User Manual

AS4000 Subscriber Terminal

Installation and Commissioning

Appendix

605-0000-454

Draft Issue 1.3 Date 8/02/00

Page 1 of 2

BER TESTING

During commissioning A BER test can be set-up on the DA system to measure the

performance of the RF link. This can be achieved with the following procedures

STEP PROCEDURE

1. Setting up the BER Tester

1. Remove the 2Mbit/s connection at the AC Port mapped to the link to be tested.

2. Connect the 2Mbit/s cable from the BER tester to the Access Concentrator

Port

3. Configure the BER tester as follows:

Interface: Ternary

Linecode: HDB3

Frame: CAS MFM

Through Mode: Off

Tx Clock Source: Internal

Pattern: 2^23-1

PRBS Polarity: Inv

Receive Timeslots: As per Tx

Tx: Timeslot set to timeslot allocated to link

1.1 Configuring the DTU card

1. Connect the LAT cable to the DTU card

2. Put DTU into test mode Type:TE 0

3. To Enable through-path through DTU Download the following text file:

RW7_160k.txt