Nta ntawm Noise Meters
① Nws tuaj yeem ntsuas lub suab nrov nrog cov waveform complex thiab tso saib nws cov hauv paus ntsiab lus square tus nqi, uas yog, ntes nws raws li txoj cai square;
②Vim tias tib neeg pob ntseg tsis tuaj yeem pom lub suab nrog lub sijhawm tsawg dua 200 milliseconds, 800 Hz teeb liab ntawm 200 ± 50 milliseconds yuav tsum tsim ib qho kev qhia zoo ib yam li 800 Hz teeb liab ntawm tib lub amplitude; Yog hais tias lub teeb liab lub sij hawm luv luv, lub 'meter' me me qhia;
③ Txhawm rau simulate qhov xwm txheej uas tib neeg lub pob ntseg mloog hauv xov tooj lossis tshaj tawm, muaj ob qhov hnyav (hnyav) tes hauj lwm rau xov tooj thiab tshaj tawm, uas tuaj yeem xaiv raws li kev xav tau. Thaum lub suab nrov uas hnyav tau hais txog qib lossis lub zog, nws yuav tsum tau cim nrog "P" raws li lub network siv, lub xov tooj yuav tsum tau cim nrog "ps", thiab tshaj tawm yuav tsum tau cim nrog "ps", xws li dBm{{0}}p, dBm0ps, thiab lwm yam;
④ Thaum nws tsis txuas nrog lub network hnyav, nws tseem tuaj yeem ntsuas lub suab nrov ntawm 20 Hz txog 20 kHz, uas tuaj yeem siv thaum lub xov tooj hluav taws xob qhib rau cov ntaub ntawv, xov tooj thiab fax.
