同轴电缆是一种外面包着绝缘(不导电)材料外壳的电缆。阅读下文学会连接接收器和电视的同轴电缆。
步骤
方法 1 的 3:
开始的步骤
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1
选择电缆型号。电缆这个术语可能让人有点困惑。查看电缆的外壳,上面一般有关于电缆幸好的说明。在家庭中,最常用的尺寸是RG-6和RG-59的。
- RG代表“无线电指南”。数字代表电线的直径和内径(59意味着0.059,6代表0.06)这也包括外壳和电缆的薄度,其代表单位长度损失多少信号。
- 你还会在电缆上看到RF字样,这代表“无线电频率”。
- 尽管更细低标准的RG-59仍然在某些旧房子里使用,大多数非工业同轴电缆以RG-6最出名。商业安装者会使用更细的RG电缆,比如RG-11(它只适用于信号源与你家的终端距离超过200英尺时)。
- 家庭使用的用于普通用途的RG电缆应该为75ohm (RG-6 或 RG-59)。
- 注意所有的电缆(还有其连接器)都有不同的质量。选择质量最好的。
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2
选择正确的连接器。大多数家用视频安装连接器都是用F型连接器制作的。然而,你的系统也可能用的是N型的连接器。
- 注意有几种F型的RG-6电缆可供使用, 首选螺口卷曲的连接器。
- 螺口连接器很容易使用,但是安全性更低,而且会留下一些小空气口。有些人觉得这样会影响信号质量。
- 卷曲形式的连接器有两个部分:一个圆环(或是一个卷曲器)和一个终端。它们比较难以安装,但是只要正确使用,它们可以获得最长的长度和最好的连接。
- 了解要做一个连接,你需要同样型号的阴性和阳性的连接器。
- 阳性连接器有中心导线,而阴性连接器没有中心导线。确定你用的是相对的极。大多数电缆一端是阳性连接器。
- 对于很小的电缆,使用SMA (微型 A版)连接器。
方法 2 的 3:
剥开电缆
连接连接器的第一步就是准备好同轴电缆的终端。
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1
切开电缆的外皮。
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2
剥开外皮的1/2(通常是黑色的)。
- 小心不要切到外表里面的金属带。金属带可能是一些“松的”导线和包在导线外面的金属薄片。
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3
小心地把里面的金属带(第二通道)拉出外表皮。检查一下确定金属带导线都漏出来了,并且可以触摸到铜导线。
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4
从里面的核心电缆上剥下绝缘塑料(通常是白色的,但是也可能透明的)。
- 绝对不要擦坏或者刮坏中间的导线。任何导线损伤都会导致严重的信号问题。
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5
把连接器推进电缆一头,以便中间的铜线可以抽出来。
- 确保绝缘层(铝箔)被剥开了,使得连接器终端可以进入。
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6
把连接器拧到电缆一端。螺纹会嵌入外壳中,紧密贴合在一起。
方法 3 的 3:
使用卷曲式的连接器
这是连接同轴电缆连接器的另一种方法。
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1
把曲面环套在电缆一端。
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2
剥开1/4的外皮。
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3
剥开外壳,导线外皮和绝缘层,露出内部的导线。
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4
留下1/8的绝缘层。
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5
把终端放在导线一端,以便铜芯可以从洞里抽出。
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6
把卷曲型连接器推入电缆一端,以便连接器可以进入拨片盒屋外之间。
- 这可能很难做到。试着用钳子握住电缆一端,或者用一对夹子夹住。推入的时候,不要弄弯了。
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7
把环卷入到电缆外部。
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8
剥开任何松掉的导线。
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9
切掉里面中心导线连接器端的外皮。
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10
拖曳一下连接器确保它已经连上了。
小提示
- 如果你有高速网络,并超过了两台电视的速度,确保用的是高质量的RG-6型连接器。当把连接器推入电缆导线中时,要得到清晰的图像以及良好的连接,做些准备是必要的。使用在任何受欢迎的居家修缮中心都能得到的按压式连接器。当准备导线的一头时,确保不要弄弯铜芯连接器,否则会导致一些网络问题,比如连接断断续续,数据丢失。
- 你可以为某些特定直径的同轴电缆购买切线器,卷缩机和钳子。这些工具需要练习一下才能知道如何使用,你不需要用特殊的工具来做连接器。只要你小心一般的钳子也可以使用。
- 不要使用F型螺母连接器。如果是使用这种类型的廉价未经检测的连接器,电缆信号会从中“漏出”。这会导致信号从导线上漏出,并且导致屏幕上出现扭曲,竖线,横向移动的短线,或是随机出现的小白点。
警告
- 专业使用按压式的配件用在同轴电缆上,这不比卷曲式贵多少。但是这些如今已经开始替代卷曲式的了,这是由于按压式的防水密封更好,节点信号被影响更小。
- 如果你不确定如何做,到你电缆厂商的专业人士那里去。大多数人会提供给你相对便宜的价格,尤其是和电器承包商的相比。
- 确定你用的连接器是好的。要么完美,要么别做。电缆电视信号会从坏的连接器上泄漏出来,并且影响用RF(包括飞机)技术的设备。不仅如此,如果信号泄漏太多,是违反FCC(美国联邦通讯委员会)相关规定的。
你需要准备
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切线器
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RG-6电缆剥线钳
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通道锁钳
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RG6连接器
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卷缩机
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导线剥线器