EXFO FTB-8500 Series for FTB-500 - Manual (Page 26)

Physical Interfaces and LEDs
12 FTB-8500 Series and FTB-8120NGE/8130NGE
FTB-8510B Model
Electrical 10/100/1000 Mbps Ethernet
The FTB-8510B module provides two electrical ports for 10Base-T, or
100Base-TX. The FTB-8510B-1 and FTB-8510B-2 options add respectively
1000Base-T testing capability on one or both ports.
Port connector type is RJ-45 for category 5 unshielded twisted pair (UTP)
connection.
Note: Refer to Specifications on page 453 for cable specifications.

Connect the 10/100/1000 electrical signal to be tested to the port
10/100/1000 #1 or 10/100/1000 #2.
Note: Port #1 is the port enabled with the FTB-8510B-1 module for 1000Base-T
testing.

LEDs
LED Status Description
LINK/ACT
(Green) On Ethernet link up.
Off Ethernet link down.
Flashing TX/RX activity.
DUPLEX
(Yellow) On Full Duplex mode.
Off Half Duplex mode.
Flashing Collisions are detected.