Exfo FTB-800 Series for FTB-1 Instrukcja Użytkownika Pobierz pdf (Strona 124)

100

101

Test Setup - Test Configurator, Timer, and System

114 FTB-700G/800 Series

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

, Seed B

PRBS31 Unscrambled

, CSPAT

, CJTPAT

, CRPAT

, Short CRTPAT

Long CRTPAT

, 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).

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