Specifications

High Speed Data Ports 9-9
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), 511 (511 test pattern), qrss (quasi-random signal
source), and 2047 (2047 test pattern).
On the four-port HSU 530/35 Card, selecting the ds0 pattern will display another set of BERT
patterns. Additional non-latching loopback patterns are ff (1111-1111), 7e (0111-1110), 32
(0011-0010), 40 (0100-0000), ocu-a (ocu-alternating byte), csu-a (csu-alternating byte),
dsu-a (dsu-alternating byte), csu1a (csu–one repeater–alternating byte), and csu2a (csu–two
repeater–alternating byte). The results of the alternating patterns (ocu-a, csu-a, dsu-a, csu1a
and csu2a) appear in the Test Screen.
Also note that the Bit Error Rate Tester is supported on the HSU-T V11 and HSU-T 35 Cards
only if the port mode is set to dce in their Card Main Screens.
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.
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