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1. Basic Electrical Concepts
- What is electricity
- Conductors and semiconductors
- Insulators
- Magnetism and fields
- Electromagnetism
- Producing voltage
- Electrical current
- Batteries
- Resistance
- Amperes
- Capacitance
- Inductance
- Power
- Decibels (dB)
- Levels and loss
- Direct current systems
- Alternating current systems
2. Related To Telecommunications
- Voice signal
- Carbon microphone
- Transformers
- Attenuation distortion
- Envelope delay
- Loading coils
- Amplification
- Crosstalk: near-end/far end
- Echo
- Signal loss
- Frequency Vs bandwidth
- Modulation
- Sources of noise
- Signal-to-noise ratio (SNR)
- dBm scale
- dBrn
- Two wire Vs four wire circuits
- Local loop electronics
- Metallic circuits
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3. Conductors
- Insulation types
- Average Wire Gauge (AWG)
- Resistance Vs gauge
- Resistance Vs length
- Resistance Vs temperature
- Effects of twisting wire
- Wire length Vs frequency
- Unshielded Twisted Pair (UTP) categories
- UTP specifications for loss
- Shielded twisted pair wire
- Coaxial cable
- EIA/TIA building wiring standards
- EIA 568 pair assignments
4. Grounding and Shielding
- Building codes-general
- Power grounds
- Importance of bonding and shielding
- Multiple building grounds Vs signal level
- Faults and transients
- Coupling
- RF energy
- RF leakage
- Power protection methods
- Impact on telecommunications
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