EXFO FTB-800 Series for FTB-1 - Manual (Page 485)

Test Control
NetBlazer 475
Lpbk Tool Button (Loopback Tool)

LINK

Auto-Negotiation check box when selected, enables the link
auto-negotiation and allows to set the port Speed, Duplex, Flow
Control, and Local Clock parameters. Those settings are not
applied immediately to the port, they are used only when the
negotiation process is started and take effect only when the
auto-negotiation succeeds. However current settings are applied
immediately to the port when the Auto-Negotiation check box is
cleared. The Auto-Negotiation check box is automatically selected
for 1GE Electrical interface and is not configurable. Available with
10/100/1000M Electrical interface.

Speed, available with 10/100/1000M Electrical interface, allows
the selection of the interface rate: 10M, 100M, 1GE, or Auto
1
. The
negotiated speed will be displayed next to the Speed field
selection.

Duplex choices for 10M and 100M electrical interfaces are
Full Duplex (default), Half Duplex, and Auto
1
. For other rates the
Duplex is set to Full Duplex. The negotiated duplex will be
displayed next to the Duplex field selection.

Flow Control choices are TX, RX, RX and TX, None (default), and
Auto
1
. When the Flow Control is set to None, pause frames
received are ignored.
1. Auto is only available when the Auto-Negotiation check box is selected.