figure 3-1 twisted-pair wire anatomy shielded twisted pair (two pair) outer jacket braided shield...
TRANSCRIPT
Figure 3-1 Twisted-pair wire anatomy
Shielded twisted pair (two pair)
Outer Jacket
Braided shield
Foil shield
Twisted Pairs
Unshielded twisted pair (four pair)
Twisted Pair
Plastic insulation
Outer Jacket
Outer Jacket
Overall shield
Twisted Pair
ScTP (a hybrid UTP) shielded
Figure 3-2 Coaxial cable anatomy
A
CD
B
Figure 3-3 Fiber-optic cable anatomy
Buffer coating
Core
Cladding
100 - 140
microns
62.5 - 125
microns
50 - 125
microns
10 - 125
microns
Single-mode MultimodeMultimodeMultimode
Figure 3- 4 Single and Multimode Fiber-optical connectors
ST Connector SC Connector
MultimodeSingle-Mode
Figure 3-5 Bypass
PBX
PBX
PBX
PBX
Data Data
DataData
Central Office
Central Office
Central Office
Central Office
BusinessBusiness
BusinessBusiness
Bypass
Before Bypass
Figure 3-6 A LAN interconnect using microwave
BusinessBusiness
LANLAN
MicrowaveMicrowave
Figure 3-7 Satellite Coverage
Earth’s Surface
GEO 35,900 km
MEO 10,400 km
LEO 7-1400 km
MEO
LEO
Figure 3-8 LEO, MEO, GEO relative orbit levels
GEO
MEO
LEO
Figure 3-9 The electro-magnetic spectrum
30,000 MHz
3000 MHz
300 MHz
30 MHz
3 MHz
300 kHz
30 kHz
3 kHz
SHF
UHF
VHF
Short
Wave
MF
LF
VLF
Satellite Ka Band (19-22 GHz)
Satellite KU Band (10.7-12.75 GHz)
Satellite C Band (3.4-4.8 GHz)
UHF TV Broadcast
VHF TV Channels 7-13 (470-884 MHz)
FM Radio Broadcast (88-106MHzz)
VHF TV Channels (54-82 MHz)
CB Radio Channels (27 MHz)
AM Radio Broadcast (.5-1.6 MHz)
SHF – Super High Frequency
UHF – Ultra High Frequency
VHF – Very High Frequency
MF – Medium Frequency
LF – Low Frequency
VLF – Very Low Frequency
Figure 3-10 A VSAT system
VSAT Master Station
Host Computer
VSAT Terminal
Earth Station
VSAT Terminal
VSAT Terminal
VSAT Terminal
GEO Satellite
Figure 3-11 WiFi anatomy
Cable/DSL Modem
ISP (Internet Service
Provider)
ATA
Access Point
Wireless PCs
Wired PCs
VoIP Phones
Internet
Figure 3-12 WiMAX anatomy
ISP Network
WiMAX 802.16 Transmitter
Non Line-of-site Transmission
Internet
Residence or Business
Line-of-site Back Haul
WiMAX 802.16 Transmitter
Line-of-site Back Haul
Customer’s Receiver
Customer’s Receiver connects to Router/Access Point inside home.
Chapter 03
[FIG] Figure 3-1 Twisted-pair wire anatomy[FIG] Figure 3-2 Coaxial cable anatomy[FIG] Figure 3-3 Fiber-optic cable Anatomy[FIG] Figure 3-4 Single-mode and multimode connectors[FIG] Figure 3-5 Bypass[FIG] Figure 3-6 A LAN interconnection using microwave[FIG] Figure 3-7 Satellite Footprints[FIG] Figure 3-8 LEO, MEO, GEO relative orbit levels[FIG] Figure 3-9 The Electro-Magnetic Spectrum[FIG] Figure 3-10 VSAT system[FIG] Figure 3-11 WiFi anatomy[FIG] Figure 3-12 WiMAX anatomy