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DS-2000 Frequently Asked Questions

Question number FAQ-0718

Overview of Software Applications

Software nameSummary
General-purpose FFT analysisThe basic analysis functions, such as FFT and frequency response functions, are equivalent to those of the DS9100, CF3200, and CF5200 series FFT analyzers. It operates in the range of 4 mHz to 40 kHz, with 25 to 6400 lines, real-time 8 channels at 20 kHz, time record/playback functionality, color spectrogram, and offline analysis.
Tracking analysis50 to 160,000 r/min (6.25 to 800 times), spectrum: up to 1000 lines, constant ratio/constant width, phase tracking, three-dimensional/color map, offline analysis, Campbell diagram (optional)
Real-time Octar Analysis1/1、1/3OCT

0.5 Hz to 20 kHz band display, level monitor display, level trend display, L eq /L x calculation, offline analysis

1/N Real-Time Octave AnalysisJanuary 6 to January 24 OCT (requires combination with DS-0223)

Offline analysis

Throughput Disk FunctionDirect HDD storage, up to 4GB maximum
Maximum sampling frequency depends on the number of channels
(e.g.) 8ch/20kHz, 16ch/10kHz,
Input signal, rotation signal recording,
Level monitor, time waveform monitor, time/rotation monitor,
Time marking function,
Stored in ORF format
File export functionConvert from ORF format to WAV and DADiSP format.
Sound Pressure Method Power Level MeasurementSound pressure method
Microphones 1 to 20
Compliant with ISO 3741 to 3748, 7779
Compliant with JIS Z 8732 to 8734
Microphone traverse compatible (optional)
Architectural Acoustics MeasurementCompatible with ISO140 series, JISA1416 to 1418
Sound transmission loss, spatial sound pressure level difference, reverberation room absorption rate,
Floor impact sound
Sound Quality EvaluationLoudness, sharpness, roughness, fluctuation strength,
compatible with NCI files
Acoustic intensity
(SI) map analysis
1D SI probe compatible,
calibration function
AI, RI, SP, PV spectrum display/recording
contour, color, vector map display
Three-Dimensional SI Map AnalysisThree-dimensional SI probe (Tetrahon) compatible,
calibration function,
AI, RI, SP, PV spectrum display/simultaneous recording of three-dimensional components
contour, color, vector map display, sound source exploration function
SI law power level measurementISO9614, JIS Z8736 compliant,
supports pair microphones/2 pair microphones
calibration function,
measurements using discrete method, scanning method,
power level, A-weighted power level display,
sound field index display
Time - Frequency Analysis
  • Wigner distribution: Lag window functions (rectangular, Hanning), analysis frame length of 256 points, frequency resolution 1/200.
  • Wavelet Transform: Gabor Function, 1/3 to 1/12 OCT, up to 6 octaves, processing points up to 8192, two-dimensional/three-dimensional map, cursor function.
  • Short-Time FFT
combustion analysisInput channels, up to 16ch,
rotation speed 10–25,000 r/min (more than 0.25°)
maximum collection cycle over 2800 (1°)
in-cylinder pressure data collection, calculation, high-speed monitoring function, Pi, Pmax calculation,
options: CPL/combustion noise, multi-stage combustion calculation, knocking distribution

Last updated: 2003-03-17