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音頻分析儀VA-2230
產(chǎn)品型號(hào):
簡(jiǎn)介:

音頻分析儀 VA-2230:集低頻信號(hào)發(fā)生器、電子電壓表、失真表、頻率表、直流電壓表的功能于一身。使用DSP技術(shù),DDS高穩(wěn)定信號(hào)發(fā)生器,為通信應(yīng)用提供SINAD測(cè)量.22通道輸入輸出,GPIB接口.

音頻分析儀VA-2230  的詳細(xì)介紹

簡(jiǎn)單信息:
集低頻信號(hào)發(fā)生器、電子電壓表、失真表、頻率表、直流電壓表的功能于一身。使用DSP技術(shù),DDS高穩(wěn)定信號(hào)發(fā)生器,為通信應(yīng)用提供SINAD測(cè)量.22通道輸入輸出,GPIB接口.
產(chǎn)品簡(jiǎn)介
特點(diǎn)
·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(hào)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(jiǎn)便,將眾多的功能匯集在一個(gè)小型、高速、高精度的單元中,其價(jià)格比分立單元更具有競(jìng)爭(zhēng)性。
·使用DSP技術(shù),通過(guò)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(hào)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(cè)量
·雙通道輸入/輸出可進(jìn)行通道互擾、分離及L/R率測(cè)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(jiǎn)便,測(cè)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,R: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) 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 display/wattage
display),DC level measurement,total distortion measuremetn(THD+N),harmonic
distortion measuremtn(THD),harmonic analysis measurement(HD),SINAD
measurement,S/N measurement,ratio measruemtn(R/L,L/R).
·
·Measuring
range......5Hz to 210KHz
·Measurement
resolution...........5-digit(≧100Hz)/0.01Hz(<100Hz)
·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 100% 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:V,dBV,dBm
  Distortion:%,dB
   
Measuringmode.. harmonic distortion+noise(THD+N)
Residualnoise/distortion  
(100V,30V,10V,3V&1Vranges).. ≦-94dB(10Hz to 20KHz,80KBW)
  ≦-80dB(alllimits,500KBW)
  input≧1/3 offull scale
(300mV range)...... ≦-86dB(10Hzto 20KHz,80KBW)
  ≦-66dB(alllimits,500KBW)
  input≧1/3 offull scale
(100mV range)..... ≦-74dB(10Hzto 20Khz,80KBW)
  ≦-60dB(allilmits,500KBW)
  input≧1/3 offull scale
(3mV range)...... ≦-45dB(10Hzto 10KHz,20KBW)
  input+2mVrms
 
Measuringmode..... Nos.2-10 harmonic waves are detected
and
measured
Residual noise/distortion  
(100V,30V,10V,3V&1V range)... ≦-100dB(10Hzto 20Khz,80KBW)
  ≦-80dB(alllimits,500KBW)
  input≧1/3 offull scale
(300mV range)..... ≦-94dB(10Hzto 20KHz,80KBW)
  ≦-74dB(alllimits,500KBW)
  input≧1/3 offull scale
(100mV range)........ ≦-86dB(10Hzto 20KHz,80KBW)
  ≦-74dB(alllimits,500KBW)
  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(1KHz,fullscale input)
Frequency response...... ±2dB(standard:1KHz)
Display unit...... dB,%
Response characteristics... actual value
 
Input channels...... AC input:2 CHs,alternate(Balanced
and
unbalanced switchable)
Input impedace...... ACinput:10KΩ,100KΩ≦200pF
Maximum allowable input.... 150V(DC+AC peak)
Grounding...... Floatingand non-floating switchable(independently
for DC,AC and signal generator)
Averaging count..... 2,4,8,16,OFF
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
.... SH1,AH1,T8,L4,SR0,RL1,PP0,DC1,DT1,C1,C2,C3,C27
  1)Panel staus;2)Measurement value
output;3)Memorycopy(between same models);4)Memory synchronization(between
same models,same 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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