Na'urar da aka nuna akan KDPV an yi niyya don aika umarni ta atomatik daga reshe zuwa babban kantin sayar da kayayyaki. Don yin wannan, dole ne a fara shigar da lambobi na kayan da aka ba da umarnin a ciki, kira lambar babban kantin sayar da kuma aika bayanan ta amfani da ka'idar modem mai hade da sauti. Gudun da tashar tashar ta aika da bayanai yakamata ya zama baud 300. Ana amfani da shi da ƙwayoyin mercury-zinc guda huɗu (a lokacin yana yiwuwa), ƙarfin irin wannan sigar shine 1,35 V, kuma duka baturi shine 5,4 V, don haka komai yayi aiki daga wutar lantarki 5 V. Maɓallin yana ba ku damar zaɓar hanyoyi guda uku: CALC - kalkuleta na yau da kullun, OPER - kuna iya shigar da lambobi da sauran haruffa, da Aika - aikawa, amma da farko ba ku iya yin sauti. A fili yake cewa za ka iya ko ta yaya ajiye articles sa'an nan aika su, amma ta yaya? Idan za mu iya ganowa, marubucin zai yi ƙoƙarin nazarin sautunan , ko ma ko ta yaya daidaita tashar don nau'ikan sadarwar dijital na mai son.
Na'urar daga gefen baya, kai mai ƙarfi da sashin baturi ana iya gani:
Abu mafi mahimmanci - yadda ake matse sauti daga tashar tashar - marubucin ya koya daga mutumin da ya taɓa samun tashar tashar. Kuna buƙatar shigar da lambar farawa, sannan zaku iya shigar da labarai. Muna matsar da sauyawa zuwa matsayin OPER, harafin P zai bayyana. Shigar da 0406091001 (marubuci bai bayyana menene wannan ba, watakila sunan mai amfani) kuma danna ENT. Harafin H ya bayyana Shigar 001290 (kuma wannan ita ce kalmar sirri) kuma sake danna ENT. Lambar 0 ta bayyana. Kuna iya shigar da labarai.
Dole ne a fara labarin da harafin H ko P (marubuci ya yi kuskure a nan, babu harafin P akan madannai, akwai F), sannan akwai lambobi. Bayan danna maɓallin ENT, layi kamar 0004 0451 ya bayyana, inda tare da kowane labarin da ke gaba lambar farko ta karu kuma na biyu yana raguwa, wanda ke nufin cewa wannan shine adadin da aka mamaye da kuma kyauta, bi da bi. Kuna iya amfani da maɓallin kibiya don gungurawa cikin labaran da aka shigar, amma marubucin bai san yadda ake share su ba (wanda ke nufin maɓallin CLR bai taimaka ba). Ba a faɗi yadda ake nuna adadin kowane labarin ba.
Bayan shigar da labaran, dole ne ku matsar da sauyawa zuwa matsayin SEND kuma danna maɓallin SND/=. Za a nuna saƙon SEND BUSY akan alamar, kuma za a fara watsawa:
Sautin da ke da mitar sautunan 4,4 Hz don 1200 s. Sannan ga wani 6 s - 1000 Hz. Ana kashe s2,8 na gaba don watsa siginar da aka canza, sannan kuma wani s3 s - sake watsa sautin 1000 Hz.
Idan ka dubi bakan, a gaskiya, maimakon 1000 Hz za ka sami 980, kuma maimakon 1200 - 1180. Mawallafin ya rubuta fayil ɗin WAV, ya shigar da shirin da aka ambata a sama ("mutumin" don shi). ) da kuma gudanar da shi kamar haka:
minimodem -r -f msi55_bell103_3.wav -M 980 -S 1180 300
Ya faru:
### MAI KWANA 300 @ 1000.0 Hz ###
�H00��90+�H00��90+�H00��90+�H��3�56��+�Ʊ�3�56��+��9��+�ƴ56+�H963�5���+�
### NOCARRIER ndata=74 amincewa = 2.026 ampl=0.147 bps=294.55 (1.8% jinkiri) ###
Yana kama . Kodayake akwai gabaɗaya 1070 da 1270 Hz.
Shin mitoci a tashar tasha sun “yi iyo ya tafi”? Marubucin ya gyara fayil ɗin WAV ta yadda saurin ya ƙaru da 1,8%. Ya fito kusan 1000 da 1200. Sabon ƙaddamar da shirin:
minimodem -r -f msi55_bell103_4.wav -M 1000 -S 1200 300 -R 8000 -8 —startbits 1 —Stopbits 1
Sai ta amsa:
### MAI KWANA 300 @ 1000.0 Hz ###
�H00��90+�H00��90+�H00��90+�H��3�56��+�Ʊ�3�56��+��9��+�ƴ56+�H963�5���+�
### NOCARRIER ndata=74 amincewa = 2.090 ampl=0.148 bps=299.50 (0.2% jinkiri) ###
A cikin duka biyun, sakamakon yana ɗaukar ma'ana, duk da kurakurai. An fitar da lambar labarin H12345678 daga siginar kamar yadda H��3�56�� - lambobin da muka iya fitar suna cikin wurarensu. Wutar wutar lantarki na iya samun ƙarancin tacewa, yana haifar da ɗorewa na 50-Hz akan siginar. Shirin yana ba da rahoton ƙarancin amincewa (aminci=2.090), wanda ke nuna siginar karkatacciyar hanya. Amma yanzu aƙalla ya bayyana yadda tashar tashar ta aika bayanai zuwa kwamfutar babban kantin sayar da kayayyaki lokacin da ta wanzu.
source: www.habr.com