Ib tug video recorder yog ib tug tsim nyog cwj pwm ntawm tej niaj hnub tsheb. Nws pab heev rau kev tsom xam ntawm qee qhov teeb meem uas yuav tshwm sim ntawm txoj kev. Daim kab xev vis dis aus tuaj yeem pab ua pov thawj tsis raug cai thaum muaj xwm txheej los yog kev pabcuam sib cav nrog tus kws tshuaj xyuas.
Ib qho ntawm qhov tseem ceeb tshaj plaws thaum xaiv DVR yog txoj kev nws yog kev sib tw. Qhov ntau txhim khu kev qha nws yog, qhov tsawg yuav hais tias tus ntaus ntawv yuav tuaj tawm lub iav ntawm ib tug tseem ceeb heev lub sij hawm ntawd. Hauv cov qauv ua pa, ob txoj kev sib tshooj siv: ntawm lub khob nqus thiab ntawm ob daim kab xev. Lub suction khob yog tsawg txhim khu kev qha, vim hais tias nrog kev hloov nyob rau hauv kub thiab humidity nws yuav yooj yim poob tawm thiab thaum lub sij hawm lub fastening tsis muaj zog txog.
Ntxiv nrog rau txoj kev mounting, koj yuav tsum them sai sai rau cov khoom kho qhov muag ntawm DVR. Nws yuav tsum muaj ib tug dav txaus saib lub, los ntawm 90 mus 140 degrees, mus ntes ob peb kab khiav nyob rau hauv pem hauv ntej ntawm lub tsheb nyob rau hauv ib zaug. Nws yog qhov tsim nyog hais tias qhov kev daws teeb meem ntawm cov yeeb yaj kiab kaw tseg tau npaum li sai tau, qhov no yog ib qho ntawm cov yam ntxwv tseem ceeb uas cuam tshuam rau daim duab zoo. Nws yog qhov zoo tshaj plaws yog rau cov ntaubntawv povthawj yuav tsum nyob rau hauv HD 1280x720 hom.
Koj kuj yuav tsum tau them sai sai rau cov kab sau cia. Nws yuav tsum tsis qis tshaj 25 fps. nyob rau nominal daws teeb meem ntawm lub ntaus ntawv. Nws yog heev yooj yim thaum lub DVR muaj ob peb ceev hom, i.e. hauv qhov chaw nres tsheb, nws tua, piv txwv, 10k / sec., thiab hauv kev txav - 25k / sec. Qhov no tuaj yeem txuag qhov chaw ntawm daim npav nco.
Lwm cov yam ntxwv ntawm DVR yog qhov ntau kawg ntawm daim npav nco tau nws tuaj yeem txhawb nqa. Tus nqi ntau dua, qhov zoo dua. Cov video hom ntawv yog tseem ceeb heev. Qhov no yog feem ntau MPEG4 los yog H.264. Qhov kawg ib tug yog preferable, txij li thaum ib kablus nyob rau hauv hom ntawv no yuav siv sij hawm li 2 lub sij hawm tsawg qhov chaw. Nyob rau hauv tas li ntawd, nws yog tsim nyog los xaiv ib tug DVR nrog ib tug loj matrix loj. Zoo HD fixtures feem ntau yog 1/2 lossis 1 / 1.8 nti.
Ib tug heev ib qho tseem ceeb cov yam ntxwv uas koj yuav tsum xyuam xim rau thaum xaiv ib DVR yog lub climatic version. Nyob rau hauv cov xwm txheej ntawm Lavxias lub caij ntuj no, nws yog qhov tsim nyog tias cov cuab yeej muaj peev xwm tiv taus qhov kub thiab txias mus rau -30, thiab qhov zoo dua poob rau -40 degrees.
Nws tseem xav tau tias daim kab xev vis dis aus muaj cov haujlwm hauv qab no ntxiv: - los ua-nyob rau hauv saib;
- tsis siv neeg pib / nres ntawm cov kaw suab yees duab thaum pib / nres lub cav;
- kho lub sij hawm, hnub;
- kaw suab.
Ntau kim qauv yuav txawm peem rau nrog ib tug GPS receiver uas yuav txiav txim rau lub coordinates ntawm lub tsheb ntawm satellite, raws li zoo raws li ib tug hmo ntuj hom nrog IR illumination. GPS tso cai rau koj saib txoj kev ntawm lub tsheb hauv daim pheem thib.
Tsuas yog cov cuab yeej uas tau xaiv zoo yuav muaj peev xwm muab cov duab vis dis aus zoo, uas tuaj yeem dhau los ua pov thawj hauv qhov xwm txheej tsis sib haum xeeb. Yog li ntawd, nws yog ib qhov zoo dua tsis tseg rau cov DVR, vim hais tias ib tug pheej yig ntaus ntawv yog cia li ib tug pointless purchase uas yuav kim heev nyob rau hauv lub neej yav tom ntej.
