AR844噪(Zao)音(Yin)计(Ji)是(Shi)噪(Zao)声(Sheng)测(Ce)量(Liang)中(Zhong)zui基(Ji)本(Ben)的(De)仪(Yi)器(Qi)。(?)声(Sheng)级(Ji)计(Ji)一(Yi)般(Ban)由(You)电(Dian)容(Rong)式(Shi)传(Chuan)声(Sheng)器(Qi)、(?)前(Qian)置(Zhi)放(Fang)大(Da)器(Qi)、(?)衰(Shuai)减(Jian)器(Qi)、(?)放(Fang)大(Da)器(Qi)、(?)频(Pin)率(Lu)计(Ji)权(Quan)网(Wang)络(Luo)以(Yi)及(Ji)有(You)效(Xiao)值(Zhi)指(Zhi)示(Shi)表(Biao)头(Tou)等(Deng)组(Zu)成(Cheng)。(?)声(Sheng)级(Ji)计(Ji)的(De)工(Gong)作(Zuo)原(Yuan)理(Li)是(Shi)：(?)由(You)传(Chuan)声(Sheng)器(Qi)将(Jiang)声(Sheng)音(Yin)转(Zhuan)换(Huan)成(Cheng)电(Dian)信(Xin)号(Hao)，(?)再(Zai)由(You)前(Qian)置(Zhi)放(Fang)大(Da)器(Qi)变(Bian)换(Huan)阻(Zu)抗(Kang)，(?)使(Shi)传(Chuan)声(Sheng)器(Qi)与(Yu)衰(Shuai)减(Jian)器(Qi)匹(Pi)配(Pei)。(?)放(Fang)大(Da)器(Qi)将(Jiang)输(Shu)出(Chu)信(Xin)号(Hao)加(Jia)到(Dao)计(Ji)权(Quan)网(Wang)络(Luo)，(?)对(Dui)信(Xin)号(Hao)进(Jin)行(Xing)频(Pin)率(Lu)计(Ji)权(Quan)(或(Huo)外(Wai)接(Jie)滤(Lu)波(Bo)器(Qi))，(?)然(Ran)后(Hou)再(Zai)经(Jing)衰(Shuai)减(Jian)器(Qi)及(Ji)放(Fang)大(Da)器(Qi)将(Jiang)信(Xin)号(Hao)放(Fang)大(Da)到(Dao)一(Yi)定(Ding)的(De)幅(Fu)值(Zhi)，(?)zui后(Hou)经(Jing)过(Guo)数(Shu)字(Zi)电(Dian)路(Lu)处(Chu)理(Li)器(Qi)处(Chu)理(Li)后(Hou)，(?)在(Zai)LCD上(Shang)显(Xian)示(Shi)相(Xiang)应(Ying)的(De)数(Shu)值(Zhi)。(?)
技(Ji)术(Shu)参(Can)数(Shu) |
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传(Chuan)感(Gan)器(Qi) | 1/2英(Ying)寸(Cun)电(Dian)容(Rong)式(Shi)麦(Mai)克(Ke)风(Feng) |
测(Ce)量(Liang)范(Fan)围(Wei) | 30~130dB |
测(Ce)量(Liang)度(Du) | ±1.5dB |
频(Pin)率(Lu)响(Xiang)应(Ying) | 31.5HZ~8.5KHZ |
频(Pin)率(Lu)计(Ji)权(Quan) | A/C |
数(Shu)据(Ju)通(Tong)信(Xin) | USB |
数(Shu)据(Ju)分(Fen)析(Xi) | 在(Zai)线(Xian)/离(Li)线(Xian) |
数(Shu)据(Ju)存(Cun)储(Chu) | 4700笔(Bi) |
AC\DC信(Xin)号(Hao)输(Shu)出(Chu) | 有(You) |
低(Di)电(Dian)提(Ti)示(Shi) | 有(You) |
过(Guo)载(Zai)提(Ti)示(Shi) | 有(You) |
分(Fen)辨(Bian)率(Lu) | 0.1dB |
时(Shi)间(Jian)计(Ji)权(Quan) | Fast/Slow |
zui大(Da)值(Zhi)锁(Suo)定(Ding) | 有(You) |
包(Bao)装(Zhuang)规(Gui)格(Ge) |
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电(Dian)源(Yuan) | AA*4电(Dian)池(Chi)(带(Dai)外(Wai)接(Jie)电(Dian)源(Yuan)插(Cha)孔(Kong)) |
产(Chan)品(Pin)净(Jing)重(Zhong) | 300g |
产(Chan)品(Pin)尺(Chi)寸(Cun) | 183*67*30mm |
包(Bao)装(Zhuang)方(Fang)式(Shi) | 彩(Cai)盒(He)包(Bao)装(Zhuang) |
标(Biao)准(Zhun)外(Wai)箱(Xiang)容(Rong)量(Liang) | 12pcs |
标(Biao)准(Zhun)外(Wai)箱(Xiang)尺(Chi)寸(Cun) | 52.5*45.5*34cm |
标(Biao)准(Zhun)外(Wai)箱(Xiang)毛(Mao)重(Zhong) | 13kg |
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