Zhone Technologies IMACS-200 - Manual (Page 199)

High Speed Data Ports 9-11
Table 9-5. Test Screen Option Settings and Defaults
BERT
The Bit Error Rate Tester (BERT) sends a data pattern and measures the bit error rate (BER)
on the selected HSU port. The patterns that can be selected are off, mark (1111), space (0000),
1:1 (1010 alternating), 1:7 (0100-0000), 3:24, qrss (quasi-random signal source),
prb11(pseudorandom binary sequence), prb15 and prb20.
SYNC
The Synchronization field indicates if the integrated BERT has achieved synchronization
either with itself via a remote loopback or with the remote test equipment. This is an
information-only field; it is not user-configurable.
BE
The Bit Error (BE) field indicates the total number of bit errors logged. This is an
information-only field; it is not user-configurable.
ES
The Errored Seconds (ES) field indicates the total number of seconds in which errors were
detected. This is an information-only field; it is not user-configurable.
Parameter User Options Notes Default
BERT off mark space 1:1 1:7 3:24 qrss prb11
prb15 prb20 off
DIR net user net
SYNC information only–no user options
BE information only–no user options
ES information only–no user options
SES information only–no user options
CSES information only–no user options
OSS information only–no user options
BER information only–no user options
ELAP information only–no user options
LB ST information only–no user options