Trend AuroraPlus User Guide
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Testing Fixed Links
Fixed Links are simple Point-to-Point lines where no
protocol is used - in other words there is no D Channel
signalling. AuroraPlus can be used to test fixed links in one of
two ways:
• by sending a BER Test pattern, which can be looped
back by the remote end. The received pattern is then
compared with what was sent.
•
AuroraPlus may be set up to loop back a test pattern to
another tester using the second B Channel.
Choose
TESTS from the Main Menu to display the FXD BERT
and FXD LOOP options.
Choose
FXD LOOP to set AuroraPlus to loop back a test pattern
to another tester. The display shows
Fixed Loop.
Choose
FXD BERT to send and loop back a BER Test pattern.
AuroraPlus displays the BER Test Screen - please refer to
Performing a BER Test in this chapter for further
information.
Performing a BER Test
The BER (Bit Error Rate) Test is used to check the integrity
of the ISDN line. It does this by generating a test pattern
which it then receives back. The received pattern is compared
with the transmitted pattern and an error count is given.
AuroraPlus can store up to 10 BER test results.
Note
The stored BER test results are kept:
• if you have a line-powered
AuroraPlus while power is
being supplied by the line
• if you have a battery-powered
AuroraPlus only while the
battery is charged.
Chap05.P65 01/05/01, 09:118
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