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16 Cards in this Set
- Front
- Back
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Pulling tension |
Cat 5 (4 pair 24AWG) max pulling 25lbs |
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Good cabling practices |
-Be able to freely rotate cables in zap ties-support when suspended -Never splice -Keep cable away from heat sources and glass exposed to sun -Leave pull cord in conduit -Leave 18" spare wire at outlets and connections -Don't leave large loops of spare cable |
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Separation from power |
Electromagnetic Interference (EMI) disrupts flow of information 12" from flourescent lighting 40" from transformers & electrical motors +600v require engineering calculations |
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General tips |
-Minimum connections -Overbuild (future additions) -Build to highest anticipated data rate -Know your components (never use questionable components) -Keep record of connections -Test everything -Avoid under carpet runs -Beware of firestop -Avoid external wire runs -Separation of power and communication cables (use different holes) -Each area = 2 100UTP cables or 1 UTP cable + one of another type -No photocopiers in TC or near cables |
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Marking outlets and cables |
-Mark outlet jacks with cable number and jack number and transmission type (data, tele) |
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Terminating the calbe |
-Punch down block is the main termination component -3 common types -66 type -110 type -BIX type |
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Type 66M connecting block |
-Voice or data wiring Tele companies > customer equipment -Found in ER or TC in commercial buildings |
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Type 110 connecting block |
-Permits high wiring density and better separation -Colors are marked on strips |
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BIX connecting block |
Much like type 110, has dual sided 50-clip connector wafer -Requires BIX connecting tool |
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Patch panels |
-Minimal sheath removal (0.5") of termination point - Punchdown cross connect Pros: Gas tight connections, anti corrosion and signal deterioration. Cons: Requires person with training, tools, and materials to make changes. Patch panel cross connect - horizontal cables and backbone cables are directly terminated in panels with built in jacks Pros: Patch cords connect backbone/horizontal cables to jacks > equipment > reconfiguration easy |
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Tip Conductors & Ring conductors |
Ring conductors: Blue, orange, green, brown, slate Tip: White, red, black, yellow, violet |
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Importance of pair twisting |
Cat 3: Don't untwist more than 3" Cat 5: Don't untwist more than 0.5" Cat 6: To be determined Tighter the better. Each pair has a different twist rate |
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Data connector cords |
-Cable used to connect equipment from workstation to outlet called user cords -use term cords to describe flexible stranded wire cables that connect to workstations, hubs, and patches |
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Termination types Screw terminal Insulation displacement connector (IDC) |
-Screw termination not to be used above CAT 3
-IDC contact, 66 type, 110 type, snap in type, BIX type |
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Modular connectors and outlets
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-LAN systems use modular connectors -LAN uses RJ-45, 8 pin mod connectors -10 - 100mhz -Can't use CAT5e with CAT5 connector |
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Pinouts |
-T568A and T568B different wiring patterns -Most common is A -States is B |
