VA-2230A音頻分析儀
東莞市新創(chuàng)通用儀器有限公司
；譚玲 （女士）聯(lián)系方式；
；歐陽先生；
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騰訊
廣東省東莞市塘廈鎮(zhèn)花園街花園中心B座 特點(diǎn)
·多功能，，高速度，可遙控音頻分析儀
·此儀器綜合了低頻信號發(fā)生器、電子電壓表、失真表、頻率計(jì)、直流電壓表的功能于一身。中央微處理器控制意味著可靠性更高，操作更簡便，將眾多的功能匯集在一個小型、高速、的單元中，其價(jià)格比分立單元更具有競爭性。
·使用DSP技術(shù)，通過FFT計(jì)算獲得真RMS值
·使用DDS技術(shù)的高速、高穩(wěn)定度信號發(fā)生器
·寬大的LCD提供了清晰的顯示
·配備GPIB接口
·為通訊應(yīng)用提供了SINAD測量
·雙通道輸入輸出可進(jìn)行通道互擾、分離及LR率測量
·頻率計(jì)及AC電平頻率范圍擴(kuò)展至210KHz
·具THD的失真及諧波分析功能
·操作簡便，測試功能豐富

技術(shù)指標(biāo)
·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)