永辉YH-9938VR半球型摄像机产品名称：YH-9938VR/9939VR/9931VR产品特点低功耗，易散热;色彩还原性好，画质清晰;技术指标MODEL型号YH-9938VRYH-9939VRYH-9931VR成像器件Pickupdevice1/4***CCD1/3***CCD像素NumberofpixelsPAL:512(H)×582(V)NTSC:512(H)×492(V)PAL:752(H)×582(V)NTSC:752(H)×492(V)信号制式SystemofsignalNTSC/PAL水平解晰度Horizontalresolution450TVLine560TVLine***低照度Miniumillumination0Lux/1.2（IRON）镜头Lens3.6mm/6mm(可选/Optional)背光补偿BacklightcompensationAuto/自动电子快门Electronicshutter1/50（1/60）~1/100,000sec白平衡WhitebalanceAuto/自动信噪比S/Nratio＞48dB＞52dB伽玛校正Gammacorrection＞0.45工作温度Operationtemperature-20℃~50℃同步方式Sync.systemInternal/内同步视频输出幅度Videooutput1.0Vp-p/75Ω所需电源PowersupplyDC12V,400mA尺寸Dimensi***(mm)93(D)×80(H)红外线波长W***elength850nm重量（公克）Weight(g)650g可视距离IRviewdistance24pcsφ5IRLED20M防水等级WaterproofRate无)