CTI Products EXB-232 Asynchronous Serial System Extender - Manual (Page 21)

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Appendix A EXB Module Connectors
DC IN Connector
Connector type: 2.5 x 5.5 mm coaxial
Mating Connector: Switchcraft 760 or equivalent
Connector pinout: CTI Products, Inc. standard power supply wired with center pin positive, EXB
module can accept either pin positive, polarity routing is provided internal.
DC IN
+ -
CA-80083-100
Figure 6 DC Power Connector
NETWORK Connectors
Connector Type: standard RJ45 telephone connector, 8 position 8 contact
NETWORK OUT IN
1 2 3 4 5 6 7 8
CA-80084-100
Figure 7 RJ-45 Network Connectors
Pin Function Notes
1 Network Network connection is NOT polarity sensitive
2 Network Pins 1,2 of IN and OUT connectors tied parallel
3 + DC Power In on IN connector, Out on OUT connector
4 No Connection
5 No Connection
6 - DC Power In on IN connector, Out on OUT connector
7 - DC Power In on IN connector, Out on OUT connector
8 + DC Power In on IN connector, Out on OUT connector
Because the EXB module has higher power requirements than other MCN modules, a single
EXB module counts as two module loads if DC power is being distributed over the RJ-45
Network Connectors. For the system shown in Figure
1 , the power supplies in each building are
connected to their load limit (four modules total). The power supply for the MCN system in