Pseudo Random Binary Sequence
The Pseudo Random Binary Sequence (PRBS) feature enables data integrity checks between NCS 1014 trunk and client links without generating client traffic.
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The PRBS feature must be enabled on both the transmitting and receiving ports to ensure error-free traffic during link bring-up. The transmitting port creates and sends a bit pattern to the peer device. The NCS 1014 device verifies that the correct pattern is received. Additionally, PRBS is supported on the ODU4 controller by the 1.2T card.
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You can configure PRBS on the NCS 1014 trunk and client ports of a 1.2T, 2.4T, and 2.4TX cards.
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The EDFA2 card supports PRBS configuration only on Coherent Probe port.
PRBS modes
PRBS operates in several modes, each offering unique functionality:
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Source mode — The NCS 1014 trunk port generates a PRBS signal on the line continuously according to the configured PRBS pattern
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Sink mode — The NCS 1014 trunk port locks onto the ingress signal according to the configured pattern, analyzes, and reports the errors.
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Source-Sink mode — The NCS 1014 trunk port acts as both the PRBS transmitter and receiver, meaning it generates a PRBS signal according to the configured pattern, locks onto the ingress signal with the same pattern, and reports the errors.