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Chapter 6 Troubleshooting and Diagnostics RICi-4E1/T1, RICi-8E1/T1 Installation and Operation Manual
6-12 Testing the Unit RICi-4E1/T1, RICi-8E1/T1 Ver. 2.0
Performing Bit Error Rate Test (BERT)
You can perform a Bit Error Rate Test (BERT) to check that the E1/T1 physical
layer is free of errors. RICi-4E1/T1, RICi-8E1/T1 transmits a bit pattern to another
unit that provides a loopback. When the transmitting unit receives the bit
pattern, it compares it to the sent bit pattern to determine the error rate.
³ To perform BERT:
1. Navigate to the BERT menu (Main Menu > Diagnostics > BERT).
2. Type f or b to navigate to the E1/T1 port that you wish to test.
3. Define the pattern according to your testing requirements (see
Table
6-7
).
4. Select Send BERT and set it to On to start the test.
The test starts. If errors occur, Bit Error Count indicates how many errors.
5. If desired, select Inject Error to inject an error.
Indication of inject error is shown in the lower scrolling message window.
RICi-4E1/T1, RICi-8E1/T1
Main Menu > Diagnostics > BERT
Port (1)
Sync State > (Not Sync)
Bit Error Count (0)
1. Pattern > (p2E15m1)
2. Send BERT (Off)
3. Inject Error
ESC-Previous menu; !-Main menu; &-Exit; ?-Help
Figure
6-13. BERT Menu
RICi-4E1/T1, RICi-8E1/T1
Main Menu > Diagnostics > BERT
Port (1)
Sync State > (Not Sync)
Bit Error Count (0)
1. Pattern > (p2E15m1)
2. Send BERT (Off)
3. Inject Error
ESC-Previous menu; !-Main menu; &-Exit; ?-Help
---------------------------------------------------------
Inject Error
Inject Error
Figure
6-14. BERT Menu with Inject Error
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