RDPAT (Random Data Pattern):
Designed to provide energy across the entire frequency spectrum providing
good simple BER testing.
JTPAT (Jitter Tolerance Pattern):
Designed to verify jitter tolerance on the receivers by exposing a receiver's
CDR to large instantaneous phase jumps. The pattern alternates repeating low transition density patterns with
repeating high transition density patterns.
SNPAT (Supply Noise Pattern):
Designed to simulate the worst case power supply noise that could be
introduced by a transceiver.
Layer 2, 3, & 4 test patterns
PRBS:
2^31 -1 (147 483 647-bit pattern used for special measurement tasks, [e.g., delay measurements at
higher bit rates])
2^23 -1 (8 388 607 bit pattern primarily intended for error and jitter measurements at bit rates of 34 368
and 139 264 kbps)
2^15 -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)
2^11 -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)
Fixed:
All 0s or All 1s
User Defined pattern:
Length depends on size of frame
Inversion:
Normal or inverted
BERT Setup - Data selection - PRBS Patterns (Page 1)
Auto (Special Patterns):
For special patterns, the most significant bit of the test pattern is populated first into
the payload frame, as opposed to non-special patterns, in which the least significant bit is populated first.
BERT Setup - Data selection - Special Patterns (Page 2)
RXT-6400_Module_Manual
Page 27 of 119
