Introduction
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Model 3088A/I User Manual
4 • Operation
Patterns
The 3088A/I can generate and detect 511 patterns. These can be initiated either by the middle DIP switch or
by the console command dsl set pattern <off|511|511e>. When the pattern is started, the DSL framer uses its
internal 511 pattern generator for its DSL TX data instead of the data received from the serial interface. Also,
the framer’s internal BER Meter tries to detect a 511 pattern in the DSL RX Data.
Because the BER Meter always runs when the pattern generator runs, the meter will detect errors if either the
pattern is not either looped back or the remote unit is not transmitting a 511 pattern.
