User guide

3Ć4
3.1.1 Drop Cable and Communications Passive Tap
The Drop Cable (M/N 57C381) and the Communications Passive Tap
(M/N 57C380) are used to connect the Remote I/O module and the
Shark Interface module to the network coaxial cabling. The drop
cable is a threeĆfoot long multiconductor cable with a 9Ćpin DĆshell
connector at each end.
The tap provides two BNC jack connectors for connection to the
coaxial cables and terminating loads. See figure 3.2. A 9Ćpin DĆshell
connector is provided for connection to the drop cable. A schematic
of the tap can be found in Appendix E.
PASSIVE TAP
COMMUNICATIONS CARD
NETWORK
BNCĆ2 BNCĆ1
4.56" CENTER MOUNTING HOLE TO
CENTER MOUNTING HOLE
9-PIN
D-SHELL
CONNECTOR
.218” DIAMETER
MOUNTING HOLE
Figure 3.2 Ć Communications Passive Tap
3.1.2 Coaxial Cable
The Remote I/O system uses RGĆ59/U coaxial cable. Cable
specifications are in Appendix F. Figure 3.3 shows typical coaxial
cable composition.
INSULATION
CONDUCTOR
SHIELD
OUTER JACKET
Figure 3.3 Ć Coaxial Cable