CDRismainlytoextractthedatasequencefromthereceivedsignal, andrestoretheclocktimingsignalcorrespondingtothedatasequence, therebyrestoringthespecificinformationreceived
CDRbandwidthisanimportantindicatorofCDR.Itmainlyaffectsthedatalocktimeandjitterindexoftheopticalmodule, whichdeterminesthekeyperformanceoftheopticalmodule
ThedifferencebetweenDWDMwithCDRandwithoutCDR:
(1) การส่งสัญญาณด้วย CDRhasthefunctionsofclockretimingandignalshaping, sothesignalwillbebetter
(2) โดยทั่วไป CDRaremostlyusedinhigh ความเร็วยาว distancetransmissionopticalmodules
ดังนั้น bydefaultSFP + modulesdon' thaveCDR, และ XFPmodulesmusthaveCDR
(3) Fortransceiversusedonaswitch, thereislittledifferencebetweenthetwo.YoucanchoosewithCDRorwithoutCDR
