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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | 10 | Events en | 422
Event message:
Call station audio path fault
Originator:
Call station in which the fault occurred.
Extra information:
----
Description:
Logs an audio path fault of a call station.
Resolve:
When the call station disconnects or when the fault is
resolved manually.
Recommended action:
Replace the call station.
Event message:
Class-A switchover
Originator:
Output channel of multi channel interface, connected
to a basic amplifier channel in which the fault
occurred.
Extra information:
----
Description:
Logs the occurrence that, in class-A mode the second
(B) relay has closed.
Resolve:
When the unit disconnects or when the fault is
resolved manually.
Recommended action:
Check the loudspeaker connections in the loop from
output A to output B.
Event message:
Cobranet interface fault OR
Cobranet network fault
Originator:
Unit in which the fault occurred.
Extra information:
Error code reported by the CobraNet interface
Description:
Internal fault in the LBB4404/00 CobraNet Interface
or CobraNet network fault. Most common faults are
network faults, such as reception and transmission
faults due to collisions, excessive network delay or
broadcast traffic. Other faults could be related to the
configuration.
Resolve:
When the error is no longer present or when another
CobraNet error occurs on the same unit)
Recommended action:
• Make sure that the CobraNet interface is not
connected to the Ethernet via a hub. Only use
(managed) Ethernet switches. Repeater networks
cause collisions.
• Make sure that the Ethernet network does not
contain any loops.
• Check the Ethernet connections and the lengths of
the Ethernet cables.
• If the Ethernet is also used to transport computer
data, configure a high priority on the switch for the
port that is used for CobraNet.
• Check if the bundle and channel numbers have
been assigned correctly. Also check that at least
one CobraNet device has a conductor priority
unequal to zero.
• Check for each bundle number if it is not used by
more than one transmitter.
• (Temporarily) disconnect other devices connected
to the network to check if these are causing faults
by transmitting corrupt packets.
For specialists only: the fault code is a reference to
the CobraNet fault description, which can be found in
the Error Code Reference part of the CobraNet
Technical Datasheet. This datasheet can be
downloaded from:
http://cobranet.info/en/pubs/manual/CobraNet_Progr
ammer_Manual_PM25.pdf