EXFO FTB-8500 Series for FTB-500 - Manual (Page 174)

Traffic Analyzer Tabs
160 FTB-8500 Series and FTB-8120NGE/8130NGE
Ethernet TX
Ethernet TX
Note: Available with BERT test with Framed Layer 1 and Framed Layer 2 only.
Press TEST, Traffic Analyzer, and Eth. TX.
PHY Alarm Generation
Note: Available with 10Gig-E interface only.

Type: The following alarms are available:
Link Down: Generates a continuous PCS error (block error).
Local Fault: Generates a local fault sequence.
Remote Fault: Generates a remote fault sequence.

On/Off button: The On/Off button is used to activate/deactivate the
selected alarm. This setting is disabled (Off) by default.