Quantum and Evolution Series Installation and Operating Handbook
7-163
Test-BER-Tx-Pattern Screen
Options:
Alt 10, All 1, All 0, PRBS 20-0151, PRBS 15, PRBS 11, User, QRSS,
PRBS 23, PRBS 20-0153, PRBS 19, PRBS 9, PRBS 7, PRBS 6, 3 in 24,
1 in 16, 2 in 8, 1 in 8, 1 in 4, Alt 1100
Selects the desired test pattern. The pattern is a pseudo random
sequence of 1s and 0s of the specified length that repeats continuously.
The
User
pattern allows a user-defined pattern to be entered.
Factory
default:
PRBS 20-0151
Description:
Selects the PRBS BER test pattern.
Test-BER-Tx-Results Screen
The
BERT
shows the instantaneous test pattern synchronisation status. When the Rx
path is synchronised to the incoming Tx test pattern then this will display ‘Sync OK’ and
when synchronisation is lost it will display ‘NO SYNC’.
The
Time
field indicates the elapsed time since the test was started or restarted.
The
Loss#
field is a count of the number of times that pattern synchronisation has been
lost since the test started.
The
Errors
field indicates the total number of bits received in error since the test started.
The
BER
field indicates Bit Error Rate, computed from the number of bit errors divided by
the number of bits received.
BER pattern:
[PRBS 15]
New: Alt 10
BERT:Sync OK Time:40.0mins
Loss#:1 Errors:3
BER:1.0E-6
