音频分析仪 upa3

德国罗德与施瓦茨 rohde & schwarz

• 频率范围: 10 hz - 100 khz
• 按照din ccir和ccitt标准进行噪声测量 
• 内置测量真有效值或准峰值的宽带电平表 
• 可同时测量电平和频率 
• 直流电压测量 
• 数字与模拟组合显示方式 
• 低失真和浮动输出的合成信号发生器( 选件) 
• 用开关选择的发生器输出阻抗 
• 用于测量总谐波失真选频谐波失 
• 真的全自动失真度表或者信纳比表(选件) 
• 符合din ccir iec nab jis 
• 标准的变音(wow) 和颤音 
• (flutter) 测量表以及幅值波动表(选件) 
• 频率计和相位表
• 可存储50套仪器设置的非易失存储器

• 可在平衡和非平衡模拟音频接口上测量所有基本音频参数。
• 选件众多，用户可针对应用对仪器进行*配置。
• 各种滤波器选件可满足不同音频测量的需要。
• upa3型是由upa和一个信号发生器一个失真度表共同组成的高性价比测试装置。
• upa 具备远程控制功能(iec625/ieee488)，测量速度很快，可用于在生产流水线上对音频元器件进行自动测试。

基础单元

• 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