Specifications

Chapter 4 Troubleshooting and Diagnostics D8E1T1 Installation and Operation Manual
4-6 BERT (Bit Error Rate Test)
1. To select a BERT pattern, either place the cursor on the New BERT field and
press <Enter> to cycle through the choices, OR press the specific hot key
indicated on the bottom of the menu. The selectable patterns and
corresponding hot keys are shown in Table 4-5.
Table 4-5. BERT Selections
Option Description
DS1/E1 BERT
[A] Framed 2047
[C] Framed 2^15 (Inverted Pattern according to ITU 0.151)
[D] Framed 2^20
[E] Framed 2^23 (Inverted Pattern according to ITU 0.151)
[F] Framed 2^11 - 7 0's limits
[G] Framed 2^15 - 7 0's limits
[H] Framed QRSS
[I] Framed 2^23 - 14 0's limits
[0] Framed All Zeros (0x00)
[1] Framed All Ones (0xFF)
[2] Framed 3 in 24 (0x44, 0x00, 0x04)
[3] Framed 1 in 8 (0x40)
Other Selections
[O] Off
2. Press X to start the test. The following prompt appears:
BERT Select
-------------
Link Number..: 1
Li
Cu ************************************
Ne * *
* -MESSAGE!- *
Available Bit Error T * *
--------------------- * *
[o]ff * Start New Test? *
[A] Framed 2047 * * x00)
[C] Framed 2^15 * * FF)
[D] Framed 2^20 * Are you sure (Y/N)? * 4,0x00,0x04)
[E] Framed 2^23 * * )
[F] Framed 2^11 - 7 0 ************************************
[G] Framed 2^15 - 7 0
[H] Framed QRSS
[I] Framed 2^23 - 14 0's limits
Figure 4-4. Start New Test Prompt