ʻIke maoli paha ʻoe e pili ana i nā Scanners Digital?

Ma ke ʻano he helehelena hoʻokolohua alanui maʻamau, hōʻike maoli ka Scanner Digital i ke ʻano uila ʻole o ka wahi hōʻike. Hoʻohana ʻia ia ma CW (Wave mau) ka hoʻāʻo hōʻailona, ​​hoʻāʻo ʻana i ke alanui no ka hoʻomaikaʻi ʻana i ka pūnaewele, a me ka hana hoʻomohala pūnaewele no nā ʻōnaehana puʻunaue lumi.

E Nānā I Nā Kaulike Kaulike A me Nā Kumuhana O Ka Manawa A Māhele ʻĀpana o ka Digital Scanner e hoʻopilikia ai i ka noiʻi.

Nā Parameter Nui o ka Digital Scanner i loko o nā ʻaoʻao Attenuator kūloko, nā hoʻonohonoho RBW (Resolution Bandwidth), nā Pūʻali Nui Pūnaewele Frequency, Etc.

ʻO ke Kumumanaʻo o RF Attenuator Setting:

(1) I ka wā e pono ai e ʻimi i nā hōʻailona liʻiliʻi, pono e hoʻonoho ʻia ke kumukūʻai Attenuation ma kahi liʻiliʻi loa, a i ʻole e hoʻohina ʻia ka hōʻailona hōʻailona i ʻimi ʻia e ka leo o lalo o ka scanner pinepine a ʻike ʻole ʻia;

(2) I ka wā e pono ai e ʻike i nā hōʻailona ikaika, pono ke hoʻonohonoho ʻia ka waiwai attenuation e like me ka hiki, inā ʻaʻole ia e hoʻokau i ka hoʻokaʻawale nonlinear i ke kaʻapuni o ka mīkiniʻimi, hōʻike i nā hōʻailona wahaheʻe, a hōʻino hoʻi i ka helehelena.

 

ʻO nā Kumukanawai RBW i hoʻonohonoho ʻia:

(1) Ke ʻimi nei i nā hōʻailona liʻiliʻi liʻiliʻi, pono e hoʻonoho ʻia ke kumukūʻai RBW ma lalo loa o ka hiki, inā ʻaʻole e hoʻopili ʻia ka hōʻailona hōʻailona a ʻaʻole hiki ke ʻike ʻia, a e ʻānai ʻia hoʻi e ka leo o ka mea scanner a ʻike ʻole loa ʻia; Akā inā inā haʻahaʻa loa ke kumukūʻai RBW, e lōʻihi loa ka manawa kahiki a hoʻopili ʻia ka mana hōʻike;

(2) Ke manaʻo nei i ka bandwidth o kahi RB Single o GSM Signal, PHS Hōʻailona a me TD-LTE kokoke i 200K, a me ka mana hoʻokolohua holoʻokoʻa, ua ʻōlelo ʻia e kau ʻia ka RBW o ka Scanner i 200KHz.

ʻO ke kumu hoʻohālikelike kaila pinepine pinepine:

(1) Ma o ka laulima ʻana o ka kānana, hoʻonohonoho i ka pālākiō Frequency Band To The LTE System Bandwidth Scale e noiʻi i nā kūlana Interference In-Band, e like me ka F-Band TDS In-Band Interferensi, GSM Secondary Harmonic Interferensi, a me DCS Intermodulation Interferensi. He aʻoaʻo e hoʻohui i ka kānana band frequency pinepine e pili ana i ka honi ʻana i ka pinepine. ʻO kahi laʻana, hoʻonohonoho ʻia ka F-Band Scrambling Investigation i 1880-1900MHz. Ke kahili pinepine ʻana, hiki ke hoʻokaʻawale ʻia kekahi awa o ka antena ma ka RRU, e pili ana i ka kānana, a me ka hoʻopili ʻana i ka port output output me ka scanner pinepine.

(2) Holoi i nā pali Frequency Adjacent ʻoi i luna a i lalo o ka pae pinepine e mākaʻikaʻi ai inā aia kekahi mau ʻōnaehana hōʻailona ʻokoʻa ma nā kaha ʻokoʻa. ʻO kahi laʻana, ke hoʻokolokolo nei i ka hihia o F-Band, hiki iā ʻoe ke hoʻonohonoho i ka pālākiō pinepine pinepine 1805MHz-1920MHz, a me ka noiʻi ʻokoʻa 1805-1920MHz. Wahi a ka hōʻailona a me ka nui o 1830MHz, 1830-1850MHz, 1850-1880MHz, a me nā hui pinepine pinepine 1900-1920MHz, e noiʻi i ka ikaika o nā hōʻailona o DCS e like me ka Waveform Interference e kōkua ai e hoʻoholo inā aia paha he DCS he wahaheʻe a he hoʻopilikia piha.

 

Ke hoʻohui nei i nā kūlana Interview In-Band a me nā kūlana Interview Out-Of-Band o nā Frequencies pili i luna a i lalo hoʻi ma nā ʻanuʻu ʻelua i luna, hiki ke kālailai ʻia i nā kaupaona hoʻoliʻiliʻi like ʻole i kahi ʻano haunaele kahi i hoʻokau ʻia ai nā nīnauele he nui.


Ka manawa o ka manawa: Feb-06-2021
Kuleana kope © 2021 Shenzhen Meiruike Electronic Technology Co., Ltd. Nā huahana i hōʻike ʻia, Kahua pūnaewele, Mīkini uila uila kiʻekiʻe-ʻoi loa, Mīkini uila, Mīkini uila uila kiʻekiʻe, ʻO ke ana uila uila, 1000v- 40kv Ka peni uila, Mahana anakahi uila kiʻekiʻe, Nā Huahana A pau