LTPH-UM-1109-01, Issue 1

Testing

 

 

TESTING WITH H2TU-R BERT GENERATOR

The H2TU-R BERT Generator screen allows transmission of a test signal from the H2TU-R towards either the network (NET) or customer (CPE). Bit error rates are calculated and display on the Monitor screen.

1Press R to logon remotely, then press C to select the Config menu.

2 Use the ↑ and ↓ arrow keys to select BERT Generator, then press ENTER .

3Use the arrow keys to select an option, then press the SPACEBAR to cycle through the settings. Refer to Table 19 on page 52 for a list of BERT Generator option settings.

4Press ENTER to activate your choice.

5 To view BERT status, press ESC twice, then, using the ← arrow key to select the Monitor menu, press

ENTER .

6Press R to return to the H2TU-C logon screen. You can exit the status screen while signal generation is active.

Monitor

Performance Event Log

Config

Inventory

Report

Rlogon

Help

+

----------------------

 

 

+

 

 

 

 

 

Standard Options

->

 

 

 

 

 

ADC Options

 

->

 

 

 

 

 

Signal Generator

->

 

 

 

 

BERT

Generator

->

 

 

 

 

+

--------------------------------------

 

 

 

 

 

 

+

BERT

Signal

Generator

:

 

 

 

ENA

 

BERT

Signal

Pattern

:

1 in

7

BERT

Signal

Linecode

: AMI

 

BERT

Signal

Direction

: NET

only

BERT

Interval

 

: Continuous

+

--------------------------------------

 

 

 

 

 

 

+

Use <Spacebar> to cycle through option settings and

<Enter>

to activate

 

ID: xxxx—-xxxx—-xxxx--xxxx

09/01/2001 12:30:01

H2TU-R

System: OK___

Figure 30. H2TU-R BERT Generator Screen

The test pattern is sent out either from the line unit towards the network (toward NET) or from the remote unit towards the customer (toward CPE). Both test payloads must be looped back so they can be returned to the unit for BER detection. BER detection is performed in the line unit for both switch settings.

Tests done towards the NET must be looped at some point external to the higher circuit. Tests done towards the CPE can either be looped back at some external point beyond the remote unit, or they can be looped back internally by a higher loopback, such as NREM. The test payload, for the CPE direction, also passes back and forth over the HDSL2 link to the H2TU-C before it is analyzed for errors.

H2TU-C-231 List 2

January 9, 2002

53