Matrix PS System Installation and Commissioning Guide
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203
Dali Wireless Proprietary and Confidential | DW-MAN-036 Rev 06
Alarm Name
Description
Severity Alarm LED
CRC Errors on
Downstream Optical Link
Displays on an upstream unit when the
fiber signal could not be properly decoded
(most likely due to a data rate mismatch),
the received power levels are marginal, or
the fiber is dirty and requires cleaning.
Minor
Orange
CRC Errors on Upstream
Optical LInk
Displays on a downstream unit when he
fiber signal could not be properly decoded
or is incompatible, the received power
levels are marginal, or the fiber is dirty
and requires cleaning.
Critical
18.2.1
Optical Link Failure Ala rms on Daisy-chained Hosts
When an upstream host unit that reports a Sync optical failure on a downstream host,
the EMS reports a Minor alarm. On the unit, the alarm LED is solid orange. While this
failure does not affect the remotes connected to the upstream host, the optical link to
the remotes connected to the downstream host is broken, causing those units to be
offline.
For daisy-chained host units, the downstream optical link Minor alarm should be
addressed as a Critical service affecting issue.
Figure 18-2: Optical Link Failure Alarms on Daisy-chained Hosts