8
Connect between System Components
The WJ-MPU955A Operating Instructions describes the connection between the WJ-MPU955A CPU with system
controllers, a CPU switch unit, digital video encoder devices, digital video decoder devices, and layer 3 network
switch units. If you are not familiar with the above, we recommend that you read “Connect with System Devices”
section of the WJ-MPU955A Operating Instructions first.
This section will focus on new devices and connections that only associate with the WJ-ASC960 system.
■
Global Data Network and System Domains
The global data network is an IP-based network that connects two or more system domains together. The network is
also called system data control network. The system domains use this network to pass system control and operation
commands, as well as system data information, between domains.
Global Data Network Diagram
■
Global Network and System Domains
As stated on page 6, the WJ-ASC960 system only has one GX switch node. The digital video network is an IP-based
network, which is created to transmit digital video streams within a system domain or cross multiple system domains.
It is part of the GX switch node, which consists of all the GX encoder and encoder devices. When designing a new
system, we recommend that you separate the global data network and digital video network.
Digital Video Network Diagram
Domain #1
Domain #2
Domain #3
Domain #4
Global Data
Network
Digital Video
Network
Domain #1
Encoder #1
Encoder #2
Encoder #4
Decoder #1
Domain #2
Domain #3
Encoder #3
Decoder #2
WJ-GXE900
WJ-GXE900
WJ-GXE900
WJ-GXE900
WJ-GXD900
WJ-GXD900
OPERATE
STATUS
MPEG2 Encoder WJ-GXE
900
1
2
3
4
5
6
7
8
OPERATE
STATUS
MPEG2 Encoder WJ-GXE
900
1
2
3
4
5
6
7
8
OPERATE
STATUS
MPEG2 Encoder WJ-GXE
900
1
2
3
4
5
6
7
8
OPERATE
STATUS
MPEG2 Encoder WJ-GXE
900
1
2
3
4
5
6
7
8
OPERATE
1
ACT
1000
100
LINK1
STATUS
2
3
4
5
6
7
8
MPEG3 Encoder WJ-GXD
900
OPERATE
1
ACT
1000
100
LINK1
STATUS
2
3
4
5
6
7
8
MPEG3 Encoder WJ-GXD
900
