Specifications

Appendix D Supervision Terminal Commands Installation and Operation Manual
D-8 Commands FCD-E1LC Ver. 1.0
DEF BERT ML
Purpose
Define the BERT test conditions. Refer to Table D-2 for the parameter
description, allowable ranges and configuration guidelines.
Syntax
DEF BERT
Use
1. To define the BER test parameters, type:
DEF BERT ML<Enter>
The first row of the BERT parameters data form is displayed:
PATTERN ERROR_INJECTION_RATE RX_INBAND INBAND_LOOP_PATTERN BERT_MODE
2E23-1 NO_ERR DISABLE USER CONFIG USER
2. If you choose USER CONFIG, the second row of the data form is displayed:
USER_PATTERN_LEN USER_ACTIVATE_PAT
1 XXXXXXX0
3. Select the length of the user-selected. After pressing <Spacebar>, the cursor
moves to the first place in the USER_ACTIVATE_PAT field, which contains a
template used to specify the activation pattern. The template enables
changing the selected number of binary places (these are always the last
places). Move the cursor (by pressing <Spacebar>) to each desired position
and set the corresponding digit in the template to 0 or 1 by pressing <F> or
<B>.
4. When done, press <Enter> to display the third row of the data form.
USER_PATTERN_LEN USER_DEACTIVATE_PAT
1 XXXXXXX0
5. Select the user deactivation pattern using the procedure of Step 3 .
6. After making the required selections, press <Enter> to end.
Table D-2. BERT Configuration Parameters
Parameter Function Values
PATTERN
Selects the test pattern for the data
channel
The available selections are the QRSS test
pattern and the following pseudo-random
sequences: 511, 2047, 2E15-1, 2E23-1.
Default: 2E23-1
ERROR_INJECTION_
RATE
Enables the injection of a calibrated
rate in the transmitted test pattern
NO ERR – Disables the injection of errors.
SINGLE – Injects a single error when <I> is
pressed (see DSP BERT command).
10E-1 – Error injection at a rate of 10
-1
.
Default: NO ERR