GFC-8270H數(shù)位型數(shù)字頻率計(jì)數(shù)器的詳細(xì)資料：特點(diǎn)．提供頻率、周期量測(cè)．微電腦控制．在高頻與低頻，均具高解析度．頻率范圍：0.01Hz~2.7GHz．高感度：10mVrms．1Hz檔解析度：100nHz．自我偵測(cè)診斷．可調(diào)式觸發(fā)準(zhǔn)位控制．顯示鎖定功能規(guī)格顯示8位數(shù)withHz,kHz,MHz,GHz,S,mS, S,nSandoverflowGateTimeContinuouslyvaryfrom10mSto10S,or1periodofinputdependingonwhicheverisgreater準(zhǔn)確度+(解析度+時(shí)基誤差)頻道A范圍DC耦合0.01Hz~120MHz；AC耦合30Hz~120MHz感度10mVrmstypical；50mVrmsmax耦合AC或DC,switchable濾波器Lowpass,switchableinoroutforchannelA.-3dBpointofnominally100kHz阻抗1M //40pF衰減器x20dB觸發(fā)準(zhǔn)位調(diào)整-2.5VDCto+2.5VDC解析度Themaximumresolutionforfrequencymeasurementis100nHzfor1Hzand0.1Hzfor100MHzinputrespectively,andforperiodmeasurementis10nSfor1Hzand0.1fS(f=10-15)for100MHzinputrespectively.Atleast7,6,5digitsaredisplayfor1S,100mS,10mSgatetimerespectivelyPeriodRange8nSto100Satleast7digitsdisplayedforpersecondofgatetime頻道B范圍50MHzto2.7GHz感度 50mVrms(10mVrmstypical)耦合AConly時(shí)基AgingRate1ppm,perMonth溫度5ppm23 C+5 C電源變化+0.005ppmfor+10%變化使用電源交流100V/120V/220V/240V 10%,50/60Hz附件操作手冊(cè) 1,電源線 1,測(cè)試線 2尺寸及重量230(寬) 95(高) 280(長(zhǎng))mm約2.2公斤