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5-8
UAS 7626 DIU
GDC 087R706-000-02
Each Alarm Configuration Submenu lists all the alarms that the 7626 can report on a loop.
Consult the description of the Monitor/Alarms screen, which begins on page 5-13, for definitions
of the alarm conditions.
The unit evaluates most alarm conditions simply on the basis of whether or not the condition
exists. If the alarm condition exists, the unit displays it as ACTIVE on the Alarm Monitor
terminal interface screen and generates an SNMP trap to report it if it isn’t masked.
The two alarm conditions that the unit evaluates by means of a threshold value are the Major and
Minor Bit Error Rate (BER) alarms. You can set each alarm to occur in response to an error rate
of one error in 1,000, 10,000, 100,000, or 1,000,000 data bits. The on-screen entry fields display
those rates as 10E-3, 10E-4, 10E-5, and 10E-6.
Typically, you should configure the Minor BER alarm to occur at a lower error rate so it can serve
as an early warning signal, and configure the Major BER alarm to occur at an error rate that
seriously impacts operations. The threshold values you configure for BER alarms govern both
SNMP reporting and terminal interface display.
Figure 5-6
Alarm Masks Configuration Screen
The alarm configuration procedure involves the following steps:
1.
From the Alarm Configuration Submenu screen, select the number of the loop for which
you intend to perform alarm configuration and press the Enter key. In response the selected
Alarm Configuration Submenu screen is displayed.
You may want to begin by using the [8] All Alarms Control command to set all alarms
Reported or all alarms Masked, depending on how you intend to set the majority of the
alarm options. If you intend to change only selected items, go to step 4.
2.
To use All Alarms Control, type 8 and press the Enter key. In response, highlighting ap-
UAS 7626 Alarm Configuration - Loop 1
Alarm Masks:
[1] Loss of Clk : Masked
[2] Out of Sync : Masked
[3] No Sealing Current : Masked
[4] Error Seconds : Masked
[5] Unavailable Seconds: Masked
[6] Major BER : Masked
[7] Minor BER : Masked
[8] All Alarms Control : Masked
Alarm Thresholds:
[9] Major BER : 10E-3
[10] Minor BER : 10E-6
[0] Return to Main Menu [S] Save [CR] Return to previous Menu
Select: [ ]