58
NSM-8×1AES/NSM-7×2AES Installation and Operation Manual
Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.
Appendix B: Resource Module X-Y Network Communication
Network Connectivity
If your frame includes NEO NSM routers, you can enable X-Y network
communication via the frame’s resource module. Network connectivity
is provided via an X-Y port or an X-Y—TCP/IP connection.
X-Y (LCN) Port
The coaxial
LCN
port located on the back of each NEO frame provides
connectivity to an X-Y network. The X-Y network is a high-speed
serial interface by which Leitch routers and control panels are
interconnected. It links multiple routers and control panels in a bus
topology, using standard 75
Ω
video coax cable. The ends of the X-Y
bus must be terminated using standard 75
Ω
video terminators. Ensure
that you avoid a closed loop when mixing both coaxial and twisted pair
interfaces. Closed loops create conflicts which will lead to failure of the
X-Y control bus.
The maximum total leg length of the X-Y network is 2000 ft (615 m),
and the maximum number of devices per leg is 40.
On the 3901RES-E, you must set
SW4 DIP 6
to the
On
position to
ensure the resource module is communicating with routers on the X-Y
network. (See the
NEO FR-3901, FR-3903, and FR-3923 Mounting
Frames Installation and Operation Manual
for more details.) Figures
B-1
and
B-2
illustrate sample X-Y control bus networks.
Note
The NEO resource module must
have
res3901-rel-2-9-b7
and
later version software installed
to support X-Y router operation.
