日本建伍VA-2230A音频分析仪特点
·多功能,高精度,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、高精度的单元中,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提供了清晰精确的显示。
·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。
日本建伍VA-2230A音频分析仪技术指标
·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)
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