Adva FSP 3000R7 - CHARSYNC (Loss of Char Sync)

Standing Conditions
CHARSYNC (Loss of Char Sync)
The corresponding SNMP name for this condition is “lossOfCharSync”.
AIDTYPE Default
Severity
Probable Cause Suggested Corrective Action
CH
ETH
CR The receiver has lost
character
synchronization with
the incoming blocks
in the received
signal.
This is typically
caused either by the
incoming signal being
of a type other than
that defined by the
facility, but a failure
at the source of the
signal which causes
coding errors in the
transmitted signal, or
by bit errors on the
line which have
degraded the
incoming signal.
1 Verify that the facility is
provisioned correctly.
2 Verify that the incoming cable is
the correct cable and that the
transmit and receive ports are
connected to their proper
respective portions of the cable
(i.e. that the fibers are not
swapped between transmit and
receive).
3 Verify that the incoming fiber is
firmly connected to the receive
port associated with the facility
and that the connector is not
physically impaired by
obstructions, dirt or component
damage. Clean the connector or
replace the cable, plug or
module, as appropriate,
depending upon the cause
determined from the physical
examination.
4 Verify that a signal is present at
the cable termination and that
the signal conforms to the
required specifications (e.g.
minimum and maximum power
levels). If the signal meets the
required specifications proceed
to the next step below,
otherwise locate the source of
the signal problem upstream
and repair the problem.
5 Verify that the source of the
signal is operating correctly.
6 Replace the plug or module
supporting the facility.
Table 154: CHARSYNC (Standing Condition)
FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A 809