Habari za Viwanda

Matukio ya utumiaji na tofauti kati ya Coaxial Cable & Cable Ethernet.

2021-03-03

Matukio ya matumizi na tofauti kati yaCoaxial Cuwezo & Cuwezo ya Ethernet

 

 

1. Cuwezo ya kakao

 

Cuwezo ya kakaosni nyaya zilizo na kondakta wa kati wa shaba aliyefungwa katika tabaka za nyaya zilizowekwa maboksi. Inajulikana na uwezo mzuri wa kupambana na kuingiliwa, usafirishaji wa data thabiti, na bei ya chini. Pia hutumiwa sana, kama vile laini za runinga zilizofungwa. Kamba nyembamba za kakao zinauzwa kwa Yuan chache kwa kila mita kwenye soko, ambayo sio ghali sana. Cuwezo ya coaxial hutumiwa kuungana na kichwa cha BNC. Cuwezo ya Koaxial inayouzwa kwenye soko kwa ujumla ni bidhaa iliyokamilishwa ambayo imeunganishwa na kichwa cha BNC. Unaweza kuichagua moja kwa moja.

 

Walakini, kulingana na uchambuzi wa sifa za kebo ya coaxial yenyewe, kupunguza ishara wakati inaposambazwa kwenye kefa ya coaxial inahusiana na umbali wa maambukizi na mzunguko wa ishara yenyewe. Kwa ujumla, kadiri mzunguko wa ishara unavyozidi kuwa juu, upunguzaji mkubwa. Upeo wa ishara ya video ni kubwa sana, inafikia 6MHz, na sehemu ya rangi ya picha imewekwa mwisho wa juu wa masafa. Kwa njia hii, wakati ishara ya video inaposambazwa kwenye kebo ya coaxial, sio tu ukubwa wa ishara ya jumla hupunguzwa, lakini pia kupunguza kwa kila sehemu ya masafa hutofautiana sana. , Hasa upunguzaji wa rangi ndio mkubwa zaidi. Kwa hivyo, nyaya za coaxial zinafaa tu kwa usafirishaji wa umbali mfupi wa ishara za picha. Wakati umbali wa usafirishaji unafikia karibu mita 200, ubora wa picha utapungua sana, haswa rangi inakuwa hafifu na kuna hali ya kupotosha.

 

Katika mazoezi ya uhandisi, ili kupanua umbali wa maambukizi, amplifier ya coaxial hutumiwa. Amplifier ya coaxial inaweza kukuza ishara ya video kwa kiwango fulani, na inaweza pia kulipa fidia vipengee tofauti vya masafa katika saizi tofauti kupitia marekebisho ya usawazishaji, ili upotoshaji wa pato la ishara ya video na mwisho wa kupokea iwe ndogo iwezekanavyo. Walakini, viboreshaji vya coaxial haziwezi kugeuzwa kwa muda usiojulikana. Kwa ujumla, ni 2 au 3 tu za amplifiers za coaxial zinaweza kuingizwa katika mfumo wa hatua kwa hatua. Vinginevyo, ubora wa usafirishaji wa video hauwezi kuhakikishiwa na marekebisho ni ngumu. Kwa hivyo, wakati wa kutumia kefa ya coaxial katika mfumo wa ufuatiliaji, ili kuhakikisha ubora wa picha, umbali wa usafirishaji kwa ujumla umepunguzwa kwa karibu mita mia nne au tano.

 

Kwa kuongezea, nyaya za coaxial bado zina mapungufu katika usambazaji wa ishara za picha kwenye mfumo wa ufuatiliaji:

 

1. Thekexial coaxialyenyewe inaathiriwa sana na mabadiliko ya hali ya hewa, na ubora wa picha unaathiriwa kwa kiwango fulani;

 

2. The kexial coaxial is thicker, and wiring is not convenient for dense monitoring applications;

 

3. Cuwezo ya kakaos generally can only transmit video signals. If the system needs to transmit control data, audio and other signals at the same time, additional wiring is required;

 

4. Cuwezo ya kakao has limited anti-interference ability and cannot be used in strong interference environment;

 

5. Amplifier ya coaxial pia ina shida ya shida katika marekebisho.

 

II Tjozi zilizounganishwa

 

Commonly used tjozi zilizounganishwa cuwezos are PAKA5 Cuwezos and PAKA5E Cuwezos, PAKA6 Cuwezos, and PAKA7 Cuwezos. The former has a thin cuwezo diameter and the latter has a thick cuwezo diameter. The models are as follows:

 

1.PAKA5Ekebo:Aina hii ya kebo imeongeza wiani wa vilima, nyenzo zenye ubora wa juu, na kiwango cha usafirishaji wa 100MHz. Inatumika kwa usafirishaji wa sauti na usafirishaji wa data na kiwango cha juu cha usambazaji wa 100Mbps. Inatumiwa haswa kwa mtandao wa 100BASE-T na 10BASE-T. Hii ni nyaya zinazotumiwa zaidi za Ethernet.

 

2.PAKA5E:

PAKA5E has low attenuation, less crosstalk, higher attenuation-to-crosstalk ratio (ACR), signal-to-noise ratio (Structural Return Loss), smaller delay error, and performance Greatly improved. The maximum transmission rate of Super PAKA5kebo is 250Mbps.

 

3. PAKA6 Cuwezo: The transmission frequency of this type of cuwezo is 1MHz~250MHz. The comprehensive attenuation crosstalk ratio (PS-ACR) of PAKA6 wiring system should have a large margin at 200MHz, which provides 2 times that of PAKA5 bandwidth. The transmission performance of PAKA6 cabling is much higher than that of the Super PAKA5 standard, and is most suituwezo for applications with a transmission rate higher than 1Gbps.

An important difference between PAKA6 and PAKA5 is that it improves the crosstalk and return loss performance. For the new generation of full-duplex high-speed network applications, excellent return loss performance is extremely important. The basic link model is cancelled in the six types of standards. The wiring standard adopts a star-shaped topology. The required wiring distance is: the length of the permanent link cannot exceed 90m, and the channel length cannot exceed 100m.

 

4. PAKA6E cuwezo: The PAKA6Ekebo is an improved version of the PAKA6Ekebo, which is also an unshielded tjozi zilizounganishwa cuwezo specified in ANSI/EIA/TIA-568B.2 and ISO PAKA6/Class E standards. Mainly used in gigabit networks. In terms of transmission frequency, it is also 200-250 MHz like PAKA6 lines, and the maximum transmission speed can also reach 1 000 Mbps, but it is greatly improved in terms of crosstalk, attenuation and signal-to-noise ratio.

 

PAKA 5 and VII cuwezo: This cuwezo is the latest tjozi zilizounganishwa in the ISO 7/F standard. It is mainly used to adapt to the application and development of 10 Gigabit Ethernet technology. But it is no longer an unshielded tjozi zilizounganishwa, but a shielded tjozi zilizounganishwa, so its transmission frequency can reach at least 500 MHz, which is more than twice that of PAKA6 and PAKA6Ekebos. Up to 10 Gbps.