音频电压表 voltage measurment range 10μv to 300v,unbalanced 10μv to35v balanced frequency range 10hzto 100khz 22.4hz and 300hz highpass filters ccir,ccitt other filters contained in option upa-b2 test inputs floating balanced two 3-contact female connectors switch able r/l channel,600ω/20kω unbalance rejection >110dbat 50hz unbalanced two bnc female connectors switch able r/l channel,1mω crosstalk attenution r/l >80db at 20khz detector rms-responding rectifier quasi-peak responding rectifier level indication 5digits in mv,v dbm mw or w relative indication in % or db accuracy rms(sine wave) ±1%±1digit(30hz to 20khz) inherent noise ccir,weighted(qpk) <10μv(unbalanced,600ω) <20μv(balanced,600 ω)
失真测量 (with generator option upa-b6) signal frequencyrange 30hz to 100khz display range 0 to 120db accuracy(s/n ≤60db) ±1db inherent s/n ration ±85db or <20μv dc voltage measurment 0 to ±300v test inputs see af level meter but unbalanced only accuracy ±1%±1digit frequency counter frequency measuremnt range 8hz to 250khz required input vltage >10mv (s/n ratio>20db) accuracy ±0.005%±1digit phase measurement display range 0 to 180° resolution 0.1°
选件
发生器 option upa-b6 (upa3 标配) frequency range 10hz to 100(110) khz accuracy ±0.01% outputs like test inputs of af level meter unbalance rejection >80db at 1khz (bal,vout >1) crosstalk attenuation l/r >80 db at 20khz output impedance 30ω/200ω/600ω se-lect able output voltage no load 0.1mv to 12.4v load impedancemax.load >200ω/54ma output circuit short-circuit-proof switched off incase of external feeding inherent distortion(vout>300mv) <-80 db(30hz to 20khz) frequency response(fer.to 1khz) ±0.5% (10hz to 20khz)
失真表 option upa-b8 (upa3 标配) frequency range fundamental 10hz to 100khz frequency adjustment automatic or by frequency prese-lection display modes toal harmonic distortion thd,se-lective distortion d2 to d9 sinad,level display range -120 to 0db(distortion) accuracy thd or sinad,20hz to 20khz ±1db(harmonics up to 100khz)
wow and flutter meter(option upa-b9) measurement method iec,nab,jis,2-sigma measurement range 0.003 to 5% accuracy ±10% amplitued variation meter frequency range 2 to 20khz variation level 0to 20db frequency 0.1 to 300hz accuracy ±0.25db (0 to 3db)
special filter(option upa-b2) a-filter to din iec 651 bandstop filters pilot-tone trap with 15khz lowpass filter line-frequency trap with 13khz lp(both filters can be combined with a=filter) band pass jilters standard frequencies 315hz/1/3.15/6.3/10/12.5khz additionally adjustable fixed center frequencies of 8/9/10/11/12/13/14/15/15.5/1/17/18/19/20/25khz adjustable passband frequenciesfrom 23hz to 25khz e phon band pass filter 320hz to 3.4khz band pass filter 2to 10khz lowpass filter 350hz/1.04/3.5/7/10.4/15khz
remotecontrol iec 625-1(ieee 488 )control of all instrument functions
