Radyne QAM256 User Manual Page 79

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NMS-4000
Network Management System
P/N 2349-72712-01 Page 3-1
3. OPERATION
3.1. General
This chapter briefly explains the operation of the NMS-4000 System Manager.
3.1.1. DVB Management Concept
The Digital Video Broadcasting (DVB) Head-End is basically a chain of inter-linked devices.
Each device within the chain receives signals, performs its functional operation on the
signals, and passes the modified signals to the next device in the chain.
The System Manager enables easy management of these devices throughout the chain of
devices.
3.1.2. System Manager Display Concept
The System Manager main screen displays figures that represents the devices controlled by
the NMS-4000. Since each device has many parameters to manage, the main screen
displays only a small figure of the device including its name, a status indicator to check for
proper operation and a context menu for selecting device management options.
All manageable parameters of a device are categorized in several dialogs that can be opened
with the device context menu.
In addition, the main screen includes symbols that cannot be controlled or managed such as
boxes, text and arrows. These symbols help the viewer to understand the system, flow of
data, inputs, outputs, data types and other system functions.
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