EXFO FTB-800 Series for FTB-1 - Manual (Page 26)

Physical Interfaces and LEDs
16 FTB-700G/800 Series
100M-4.25G (PORT #1/#2)
100M-4.25G (PORT #1/#2)
The 100M-4.25G PORT #1 can be used for optical Transport, Ethernet, Fibre
Channel, or Packet Sync test applications.
The 100M-4.25G PORT #2 is only used for optical Ethernet, Fibre Channel,
and Packet Sync test applications.
Supported rates:

For Transport Optical Interface (OTN/OC-N/STM-N): OC-1/STM-0,
OC-3/STM-1, OC-12/STM-4, OC-48/STM-16, OTU1
Plug the SFP module into the SFP/SFP+ PORT #1 slot on the module.

For Ethernet, Packet Sync, and Fibre Channel Optical Interface:
100Mbit/s, 1000 Mbit/s, 10Gbit/s, CPRI/OBSAI 2.4576/3.072 Gbit/s, Fibre
Channel 1X/2X/4X.
Plug the SFP module into the 100M-4.25G PORT #1 or PORT #2 slot on the
module.
Note: Use only EXFO supported transceivers. Refer to the Specifications on
page 507 for the list of supported transceivers. Using non-supported
transceivers can affect the performance and accuracy of the test.
Note: Do not replace a SFP/SFP+ while the test is running to avoid distorting
statistics. First stop the test case, replace the SFP/SFP+ and then restart the
test.