7. media transmisi
Post on 05-Jan-2016
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7. MEDIA TRANSMISI
Medium Transmisi dan Lapisan Fisik
Klasifikasi media transmisi
3.1 Media terpandu(guided media)
Kabel Twisted-Pair (Twisted-Pair Cable)
Kabel Koaksial (Coaxial Cable) Kabel Fiber-Optic (Fiber-Optic Cable)
Kabel Twisted-pair (Twisted-pair cable)
UTP dan STP
UTP (Unshielded Twisted-Pair) STP (Shielded Twisted-Pair)
Kategori untuk Unshielded Twisted-Pair
Kategori Bandwidth Data Rate Digital/Analog Penggunaan
1 very low < 100 kbps Analog Telephone
2 < 2 MHz
2 Mbps Analog/digital T-1 lines
3 16 MHz 10 Mbps Digital LANs
4 20 MHz 20 Mbps Digital LANs
5 100 MHz 100 Mbps Digital LANs
6 (draft) 200 MHz 200 Mbps Digital LANs
7 (draft) 600 MHz 600 Mbps Digital LANs
Konektor UTP
Perfomans UTP
Kabel Koaksial (Coaxial cable)
Kategori kabel Koaksial
Category Impedance Use
RG-59RG-59 75 Cable TV
RG-58RG-58 50 Thin Ethernet
RG-11RG-11 50 Thick Ethernet
Konektor BNC
Perfomans Kabel Koaksial
Karakteristik Pembiasan cahaya/sinar (Bending of light ray)
Perambatan Cahaya/Sinarpada Fiber-Optis
Mode-mode Perambatan cahaya
Mode-mode Perambatan cahaya
Tipe-tipe Fiber Optis
Tipe Core Cladding Mode
50/12550/125 50 125Multimode, graded-
index
62.5/12562.5/125 62.5 125Multimode, graded-
index
100/125100/125 100 125Multimode, graded-
index
7/1257/125 7 125 Single-mode
Konstruksi Fiber Optis
Tipe-tipe Konektor Kabel FO
Perfomans Fiber Optis
7.2 Media Takterpandu(Unguided Media : Wireless)
Radio Waves Microwaves Infrared
Spektrum Gelombang Elektromagnetik untuk komunikasi NirKabel (Electromagnetic spectrum for wireless communication)
Metode-metode Perambatan Gelombang (Propagation methods)
Pembagian bandBandBand RangeRange
PropagatiPropagationon
ApplicationApplication
VLFVLF 3–30 KHz Ground Long-range radio navigation
LFLF 30–300 KHz GroundRadio beacons and
navigational locators
MFMF 300 KHz–3 MHz Sky AM radio
HF HF 3–30 MHz SkyCitizens band (CB),
ship/aircraft communication
VHF VHF 30–300 MHzSky andline-of-
sight
VHF TV, FM radio
UHF UHF 300 MHz–3 GHzLine-of-
sightUHF TV, cellular phones,
paging, satellite
SHF SHF 3–30 GHzLine-of-
sightSatellite communication
EHFEHF 30–300 GHzLine-of-
sightLong-range radio navigation
Gelombang Transmisi Nir Kabel (Wireless transmission waves)
Antena Omnidirectional (Omnidirectional antennas)
Antena Unidirectional (Unidirectional antennas)
Gelombang Radio digunakan untuk komunikasi multicast , seperti radio dan televisi, dan sistem paging.
Gelombang Mikro dan Sinyal Inframerah
Gelombang Mikro (Microwaves) digunakan untuk komunikasi unicast, seperti telefon selular (cellular telephones), jaringan satelit, dan wireless LAN.
Sinyal inframerah (Infrared signals) dapat digunakan untuk komunikasi jarak pendek dengan metode perambatan segaris-pandang (line-of-sight).
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