COFDM Transceiver

Ohun ti o jẹ COFDM Transceiver?

Transceiver COFDM jẹ bata ti awọn ẹrọ ti o le gba ati firanṣẹ data ati fidio. Atagba COFDM ati olugba jẹ a ona kan ọna asopọ, o nikan atilẹyin unidirectional gbigbe.

transceiver COFDM ni awọn eto meji ti awọn atagba COFDM ati awọn olugba, eyiti o tan kaakiri ni awọn ọna idakeji ki ẹrọ kan le gba ati firanṣẹ data, video, ati ohun si ẹrọ miiran so pọ. Nitorina COFDM Transceive jẹ a ọna asopọ gbigbe ọna meji.

Both COFDM transceiver has ethernet IP RJ45 connectors, o dabi okun netiwọki alaihan. O ṣe atilẹyin sisopọ kamẹra IP ati tun ṣe atilẹyin sisopọ awọn kọnputa ọna jijin meji, o ṣe atilẹyin ṣiṣe awọn pipaṣẹ ping ni Windows OS CMD, eyi ti yoo ṣe esi lori akoko gbigbe.

Bii o ṣe le yan Transceiver COFDM kan?

Nigbati o ba yan transceiver COFDM kan, o le nilo lati ro orisirisi awọn ifosiwewe:

igbohunsafẹfẹ

Awọn atagba COFDM ati awọn olugba atagba ni itọsọna kan, ki nikan kan igbohunsafẹfẹ nilo lati wa ni kà. Awọn transceivers COFDM jẹ awọn gbigbe bidirectional, nitorina awọn igbohunsafẹfẹ meji nilo lati gbero. Awọn sakani igbohunsafẹfẹ meji yẹ ki o pinya bi o ti ṣee ṣe lati yago fun kikọlu. Ni ibere lati se imukuro clutter ati yago fun kikọlu, o tun jẹ dandan lati ronu fifi àlẹmọ kọja igbi.

Iwọn ipo igbohunsafẹfẹ pato le jẹ lati 170 to 860 MHz. Fun apere, yan 300Mhz fun awọn uplink igbohunsafẹfẹ ati 600Mhz fun downlink igbohunsafẹfẹ.

Yiyan pato yẹ ki o tun gbero ipo ipo ipo igbohunsafẹfẹ agbegbe. Ti o ba wa DVB-T tabi DVB-T2 oni TV ni agbegbe agbegbe, o tun jẹ dandan lati yago fun awọn igbohunsafẹfẹ ti a ti yan nipasẹ TV oni-nọmba bi o ti ṣee ṣe.

Lẹhin yiyan igbohunsafẹfẹ fun gbigbe, awọn igbohunsafẹfẹ ti awọn olugba gbọdọ tun wa ni pa ni iwọn kanna lati pari gbigbe ati gbigba.

bandiwidi

Ko oni TV, ti o ni 6, 7, ati 8Mhz bandiwidi, bandiwidi transceiver COFDM le jẹ adani, bii 2MHZ ati 4MHz.

Power ampilifaya

Ampilifaya agbara ti a mẹnuba nibi jẹ ẹrọ kan ti o le mu agbara ifihan ifihan COFDM pọ si lati atagba, eyi ti o le mu didara ifihan agbara ati agbegbe.
Ampilifaya agbara ti atagba COFDM nilo lati ṣetọju laini ifihan agbara ati ṣiṣe. gbogbo, yan ampilifaya agbara ti o yẹ ti o da lori ijinna ti o nilo lati tan kaakiri. Atẹle yii jẹ tabili ifọrọranṣẹ laarin ijinna gbigbe ati ampilifaya agbara fun itọkasi rẹ.

ifamọ

Ifamọ n tọka si agbara atagba fidio alailowaya lati atagba awọn ifihan agbara alailagbara ati gba wọn nipasẹ olugba.

Ifamọ ni a maa n wọn ni decibels (Di) tabi decibel milliwatt (dBm) ati pe o duro fun ipele agbara ifihan agbara ti o kere ju ti atagba le rii ati ṣe ilana.

Awọn ti o ga awọn ifamọ, ti o dara julọ iṣẹ ati ibiti o ti firanṣẹ fidio alailowaya.

Awọn ọja ti COFDM Transceiver

COFDM nigbagbogbo ni awọn loorekoore iṣẹ COFDM meji lati 170Mhz si 860Mhz. Awọn igbohunsafẹfẹ ti a yan nilo lati wa ni jinna bi o ti ṣee ṣe lati yago fun kikọlu laarin.
Ni lilo gangan, o jẹ pataki lati fi kan PA agbara ampilifaya, àlẹmọ, ati eriali ti o baamu igbohunsafẹfẹ ṣiṣẹ.

Awọn package ti COFDM Transceiver

COFDM transceiver, tun ti a npè ni Bidirectional COFDM àjọlò Redio, Bidirectional Alailowaya àjọlò Bridge.

Can you customize the frequency 340Mhz and 554Mhz COFDM transceiver for me?

bẹẹni.

Why the two filters per transciever are used? One filter for RX and one PA for TX are enough?

1. Filters are added to avoid interfering with or being interfered with by other devices.
   Please test the transceiver first without connecting the filter.
2. The transmitter adds a filter because it has a power amplifier, It will emit a strong signal to avoid interfering with other equipment on the plane.
3. The receiver add filter allows the receiver to receive only the desired signal and avoid clutter, and that signal sensitivity is improved.
4. You need to connect the filter when the transmission distance is not far or the signal strength is very poor in the test.
5. If the transmitter does not add a filter, it may interfere with the flight control or the power battery. Some customers have encountered this phenomenon before, and the filter has solved the problem.
6. You take the sample now and suggest buying it together when you test it and need the filter, and it will take more time and freight to deliver it.

Can you customize the frequency 175Mhz and 320Mhz COFDM transceiver for me?