Dcn-Ccu2 And Dcn-Ccub2 Central Control Unit - Bosch DCN Next Generation Operation Manual

Conference System
System problems
Problem
Noise can be heard in the system.
The system does not operate correctly, but you
do not know what the problem is.
9.2

DCN-CCU2 and DCN-CCUB2 Central Control Unit

Problem
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Bosch Security Systems B.V.
You cannot start the CCU
The CCU does not control the video
cameras correctly.
A trunk does not receive power from the
system and the overload LEDs on the CCU
or the extension power supply do not come
on.
A trunk does not receive power from the
system and the overload LEDs on the CCU
or the extension power supply are on.
Hint
Earth the system at one point only (refer
to DCN-CCU2 and DCN-CCUB2 Central
Control Units, page 183).
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Hint
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Operation Manual
Troubleshooting | en
An 'open-ended' DCN cable without a
cable termination plug can cause the
problem. Connect cable termination
plugs to all 'open-ended' DCN cables.
A transmitter which was connected
while being switched on can cause
the problem. Switch the transmitter
off and on.
The central control unit is not
connected to a mains power supply.
The RS232 port of the central
control unit are not configured
correctly. Refer to DCN-CCU2 and
DCN-CCUB2 Central Control Units,
page 183 for instructions that tell
you how to configure the RS232 port
of the central control unit.
The trunk is disconnected from the
CCU or extension power supply.
The trunk contains a defective
extension cable. Find the defective
extension cable and replace it.
The system mode of the CCU is set
to Standby or Off on front panel of
the CCU or conference software.
The trunk contains a defective
extension cable. Find the defective
extension cable and replace it.
The devices that are connected to
the trunk ask for too much power.
Use the calculation tool to re-
calculate the power consumption of
the devices and the extension cables
that are connected in the trunk.
2013.11 | V2.0 | DCN-NG_OM_V4.x
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