Cable Installation
Original instructions
About us
Introduction
Observe these guidelines when making cable connections in an M580 system that uses a 140CRA31908 adapter module to attach S908 architectures. Using the 140CRA31908 module does not introduce constraints or limitations in terms of the architecture length and capacity.
Cables
The sample system in the illustration below uses these cable types:
Type
Description
Maximum Distance
X80 remote (copper)
The 140CRA31908 module connects the X80 remote drop to the M580 network with standard Quantum X80 cables.
We recommend the use of shielded twisted pair CAT5e (10/100 Mbps) cables, ideally ConneXium 490NT•000••.
100 m
S908 remote (coaxial)
The 140CRP93•00 S908 RIO adapter module connects the Quantum S908 remote drop to the X80 remote drop with the standard coaxial S908 cables. There is no requirement to change the hardware or cable connections to the Quantum S908 remote drop.
NOTE: The S908 cabling system consists of a linear trunk cable with line taps and drop cables that connect to each Quantum S908 remote drop.
4572 m at 1.544 Mbps (CATV)
fiber
You can use fiber cables between two remote devices. (You can also use 140NRP95400/140NRP95401C fiber converter modules for this purpose.)
single mode: 15 km
multi-mode: 2.5 km
Connections Between Devices
This sample network architecture uses both copper and fiber optic connections on the main ring to show the distances between devices in an M580 network that communicates with the S908 network via an X80 remote drop, which includes a 140CRA31908 adapter module: 
The shaded red area represents the conversion of Quantum S908 remote drops to X80 remote drops that are attached to an M580 EIO network.





1 
dual-ring switch (DRS) connection to the main ring


2 
dual-ring switch (DRS) connection to a sub-ring


3 
BMEH584040 redundant CPUs on the local racks


4 
140CRA31908 adapter module on an X80 remote drop


5 
140CRA93•00 adapter module on a Quantum S908 remote drop