EXFO FTB-800 Series for FTB-1 - Manual (Page 124)

Test Setup - Test Configurator, Timer, and System
114 FTB-700G/800 Series
EtherBERT and Unframed BERT
EtherBERT and Unframed BERT
From the Test menu, tap Setup, Test Configurator, and tap on the
EtherBERT or Unframed BERT block.
Pattern

Coupled RX to TX check box, when selected (default), couples both
the TX and RX signal with the same test pattern. The Coupled RX to
TX check box is selected and not configurable for Seed A, Seed B, and
PRBS31 Unscrambled patterns.

RX Pattern Analysis check box, when selected (default), monitors the
received traffic pattern and Round-Trip Latency. When the RX Pattern
Analysis check box is selected, the payload size is rounded to the
closest multiple of 16 bytes. See BER on page 249 for more
information.

TX Pattern/RX Pattern: Select the test pattern from the list for each
direction (TX and RX) if required. Choices are PRBS9, PRBS11,
PRBS15, PRBS20, PRBS23, PRBS31 (default), Seed A
1
, Seed B
1
,
PRBS31 Unscrambled
1
, CSPAT
2
, CJTPAT
2
, CRPAT
2
, Short CRTPAT
2
,
Long CRTPAT
2
, and User Pattern.
When User Pattern is selected, enter the payload pattern hexadecimal
value.

Invert check box, when selected (cleared by default), inverts the
generated/expected test pattern meaning that every 0 will be changed
for 1 and every 1 for 0. For example, the pattern 1100 will be sent as
0011.
1. Only available for 10G LAN with Unframed without Sync (see Framing on page 92).
2. Only available for 1G optical with Framed Layer 1 (see Framing on page 92).