Bosch DCN Next Generation Installation & User's Instructions page 274
Digital congress network
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Also See for DCN Next Generation:
- Installation and operation manual (286 pages) ,
- Operation manual (290 pages) ,
- Installation and user instructions manual (158 pages)
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DCN Next Generation | Installation and User Instructions | Troubleshooting
Problem
You cannot operate one or more
DCN devices with their buttons
and:
•
The system gives power to the
trunks, and
•
The devices give an audio signal
to their loudspeakers or
headphones that contains noise.
A trunk does not receive power from
the system and the overload LEDs
on the central control unit or the
extension power supply do not
come on.
A trunk does not receive power from
the system and the overload LEDs
on the central control unit or the
extension power supply come on.
The devices that are connected to a
tap-off socket of a network splitter
do not operate.
The PC Control Software shows
grey icons.
The settings of the interpreter desks
were erased.
The central control unit does not
control the video cameras correctly.
Bosch Security Systems | 2007-02 | 9922 141 70525
Hint
•
The DCN contains a defective extension cable. Find the defective
extension cable and replace it. The defective extension cable can be
anywhere in the DCN.
•
The trunk is disconnected from the central control unit or extension
power supply. Refer to section 8.5.2 for instructions that tell you how to
connect a trunk to a central control unit. Refer to section 34.5.2 for
instructions that tell you how to connect a trunk to an extension power
supply.
•
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.
•
The trunk contains a defective extension cable. Find the defective
extension cable and replace it.
•
An LBB4115/00 Protected Trunk Splitter can cause the problem. The
maximum power that a protected trunk splitter gives to each tap-off is
4.5 W (refer to chapter 36). If necessary, replace the LBB4115/00
Protected Trunk Splitter with an LBB4114/00 Trunk Splitter.
•
The license code is not correct. Make sure that you enter the correct
license code. When you do not have a license code, contact your
supplier.
•
The internal back-up battery is empty or disconnected. Refer to section
8.3.4 for instructions that tell you how to connect the internal back-up
battery of the central control unit.
•
The internal back-up battery of the central control unit is empty or
disconnected. Refer to section 8.3.4 for instructions that tell you how to
connect the internal back-up battery of the central control unit.
•
The RS232 ports of the central control unit are not configured correctly.
Refer to section 8.3.3 for instructions that tell you how to configure the
RS232 ports of the central control unit.
en | 274
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