VA-2230A音频分析仪
东莞市新创通用仪器有限公司
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腾讯
广东省东莞市塘厦镇花园街花园中心B座 特点
·多功能，，高速度，可遥控音频分析仪
·此仪器综合了低频信号发生器、电子电压表、失真表、频率计、直流电压表的功能于一身。中央微处理器控制意味着可靠性更高，操作更简便，将众多的功能汇集在一个小型、高速、的单元中，其价格比分立单元更具有竞争性。
·使用DSP技术，通过FFT计算获得真RMS值
·使用DDS技术的高速、高稳定度信号发生器
·宽大的LCD提供了清晰的显示
·配备GPIB接口
·为通讯应用提供了SINAD测量
·双通道输入输出可进行通道互扰、分离及LR率测量
·频率计及AC电平频率范围扩展至210KHz
·具THD的失真及谐波分析功能
·操作简便，测试功能丰富

技术指标
·Signal Genreator for Measurement
·Frequency range.........5Hz to 20.09KHz(DDS system) 20.1KHz to 110.0KHz(CR oscillator)
·Frequency setting resolution........1Hz(5Hz to 2.009KHz) 10Hz(2.01KHz to 20.09KHz) 100Hz(20.1KHz to 110.0KHz)
·Frequency accuracy........±0.005%(5Hz to 20.09KHz) ±3%(20.1Khz to 110.0KHz)
·Display digits........4-digit max.
·Spot oscillator.1.........20Hz(±0.005%)
·Spot oscillator.2..........1KHz(±0.005%)
·Spot oscillaotr.3..........20KHz(±0.005%)
·Output channels.........2CH(L,ROnly common output)
·Output impedance........600Ω±2%(unbalanced)
·Output level resolution.......0.1dB
·Output level accuracy........Ω±0.5dB of set value(-40dBv) ±0.8dB of set value(≦-40dBV) 1KHz,600Ω load
·Spot oscillator.1..........20Hz(0.001%THD+N,80KBW)
·Spot oscillator.2........1KHz(0.001%THD+N,80KBW)
·Spot oscillator.3............20KHz(0.001%THD,80KBW)
·Measurement function block
·Frequency measurement,AC level measurement(relative displaywattage display),DC level measurement,total distortion measuremetn(THD+N),harmonic distortion measuremtn(THD),harmonic analysis measurement(HD),SINAD measurement,SN measurement,ratio measruemtn(RL,LR).
·
·Measuring range......5Hz to 210KHz
·Measurement resolution...........5-digit(≧100Hz)0.01Hz(100Hz)
·Measuring accuracy..........±510^-4±1digit
·Input level range......1mV to 100Vrms
·
Measuring range....... V(mV) dBV dBm
100V 40.0dBV 42.2dBm
30V 29.5dBV 31.7dVm
10V 20.0dBV 22.2dBm
3V 9.5dBV 11.7dBm
1V 0.0dBV 2.2dBm
300mV -10.5dBV -7.8dBm
100mV -20.0dBV -17.8dBm
30mV -30.5dBV -27.8dBm
10mV -40.0dBV -37.8dBm
3mV -50.5dBV -47.8dBm
1mV -60.0dBV -57.8dBm
0.3mV -70.5dBV -67.8dBm
Measuring accuracy.............. ±2%of full-scale indication(1KHz)
Frequency response........ ±5%(20Hzto 20KHz) reference1KHz
±10%(5Hz to 110KHz)reference1KHz
±20%(5Hz to210KHz) reference1KHz
Vestigial noise............ ≦4μV(80KBW)
Response characteristics.... actual value
Relative measurement range..... 0 to±130dB
Wattage display...... Powercalculation based on AC level
measurement and virtual load(RL)
Resolution of watt display. 5digits max.
Setting range of RL.... 2 to 5000Ω

Input channel...... 1CHfor DC input
Input impedance 1MΩ
DClevel measuring ranges.. 5 ranges(100V30V3V300mV30mV)
DC level emasuring accuracy ±(0.3%fs+0.75%of measuring value)