CTI Products MCN RCD System Overview - Manual (Page 32)

MCN System Manual Hardware Installation
CTI Products, Inc.
68-10833-120
28
7.4 Network Cabling
MCN modules communicate over a network cable. Specifications for network
cabling are the following:
• 4 pair level IV or V unshielded, 24 AWG, twisted pair cable (EIA/TIA
568B).
• Maximum of 20 modules can be connected together in a segment.
• Maximum cable length is 1200 feet.
• Straight through connections.
Figure 11 shows one side of the network cable. This diagram details the pinout
and twisted pair configuration of the cable.
CA-80042-100
1
2
3
7
8
TOP VIEW
OF CONNECTOR
4
5
6
DATA +
DATA -
+POWER
NC
NC
-POWER
-POWER
+POWER
Figure 11 - MCN Cable Pinout
When cabling your system, daisy-chain the modules together and insert a network
terminator into the unused port of the first module and the unused port of the last
module in the chain. An example of what the terminator looks like is shown in
Figure 12.
CA-80025-100
100 ohm 1/8 WATT
RESISTOR
Figure 12 - MCN Network Terminator
Use of standard length cables from CTI Products is highly recommended to
provide best system performance. Standard lengths up to 100 feet can be
combined with cable couplers to create desired length cables. See section 1.3 for