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光功率計使用方法有哪些?
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  光功率計使用方法

  zhenduiyonghudejutiyingyong,yaoxuanzeshihedeguanggonglvji,yinggaiguanzhuyixiagedian:

大富豪棋牌苹果平台下载  1、xuanzezuiyoudetantouleixinghejiekouleixing

  2、xiaozhunjingduyunideguangxianhejietouyaoqiufanweixiangpipei。

  3、quedingdechanpinxinghaoyunideceliangfanweihexianshifenbianlvxiangyizhi。

  4、jubeizhijiecharusunhaoceliangdedbgongneng。

  zhuyishixiang

  guanggonglvdedanweishidbm,zaiguangxianshoufaqihuojiaohuanjideshuomingshuzhongyoutadefaguanghejieshouguanggonglv,tongchangfaguangxiaoyu0dbm,jieshouduannenggoujieshoudezuixiaoguanggonglvchengweilingmindu,nengjieshoudezuidaguanggonglvjianqulingmindudezhidedanweishidb(dbm-dbm=db),weidongtaifanwei,guanggonglvjianqujieshoulingmindushiyunxudeguangxianshuaihaozhi。ceshishishijidefaguanggonglvjianqushijijieshoudaodeguanggonglvdezhijiushiguangxianshuaihao(db)。duanjieshoudaodeguanggonglvzuijiazhishinengjieshoudezuidaguanggonglv-(dongtaifanwei/2),yibanbuhuizheyanghao。yumeizhongguangshoufaqiheguangmokuaidedongtaifanweibuyiyang,yiguangxianjutinenggouyunxushuaihaoduoshaoyaokanshijiqingxing。yibanlaishuoyunxudeshuaihaowei15-30dbzuoyou。

  youdeshuomingshuhuizhiyoufaguanggonglvhechuanshujulilianggecanshu,youshihuishuomingyimeigongliguangxianshuaihaoduoshaosuanchudechuanshujuli,daduoshi0.5db/km。yongzuixiaochuanshujulichuyi0.5,jiushinengjieshoudezuidaguanggonglv,ruguojieshoudeguanggonglvgaoyuzhegezhi,guangshoufaqikenenghuibeishaohuai。yongzuidachuanshujulichuyi0.5,jiushilingmindu,ruguojieshoudeguanggonglvdiyuzhegezhi,lianlukenenghuibutong。

  guangxiandelianjieyouliangzhongfangshi,yizhongshigudinglianjieyizhongshihuodonglianjie,gudinglianjiejiushirongjie,shiyongzhuanyongshebeitongguofangdian,jiangguangxianronghuashiliangduanguangxianlianjiezaiyiqi,youdianshishuaihaoxiao,quedianshicaozuofuzalinghuoxingcha。huodonglianjieshitongguolianjieqi,tongchangzaiodfshanglianjieweixian,youdianshicaozuojiandanlinghuoxinghaoquedianshishuaihaoda,yibanshuolaiyigehuodonglianjiedeshuaihaoxiangdangyuyigongliguangxian。guangxiandeshuaihaokeyizheyanggusuan:baokuogudinghehuodonglianjie,meigongliguangxianshuaihao0.5db,ruguohuodonglianjiexiangdangshao,zhegezhikeyiwei0.4db,danchunguangxianbubaokuohuodonglianjie,keyijianshaozhi0.3db,lilunzhichunguangxianwei0.2db/km;weibaoxianjidaduoshuqingkuangxiayi0.5weihao。

  guangxianceshitxyurxbixufenbieceshi,zaidanxianqingkuangxiayouyujinshiyongyixiansuoyidangranzhixuceshiyici.danxiandeshixianyuanlijushengchangongsijiangshibofenfuyong,danbenrenrenweishiyongguangxianouheqidekenengxinggenggao.

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