Bit Error Rate Testers (BERT)
In
digital communications systems, Bit Error Rate (BER) is the number
of received bits that have been altered due to noise, interference,
and distortion. Testers are used by digital communications
system developers to run BER tests on serial or parallel data
streams. A common test scenario will include BER sensitivity
testing, which includes introducing artificial impairments in a
communications link in order to characterize the impact of the
impairment on the Bit Error Rate.
Common types of BERT stress patterns include PRBS7, PRBS9, PRBS10, PRBS11, PRBS15, PRBS20, PRBS21, PRBS23, PRBS28, PRBS31, CJPATT, SSPS-64, 0101, 1100, K28.5, K28,7, 48A.1, 48A.2, 48A.3 and 64Kbit
Applications include protocol independent BER Tester of OC-192, Fibrechannel, FB-DIMM, Infiniband, 10 GbE, 40Gbase, 100Gbase, CEI, SFP+, XFP/XFI.