EXFO FTB-800 Series for FTB-1 - Manual (Page 486)

Test Control
476 FTB-700G/800 Series
Lpbk Tool Button (Loopback Tool)

Cable Mode is available with 10/100/1000M Electrical interface.
Manual mode is selected when the Auto-Negotiation check box is
cleared and allows to select the type of cable: MDI (default) for
straight through cable or MDIX for crossover cable.
Automatic mode is selected when the Auto-Negotiation check
box is selected and allows to automatically detect the MDI or MDIX
cable type.

Local Clock is only available with 1GE electrical interface and
allows to set the provenance of the clock: Master (default), or
Slave, or Auto
1
.
Network tab
Refer to Network on page 164 for more information.
SFP/SFP+ tab
Refer to SFP/SFP+ on page 109 for more information.
1. Auto is only available when the Auto-Negotiation check box is selected.