PDH kho qhov muag transceiver(Plesiochronous Digital Hierarchy), quasi-synchronous digital transmission series system. PDH optical transceivers yog me me-muaj peev xwm optical transceivers. PDH optical transceivers feem ntau yog siv ua khub, tseem hu ua point-to-point applications. Lub peev xwm feem ntau yog 4E1, 8E1, 16E1.

PDH optical transceiver muaj nuj nqi: PDH optical transceiver yog tsim rau me me-muaj peev xwm hloov networking, neeg siv voj network, mobile kev sib txuas lus (chaw nres tsheb hauv paus), private network, DDN network, thiab lwm yam.

Nta ntawm PDH optical transceiver:
Nws txais kev sib xyaw ua ke nti super loj, uas muaj cov yam ntxwv ntawm kev siv hluav taws xob tsawg thiab kev ntseeg siab. Muab E1 tej thaj chaw deb loopback kuaj muaj nuj nqi, yooj yim los tswj. Muab 4 E1 raws; muaj lub tswb ua tiav, uas tuaj yeem tso saib lub tswb hauv zos thiab tej thaj chaw deb. Cov ntaub ntawv tswb (xws li lub tswb tsis ua haujlwm) tuaj yeem tshaj tawm rau cov phooj ywg los ntawm kev tswj hwm lub network. Siv transceiver integrated optical li, ruaj khov thiab txhim khu kev qha ua haujlwm. Kev tsim ib lub rooj tsavxwm ntawm tag nrho lub tshuab yog me me thiab siv tau yooj yim.

Plaub qhov zoo ntawm PDH optical transceiver:
1. Ib qho kev sib koom ua ke tus qauv thiab tus nqi sib koom ua ke muab qhov muaj peev xwm ntawm kev sib txuas ntawm cov khoom siv los ntawm cov tuam txhab sib txawv.
2. Lub peev xwm hauv kev tswj hwm network tau txhim kho zoo heev.
3. Raws li txoj cai, lub tswv yim tshiab ntawm kev kho tus kheej network tau npaj. Thaum lub teeb liab tseem ceeb ntawm kev sib kis xov xwm raug txiav tawm, nws yuav rov pib sib txuas lus ib txwm los ntawm kev kho tus kheej. v
4. Byte multiplexing thev naus laus zis tau txais los ua kom cov ceg ntoo sab sauv thiab sab qis hauv lub network yooj yim heev.

Vim tias PDH muaj qhov zoo tshaj plaws uas tau hais los saum toj no, nws yuav dhau los ua ib qho ntawm cov thev naus laus zis kom paub txog cov ntaub ntawv superhighway. Tab sis ntawm cov ceg txoj kev thiab txoj kev nkhaus txuas nrog cov ntaub ntawv loj, PDH optical transceiver cov cuab yeej tseem yuav pab tau.

PDH optical transceiver feem ntau ua tiav E1 thiab Ethernet kev lag luam nkag, thiab paub txog kev sib txuas lus taw tes ntawm E1 teeb liab thiab Ethernet teeb liab los ntawm multiplexing rau 1 optical teeb liab kis tau tus mob. Nyob qhov chaw tsawg dua, hloov tau yooj yim configuration, dual fais fab mov tiv thaiv.