User guide

Ethernet Traffic Generation & Monitoring Test
Multi Protocol Test Set 177
Alarms/Errors Results
The Alarm LEDs are described as follows:
Errors
³ Symbol: A symbol error is declared when an invalid code group in the
transmission is detected.
³ FCS: The number of received frames with invalid FCS.
³ Alignment: Indicates the number of received frames without an
integral number of octets in length.
³ Jabber: The number of received frames larger then 1518 (no VLAN
tag), 1522 (One VLAN tag) or 1526 (Two VLAN tags) bytes with invalid
FCS.
LED Label Color Meaning
Link Down Green Link up.
Red Link down (Current).
Amber Link down was present (History).
Black Not applicable.
LOS (loss of signal) Green No LOS is present during test.
Red LOS alarm is present (Current).
Amber LOS was present (History).
Black Not applicable.
Frequency Green No frequency offset alarm is present
during the test.
Red Frequency offset alarm is present
(Current).
Amber Frequency offset alarm was present
(History).
Black Not applicable.