High Pass Group <10 Hz (4-pole)
22 Hz (4-pole Butterworth)
100 Hz (4-pole Butterworth)
400 Hz (4-pole Butterworth, or 10-pole elliptic if
no other filters are enabled)
User defined (4-pole max)
Weighting Filter Group None
ANSI-IEC “A” weighting, per IEC 179
IEC 468 (CCIR) Qpk
Dolby 2K (CCIR-ARM)
C-message per IEEE 743-1978
CCITT per Rec O.41
“F” weighting per 15 phon loudness contour
HI-2 Harmonic weighting
User defined (8-pole max)
Bandpass & Crosstalk Functions
Tuning Range 20 Hz to 0.47´SR
Bandpass Response 10-pole, Q=19
Accuracy (at center frequency)
Analog ±0.2 dB
Digital ±0.1 dB
Residual Noise
Analog
10 Hz to 5 kHz £0.5 µV [–124 dBu]
5 kHz to 20 kHz £1.0 µV [–118 dBu]
20 kHz to 50 kHz £2.0 µV [–112 dBu]
Digital £-150 dBFS
SMPTE (DIN) IMD Function
Test Signal Compatibility Any combination of 40 Hz to 250 Hz (LF) and
2 kHz to 0.45´SR (HF), mixed in any ratio from
1:1 to 5:1 (LF:HF)
IMD Measured Amplitude modulation products of the HF tone.
Measurement bandwidth is typically 20 Hz to
750 Hz
Measurement Range 0 to 20%
Accuracy ±0.5 dB
Residual IMD
8
Analog £0.0025% [–92 dB]
Digital £0.00003% [–130 dB] at 0 dBFS
£0.0003% [–110 dB] at –25 dBFS
FFT Analyzer
Acquisition Length 800 to 256 k samples in 11 steps
Transform Length 256 to 32768 samples in binary steps
Chapter 6: Specifications
52 Getting Started with ATS-2
8
System specification with 60 Hz/7 kHz or 250 Hz/8 kHz test signal combinations and
Vin ³ 200 mV.
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