EXFO FTB-800 Series for FTB-1 - Manual (Page 141)

Test Setup - Test Configurator, Timer, and System
NetBlazer 131
Global (Fibre Channel)
BER

Test Pattern allows the selection of the test pattern.
PRBS 2^9 - 1
PRBS 2^11 - 1
PRBS 2^15 - 1
PRBS 2^20 - 1
PRBS 2^23 - 1
PRBS 2^31 - 1 (default)
User Defined allows to enter a 32-bit (4-byte) user pattern. The default
value is 0.

Invert check box when selected (cleared by default), indicates that the
test pattern is transmitted/analyzed with all bits inverted meaning that
every 0 is changed to 1, and every 1 to 0. For example, the pattern 1100
will be sent as 0011.

BER Threshold, available when the Pass/Fail verdict check box is
selected, allows the selection of the threshold value which determine
the number of accepted errors before failing the test.

If the Pass/Fail Verdict is Bit Error Count & Latency or Bit Error
Count, the accepted BER threshold range is 0 (default) to 999999.

If the Pass/Fail Verdict is Bit Error Rate & Latency or Bit Error
Rate, the accepted BER threshold range is 1.0E-14 to 1.0E00 with
default value of 1.0E-02.
Round-Trip Latency
Round trip latency indicates the average measured round trip latency
(delay) between the time the data was transmitted and received.

Round-Trip Latency Threshold (ms) allows the selection of the round
trip latency: 0.015 (default) to 8000 ms.
The round trip latency is enabled when Bit Error Count & Latency or
Bit Error Rate & Latency is selected as the Pass/Fail Verdict.