Troubleshooting guide

MX2820 System Manual
5-88 61186003L1-1D
Figure 5-56. BERT Pattern Selection Screen
Figure 5-57. BERT Pattern Selection Screen - For P/N 1186002L3 Only
Any one of the different unframed BERT patterns can be selected based upon individual need.
The BERT test also allows bit error insertion. While the test is running, additional menu items
appear to show the state of pattern synchronization, the bit error count, and a clear-error-
count option.
Shelf: 1 Slot: 1A ADTRAN MX2820 System 04/14/04 16:58
Unacknowledged Alarms: None TID: HTVLALEXD16
BERT Pattern
Pattern: QRSS
1 - QRSS
2 - ALL ONES
3 - ALL ZEROS
4 - 2 IN 8 (2:6)
5 - 1 IN 8 (1:7)
6 - 2^15-1 INV
Selection: '?' - System Help Screen
Shelf: 1 Slot: 1A ADTRAN MX2820 System 04/14/04 16:58
Unacknowledged Alarms: None TID: HTVLALEXD16
BERT Pattern
Pattern: QRSS
1 - ALL ONES
2 - ALL ZEROES
3 - 2 IN 8 (2:6)
4 - 1 IN 8 (1:7)
5 - QRSS
6 - 63
7 - 511
8 - 2047
9 - 2^15-1 INV
10 - 2^20
11 - 2^23
Selection: '?' - System Help Screen