日本建伍VA-2230A 音頻分析儀 VA2230A--
: Kenwood(建伍)
·多功能,高精度,高速度,可遙控音頻分析儀
·此儀器綜合了低頻信號發生器、電子電壓表、失真表、頻率計、直流電壓表的功能于一身。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、高精度的單元中,其價格比分立單元更具有競爭性。
·使用DSP技術,通過FFT計算獲得真RMS值
·使用DDS技術的高速、高穩定度信號發生器
·寬大的LCD提供了清晰的顯示
·配備GPIB接口
·為通訊應用提供了SINAD測量
·雙通道輸入/輸出可進行通道互擾、分離及L/R率測量
·頻率計及AC電平頻率范圍擴展至210KHz
·具THD的失真及諧波分析功能
·操作簡便,測試功能豐富
技術指標
·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(LR:Only 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) 1KHz600Ω load
·Spot oscillator.1..........20Hz(0.001%THD+N80KBW)
·Spot oscillator.2........1KHz(0.001%THD+N80KBW)
·Spot oscillator.3............20KHz(0.001%THD80KBW)
·Measurement function block
·Frequency measurementAC level measurement(relative display/wattage display)DC level measurementtotal distortion measuremetn(THD+N)harmonic distortion measuremtn(THD)harmonic analysis measurement(HD)SINAD measurementS/N measurementratio measruemtn(R/LL/R).
·
·Measuring range......5Hz to 210KHz
·Measurement resolution...........5-digit(≧100Hz)/0.01Hz(<>
·Measuring accuracy..........±5*10^-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) reference:1KHz ±10%(5Hz to 110KHz)reference:1KHz ±20%(5Hz to210KHz) reference:1KHz | |||
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...... | 1CH:for DC input | |||
Input impedance | 1MΩ | |||
DClevel measuring ranges.. | 5 ranges(100V/30V/3V/300mV/30mV) | |||
DC level emasuring accuracy | ±(0.3%fs+0.75%of measuring value) | |||
Fundamental frequencyrange | 10Hz to 110KHz | |||
Distortionmeasurement range | 0.0dB | |||
30% | -10.5dB | |||
10% | -20.0dB | |||
3% | -30.5dB | |||
1% | -40.0dB | |||
0.3% | -50.5dB | |||
0.1% | -60.0dB | |||
0.03% | -70.5dB | |||
0.01% | -80.0dB | |||
Secondary harmonic deviation.... | ±1dB(20Hzto 20KHz) | |||
±3dB(all range) | ||||
Fundamental wave removal ratio.. | 110dBor more | |||
60dB(NOTCH)+ - 50dB(FET) | ||||
Response characteristics | ||||
(input)......... | actual value | |||
Response charateristics | ||||
(distortion).... | actualvalue | |||
Input level range..... | 1mVto 100V | |||
Input ranges..... | V(mV) | dBV | dBm | |
100V | 40.0dBV | 42.2dBm | ||
30V | 29.5dBV | 31.7dBm | ||
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 | ||
(30mV to 3mV ranges:manual only) | ||||
Display units..... | Input level:VdBVdBm | |||
Distortion:%dB | ||||
Measuringmode.. | harmonic distortion+noise(THD+N) | |||
Residualnoise/distortion | ||||
(100V30V10V3V&1Vranges).. | ≦-94dB(10Hz to 20KHz80KBW) | |||
≦-80dB(alllimits500KBW) | ||||
input≧1/3 offull scale | ||||
(300mV range)...... | ≦-86dB(10Hzto 20KHz80KBW) | |||
≦-66dB(alllimits500KBW) | ||||
input≧1/3 offull scale | ||||
(100mV range)..... | ≦-74dB(10Hzto 20Khz80KBW) | |||
≦-60dB(allilmits500KBW) | ||||
input≧1/3 offull scale | ||||
(3mV range)...... | ≦-45dB(10Hzto 10KHz20KBW) | |||
input+2mVrms | ||||
Measuringmode..... | Nos.2-10 harmonic waves are detected and measured | |||
Residual noise/distortion | ||||
(100V30V10V3V&1V range)... | ≦-100dB(10Hzto 20Khz80KBW) | |||
≦-80dB(alllimits500KBW) | ||||
input≧1/3 offull scale | ||||
(300mV range)..... | ≦-94dB(10Hzto 20KHz80KBW) | |||
≦-74dB(alllimits500KBW) | ||||
input≧1/3 offull scale | ||||
(100mV range)........ | ≦-86dB(10Hzto 20KHz80KBW) | |||
≦-74dB(alllimits500KBW) | ||||
input≧1/3 offull scale | ||||
Measuring mode..... | Nos.2-10 harmonicwaves are set to any value and measured Residual | |||
SINAD measuringrange..... | 0 to 40dB(1 range) | |||
ResidualSINAD....... | Same as | |||
Input levl...... | 30μV to 100Vrms | |||
(both S component&N component) | ||||
Measuring range...... | 0 to 130dB(80KHzBW) | |||
S/N accuracy........ | ±1.2dB | |||
Response characteristics..... | actualvalue | |||
Input level ragne..... | 30μV to 100Vrms(bothnumerator and denominator) | |||
Ratio range....... | 0to ±130dB(80KHzBW_ | |||
Ratio accuracy......... | ±1.2dB(1KHzfullscale input) | |||
Frequency response...... | ±2dB(standard:1KHz) | |||
Display unit...... | dB% | |||
Response characteristics... | actual value | |||
Input channels...... | AC input:2 CHsalternate(Balanced and unbalanced switchable) | |||
Input impedace...... | ACinput:10KΩ100KΩ≦200pF | |||
Maximum allowable input.... | 150V(DC+AC peak) | |||
Grounding...... | Floatingand non-floating switchable(independently for DCAC and signal generator) | |||
Averaging count..... | 24816OFF | |||
Built-in filters...... | HPF(100Hz/200Hz/Optional)LPF(15KHz/20KHz/80KHz/Optional)PSOPHO(IHF-A/CCIR-ARM/DIN-AUDIO/Optional) | |||
Optional filters...... | 3KHz BPF/1KHzBPF/315Hz BPF/CCITT P53TEL/C-MESSAGE/IEC-C | |||
Operation specifications... | 1)Single Up;2)Single Down; | |||
3)RepeatUp;4)Repeat Down | ||||
.... | SH1AH1T8L4SR0RL1PP0DC1DT1C1C2C3C27 | |||
1)Panel staus;2)Measurement value output;3)Memorycopy(between same models);4)Memory synchronization(between same modelssame versions) | ||||
... | 1) Levelor frequency setting from an external rotary encoder;2)Direct memory call;3)Controloutput;4)Limit judgment output;5)Memory listing;6)8-bit data read;7)Measurementdata print-out. | |||
Memory point count... | 100 steps(Can bedivided into 10 groups.) | |||
Setting contents... | 1)Panelsetting;2)EXT CONTROL I/O; | |||
3)Limitdata batch memory. | ||||
Temperature/humidity for operation.... | 0to 40℃RC 90% max. | |||
Tempearture/ humidity for characte- ristics in spec. | 6 to 35℃RC 85% max. | |||
LCD Tempearture /humidity for operation.... | 0to 30℃RC 90% max. | |||
0 to 40℃RH60%max. | ||||
Power source..... | 100/120/220/240VAC±10%(max.250V)/Approx.48W | |||
Dimensions..... | 426(W)*99(H)*440(D)mm | |||
Weight.... | Approx.10kg | |||
Accessories.... | Instruction manual(1)cable(1)powercord(1) |
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