Windows None
None-move-to-bin-center
Hann
Hamming
Blackman-Harris (4 term, –92 dB sidelobes)
Equiripple (AP design with –160 dB sidelobes)
Flat-top
Gaussian
Rife-Vincent 4-term
Rife-Vincent 5-term
Amplitude Accuracy (Flat-top window)
Analog ±0.10 dB [±1.2%]
Digital ±0.001 dB [±0.012%]
Phase Accuracy
Analog
9
±0.5 deg, 10 Hz to 5 kHz
±1 deg, 5 kHz to 20 kHz
±2 deg, 20 kHz to 50 kHz (with performance
option)
Digital ±0.05 deg, 10 Hz to 0.45´SR
Averaging
Number of averages 1 to 4096 in binary steps
Algorithm Power-based (frequency domain)
Synchronous (time domain)
Display Modes
Time Domain Normal, Interpolate, Peak, Absolute Value
Frequency Domain Displays highest FFT bin between graph points
None-Move-to-Bin-Center Window
Frequency Range ±4% of input frequency, 7th FFT bin (low limit) to
0.45´SR (high limit)
Spurious Products £120 dB
Residual Distortion
Analog £–105 dB, SR=65 kS/s
£–90 dB, SR=262 kS/s (with performance option)
Digital £–180 dB
Analog Alias Rejection
Standard (High
Resolution) A/D typically >115 dB for signals >0.554´SR
Performance
option A/D
typically >85 dB for signals >0.540´SR
Multitone Audio Analyzer
Acquisition Length 512 to 32768 samples in binary steps
Transform Length 512 to 32768 samples in binary steps
Measurements Amplitude vs Frequency, Total Distortion vs
Frequency, Noise vs Frequency, Phase vs
Frequency, Crosstalk vs Frequency, and Masking
Curve
Frequency Resolution SR / Length [2.0 Hz with SR = 65.536 kS/s and
Length = 32768]
Chapter 6: Specifications
Getting Started with ATS-2 53
9
Both analyzer input channels must have same coupling (ac or dc) selection. Analog
accuracy is valid for any input signal amplitude ratio up to ±30 dB.
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