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14 Section 61182007L1-5, Issue 1 61182007L1-5A
The Protection Configuration Screen - Main,
illustrated in Figure 18, displays the current settings
for Protection Mode, BER Threshold and BER
Interval. The BER Threshold allows the user to select
a bit error rate that, when exceeded, will cause a
switchover to an auxiliary circuit. The BER Interval
defines the interval over which errors will be
accumulated for comparison with the BER Threshold.
The option settings for BER Threshold and BER
Interval are detailed in Table 4.
The Protection Configuration Screen – Auxiliary,
illustrated in Figure 19, displays the current settings
for Protection Mode, Minimum Hold-in Time, BER
Threshold, BER Interval, Lock-in Hours, Switch-to
-Aux Limit, and Lock-in Check Interval. A History
count for Switchovers, Reversions, Failures, and
Lockouts is provided, while the Lock-in Options and
Figure 18. Protection Configuration Screen – Main
Shelf: 1 Slot: 5 Total Access System 04/07/01 09:19
Unacknowledged Alarms: MAJOR MINOR
Circuit ID:
Protection Configuration
1. Protection Mode Disabled
2. BER Threshold 1E-4
3. BER Interval 15 Min(s)
Selection:
‘?’ - System Help Screen
Figure 19. Protection Configuration Screen – Auxiliary
Shelf: 1 Slot: 6 Total Access System 04/07/01 09:20
Unacknowledged Alarms: MAJOR MINOR
Circuit ID:
Protection Configuration
1. Protection Mode Manual Disable
2. Minimum Hold-in Time 01 minutes
3. BER Threshold 1E-4
4. BER Interval 15 minutes
5. Lock-in Time 12 hours
6. Switch-to-Aux Limit 03 (1-9)
7. Lock-in Check Interval 20 minutes
Current System Status History
[ Prot Disabled ] Switchovers: 00 Reversions: 00
Failures: 00 Lockouts: 00
Current Lock-in Option Setting
Lock-in for 12 hours if 03 switchovers occur in 20 minutes.
Selection:
‘?’ - System Help Screen