COFDM Transceiver
Zviri Mukati
Chii chinonzi COFDM Transceiver?
COFDM Transceiver maviri emidziyo inogona kuwana uye kutumira kunze data nevhidhiyo. COFDM transmitter uye inogamuchira ndeye nzira imwe batanidzo, inongotsigira unidirectional kutapurirana.
Iyo COFDM transceiver ine maviri seti eCOFDM transmitters uye anogamuchira, iyo inofambisa nenzira dzakapesana kuitira kuti mudziyo mumwe ugamuchire uye kutumira data, Video, uye odhiyo kune imwe paired mudziyo. Saka COFDM Transceive ndeye nzira mbiri dzekutumira link.
Ose ari maviri COFDM transceiver ane ethernet IP RJ45 zvibatanidza, rakafanana netambo yemambure isingaoneki. Inotsigira kubatanidza IP kamera uye zvakare inotsigira kubatanidza maviri ari kure-makomputa, inotsigira kumhanya ping mirairo paWindows OS CMD, iyo ichave mhinduro pane iyo nguva yekutumira.
Nzira yekusarudza COFDM Transceiver?
Pakusarudza COFDM transceiver, ungafanira kufunga zvinhu zvinoverengeka:
maitikiro
COFDM transmitters uye vanogamuchira vanofambisa mune imwe nzira, saka kamwe chete frequency inoda kutariswa. COFDM transceivers ndeye bidirectional transmissions, saka mafrequency maviri anoda kutariswa. Iwo maviri ma frequency range anofanirwa kupatsanurwa zvakanyanya sezvinobvira kudzivirira kukanganisa. Kuti ubvise kusvibiswa uye kudzivisa kupindira, zvinodikanwa zvakare kufunga kuwedzera wave pass sefa.
The specific frequency range can be from 170 kuti 860 MHz. Semuyenzaniso, select 300Mhz for the uplink frequency and 600Mhz for the downlink frequency.
The specific choice should also consider the local frequency occupancy situation. If there is DVB-T or DVB-T2 digital TV in the local area, it is also necessary to avoid the frequencies that have been selected by digital TV as much as possible.
After selecting the frequency for transmission, the frequency of the receiver must also be kept in the same range to complete transmission and reception.
Bandwidth
Unlike digital TV, which has 6, 7, and 8Mhz bandwidth, the COFDM transceiver’s bandwidth can be customized, such as 2MHZ and 4MHz.
Power gudzazwi
Iyo amplifier yemagetsi yataurwa pano chishandiso chinogona kuwedzera simba reiyo COFDM chiratidzo chinobuda kubva kune transmitter, iyo inogona kuvandudza chiratidzo chechiratidzo uye kuvhara.
Iyo simba amplifier yeCOFDM transmitter inoda kuchengetedza chiratidzo mutsara uye kunyatsoshanda. nyanya, sarudza yakakodzera simba amplifier zvichibva pane chinhambwe chaunoda kuendesa. Inotevera tafura yetsamba pakati pekutapurirana chinhambwe uye simba amplifier yereferensi yako.
| Power gudzazwi | THE | NLOS |
| 500MW | >10Km | <300M |
| 1W | >30Km | <500M |
| 5W | >60Km | <1500M |
| 20W | >120? km | <3000M |
| 50W | >200Km | <5000M |
| 100W | >250Km | <10Km |
utetsa
Sensitivity inoreva kugona kweasina waya vhidhiyo transmitter kufambisa masaini asina simba uye kuti agamuchirwe neanogamuchira..
Sensitivity inowanzoyerwa mumadecibel (db) kana decibel milliwatts (dBm) uye inomiririra iyo shoma chiratidzo chesimba nhanho iyo transmitter inogona kuona uye kugadzirisa.
Iyo yakakwirira yekunzwa, zviri nani kuita uye huwandu hwekutumira vhidhiyo isina waya.
Zvigadzirwa zveCOFDM Transceiver
COFDM inowanzo ine maviri COFDM anoshanda ma frequency kubva 170Mhz kusvika 860Mhz. Mafrequency akasarudzwa anofanirwa kunge ari kure kure sezvinobvira kudzivirira kupindirana.
Mukushandisa chaiko, zvinodikanwa kuwedzera PA simba amplifier, sefa, uye antenna inoenderana nehuwandu hwekushanda.
Iyo pasuru yeCOFDM Transceiver
COFDM transceiver, zvakare yakanzi Bidirectional COFDM Ethernet Radio, Bidirectional Wireless Ethernet Bridge.
Unogona here kugadzirisa iyo frequency 340Mhz uye 554Mhz COFDM transceiver kwandiri?
Ehe.
Nei mafirita maviri pa transciever achishandiswa? Sefa imwe yeRX uye imwe PA yeTX yakakwana?
- Mafirita anowedzerwa kudzivirira kuvhiringa kana kukanganiswa nemimwe michina.
Ndapota edza transceiver kutanga usina kubatanidza sefa. - Iyo transmitter inowedzera sefa nekuti ine simba amplifier, Ichabudisa chiratidzo chakasimba kuti usapindira nemimwe michina iri mundege.
- Iyo inogamuchira inowedzera sefa inobvumira mugamuchiri kugamuchira chete chiratidzo chaanoda uye kudzivirira clutter, uye kuti chiratidzo chekunzwa kunovandudzwa.
- Iwe unofanirwa kubatanidza sefa kana kureba kwekufambisa kusiri kure kana simba rechiratidzo rakashata kwazvo muyedzo.
- Kana iyo transmitter isingawedzere sefa, inogona kukanganisa kutonga kwendege kana bhatiri remagetsi. Vamwe vatengi vakambosangana nechiitiko ichi, uye sefa yakagadzirisa dambudziko.
- Iwe tora sampuli izvozvi uye unokurudzira kuitenga pamwe chete paunoiedza uye uchida sefa, uye zvichatora nguva yakawanda uye kutakura zvinhu kuti zviiswe.