VeEX VePAL TX300M, User Manual

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FC-1 Test Patterns
CRPAT sequence is offered for TX jitter measurements.
CRPAT and CJTPAT are available for RX jitter tolerance measurements - use these test patterns to
test the resilience of the receiver (Clock Data Recovery - CDR) and its tolerance to signals with
jitter.
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FC-2 Payload (test patterns)
Layer 2 "Compliant" test patterns are modified to resemble a true Fiber Channel frame - the pattern's format is similar to a basic frame
which includes a Start of Frame Delimiter (SFD), End of Frame Delimiter (EFD), and Cyclic Redundancy Check (CRC).
Pseudo Random Bit Sequences (PRBS)
are commonly used to test the signal integrity of high-speed links and are defined in ITU-T
0.150 & 0.151 Recommendations – These legacy SONET/SDH/PDH test sequences may appear random but they have specific
properties that can be used to measure the quality of a link. PRBS patterns can be normal or can be inverted.
2E31-1:
147 483 647-bit pattern used for special measurement tasks, (e.g., delay measurements at higher bit rates)
2E23-1:
8 388 607 bit pattern primarily intended for error and jitter measurements at bit rates of 34 368 and 139 264 kbps
2E15-1:
32 767 bit pattern primarily intended for error and jitter measurements at bit rates of 1544, 2048, 6312, 8448, 32 064
and 44 736 kbps
2E11-1:
2047 bit pattern primarily intended for error and jitter measurements on circuits operating at bit rates of 64 kbps and N
x 64 kbps
FC-2 BERT - Payload Setup
TX300S_e-manual_D07-00-064P_RevA00