Verilink AS56/56Plus (896-502588-001) Product Manual - Manual (Page 62)

Testing the Access System 56
4-8 AS56 and AS56 Plus User Manual
Serial Port BERT The Serial Port (DTE) BERT can be used as a part of many different test
configurations. It is most valuable with both the Local and Remote Serial
Port Loops activated. The local end of the recommended configuration is
shown below.
The “Local” Errored Seconds are counted by the detector toward the left
side in the figure. The “Remote” Errored Seconds are counted by the
detector toward the right side.
WHEN TESTING IS COMPLETED, BE SURE TO TURN THE LOOP AND
BERT “OFF”.
Use SELECT and UP/DOWN as required to:
■
Turn ON the Local and/or Remote Loop.
■
Confirm/set the BER pattern generator to 2047.
■
Zero out the local and remote Errored Seconds counters.
■
Zero out the seconds/test counter.
■
Inject errors to confirm test configuration.
Diagnostics
_Serial Port
From Diag. Menu,
UP/DOWN to
display:
SP Diagnostics
Local Loop.: Off
SELECT to display:
Generator
Test Pattern
Detector Generator
Detector To
DTE
1.536 Mbps 1.544 Mbps
Serial Port
BERT and
Payload Networ
Interface
Loop ON