CTI Products MCN RCD System Planner - Manual (Page 24)

Section 4. System Installation Options
Page 20 MCN Comparator Display System Planner
One side of the network cable is shown below. 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 10 - 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 11.
Use of standard length cables from CTI Products is highly recommended to provide best system
performance. Standard lengths are available up to 1000 feet. Standard lengths can be combined with
cable couplers to create desired length cables. Custom lengths can also be ordered.
If you do provide your own cable, be sure it meets the specifications above. The system will not work
with ordinary telephone cable.
The MCN network cable is not rated for outdoor use. The MCN system is not rated for cabling
running exposed outdoors, for example with overhead lines, due to possible lightning surges.
If you are providing your own cable for a run longer than 100 feet, a new power supply will be required
at the far end. You may use 2-pair Level IV or Level V cable instead of 4-pair. In this instance,
connect just the data pair (Pins 1 and 2).
CA-80025-100
100 ohm 1/8 WATT
RESISTOR
Figure 11 - MCN Network Terminator