I-modem ikhebula: inkcazelo yenkcazelo, imisebenzi, i-wiring

Abavelisi be- satellite receivers baxoxe ngokukhawuleza ukuhlaziya kwi-software yezixhobo zabo, ukulungisa iziphoso, nokuphucula ukusebenza okanye ukufaka ezinye iinkalo ezintsha.

Ukuze uhlaziye i-firmware yefowuni, kufuneka uqale uyikhuphele kwikhompyutheni yakho, uze udibanise umamukeli kwi-PC uze uqalise kwakhona inkqubo. Ikhefu ye-null-modem isetyenziselwa ukuxhuma ikhompyutheni kumkeli we-satellite. Ukuba awunayo ikhonkco enjalo, ungayithenga kwiivenkile zekhompyutheni, nangona kungekho njalo le mveliso. Kwimeko nayiphi na into, unokhetho: ukukhangela isisombululo esilungileyo okanye ukwenza ikhefu ye-null-modem ngokwakho. Inketho yokugqibela iya kuba yinto ephantsi.

Indlela yokwenza intambo ye-null-modem ye- RS-232?

Ukuveliswa kwayo sidinga ikhebula le-wire (ubude bunqunywe ngumsebenzisi) kunye nezixhumi ezimbini ze-RS 232 ("umama"). Ezi zixhumo zifumaneka kwivenkile ye-rediyo, zithandwa kakhulu, ekubeni zikhona phantse nganye ikhompyutheni njenge-COM port. Ikhefu linokubambisana . Ngenxa yale nto siyidibanisa nganye yemiva kwaye sifumane abaqhubi abane. Emva koko, kufuneka udibanise ii-connectors. Kule meko, kubalulekile ukunqanda ukuvalwa ngengozi, kuba oku kuya kubangela ukuhluleka kwezixhobo. Ikhefu le modem ye-null Uya kusebenza ngokuthe tye nge-wire length ukuya kuma-50 emitha.

Iingcebiso zokukhangela

Le ncwadana ayikho imfuneko, kodwa ihlolwe ngumsebenzi:

1. Akukhuthazwa ukuba unqumle umkhombandlela ongaphezulu kwikhonkco.

2. Ukudibanisa ukuxhamla ikhonkco kubalulekile ukukhupha ukuxhatshazwa, kuba indlu iyathinta isixhobo. Ngaphandle koko, kukho umngcipheko wokutshisa i-COM interface kwi khomputha okanye kumkeli. Olu xhumo alufunanga ukuba zonke izixhobo zisezantsi.

3. Kukhethwa ukuba isebenzise intambo ekhusekileyo, kuba isebenza kangcono.

4. Kuzo zonke izixhobo ze- signal ye-satellites , kuphela oonxibelelwano abathathu kuphela.

5. Kwezinye iifowuni ezifumanayo akukho mveliso ye-MAX232 (kucingwa ukuba iya kuba yiplani yangaphandle). Kwizixhobo ezinje, kukho iziphumo ezine kwi-COM yemvume ye-COM, kodwa kwimveliso ye-adaptha kukho enye inxibelelwano emithathu. Ngako oko, ngaphambi kokuba uxhume i-null modem cable, kufuneka ufunde amaxwebhu akho kwiinkcukacha ngokubanzi, ungadinga kuqala ukufakela i-adapter.

6. Kweminye imitha, izikhonkwane ezi-2 kunye ne-3 kwisixhakaxhaka ziyachithwa. Kule meko, udinga ikhebula elichanekileyo, kungekho ikhefu. Ukuze unqume ukuba uluphi uhlobo lwekhonkco kwi-receiver yakho, kufuneka ufunde amaxwebhu alo.

7. Inqwelomoya iyacetyiswa ukuba isebenzise imida, njengoko ixhomekeke ngakumbi kwimpembelelo. Oonxibelelwano abathengisiweyo kufuneka bazaliswe nge-silicone ukuphepha isiphaluka esifutshane.

Ukukhupha i-modem cable RS232 engekho

Kwi-COM interface, kuphela oonxibelelwano abathathu kunye nomzimba wokuxhamla kufuneka uthengiswe. Kule fayile, kufuneka usebenzise izikhonkwane ezi-2, 3 ne-5. Kwiphepha eliphambili lekhebula le-null-modem, abo baqhagamshelana nabo bathengiswa ngokulinganayo kwiintlobo zombini, kwaye ku-cross-2 kunye no-3 batshintshana.