VEK牌调制器 4860FM 酒店电视改造神器 四路调制器

r 有线电视4路隔频调制器，非捷变频调制器r

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r VEK 四路邻频电视调制器是节省空间的固定频道调制器系统，它由4个固定频道调制器组成，可方便地安装在标准的19英寸机柜上。r

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r 技术特点：r

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r ★体积小巧，安装方便；r

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r ★微电脑控制，图像伴音双锁相；r

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r ★中频声表面滤波器处理，残留边带优；r

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r ★高电平输出，高可靠性；r

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r ★宽范围线性电源；r

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r ★使用SMD技术，整机稳定性好。r

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r v4860FM 分组频道r

rr r r r A组48个频道r r r r r

r B组48个频道r

r r r r r r r 序号r r r 频道r r r 序号r r r 频道r r r r r A1r r r 1 3 5 Z1r r r B1r r r 2 4 Z2 Z4r r r r r A2r r r Z3 Z5 Z7 7r r r B2r r r Z6 6 8 10r r r r r A3r r r 9 11 Z8 Z10r r r B3r r r 12 Z9 Z11 Z13r r r r r A4r r r Z12 Z14 Z16 Z18r r r B4r r r Z15 Z17 Z19 Z21r r r r r A5r r r Z20 Z22 Z24 Z26r r r B5r r r Z23 Z25 Z27 Z29r r r r r A6r r r Z28 Z30 Z32 Z34r r r B6r r r Z31 Z33 Z35 Z37r r r r r A7r r r Z36 Z38 14 16r r r B7r r r 13 15 17 19r r r r r A8r r r 18 20 22 24r r r B8r r r 21 23 Z39 Z41r r r r r A9r r r Z40 Z42 25 27r r r B9r r r Z43 26 28 30r r r r r A10r r r 29 31 33 35r r r B10r r r 32 34 36 38r r r r r A11r r r 37 39 41 43r r r B11r r r 40 42 44 46r r r r r A12r r r 45 47 49 51r r r B12r r r 48 50 52 54r r r rr

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r 二、技术参数：r

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rr r r r

r 输出频率范围r

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r MHzr

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r 48—607r

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r 射频输出电平r

r r r

r dBμVr

r r r

r ≥105r

r r r r r

r 寄生输出抑制比r

r r r

r dBr

r r r

r ≥60（射频输出最大时）r

r r r r r

r 射频输出端反射损耗r

r r r

r dBr

r r r

r ≥13r

r r r r r

r 视频调制度r

r r r

r %r

r r r

r 87.5（视频输入电平1Vp-p）r

r r r r r

r 视频带内平坦度r

r r r

r dBr

r r r

r ±1.2r

r r r r r

r 微分增益r

r r r

r %r

r r r

r ≤3r

r r r r r

r 微分相位r

r r r

r °r

r r r

r ≤3r

r r r r r

r 视频信噪比r

r r r

r dBr

r r r

r ≥60r

r r r r r

r 色/亮时延差Δtr

r r r

r nsr

r r r

r |Δτ|≤45r

r r r r r

r 图像、伴音频率间距r

r r r

r KHzr

r r r

r 6500±2（PAL-D/K）；6000±2（PAL-D/I）r

r r r r r

r 图像载频准确度Δfr

r r r

r KHzr

r r r

r ≤5r

r r r r r

r 音频载波调制频偏r

r r r

r KHzr

r r r

r 50r

r r r r r

r 音频总谐波失真r

r r r

r %r

r r r

r ≤1r

r r r r r

r 音频信噪比r

r r r

r dBr

r r r

r ≥60r

r r r r r

r 音频预加重r

r r r

r μsr

r r r

r 50r

r r r r r

r 电源供电r

r r r

r Vr

r r r

r AC 90~264±10%r

r r r r r

r 环境温度r

r r r

r ℃r

r r r

r 5—50r

r r r r r

r 相对湿度r

r r r

r %r

r r r

r ≤85r

r r r r r

r 工作环境大气压r

r r r

r Kpar

r r r

r 86—106r

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r 外型尺寸/外箱尺寸r

r r r

r mmr

r r r

r 483*140*45/550*175*80r

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r 重量r

r r r

r Kgr

r r r

r 2r

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