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有线电视选台器 |
有线电视协调器 |
调制器 |
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HM600
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VM300 |
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| 描述 |
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泰宇电子HM600调变器,为19英吋之标准机壳,最多可安装14组的调变器,并含一组电源,是最有成本效率的组合。我们根据客户的需求,在出厂前,将调变器设定到固定的频道及频率输出。台山电子提供品质卓越的产品,在UHF及VHF的频宽中提供稳定且值得信赖的功能。对于CATV、MMDS及SMATV头端业者,HM600是您最理想的选择。
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特色与优点 |
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设频输出频率自48到600MHz |
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输出频率由工厂设定 |
| ● 优异的谐波输出 |
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● 极准确性之石英控制震荡器
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| ● SAW滤波器技术 |
| ● 提供专业影像品质 |
| ● 调变器为小型可插取式模块 |
| ● 每一机壳可含14组调变器 |
| ● 每一频道对应一调变器模块 |
| ● 低消耗功率 |
| ● 内含电源供应器 |
| 前面板控制器与指示灯 |
1. AUDIO 调整声音载波调变
2. VIDEO 调整影像调变比率
3. PWR 关电源时,省电LED开
4. A/V 改变声音影像比例时,可控制声音RF载波振幅
5. CH 指示原始设定的输出频道数字
6. RF 同时调整声音与影像载波的振幅 |
| 后面版的连结 |
2. 电源输入
DC 电源输入
NC
+ 5 Vdc
+12 Vdc
Ground
1. 影像输入 从0.7 to 2.5 Vpp标准负同步影像的输入
3. 声音输入 从 0.5 Vrms 到 1.5 Vrms的声音输入
4. RF 输出 RF 过滤讯号输出到整合器(Combiner) |
| 技术规格NISC Applicable) |
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Video :
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Input Connector
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F-Type Female.
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Input Impedance
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75 Ohms.
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Nominal Input Level
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1 Vpp
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Input
Adjustment
Range
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0.75V to 1.7V input
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@ 87.5% modulation.
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Differential Gain
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± 4% @ 87.5% modulation.
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Differential Phase
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± 4° @ 87.5% modulation.
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Input Return Loss
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18 dB (min)
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Video S/N
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60 dB (min)
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Audio :
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Input Connector
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RCA Female
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Input Impedance
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10K Ohms
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Nominal Input Level
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1 Vpp
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Input
Adjustment
Range
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0.5V to 1.5V RMS
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(±25 KHz deviation)
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Signal-to-Noise Ratio
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54 dB Typical
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THD
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0.5% Typical, 1% Max @ 1KHz
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Frequency Response
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±1.0 dB, referenced to standard
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75 *s pre-emphasis, NTSC
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General :
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Operating Temperature
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0 * to 50 ℃
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Storage Temperature
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-20 * to 80 ℃
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Power Requirements
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12 Vdc @ 150 mA
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(Per channel)
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5 Vdc @ 30 mA
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Power Input Connector
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Right Angle Male
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Output channel
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Optional
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RF Output :
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Frequency Range
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48 to 600 MHz
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Output Level
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+ 37 dBmV (min)
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Output Adjustment Range
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0 to -15 dB.(adjustable)
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@ O/P level is max.
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Output Connector
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F-type, Female
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Output Impedance
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75 Ohms.
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Visual carrier Frequency
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± 10 KHz
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Tolerance
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(Standard Channels)
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Aural/Visual Carrier Ratio
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-15 dB * 1 dB
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@ 37 dBmV O/P level
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-9 to -20 dB (adjustable)
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@ 37 dBmV O/P level
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Aural Carrier
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4.5 MHz above Visual
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Spurious Outputs
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-62 dBc (max)
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@ 37 dBmV O/P level
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Spurious Outputs
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-60 dBc (max)
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(14 Channels per set)
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Output Return Loss
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12 dB (min)
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@ 37 dBmV O/P level
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Aural Inter-carrier Tolerance
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± 5 KHz
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(0℃ to + 50℃)
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Dimension :
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Case size
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445 (W) x 89 (H) x 193 (D)mm
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Module size
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26 (W) x 89 (H) x 205 (D) mm
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