PBI-2500MB модулятор фиксированного канала головная станция кабельного телевидения

{"api":"com.taobao.wireless.DescTemplate","data":{"ID":"detail_layout_547937859659","children":[{"ID":"detail_text1","children":[{"ID":"DetailTxt_Component1","key":"detail_text","params":{"data":{"text":"产品说明：\n多制式固定频道邻频调制主机\n（入网证书编号：011040100427）\n（3C证书编号：2003020815000065）\n采用中频调制，860MHz以内邻频传输，采用高可靠性中频残留边带声表面波滤波器，多种锁相方式，内置宽带放大器，带外寄生输出抑制度大于60dB，输出电平113 dBVPALD或PAL B/G或NTSC制式输出固定频道，价格性能比优良，是中型CATV前端系统的最佳选择。\n技术参数：\n固定频道\tCh1～Ch56,（47～860MHz）Z1～Z43（PAL D）Che2～E12,S1～S91(PAL B/G)\n输出电平\t113 dBV\n输出电平可调节范围\t0～-10 dB（可调整）\n图像/伴音功率比\t10 dB～20 dB连续可调\n输出阻抗\t75\n寄生输出抑制比\t60dB\n图像载频准确度\t±5KHz（VHF）；±10KHz（UHF）\n射频输出反射损耗\t12 dB（VHF带内）；10 dB（UHF带内）\n视频输入电平\t1.0Vp-p（对应于87.5%调制度）\n中频输入，输出阻抗\t75\n微分增益\t5%（调制度为87.5%）\n微分相位\t5°（调制度为87.5%）\n色度/亮度时延差T\tT45ns\n视频带内平坦度\t±2dB\n视频箝位能力\t26dB\n视频调制度范围\t0～90%连续可调\n视频信噪比（S/N）\t45dB\n2T脉冲K系数K2t\t5%\n音频输入电平\t1Vp-p（±50KHz频偏）\n音频谐波失真\t1\n音频频率响应\t±1.5dB\n音频输入阻抗\t600\n音频信噪比\t55dB\n音频预加重\t50s\n电源供电\tAC220V±10% 50Hz±2Hz 15W\n工作环境温度\t5～40\n工作环境湿度\t85%\n工作环境大气压\t86～106kpa\n体积\t483mm×320mm×45mm\n重量\t2.7kg"},"loopStyle":"sequence"},"type":"native"}],"key":"detail_container_style12","params":{"childrenStyle":"sequence"},"type":"native"},{"ID":"_SL_SeeMore","children":[{"ID":"seemore_division_title1","key":"detail_division_title","params":{"backgroundColor":"0xffffff","titleColor":"0x051b28","lineColor":"0xffffff","title":"看了又看"},"type":"native"},{"ID":"_SL_SeeMore_Component","key":"detail_iteminfo","params":{"loopStyle":"loop"},"type":"native"}],"key":"detail_container_style3","params":{"childrenStyle":"sequence"},"type":"native"},{"ID":"division_b2","key":"division","params":{"topLine":"double","bgcolor":"0xeeeeee","type":"text","title":"已经到最底了"},"type":"native"}],"key":"sys_list","params":{"shenbiJsonTfsUrl":"TB1vpyNQpXXXXX1apXX.LpbFXXX","requestMap":"{\"see_more\":true}"},"type":"native"},"ret":["SUCCESS::调用成功"],"v":"1.0"}