CDRismainlytoextractthedatasequencefromthereceuredsignal, andrestoretheclocktimingsignalcorr tươngingtothedatasequence, do đó, bảo vệ thông tin phản hồi.
CDRbandferenceisanimportantindicatorofCDR.Itmainlyaffectsthedirthocktimeandjitterindexoftheopticalmodule, whichdeterminesthekeyperformanceoftheopticalmodule.
Thedifferenceb betweenDWDMwithCDRandwithoutCDR:
(1) ThetransceiverwithCDRhasthefiancesofclockretimingandsignalshaping, sothesignalwillbebetter.
(2) Nói chung, CDRaremostly usedinhigh-speed, distancetransmissionopticalmodules.
Do đó, bydefaultSFP + mô-đun' thaveCDR, vàXFPmodulesmusthaveCDR.
(3) Fortransceivers usedonaswitch, thereislittledifferencebetweenthetwo.YoucanchoosewithCDRorwithoutCDR.
