EXFO FTB-800 Series for FTB-1 - Manual (Page 268)

Test Results
258 FTB-700G/800 Series
Alarms/Errors
Errors

Symbol
1
RX/TX: Invalid code-group is detected/generated in the code.

Idle
1
RX: An error is detected between the end of a frame and the beginning
of the next frame.

False Carrier
1
RX: Data is being received with invalid start of frame.

Block (available with Ethernet 10G LAN/WAN interface)
RX: Error block received in frames.

Alignment (available with 10/100Mbit/s interface)
RX: Frames without an integral number of octets in length are
received.

FCS (Frame Check Sequence)
RX: Frames with an invalid FCS are received.

Jabber
RX: Frames larger than 1518 bytes
2
with an invalid FCS are received.

Oversize (available when the Oversize Monitoring check box is
selected.)
RX: Frames larger than 1518
2
bytes with a valid FCS.

Runt
RX: Frames smaller than 64 bytes with an invalid FCS.
1. Available with Ethernet 100/100Mbit/s interface.
2. 1518 bytes for no VLAN tag, 1522 for one VLAN tag, 1526 for two VLAN tags, or 1530 for 3 VLAN tags.