Przykłady zmiennej zawartości harmonicznych

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Przykłady zmiennej zawartości harmonicznych

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Typowe przebiegi sygnałów

 ^sin   ^sin( ³ ⁾ ^sin( ⁵ ⁾ ^sin( ⁷ ⁾ ^sin( ⁹ ⁾ ^... 

)

( t 

⁴

t 

¹₃

t 

₅¹

t 

¹₇

t 

₉¹

t 

f _

^A

    

 ^sin   ^sin( ³ ⁾ ^sin( ⁵ ⁾ ^sin( ⁷ ⁾ ^sin( ⁹ ⁾ ^... 

)

(

2 2 2 2 92

1 7

1 5

1 3

1

8

    

 t t t t t

t

f _

^A

    

/3 2/3  2 3

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Standard Data Top- Rate ology Publikacja

Half-Duplex Full-Duplex DIX-1980,

802.3-1983

10Base2

802.3a-1985

10Mb/s Liniowa kabel koncentryczny RG-

58 50 185 n/a

10Broad36

802.3b-1985

10Mb/s Liniowa kabel konc. (CATV)

antenowy 75 1800 n/a

FOIRL

802.3d-1987

10Mb/s Gwiazda dwa włókna optyczne 1000 >1000 1Base5

802.3e-1987

1Mb/s Gwiazda dwie pary skrętki CAT.2 250 n/a 10Base-T

802.3i-1990

10Mb/s Gwiazda cztery pary 100 Cat. 3 100 100 10Base-FL

802.3j-1993

10Mb/s Gwiazda dwa włókna optyczne 2000 >2000 10Base-FB

802.3j-1993

10Mb/s Gwiazda dwa włókna optyczne 2000 n/a 10Base-FP

802.3j-1993

10Mb/s Gwiazda dwa włókna optyczne 1000 n/a 100Base-TX

802.3u-1995

100Mb/s Gwiazda dwie pary 100 Cat. 5 100 100 100Base-FX

802.3u-1995

100Mb/s Gwiazda dwa włókna optyczne 412 2000 100Base-T4

802.3u-1995

100Mb/s Gwiazda cztery pary 100 Cat. 3 100 n/a 100Base-T2

802.3y-1997

100Mb/s Gwiazda dwie pary 100 Cat.3 100 100

laser (1300nm) po:

. 62.5um MMF 316 550

. 50um MMF 316 550

. 10um SMF 316 5000

laser (850nm) po:

. 62.5um MMF 275 275

. 50um MMF 316 550

1000Base-SX

802.3z-1998

1Gb/s Gwiazda

500 n/a

1000Base-LX

802.3z-1998

1Gb/s Gwiazda

10Base5 10Mb/s Liniowa kabel koncentryczny

50 (gruby)

Standard Medium

Maximum Cable Length in Meters

Standardy 802.3 - odmiany

http://www.techfest.com/networking/lan/ethernet3.htm

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Wykorzystanie kabla UTP

Styk 10Base-T Signal 100Base-TX Signal 100Base-T4 Signal 100Base-T2 Signal 1000Base-T Signal Nr 1 TD+ (Transmit Data) TD+ (Transmit Data) TX_D1+ (Transmit Data) BI_DA+ (Bidi Data) BI_DA+ (Bidi Data) 1 2 TD- (Transmit Data) TD- (Transmit Data) TX_D1- (Transmit Data) BI_DA- (Bidi Data) BI_DA- (Bidi Data) 2 3 RD+ (Receive Data) RD+ (Receive Data) RX_D2+ (Receive Data) BI_DB+ (Bidi Data) BI_DB+ (Bidi Data) 3

4 Not used Not used BI_D3+ (Bidi Data) Not used BI_DC+ (Bidi Data) 4

5 Not used Not used BI_D3- (Bidi Data) Not used BI_DC- (Bidi Data) 5

6 RD- (Receive Data) RD- (Receive Data) RX_D2- (Receive Data) BI_DB- (Bidi Data) BI_DB- (Bidi Data) 6

7 Not Used Not Used BI_D4+ (Bidi Data) Not used BI_DD+ (Bidi Data) 7

8 Not Used Not Used BI_D4- (Bidi Data) Not used BI_DD- (Bidi Data) 8

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10Base5

Transmission Rate 10 Mb/s (full-duplex not supported)

Cable Type A single "thick" (10mm) coaxial cable with 50 ± 2 ohms impedance,

Maximum Segment Length 500 meters (1640 feet)

Maximum Transceiver Cable (AUI) Length 50 meters (164 feet)

Maximum Number of Transceivers per Segment 100

Connecter Technology N-type coaxial connectors, barrel connectors, &

terminators

Signal Encoding Manchester encoding

10Base5 Facts

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10Base 2

Transmission Rate 10 Mb/s (full-duplex not supported)

Cable Type A single "thin" (5mm) coaxial cable with 50 ± 2 ohms impedance,

RG58A/U or RG58C/U,

Supports bend radius of 5 cm (2 inches),

Maximum Segment Length 185 meters (606.9 feet)

Minimum Spacing Between Stations 0.5 meters

Maximum Number of Transceivers per Segment 30

Connecter Technology BNC Tee coaxial connectors, barrel connectors, &

terminators

Signal Encoding Manchester encoding

10Base2 Facts

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10 Base T

Transmission Rate 10 Mb/s (20 Mb/s in optional full-duplex mode)

Cable Type two pairs of Category 3 or better unshielded twisted pair (UTP) cabling,100-ohm impedance rating

Maximum Segment Length 100 meters (328 feet)

Maximum Number of Transceivers per Segment 2

Connecter Technology RJ-45 style modular jack (8-pins)

Signal Encoding Manchester encoding

10Base-T Facts

8

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10 BROAD 36

Transmission Rate 10 Mb/s (full-duplex not supported)

Cable Type single 75-ohm CATV broadband cable

Maximum Segment Length 1800 meters (5905 feet) Maximum Total Span (Multiple Segments) 3600 meters (11811 feet)

Signal Encoding modulated radio frequency (RF

10Broad36 Facts

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10 BASE F

Transmission Rate 10 Mb/s (20 Mb/s in optional full-duplex mode) two multi-mode fiber optic cables (MMF), typically 62.5/125 fiber,

(62.5 micron fiber core with 125 micron outer cladding) 850 nanometer light wavelength

Maximum Segment Length 2000 meters (6561 feet)

Maximum Number of Transceivers per Segment 2

Connecter Technology ST connector (also known as BFOC/2.5)

Signal Encoding Manchester encoding

10Base-FL Facts

Cable Type

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100 BASE elementy wspólne

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100 Base TX

Transmission Rate 100 Mb/s (200 Mb/s in optional full-duplex mode) two pairs of Category 5 unshielded twisted pair (UTP) cabling,

100-ohm impedance rating,

(Optionally supports 150 ohm shielded twisted pair (STP) cabling)

Maximum Segment Length 100 meters (328 feet)

Maximum Number of Transceivers per Segment 2

RJ-45 style modular jack (8-pins) for UTP cabling (Optionally supports 9-pin D-type connector for STP cabling)

Signal Encoding 4B/5B plus MLT-3

100Base-TX Facts

Cable Type

Connecter Technology

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Kodowanie 4B/5B i podobne

|___________________ ____________ _____________ _________________________|

| | Symbol Type | Symbol | Code Group | Meaning | |___________________|____________|_____________|_________________________|

| | Line State | I | 11111 | Idle | | | Symbols | H | 00100 | Halt | | | | Q | 00000 | Quiet | |___________________|____________|_____________|_________________________|

| | Starting | J | 11000 | First Byte of SD | | | Delimiter | K | 10001 | Second Byte of SD | |___________________|____________|_____________|_________________________|

| | Control | R | 00111 | Logical Zero (Reset) | | | Indicators | S | 11001 | Logical One (Set) | |___________________|____________|_____________|_________________________|

| | Ending Delimiter | T | 01101 | Terminates Data Stream | |___________________|____________|_____________|_________________________|

| | Data Symbols | 0 | 11110 | B'0000' (X'0') | | | | 1 | 01001 | B'0001' (X'1') | | | | | ... | ... | | | | | ... | ... | | | | 9 | 10011 | B'1001' (X'9') | | | | A | 10110 | B'1010' (X'A') | | | | B | 10111 | B'1011' (X'B') | | | | C | 11010 | B'1100' (X'C') | | | | D | 11011 | B'1101' (X'D') | | | | E | 11100 | B'1110' (X'E') | | | | F | 11101 | B'1111' (X'F') | |___________________|____________|_____________|_________________________|

| | Invalid Symbols | V | 00001 | Invalid | | | | V | 00010 | ... | | | | | ... | ... | |___________________|____________|_____________|_________________________|

1. 8B/10B IBM ESCON fibre optical channel protocol, ATM i 1000BASE X 802.3z

2. 5B/6B 100VG AnyNet 100 Mbps LAN protocol IEEE 802.12

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100 Base FX

Transmission Rate 100 Mb/s (200 Mb/s in optional full-duplex mode) two multi-mode optical fibers (MMF),

typically 62.5/125 multi-mode fiber, 1300 nanometer light wavelength Half-Duplex: 412 meters (1351 feet) Full-Duplex: 2000 meters (6561 feet)

Maximum Number of Transceivers per Segment 2

duplex SC connector preferred,

ST connector and FDDI MIC connector also permitted

Signal Encoding 4B/5B

100Base-FX Facts

Cable Type

Maximum Segment Length

Connecter Technology

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100 Base T4

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100 Base T4

Transmission Rate 100 Mb/s (full-duplex not supported)

four pairs of Category 3 or better unshielded twisted pair (UTP) cabling,

100-ohm impedance rating

Maximum Segment Length 100 meters (328 feet)

Maximum Number of Transceivers per Segment 2

Connecter Technology RJ-45 style modular jack (8-pins)

Signal Encoding 8B6T

100Base-T4 Facts

Cable Type

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100 Base T2

Transmission Rate 100 Mb/s (200 Mb/s in optional full-duplex mode) two pairs of Category 3 unshielded twisted pair (UTP) cabling,

100-ohm impedance rating

Maximum Segment Length 100 meters (328 feet)

Maximum Number of Transceivers per Segment 2

Connecter Technology RJ-45 style modular jack (8-pins)

Signal Encoding PAM5x5

100Base-T2 Facts

Cable Type

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Repeatery 100 klasy I i II

•Repeater klasy I

• zamienia dane na postać cyfrową

• może łączyć segmenty o rożnym sposobie sygnalizacji

• znaczne opóźnienie w przetwarzaniu sygnałów

• tylko jeden reapeater klasy I w domenie kolizyjnej

•Repeater klasy II

• zmienia sygnał w formie analogowej

• łączy segmenty o zgodnym sposobie sygnalizacji (TX i FX)

• małe opóżnienie

• maksymalnie dwa repeatery klasy II w domenie kolizyjnej

I I

I

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Czy GBE i XEBE są dla mnie ?

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100 MB/s w porównaniu do 1GB/s

MII/GMII Gigabyte Media Independent Interface PCS Physical Coding System

PMA Physical Media Attachment

PMD Physical Media Dependent

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Czas ustalania standardów 100 i 1000

HSSG = Higher Speed Study Group

PAR = Project Authorization Requests

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Odmiany 1GB

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1000 Base X - światłowód

Transmission Rate

1000 Mb/s (2000 Mb/s in optional full-duplex mode)

two 62.5/125 or 50/125 multi-mode optical fibers (MMF), or

two 10 micron single mode optical fibers (SMF), 1270 to 1355 nanometer light wavelength Half-Duplex MMF & SMF: 316 meters (1036 ft) Full-Duplex MMF: 550 meters (1804 ft)

Full-Duplex SMF: 5000 meters (16,404 ft) Maximum Number of Transceivers per

Segment 2

Connecter Technology duplex SC connector

Signal Encoding 8B/10B

1000Base-LX Facts

Cable Types

Maximum Segment Length Transmission Rate

two 62.5/125 or 50/125 multi-mode optical fibers (MMF),

770 to 860 nanometer light wavelength Half-Duplex 62.5/125: 275 meters (902 ft) Half-Duplex 50/125: 316 meters (1036 ft) Full-Duplex 62.5/125: 275 meters (902 ft) Full-Duplex 50/125: 550 meters (1804 ft) Maximum Number of Transceivers per

Segment 2

Connecter Technology duplex SC connector

1000Base-SX Facts

Cable Types

Maximum Segment Length

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1000 Base CX i T przewody miedziane

Transmission Rate

specialty shielded balanced copper jumper cable assemblies

("twinax" or "short haul copper") Half-Duplex 25 meters (82 ft) Full-Duplex 25 meters (82 ft) Maximum Number of Transceivers per

Segment 2

9-Pin shielded D-subminiature connector, or 8-Pin ANSI Fibre Channel Type 2 (HSSC) connector

1000Base-CX Facts

Cable Types

Maximum Segment Length

Connecter Technology

Transmission Rate

4-pairs of Category 5 or better cabling, 100-ohm impedance rating

Maximum Segment Length 100 meters (328 ft) Maximum Number of Transceivers per

Segment 2

Connecter Technology 8-Pin RJ-45 connector

Signal Encoding PAM5

1000Base-T Facts

Cable Types

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Transmisja 1000Base T

CAT 5 E = TIA/EIA-568-A ANNEX E spełniająca wymóg pomiaru:

PS NEXT = PowerSum (P1) =

**10*log**

₁₀

(10

NEXT(P2)/10

+10

NEXT(P3)/10

+10

NEXT(P4)/10

)

gdzie: Pn – numer pary w kablu czteroparowym (n=1,2,3,4) ELFEXT = FEXT nie tłumiony przez długość L kabla

return loss = straty odbiciowe

delay skew = max. dopuszczalna różnica opóźnień wynosi 45-50 ns.

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Nadajnik/odbiornik 1000BT

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AUTOMATYCZNA NEGOCJACJA

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1000 Base – Zasięgi

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Przykłady zmiennej zawartości harmonicznych