Chapter 2 Cable and Connector Types Flashcards
Current recognized cable include -
- Optical Fiber Cable 50/125, OM3, OM4
- Optical Single Mode OS1, OS2
- 100 OHM balanced twisted pair
- 50 or 75 OHM
Optical Fiber Cable Advantages
- Extended Distance
- Extended Bandwidth
- No EMI
- Low Transmission Loss
- Lightweight materials
- Secure
Optical Cable Disadvantage
- Different connector issues
- Connector manufacture not compatible
- Fan Out Kits are often required
- Break-out kits are required
- Rework connector due to splicing errors
Balanced Twisted Pair Advantages
- Large Installed base
- Proven Technology
Balanced Twisted Pair Disadvantage
- High Sensitivity to EMI
- Distance and configuration limitations
- Size and weight of the cable
- Building entrance over voltage over current protection required
COAXIAL 75 OHM Cable Advantages
- Less Interference to EMI
- High Bandwidth
COAXIAL 75 OHM Cable Disadvantage
- More Expensive
- Shield has increased the risk of ground loops
- Distance limitations
- Coax connectors may pull off
50 OHM Coax cable Advantage
Lower Impedance
Higher power over longer distances
Optical Fiber in OSP Setting is used for
- Voice
- Video
- Data
- Audio
- CATV
- Fire Detection systems
- Security
- DAS
- BAS
Fiber Optic Connectors and Adaptors
LC - Keyed low loss and secure smaller
SC - Keyed moderate loss and secure larger
ST - Keyed moderate loss secure round twist
How to calculate passive cable system attenuation (Total Loss)
- Optical Fiber Loss
- Connector Loss
- Splice Loss
- Other Component Loss
Optical Fiber Types Buffering
Loose Tube - OSP underground, direct bury, aerial limited on ISP
Tight Buffered - OSP underground, direct bury, aerial many ISP applications
Ribbon Fiber Advantages and Disadvantages
Advantage
- Mass Fusion Splicing
- High Fiber Density
- Excellent mechanical protection of fibers
Disadvantage
- High Cost
- Special fusion splicer
- Over 144 counts more shelf space and risk of damage in a rack
Common Insulator Types for copper cable
PIC - Solid Plastic Insulation
DEPIC - Dual Expanded Plastic Insulation
PULP - Paper Insulation
Foam - Single layer of expanded plastic insulation
Foam Skin - Dual Plastic Insulation Foam inside and plastic outside
PVC - Solid PVC Insulation
Methods for placing cable on pole lines -
- Lash new cable to a new strand
- Over lash new cable to existing strand or cable
- Use a self-supporting cable
RUS Rural Utility Services
PE-39 PE89
Define specifications for Aerial OSP Twisted Pair
Aerial Drop Wire
Direct Bury
Twisted pair Testing ANSI TIA 758
COAX Cable Types
Bare Aluminum
Jacketed
Self Support
Armored
OSP Twisted pair Testing
ANSI/TIA 758
Nothing impacts the design and construction of a telecommunications network more than codes, standards, and regulations
True
Code Vs Standards
A code is for safety, a Standard is for performance.
Shall Vs Should
Shall is a must, required (Code), Should is a may, desirable, would (Standard)
A Contract can change a recommendation in a requirement.
True
Codes, Standard, best practice
A CODE is a set of rules for safety
A STANDARD is a requirement or recommendation to ensure performance
A BEST PRACTICE is a widely accepted method in the industry
Hierarchy of Compliance
AHJ
Codes and Regulations
Standards
Best Practice
Manufacture’s instructions
