User guide

Ethernet BERT Test
Multi Protocol Test Set 125
Alarms/Errors
Errors
³ Symbol (100/1000 Mbps): A Symbol Error is declared when an
invalid code-group in the transmission code is detected.
³ FCS: The number of received frames with an invalid FCS.
³ Alignment (10/100 Mbps): Indicates the number of received
frames without an integral number of octets in length.
³ Jabber: The number of received frames larger than 1518 (no VLAN
tag), 1522 (One VLAN tag), 1526 (Two VLAN tags), or 1530 (3 VLAN
tags) bytes with an invalid FCS.
³ Runt: The number of received frames that are smaller than
64 bytes with an invalid FCS.
³ Undersize: The number of received frames smaller than 64 bytes
with a valid FCS.
The following errors are only available with Half Duplex mode (only for
electrical interface at speeds of 10 Mbps and 100 Mbps).
³ Collision: Indicates the number of collisions on the link.
³ Late Coll.: Indicates the number of collisions that have occurred
after a 64 bytes transmission.
³ Exc. Coll.: Indicates the number of frames that were sent 16 times
unsuccessfully due to consecutive collisions.
The Errors LEDs are described as follows:
Color Meaning
Green No error.
Red A test is running and there is at least one error
present (Current).
Amber There was at least 1 error reported (History).
Black Not applicable.