Frequency Measurements
Range <10 Hz to 47% of Sample Rate
[10 Hz–23.0 kHz at 48 ks/s].
Accuracy ±0.01% of reading or 0.0001% of Sample Rate,
whichever is greater.
Resolution 0.003% of reading or 0.0001% of Sample Rate,
whichever is greater.
Phase Measurements
Measurement Ranges ±180, –90/+270, or 0/+360 degrees.
Accuracy
20
10 Hz–5 kHz ±0.5 degree.
5 kHz–20 kHz ±1 degree.
20 kHz–50 kHz ±2 degrees.
Resolution 0.01 degree.
Minimum Input 1 mV, both inputs.
SMPTE IMD Measurements
Test Signal Compatibility Any combination of 40 Hz–250 Hz (LF) and 2 kHz
to 45% of Sample Rate (HF) tones, mixed in any
ratio from 1:1 to 5:1 (LF:HF).
IMD Measured Amplitude modulation products of the HF tone.
–3dB measurement bandwidth is 10 Hz–750 Hz.
Measurement Range 0%–20%.
Accuracy ±0.5 dB.
Residual IMD
21
£0.0025%, 60 + 7 kHz or 250 + 8 kHz.
Quasi-Anechoic Acoustical Tester
With “MLS” DSP program
Signals Four pink sequences, four white sequences.
Frequency Range (Sample Rate ¸ 2000) to (Sample Rate ¸ 2).
Frequency Resolution (Max) 1.465 Hz at 48.0 ks/s.
Acquisition Length 32767 or 131071 samples.
FFT Length 32768.
Energy Time Windows half Hann,
Hann,
<240 Hz to >8 kHz,
<120 Hz to >16 kHz.
Time Windows <5%,
(per cent of data re cord to <10%,
transition from 0 to full <20%,
amplitude) <30%.
Averaging 1–4096 averages in binary steps. Averaging
algorithm is synchronous.
DSP Analysis of Analog Signals Chapter 6: Specifications
Getting Started with Your 2700 Series Instrument 73
20
Both analog analyzer input channels must have same coupling (ac or dc) selection, and both DSP analyzer
input channels must have same coupling (ac or dc) selection. Accuracy is valid for any input signal amplitude
ratio up to ±30 dB. Upper frequency range limited to 45% of Sample Rate.
21
System specification measured with the 2700 series analog generator. Valid for input levels ³200 mVrms.
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