Exfo FTB-800 Series for FTB-1 Manual de usuario Pagina 268

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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.
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