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Specifications
1–34
AM700 Audio Measurement Set Service Manual
Table 1–23: FFT analyzer (cont.)
Capabilities Description
Frequency related characteristics
Span (the bandwidth of the displayed data) (cont.) Input Sampling rate Width Zoom factor
AES 32 kHz 133.438
266.875
533.75
667.187
1334.38
2668.75
3335.94
6671.82
13343.8
100
50
25
20
10
5
4
2
1 (full)
Measurement Range
High Resolution Mode DC to 20 kHz
High Bandwidth Mode DC to 80 kHz
Displayed Bins
Zoomed 16
Unzoomed 428
Bin Width 0.781 Hz (min. span) to 156.3 Hz (max. span); calculated as span divided
by 512.
FFT Record Length 1024 data points
Window Parameters
Window Functions
Weighting Functions Hann
Kaiser-Bessel
Blackman-Harris
Flat-top
Uniform
Saramaki-Rajan
User-defined
Amplitude Related Characteristics
Amplitude Resolution 0.1 dB with a flat-top window
Absolute Amplitude Accuracy ±0.15 dB at 120 Hz
Full Span FFT Noise Floor
Input terminated with 600 W or less, auto range and
averaging ON.
High Resolution Mode
170 Hz to 1000 Hz <–120 dBu
1 kHz to 20 kHz <–140 dBu