MSI / 55 - terminal yakale yoyitanitsa katundu ndi nthambi mu sitolo yapakati

Chipangizo chomwe chikuwonetsedwa pa KDPV chinali choti chizitumiza zokha maoda kuchokera kunthambi kupita ku sitolo yapakati. Kuti muchite izi, kunali koyenera kuti muyambe kulowetsamo manambala azinthu zomwe adalamulidwa, kuyitanitsa nambala ya sitolo yapakati ndikutumiza deta pogwiritsa ntchito mfundo ya modemu yolumikizidwa momveka bwino. Liwiro lomwe terminal imatumiza deta ikuyenera kukhala 300 baud. Imayendetsedwa ndi maselo anayi a mercury-zinki (panthawiyo zinali zotheka), voteji ya chinthu choterocho ndi 1,35 V, ndi batire yonse ndi 5,4 V, kotero zonse zinagwiritsidwa ntchito pamagetsi a 5 V. Kusinthaku kumakupatsani mwayi wosankha mitundu itatu: CALC - chowerengera chokhazikika, OPER - mutha kuyika manambala ndi zilembo zina, ndi KUTUMA - kutumiza, koma poyamba simunapange mawu. N'zoonekeratu kuti mungathe kusunga nkhani ndi kuzitumiza, koma bwanji? Ngati titha kudziwa, wolembayo ayesa kusanthula mawuwo pulogalamu iyi, kapenanso sinthani njira yolumikizirana ndi mitundu ya digito yamalumikizidwe osaphunzira.

Chipangizo chakumbuyo chakumbuyo, mutu wamphamvu ndi chipinda cha batri chikuwoneka:

Chofunikira kwambiri - momwe mungafinyire mawu kuchokera pa terminal - wolemba adaphunzira kuchokera kwa munthu yemwe kale anali ndi terminal yomweyi. Muyenera kuyika nambala yoyambira, ndiyeno mutha kuyika zolemba. Timasuntha chosinthira ku malo a OPER, chilembo P chidzawonekera. Lowani 0406091001 (wolemba sakufotokoza chomwe ichi ndi chiyani, mwinamwake dzina la ogwiritsa ntchito) ndikusindikiza ENT. Chilembo H chikuwoneka. Lowetsani 001290 (ndipo mwina ndi mawu achinsinsi) ndikusindikiza ENT kachiwiri. Nambala 0 ikuwonekera. Mutha kuyika zolemba.

Nkhaniyi iyenera kuyamba ndi chilembo H kapena P (wolembayo analakwitsa apa, palibe chilembo P pa kiyibodi, pali F), ndiye pali manambala. Mukakanikiza fungulo la ENT, mzere wonga 0004 0451 umawonekera, pomwe ndi nkhani iliyonse yotsatira nambala yoyamba imawonjezeka ndipo yachiwiri imachepa, zomwe zikutanthauza kuti iyi ndi chiwerengero cha maselo otanganidwa ndi aulere, motsatira. Mutha kugwiritsa ntchito mabatani amivi kuti mudutse zolemba zomwe zalowetsedwa, koma wolemba sadziwa momwe angachotsere (zomwe zikutanthauza kuti kiyi ya CLR sinathandize). Sizikunenedwa mmene tingasonyezere kuchuluka kwa nkhani iliyonse.

Mukalowa m'nkhanizi, muyenera kusuntha chosinthira kupita pa SEND ndikudina batani la SND/=. Uthenga wa SEND BUSY udzawonetsedwa pa chizindikiro, ndipo kufalitsa kudzayamba:

Toni yokhala ndi ma frequency a 4,4 Hz imamveka 1200 s. Kenako kwa 6 s - 1000 Hz. Ma 2,8 otsatirawa amatha kutumiza chizindikiro chosinthidwa, ndikutsatiridwa ndi 3 s - ndikutumizanso kamvekedwe ka 1000 Hz.

Ngati muyang'anitsitsa mawonekedwe, kwenikweni, m'malo mwa 1000 Hz mumapeza 980, ndipo m'malo mwa 1200 - 1180. Wolembayo analemba fayilo ya WAV, anaika pulogalamu yomwe tatchulayi ("munthu" kwa izo. apa) ndikuyenda motere:

minimodemu -r -f msi55_bell103_3.wav -M 980 -S 1180 300

Zachitika:

### CARRIER 300 @ 1000.0 Hz ###
�H00��90+�H00��90+�H00��90+�H��3�56��+�Ʊ�3�56��+��9��+�ƴ56+�H963�5���+�
### NOCARRIER ndata=74 confidence=2.026 ampl=0.147 bps=294.55 (1.8% slow) ###

Zikuwoneka Bell 103 modulation. Ngakhale pali zambiri 1070 ndi 1270 Hz.

Kodi ma frequency pa terminal "adayandama"? Wolembayo adakonza fayilo ya WAV kuti liwiro liwonjezeke ndi 1,8%. Zinapezeka pafupifupi 1000 ndi 1200. Kukhazikitsa kwatsopano kwa pulogalamuyi:

minimodemu -r -f msi55_bell103_4.wav -M 1000 -S 1200 300 -R 8000 -8 -startbits 1 -stopbits 1

Ndipo iye anayankha:

### CARRIER 300 @ 1000.0 Hz ###
�H00��90+�H00��90+�H00��90+�H��3�56��+�Ʊ�3�56��+��9��+�ƴ56+�H963�5���+�
### NOCARRIER ndata=74 confidence=2.090 ampl=0.148 bps=299.50 (0.2% slow) ###

Muzochitika zonsezi, zotsatira zake zimakhala ndi tanthauzo, ngakhale zolakwikazo. Nambala yankhani H12345678 "inatulutsidwa" pa chizindikiro monga H��3�56�� - manambala omwe tinatha kupanga ali m'malo awo. Mphamvu yamagetsi ikhoza kukhala ndi kusefa kosakwanira, zomwe zimapangitsa kuti maziko a 50-Hz akhazikitsidwe pa siginecha. Pulogalamuyi ikuwonetsa kudalirika kotsika (chikhulupiriro=2.090), zomwe zikuwonetsa chizindikiro cholakwika. Koma tsopano zikuwonekeratu momwe terminal idatumizira deta ku kompyuta yapakati sitolo ikadalipo.

Source: www.habr.com