音频分析仪 UPA3的详细描述：

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最佳配置。
• 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 select 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( 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 preselection 
  Display modes toal harmonic distortion THD,selective 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 tele 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 

详细介绍：  电话：010-62123258  邮箱：buy17@