DTX

Jan 17, 20110 likes634 views

Micom Group

DTX serija kablovskih analizatora, osnovne funkcije, parametri sertifikacije...

1Fluke NetworksDTXPresenter: Mihajlo Prerad, Micom TM InternationalFluke Networks Authorized Distributor

V I S I O N3Micom TM InternationalFluke Networks Authorized Distributor

Micom GroupSLOVENIJA (Micom Electronics) SRBIJA (Micom TM International)HRVATSKA (Micom Elektronika)BOSNA I HERCEGOVINA (Micom BH)BUGARSKA (Bul Tehna)MICOM TM INTERNATIONAL | MICOM GROUP MEMBER

Šta je sertifikacija? “Da li performanse nekog kabla zadovoljavaju parametre propisane premaTIA iliISO standardu”Definicija tih performansi i nivoa koje treba zadovoljiti (“Kategorije ili Klase”) je definisana standardima: TIA-568B standard(Cat 5e, Cat 6) ISO 11801 i IEC 61935 (Class C, D , E i F)

Zašto sertifikacija?7Dokaz kvaliteta (sertifikat): Kvalitet komponenti + kvalitet radnikaDokumentacija: Izdavanje validnih sertifikata po TIA/EIA-568-B i ISO/IEC 11801 standardimaGarancija: obezbeđivanje garancije proizvođača kablova

REŠENJE: DTX8 Najbrži CAT 6 autotest: samo 9 sekundi!

10Gighttp://www.flukenetworks.com/fnet/en-us/products/DTX+CableAnalyzer+Series/Overview

WiremapIdentifikacija fizičke greške instalacije:Kratak spoj između bilo koje dve parice10Pravilan završetak svake parice

Pogrešno ožičenje (split pairs, reverse pairs)PASS/FAIL

Propagation delay11Vreme potrebno da signal poslat sa jednog kraja stigne na drugi krajLimit: 555ns

Delay skewRazlika u propagacionom kašnjenju između najbržih i najsporijih paricaLimit: 50nsIdealan <25nsUobičajen 25 – 50ns12

Količina izgubljenog signala u prenosnom linku (izraženo udB)PredajniksignalaPrijemnikSignalaGubitakInsertion Loss (Attenuation)

Insertion lossProporcionalno raste sa dužinom i frekvencijomZa svakih -6dB gubitka, originalni signal slabi za 50% vrednosti14

X-talkSlanjeFEXTNEXTPreslušavanje meri količinu signala smetnje između jednog para žica i drugog para žicaNEXT meri preslušavanje na izvoru signala –“Near End”FEXTmeri preslušavanje na prijemniku signala – “Far End”FEXT nije potrebno meriti na Cat 5 kablu pošto šum ne ulazi u izvor signala

NEXT vrednosti merenjaNajgora vrednostNajgora vrednost: Najniža vrednost (dB).Obično se javlja na višim frekvencijama

NEXT vrednosti merenjaNajgora MarginaNajgora margina: +4.3dB marginana 2.9MHzNajgora margina se može javiti na bilo kojoj frekvenciji

NEXT - Worst Case MarginMargina: Razlika između izmerene vrednosti i pass/fail vrednosti standardaPozitivna margina: bolje od minimumaNegativna margina: lošije od minimumaWorst case:Najmanja marginaTačka koja je najbliža donjoj granici propisanog standarda

NEXT HeadroomWorst case NEXT Margin za sve NEXT testove6 pair kombinacija za Main Unit6 pair kombinacija za Remote UnitHeadroom – kvalitet linkaPozitivan = PASSVeća vrednost je bolja

Četiri para – full duplexHorizontalno kabliranjeSwitchRadna stanicaGigabit Ethernet (1000BASE-T)

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DTX

1. 1Fluke NetworksDTXPresenter: Mihajlo Prerad, Micom TM InternationalFluke Networks Authorized Distributor

2. 2N E T W O R KS U P E R

3. V I S I O N3Micom TM InternationalFluke Networks Authorized Distributor

4. Micom GroupSLOVENIJA (Micom Electronics) SRBIJA (Micom TM International)HRVATSKA (Micom Elektronika)BOSNA I HERCEGOVINA (Micom BH)BUGARSKA (Bul Tehna)MICOM TM INTERNATIONAL | MICOM GROUP MEMBER

5. 5SERTIFIKACIJA

6. Šta je sertifikacija? “Da li performanse nekog kabla zadovoljavaju parametre propisane premaTIA iliISO standardu”Definicija tih performansi i nivoa koje treba zadovoljiti (“Kategorije ili Klase”) je definisana standardima: TIA-568B standard(Cat 5e, Cat 6) ISO 11801 i IEC 61935 (Class C, D , E i F)

7. Zašto sertifikacija?7Dokaz kvaliteta (sertifikat): Kvalitet komponenti + kvalitet radnikaDokumentacija: Izdavanje validnih sertifikata po TIA/EIA-568-B i ISO/IEC 11801 standardimaGarancija: obezbeđivanje garancije proizvođača kablova

8. REŠENJE: DTX8 Najbrži CAT 6 autotest: samo 9 sekundi!

9. Level IV preciznost

10. TIA/EIA-568-B i ISO/IEC 11801 standardi

11. Opcioni moduli:

12. SM/MM fiber

13. Compact OTDR

14. 10Gighttp://www.flukenetworks.com/fnet/en-us/products/DTX+CableAnalyzer+Series/Overview

15. Parametri sertifikacije9

16. WiremapIdentifikacija fizičke greške instalacije:Kratak spoj između bilo koje dve parice10Pravilan završetak svake parice

17. Pogrešno ožičenje (split pairs, reverse pairs)PASS/FAIL

18. Propagation delay11Vreme potrebno da signal poslat sa jednog kraja stigne na drugi krajLimit: 555ns

19. Delay skewRazlika u propagacionom kašnjenju između najbržih i najsporijih paricaLimit: 50nsIdealan <25nsUobičajen 25 – 50ns12

20. Količina izgubljenog signala u prenosnom linku (izraženo udB)PredajniksignalaPrijemnikSignalaGubitakInsertion Loss (Attenuation)

21. Insertion lossProporcionalno raste sa dužinom i frekvencijomZa svakih -6dB gubitka, originalni signal slabi za 50% vrednosti14

22. X-talkSlanjeFEXTNEXTPreslušavanje meri količinu signala smetnje između jednog para žica i drugog para žicaNEXT meri preslušavanje na izvoru signala –“Near End”FEXTmeri preslušavanje na prijemniku signala – “Far End”FEXT nije potrebno meriti na Cat 5 kablu pošto šum ne ulazi u izvor signala

23. NEXT vrednosti merenjaNajgora vrednostNajgora vrednost: Najniža vrednost (dB).Obično se javlja na višim frekvencijama

24. NEXT vrednosti merenjaNajgora MarginaNajgora margina: +4.3dB marginana 2.9MHzNajgora margina se može javiti na bilo kojoj frekvenciji

25. NEXT - Worst Case MarginMargina: Razlika između izmerene vrednosti i pass/fail vrednosti standardaPozitivna margina: bolje od minimumaNegativna margina: lošije od minimumaWorst case:Najmanja marginaTačka koja je najbliža donjoj granici propisanog standarda

26. NEXT HeadroomWorst case NEXT Margin za sve NEXT testove6 pair kombinacija za Main Unit6 pair kombinacija za Remote UnitHeadroom – kvalitet linkaPozitivan = PASSVeća vrednost je bolja

27. Četiri para – full duplexHorizontalno kabliranjeSwitchRadna stanicaGigabit Ethernet (1000BASE-T)

28. LAN EquipmentAttenuated SignalSignal 1WorkstationReceiveTransmitFEXTSignal 2 ReceiveTransmitViše parova – paralelni prenosFar-End Crosstalk (FEXT) unosi smetnjeSNR = Equal Level Far-End Crosstalk (ELFEXT)

29. SignalFEXTELFEXT(signaldifferencein dB)AttenuationPower Sum ELFEXTPSELFEXTCombined affects of all 3 disturbing pairs = Power Sum

30. Signal A to BSystem BTransmitSignal B to ADirectional CouplerReceiveReturn Loss Količina signala koji se reflektuje nazad izvoru

31. Uzrok: varijacija impedansi u konektorima i kablu

32. Razlog: loš krimp ili konekcija u RJ45 konektoruSystem ATransmitReceive

33. ACR - Attenuation to Crosstalk RatioDrugi izraz za Signal-to-Noise Ratio (SNR)Bitan parametar performansi:Razlika između NEXT-ai Atenuacije (u dB)Pokazuje koliko je atenuirani signal jači od preslušavanja (crosstalk) na prijemnom krajuPremali ACR – veliki broj “bit error rate”

34. Intuitivan korisnički interfejsKonektori za adaptereGumenizovana IP zaštitaKolor displejFunkcijski tasteriTestMMC slotRotirajuće dugme i kursori za pomeranjeUSB i serijski interfejsiPower dugmeTalk dugme

35. DTX report26

36. 27Pitanja?

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