EXFO MAX-800 Series, User Manual

Page: 228 / 495

Test Results
220
MAX-800 Series
Alarms/Errors Overview
Ethernet - PCS Lanes
Note: Available with parallel interfaces only: 100 Gbit/s Ethernet Available under
the
PCS sub tab for Through Mode test providing alarms/errors for both
ports.

Skew Alarm Threshold (bits)
, available with Ethernet test application,
allows setting the threshold value that will be used to declare a skew
alarm. Not available at 100G when the RS-FEC check box is selected.

Default
restore the default skew alarm threshold value.
Alarms
Note:
For LOA and Inv. Mapping alarms see
Ethernet - PCS
on page 219.

LOBL (Loss of Block Lock)
RX
: In lock mode, 65 invalid sync fields (00 or 11) within a 1024 sync
window are received. A PCS Lane Lock alarm is cleared when
receiving 64 consecutive valid 66b sync field (01 or 10) in a row.

LOAML (Loss of Alignment Marker Lock)
RX
: In lock mode, four consecutive marker values are received that do
not match the alignment marker that the lane is currently locked to.
The LOAML alarm is cleared when the PCS Lane is declared Lock and
two valid alignment markers 16384 blocks (66b) apart are received.
Rate Range Default Value
100G 0 to 2047 928