Grass Valley NV7512 v.1.3 - Manual (Page 71)

NV7512 Audio Router • User’s Guide 61
2. Installation
Making Router Control System Connections
How to make a GSC Node Bus connection to the router control system
1 Locate the GSC Node Bus connection on the rear of the router, as shown in Figure 2-21. The
GSC Node Bus connection is labeled ‘NODE BUS’.
Figure 2-21. GSC Node Bus Connection to Control System (Rear View)
2 Connect to the ‘NODE BUS’ connection using a 75 Ω BNC connector and coaxial cable.
3 Connect the other end of the coaxial cable to the router control system.
4 On all unused GSC Node Bus connections, be sure to terminate the loop-thru by installing a
75 Ω BNC terminator.
5 If two NV7512 routers are being connected together, connect the control system expansion con-
nections. See “Router Control System Expansion Connections” on this page .
Or
If the NV7512 is being used as a standalone router, install 50
Ω BNC terminators on the control
system expansion connections.
Router Control System Expansion Connections
Router control system expansion connections enable up to four connected NV7512 routers to com-
municate with the router control system. When making control system connections, only one router
is connected directly to the router control system. This router acts as the primary router. When
making control system expansion connections, a separate connection is made from the primary
router to the connected routers. This enables the router control system to manage all connected
routers through the primary router connection. Because up to four routers can be connected
together, this procedure refers to each router as Router 1 for the primary router, Router 2 for the
second router, Router 3 for the next router being connected, and Router 4 for the final router frame
being connected.
The control system expansion connections are labeled ‘10 Base 2’ and use 50 Ω BNC connectors
and Cat3, or better, coaxial cable. The BNC terminator is supplied by NVISION (1211598).
How to make router control system expansion connections
1 Locate the expansion control connection on the rear of the routers, as shown in Figure 2-22.
The connections are labeled ‘10 BASE 2’.
Figure 2-22. Ethernet Expansion Connections to Control System (Rear View)
LOOP
THRU
GSC Node Bus
Connection
to Control System
NODE
BUS
Note Although this procedure describes connecting four routers, make connections
only to those routers being connected for your system.
10 BASE 2
10/100 BASE T
10 BASE 2
10/100 BASE T
COMMON
TO
PRI & SEC Expansion
Connections for
Control System