ʻAʻole pili i ke ʻano o ka ʻāhewa ʻana o ke kaiāulu naʻauao i ke kīwī no kona hopena maikaʻi ʻole i ka ʻike, akā naʻe, aia ka hōʻailona kīwī ma kahi kokoke i nā hale noho (a me nā hale noho ʻole). Ma nā kūlanakauhale nui, ʻaneʻane maʻa mau ke kelepona kelepona, ʻoiai ʻo ka poʻe a puni lākou e kapa mau iā ia he "antenna". A inā ʻike maopopo ʻia ka ʻōnaehana hoʻokipa kīwī terrestrial (ʻoiai he ʻokoʻa paha ia mai ka antenna horned maʻamau ma ka windowsill, e kamaʻilio maoli wau e pili ana i kēia ma hope), a laila ʻike ʻole ʻia ka ʻōnaehana kelepona kelepona i ka paʻakikī i kāna hana a me ka hoʻolālā. Ke hōʻike nei au i nā ʻatikala e pili ana i kēia. Makemake au e hoʻolauna i ka poʻe hoihoi i nā loina o ka hana o nā pūnaewele CATV, a me kā lākou hana a me nā diagnostics.
- Mahele 1: Ka hoʻolālā pūnaewele CATV maʻamau
- Mahele 2: Hoʻohui a me ke ʻano o ka hōʻailona
- Māhele 3: Māhele Hōʻailona Analog
- Māhele 4: ʻĀpana hōʻailona kikohoʻe
- Mahele 5: Pūnaewele hoʻolaha Coaxial
- Mahele 6: RF Signal Amplifiers
- Mahele 7: Nā mea hoʻokipa Optical
- Mahele 8: Pūnaewele iwi kuamoʻo Optical
- Māhele 9: Ke poʻo
- Mahele 10: Hoʻoponopono i ka pūnaewele CATV
ʻAʻole wau e hoʻokaʻawale e kākau i kahi puke kikoʻī, akā e hoʻāʻo wau e noho i loko o ke kahua o ka ʻepekema a ʻaʻole e hoʻonui i nā ʻatikala me nā ʻano a me nā wehewehe o nā ʻenehana. ʻO ia ke kumu aʻu i waiho ai i nā huaʻōlelo "akamai" i ka kikokikona me ka wehewehe ʻole ʻana; ma ka googling iā lākou hiki iā ʻoe ke hele hohonu e like me kou makemake. Ma hope o nā mea a pau, wehewehe maikaʻi ʻia nā mea āpau, akā e haʻi wale wau iā ʻoe pehea e hoʻohui ai i kahi ʻōnaehana kelepona. Ma ka ʻāpana mua, e wehewehe au i ke ʻano o ka pūnaewele, a ma hope e nānā au i nā kikoʻī i nā loina o ka hana o ka ʻōnaehana holoʻokoʻa.
He ʻano lāʻau ko ka ʻupena kīwī kelepona. Hoʻokumuʻia ka hōʻailona e ke poʻo poʻo, e hōʻiliʻili i nā hōʻailona mai nā kumu likeʻole, e hoʻokumu iā lākou i hoʻokahi (e like me ka hoʻolālā pinepine i hāʻawiʻia) a hoʻouna iā lākou i ka pūnaewele hoʻolaha nui ma keʻano i makemakeʻia. I kēia lā, ʻo ka ʻupena iwi kuamoʻo, ʻoiaʻiʻo, he optical a hele ka hōʻailona i ke kaula coaxial wale nō i loko o ka hale hope.
Keʻena poʻo
ʻO nā kumu hōʻailona no ke poʻo he mau antenna satellite (he ʻumi paha) a i ʻole nā kahawai kikohoʻe i hoʻouna pololei ʻia e nā ala TV a i ʻole nā mea lawelawe kelepona ʻē aʻe. No ka loaʻa a hōʻuluʻulu ʻana i nā hōʻailona mai nā kumu like ʻole, hoʻohana ʻia nā multi-channel multi-service decoders / modulators, ʻo ia ka chassis rack-mount me nā kāleka hoʻonui like ʻole e hāʻawi i ka pilina i nā interface like ʻole, a me ka decoding, modulating a me ka hana ʻana i ka hōʻailona makemake. .
Eia, no ka laʻana, ʻike mākou i nā modula 6 no ka loaʻa ʻana o kahi hōʻailona hoʻolaha satellite a me ʻelua mau modulators output DVB-C.
A ke hana nei kēia chassis i ka wehewehe ʻana i ka hōʻailona. Hiki iā ʻoe ke ʻike i nā modula CAM, nā mea like i hoʻokomo ʻia i loko o nā TV no ka loaʻa ʻana o nā kaha kaapuni pani.
ʻO ka hopena o ka hana ʻana o kēia mau mea hana he hōʻailona hoʻopuka i loaʻa nā ala āpau a mākou e hāʻawi ai i nā mea kākau inoa, i hoʻonohonoho ʻia e ka alapine e like me kahi hoʻolālā alapine i hāʻawi ʻia. I loko o kā mākou pūnaewele, ʻo ia ka laulā mai 49 a 855 MHz, e loaʻa ana nā kahawai analog a me nā kikohoʻe ma nā ʻano DVB-C, DVB-T a me DVB-T2:
Hōʻike i ke kiko o ka hōʻailona.
Hāʻawi ʻia ka hōʻailona i hana ʻia i loko o kahi transmitter optical, ʻo ia hoʻi ka mea hoʻololi media a hoʻololi i kā mākou mau ala i loko o ka ʻenehana optical ma ka lōʻihi o ka nalu maʻamau o 1550 nm.
Mea hoʻolele ʻōpika.
Pūnaehana hoʻolaha kumu
Hoʻonui ʻia ka hōʻailona optical i loaʻa mai ke poʻo me ka hoʻohana ʻana i ka optical erbium amplifier (EDFA), i kamaʻāina i kekahi ʻoihana kamaʻilio.
Hiki ke hoʻokaʻawale ʻia kekahi mau ʻumi dBm o ka pae hōʻailona i lawe ʻia mai ka hoʻopuka amplifier a hoʻouna ʻia i nā wahi like ʻole. Lawe ʻia ka mahele e nā mea hoʻokaʻawale passive, no ka maʻalahi, waiho ʻia i loko o nā hale o nā rack-mount cross-connects.
ʻO ka mea hoʻokaʻawale Optical i loko o kahi hui hoʻokahi hoʻohui kea.
Hiki i ka hōʻailona hoʻokaʻawale i nā mea kahi, inā pono, hiki ke hoʻonui ʻia me ka hoʻohana ʻana i nā amplifiers like, a i ʻole i māhele ʻia ma waena o nā mea hana ʻē aʻe.
ʻO kēia ke ʻano o ka node wahi noho. Loaʻa iā ia kahi mea hoʻonui optical, kahi mea hoʻokaʻawale hōʻailona ma ka hale rackmount, a me kahi puʻupuʻu hoʻohele optical, kahi e hoʻohele ʻia ai nā fibers i nā mea hoʻokipa optical.
Pūnaehana hāʻawi mea kākau
ʻO nā mea hoʻokipa Optical, e like me ka transmitter, he mau mea hoʻololi liʻiliʻi: hoʻololi lākou i ka hōʻailona optical i loaʻa i kahi kaula coaxial. Hele mai nā OP i nā ʻano like ʻole a mai nā mea hana like ʻole, akā ʻo kā lākou hana maʻamau ka like: ka nānā ʻana i ka pae a me nā hoʻoponopono hōʻailona kumu, aʻu e kūkākūkā nui ai i nā ʻatikala aʻe.
Hoʻohana ʻia nā mea hoʻokipa Optical i kā mākou pūnaewele.
Ma muli o ka hoʻolālā ʻana o nā hale (ka helu o nā papahele, ka nui o nā hale a me nā puka mua, a me nā mea ʻē aʻe), hiki ke ʻike ʻia ka mea hoʻokipa optical ma ka hoʻomaka o kēlā me kēia ala, a i ʻole kekahi o nā mea (i kekahi manawa ma waena o nā hale ʻaʻole kahi optical, akā ua kau ʻia kahi kaula coaxial), i kēia I kēia hihia, ua uku ʻia ka attenuation inevitable ma nā dividers a me nā alaloa e nā amplifiers. E like me kēia, no ka laʻana:
Hoʻonui hōʻailona CATV Teleste CXE180RF
Kūkulu ʻia ka ʻoihana hoʻolaha mea kākau ma luna o nā ʻano like ʻole o ke kaula coaxial a me nā mea hoʻokaʻawale like ʻole, hiki iā ʻoe ke ʻike ma ka papa haʻahaʻa o kēia manawa ma kāu alapiʻi.
Hoʻopili ʻia nā kaula komo i loko o ke keʻena i nā mea hoʻopuka o nā mea hoʻokaʻawale mea kākau.
ʻOiaʻiʻo, i ka hapanui o nā hihia, aia kekahi mau televise i kēlā me kēia keʻena a hoʻopili ʻia lākou ma o nā splitters hou, kahi e hoʻolauna ai i ka attenuation. No laila, i kekahi mau hihia (inā he nui nā televise i loko o kahi keʻena nui), pono e hoʻokomo i nā mea hōʻailona hōʻailona hou i loko o ke keʻena, no kēia mau kumu he liʻiliʻi a nāwaliwali ma mua o nā mea nui.
Source: www.habr.com