communication Boards
(RCB), Splitter Boards (SPLIT), Combiner Boards (COMB) and FiberOptic Master
Units (FOMASTER).
11.2.2 Threshold Usage
This is a digital measurement, i.e, upper and lower thresholds are ignored.
11.2.3 Time
Time threshold configures how many failed communication attempts in a row that is
allowed before an alarm is triggered.
11.2.4 Upper
Not used.
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