Bosch DCN Next Generation Installation & User's Instructions page 79

DCN Next Generation | Installation and User Instructions | Central Devices
figure 10.2: Internal view of the network controller
10.3.2 Ground
Use the ground jumper block to connect and disconnect
the system ground and the ground of the network
controller (refer to table 10.1). For example, you can
connect the system ground and the ground of the
network controller to prevent hum.
table 10. 1 : Ground jumper block (* = default)
Jumper shunt
Connected
Disconnected *
Bosch Security Systems | 2007-02 | 9922 141 70525
18
Description
Connects the system ground
and the ground of the network
controller.
Disconnects the system ground
and the ground of the network
controller.
19
Note
When you connect the system ground to the
ground of more than one device in the system,
you can create ground loops. Ground loops can
cause hum.
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