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Audio Analyzer

Product catalog summary

Introduction
The SR1 Dual-Domain Audio Analyzer is a versatile tool for audio analysis in both analog and digital domains, offering advanced measurement capabilities at a competitive price.

Specifications

THD+N: -112 dB at 1kHz, 20kHz BW
Frequency Range: 200 kHz
Analyzer Noise: -118 dBu (20 kHz BW)
Flatness: ±0.008 dB (20 Hz to 20 kHz)
Input Crosstalk: -140 dB
Output Crosstalk: -125 dB
Jitter: <600 ps (50 Hz to 100 kHz)
Dual-channel FFT measurements

User Interface
The SR1 features an integrated computer with Windows XP embedded OS, supporting external mouse and keyboard or front-panel controls. It includes seven on-screen tabbed pages for organizing panels, graphs, and displays.

Analog and Digital Signal Generators
The SR1 includes both analog and digital signal generators. The analog generator produces standard audio waveforms with high performance, while the digital generator supports sampling rates from 24 kHz to 216 kHz.

Timebase
The SR1's sampling clocks are derived from an internal timebase with 5 ppm accuracy, with an optional atomic rubidium timebase for higher precision.

Analyzers
The SR1 includes versatile analyzers for both analog and digital signals, featuring FFT analyzers for live spectral displays and impulse response measurements.

Automation and Programming
The SR1 supports scripting and remote programming with VBScript, Jscript, or Python, and includes a complete GPIB command set and a COM interface for automation.

Digital Audio Interface Measurements
Extensive measurements for digital interface testing, including jitter analysis in both time and frequency domains.

Ordering Information

SR1 Audio Analyzer: $8400
Option 01: 80 MHz digitizer: $1500
Option 02: High-resolution display: $600

Specifications Overview
The document provides detailed specifications for the audio analyzer, including filters, tuning ranges, and accuracy levels.

Filter Specifications

Fixed elliptical filters at 2 Hz, 100 Hz, 400 Hz, 20 kHz, 40 kHz, and 80 kHz
Band-pass filter response with Hi BW ADC and Hi Res ADC options
Notch filters with tuning accuracy of ±2.5% and amplitude accuracy of ±0.2 dB

Weighting and Detector Filters
Includes A-weighted, C-Msg weighted, CCITT, and CCIR filters, with RMS, Peak, and Quasi-Peak detector responses.

FFT Analyzers
Supports frequency range from DC to 200 kHz for Hi BW ADC and DC to 0.45Fs for Hi Res ADC, with up to 32k FFT lines and 40-bit floating point processing.

Analyzer Capabilities
Includes THD, IMD, and Multitone Analyzers for comprehensive audio measurement.

Digital Audio Measurements
Measures carrier amplitude, sample rate, and jitter, with sample rate accuracy of ±5 ppm and residual jitter ≤600 ps.

General Features
Optional digitizer with 80 MHz sampling rate, various computer interfaces, power consumption under 250 W, and a one-year warranty for parts and labor.

Catalog excerpts

· Analog/digital domain measurements · -112dB THD+N (at 1kHz, 20kHz BW) · 200kHz frequency range · -118dBu analyzer noise (20 kHz BW) · ±0.008dB flatness (20 Hz to 20kHz) · -140dB input crosstalk · -125dB output crosstalk · <600ps jitter (50 Hz to 100kHz) · Dual-channel FFT measurements · SR1 ... $8400 (U.S. list) Introducing SR1 Dual-Domain Audio Analyzer — high performance audio analysis at a very affordable price. SR1 is a stand-alone instrument that delivers cutting edge performance in a wide variety of audio measurements. With a versatile high-performance generator, an array of analyzers that operate symmetrically in both the analog and digital domains, and digital audio carrier measurements at sampling rates up to 192 kHz, SR1 is the right choice for the most demanding analog and digital audio applications. User Interface SR1 uses an integrated computer running the Windows XP embedded operating system, so operation will be immediately familiar and intuitive. Depending on the application, SR1 can be operated with an external mouse and keyboard, or by using the front-panel knob, keypad and touchpad. Seven on-screen tabbed pages are available for arranging panels, graphs, and displays. Screen setups, data, and instrument configurations can be quickly saved and recalled to either the internal hard disk or to a flash drive connected to one of the two front-panel USB connectors. An optional 1024 ×768 XVGA monitor (opt. 02) provides better resolution and allows more information to be displayed. While SR1’s configuration panels offer total flexibility in setting up every detail of the analyzer, at times it is useful to SR1 Audio Analyzer Audio Analyzer SR1 . Dual-domain audio analyzer www.thinkSRS.com Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com

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Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com SR1 AudioAnalyzer get a measurement going quickly, without worrying about infrequently used parameters. That’s where QuickMeas comes in. QuickMeas gives SR1 users the ability to get up and running on many common audio measurements such as Level, SNR, Frequency Response, and Crosstalk after answering just a few simple questions about the inputs and outputs of the DUT. When the measurements are finished, the results are available in a clear, easy-to-understand report. Analog Signal Generator At the heart of SR1 is a uniquely flexible...

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Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com SR1 AudioAnalyzer jitter spectrum, and the probability distributions of the input and jitter amplitudes as well as the pulse width and pulse rate. Full color eye-diagrams can be generated allowing easy testing against user-configurable eye limits. Automation and Programming SR1 offers unprecedented flexibility for user scripting and remote programming. On-board scripts can be written in VBScript, Jscript, or Python with full access to all of the instrument’s capabilities as well as the ability to create simple user-interfaces for...

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Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com Analog signal Generator General Characteristics Amplitude range (rms) 1 ìV to 28.3V (balanced) 1 ìV to 14.1V (unbalanced) Amplitude accuracy ±0.5 % (±0.043 dB) at 1 kHz Frequency range Hi BW DAC 10 Hz to 200 kHz Hi Res DAC 10 Hz to 0.45 Fs (Fs: 128 kHz or 64 kHz fixed, 24 kHz to 216kHz adj.) Frequency accuracy ±0.0005 % (5 ppm) Frequency resolution Output configuration Balanced Ground, Balanced Float, Unbalanced Ground, Unbalanced Float, Common Mode Test Source impedance 50Ù, 150Ù , 600Ù (balanced) 25Ù, 75Ù, 600Ù (unbalanced) Max....

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Ramp Fs/N frequency range (N20) Arbitrary 256 Samples to 136k Samples FFT Chirp Equal power in each FFT bin. Log-swept sine chirp Swept-sine with log increasing frequencies Polarity 10 Hz to Fs/4 frequency range Bursts Burst waveforms All allowed waveforms Burst types Timed Digital Test Waveforms Digital Constant, Count, Rotating Bits, Staircase, J-Test Dither None, triangle and rectangular probability distribution Digital Audio Carrier Impairments Jitter Waveforms Sine, square, uniform noise, BP filtered noise, chirp Frequency range 2 Hz to 200 kHz Amplitude range 0 UI to 13 UI Normal Mode Noise...

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Hi Res ADC (Fs = 64 kHz) 1 kHz, 4Vrms –111 dB (22 kHz BW) 20Hz to 20 kHz –107 dB + 0.8 ìV (22 kHz BW) Hi BW ADC 1 kHz, 4Vrms –113 dB (22 kHz BW) 20Hz to 20 kHz –109 dB + 0.8 ìV (22 kHz BW) –102 dB + 1.5 ìV (80 kHz BW) –98 dB + 2.5 ìV (200 kHz BW) 10Hz to 100 kHz –91 dB (200 kHz BW) Digital Inputs: Amplitude accuracy ±0.001 dB (at 1 kHz) Flatness ±0.001 dB (15 Hz to 22 kHz) Residual THD +N –140 dBFS Bandwidth limiting filters Low pass filter 4th order Butterworth, adj. from Fs/40 to 0.45Fs, 20 kHz, 40 kHz and 80 kHz fixed elliptical filters per AES17. High pass filter 4th order Butterworth, @...

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Audio Analyzer

Audio Analyzer

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