Ka ọ dị ugbu a, na mmepe nke teknụzụ ozi netwọkụ, anyị nwere nkà ngwa teknụzụ dị elu karịa, otu n'ime ha bụ ijipdh ngwa transceivers. Ebe ọ bụ na anyị ejirila pdh optical transceivers, nnyefe nke ozi emebiwo emezighị emezi nke mgbasa ozi ọdịnala.

1. Nkowa nkenke nke PDH ngwa transceiver ngwa anya

PDH netwọk ngwa transceiver na-anabata nnukwu sekit agbakwunyere na ikike ikike ọgụgụ isi nke onwe, na-etinye teknụzụ nkewa multiplexing oge, teknụzụ mgbachi dijitalụ na teknụzụ mmịpụta elekere, yana teknụzụ interface 2M mgbochi mgbochi, nke dabara adaba maka oge nwere nnukwu ntụkwasị obi chọrọ yana zuru oke. ọrụ inyeaka. Dị ka: China Mobile, China Unicom, nkwukọrịta, ọkụ eletrik, nchekwa ọha, agha, okporo ụzọ, ụgbọ elu na ndị ọzọ raara onwe ya nye netwọk nkwurịta okwu. Akụkụ ngwaike ahụ na-anabata FPGA buru ibu, nke na-ejikọta ntinye, ngbanwe, ntinye ozi na ntụgharị mkpu, nke na-eme ka sekit dị mfe ma na-eme ka ntụkwasị obi nke igwe dum dịkwuo mma.

PDH optical transceiver na-agwakọta ma tinye akara ngosi E1 wee bufee ya n'otu ụzọ eriri anya. Ọrụ njikwa netwọkụ transceiver ngwa anya PDH na-eme ka njikwa n'otu nke akụrụngwa nkwukọrịta sitere n'aka ndị ọrụ ụlọ ọrụ. Site na njikwa netwọkụ etiti, enwere ike mezue ọrụ njikwa dị ka nlekota, nhazi, nrụpụta, na nkwalite ọrụ nke akụrụngwa dịpụrụ adịpụ kwekọrọ.

2. Ọrụ isi na njirimara nke transceiver anya PDH

Nye interface njikwa netwọkụ RS232, na-akwado njikwa netwọkụ jikọtara ọnụ; (Ọdabara na-ebu-ọkwa NT-240D / 240D+) abụọ ike ọkọnọ, ibe na-ekpo ọkụ ndabere, (ọdabara na-ebu-ọkwa NT-240D / 240D +) na-enye 4 E1 azụmahịa ọdụ ụgbọ mmiri, zuru dijitalụ elekere mgbake na ezigbo igbachi teknụzụ nwere ike họrọ AC220V , DC48V, DC + 24V, DC-24V ike ọkọnọ na-enye zuru ezu obodo/ọgbọ ọgwụgwụ mkpu nlekota oru, The Ìhè agba atọ na-egosi na ọ na-akwado loopback mpaghara / nke dịpụrụ adịpụ E1, na-enye otu ekwentị gọọmentị, na-enye ọwa data RS232 transperent, na ọnụego bụ 300-19.2Kbit / s mgbanwe.

3. PDH optical transceiver ọrụ

a. E1 nnyefe: Ngwaahịa nwere ike ịghọta 4-16 E1 (2Mb / s) ngwa anya eriri nnyefe.

b.Ethernet nnyefe: site na nhọrọ Ethernet modul, anọ ọwa nke 10M / 100M adaptive Ethernet ọrụ ngwa anya eriri nnyefe nwere ike ghọtara.

Ọrụ c.Service: Enwere ike ịkwado ngwaahịa ahụ na ọrụ ekwentị ọrụ iji ghọta nkwurịta okwu azụmahịa n'etiti transceivers abụọ anya.

d.RS232 data: Ngwaahịa a na-enye ọwa data asynchronous RS232. Ọnụego data ahụ na-emegharị onwe ya n'okpuru 115.2Kb/s, na usoro data bụ ihe na-eme onwe ya.

f.Switch quantity interface: Ngwaahịa nwere ike kwadebere na relay mmepụta mgbanwe quantity interface, nke a ga-eji maka mkpu ma ọ bụ akara.