whitepaper: screened and shielded cabling...lan: local area network nic: network interface card...
TRANSCRIPT
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
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W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
FIGURE 1: IBM. TYPE 1 CABLE
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
FIGURE 2: LAN NOISE SOURCES
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CONNECTING THE WORLD TO A HIGHER STANDARD
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W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
FIGURE 3: COMMON MODE CURRENTS
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
FIGURE 4: INTRODUCTION OF GROUND LOOPS
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
Note: Shield grounded at the TR. Note: At the WA there is a ground path to shield due to the equipment chassis or cabinet.
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
FIGURE 5: F/UTP CONSTRUCTION
FIGURE 6: S/FUTP CONSTRUCTION
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
FIGURE 7: UTP VS. F/UTP SUSCEPTIBILITY
* Data provided courtesy of NEXANS/Berk-Tek
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
FIGURE 8: UTP VS. UNGROUNDED F/UTPSUSCEPTIBILITY
* Data provided courtesy of NEXANS/Berk-Tek
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
absorption loss:alien crosstalk:balance:common mode:differential mode:electromagnetic compatibility:
equal level transverse conversion transfer loss:
fully-shielded:
ground loop:modal conversion:screen:screened:Shannon capacity model:
shield:shielded:transfer impedance:transverse converson loss:transverse conversion transfer loss:
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
BER: Bit error rateDSP: Digital signal processingELTCL: Equal level transverse conversion transfer lossEMC: Electromagnetic compatibility F/UTP: Foil unshielded twisted-pair (applicable to category 6A and lower-rated cabling)IEEE: Institute of Electrical and Electronics EngineersLAN: Local area networkNIC: Network interface cardS/FTP: Shielded foil twisted-pair (applicable to category 7 and 7A cabling)SNR: Signal-to-noise marginTCL: Transverse conversion lossTGB: Telecommunications grounding busbarTGMB: Telecommunications main grounding busbarUTP: Unshielded twisted-pair (applicable to category 6A and lower-rated cabling)Vrms: Volts, root mean square
W H I T E P A P E R : S C R E E N E D A N D S H I E L D E D C A B L I N G
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CONNECTING THE WORLD TO A HIGHER STANDARD
W W W . S I E M O N . C O . J P
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