EXFO FTB-8500 Series for FTB-500 - Manual (Page 442)

Expert Mode Tabs
428 FTB-8500 Series and FTB-8120NGE/8130NGE
Back-to-Back (RFC 2544)
Back-to-Back (RFC 2544)
Press TEST, Expert Mode, and Back-to-Back.

Enable Criteria: Allows to enable Back-to-Back Pass/Fail criteria. This
setting is disabled by default.
Note: Both Enable Criteria and the test itself (see Global Configuration on
page 298) have to be enabled for a specific test to be able to change its
criteria values.

Frame Size: Indicates the frame sizes selected for the test.

TX-to-RX/P1-to-P2/P2-to-P1/Local to Remote/Remote to Local: For
each frame size, enter the minimum number of frames values at
maximum throughput allowed before declaring a Fail condition.
P1-to-P2/P2-to-P1 is only available with FTB-8510B.

Status: Indicates the real-time pass/fail condition.
Grey LED: Indicates that Expert Mode is disabled or the test did not
run yet.
Green LED: Indicates that the threshold is respected (Pass).
Red LED: Indicates that the threshold is not respected (Fail).

Copy From Measurement button: Copy the performance results from
the test that ran previously and use it as the Pass/Fail criteria. If no test
ran before, default values used will be 0 Frames/Burst.