ST-15D Class 1 Sound Analyzer
ST-15D Class 1 Sound Analyzer
Scarlet ST-15D integrates professional Class 1 sound level monitoring with a GPS analyzer that meets IEC and ANSI international standards. It is equipped with one-third octave band filters for detailed sound analysis. Precisely measure sound levels and detect noise sources with a single device.
Technical Specifications
ST-12D Class 1 Integrating SLM
SV 977D is a high-performance optical speed sensor designed for precise, non-contact vehicle speed measurement using advanced Doppler technology. It provides high-frequency data output with excellent accuracy and repeatability, ensuring reliable performance across various road surfaces and environmental conditions.
The sensor supports real-time data acquisition and seamless integration with CAN bus and data logging systems. With its robust construction, low latency, and high resolution, SV 977D is ideal for automotive testing, braking analysis, and vehicle dynamics evaluation.
Key Features
- Class 1 sound level analyzer compliant with IEC and ANSI international standards
- Wide measurement range (approximately 20 dB to 142 dB) for diverse noise environments
- Real-time 1/3 octave band analysis for detailed frequency breakdown of noise
- Multi-parameter measurement including Leq, Lmax, Lmin, Lpeak and statistical indices
- A, C and Z frequency weighting with F, S and I time weighting options
- Integrated GPS analyzer to tag noise data with location (latitude and longitude)
- Data logging capability with optional audio recording in WAV format
- PC-based monitoring and analysis software for real-time data visualization
- 2.6” full-colour display with intuitive interface and quick access controls
- Multiple connectivity options including USB, RS232, AC/DC outputs for easy integration
- Modular design with optional upgrades such as octave bands, FFT and dosimeter functions
Applications
Vehicle speed and performance testing
Brake testing and stopping distance analysis
Automotive research and development (R&D)
Vehicle dynamics and motion analysis
ADAS and safety system validation
Testing in varying road and weather conditions
Real-world driving data collection
Integration with CAN-based systems for diagnostics
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Fulfils standard
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Main parameters of measurement
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Measurement range
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Frequency range
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Accuracy
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Analyzer
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Optional upgrade
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Dimensions
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Display
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Display resolution
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Weight
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Power supply
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Application
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Environment
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IEC-61672-2002 Class 1
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20 dB to 142 dB Measurement Range
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10 Hz to 20 kHz Frequency Range
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Recording Function
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Modularize Design Provides 4 Sub Models
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Class 1 Sound Level Meter
Designed for accurate noise measurements in various applications
IEC Certificate
Adhere to the highest standards for testing and conformity assessment
1/3 Octave Band
Provide detailed frequency analysis for precise identification
PC-Based Monitoring
View instant noise data with free Scarlet’s software, compatible on Windows PC
GPS Analyzer
Tag location of noise measurements for detailed environment analysis
International Standards Sound Analyzer
Real-Time 1/3 Octave Band Analysis
ST-15D makes analyzing sounds easier with its 1/3 octave band feature. This tool breaks down complex noises into smaller parts, making it simpler to identify and understand different sound sources accurately.
Outdoor Kit
Built to be waterproof and featuring an anti-perching spike to prevent obstacles, this kit ensures smooth and accurate noise measurement operations.
Add-ons
Sound Calibrator
Calibrate your sound level meter periodically to ensure accurate measurements for critical assessments.
Instant Portable Printer
Print noise data on-site with our portable thermal printer, easily pair with your sound level meter.
Audio Recording
Record Sound Data and Save it into “WAVE” format
Have Questions? Get in Touch
What is the ST-15D Class 1 Sound Analyzer and how is it different from a standard SLM?
ST-15D Class 1 Sound Analyzer is an advanced acoustic measurement device that not only measures sound levels but also performs frequency analysis (1/1 & 1/3 octave bands). Unlike standard sound level meters, it helps identify exact noise sources and frequency components, making it ideal for detailed NVH and environmental studies.
What level of accuracy and standards does ST-15D comply with?
The ST-15D is a Class 1 instrument, complying with international standards such as IEC 61672 and IEC 61260, ensuring high-precision measurements suitable for legal compliance, certification, and laboratory-grade testing.
What are the key measurement capabilities of ST-15D?
The analyzer supports a wide range of parameters including:
- Leq, SEL, Lmax, Lmin, Peak levels
- A, C, Z frequency weighting
- Fast, Slow, and Impulse time weighting
- Statistical noise analysis (Ln values)
It also offers a wide measurement range (20 dB to 142 dB) and frequency range up to 20 kHz, making it suitable for diverse acoustic environments.
Does the ST-15D support advanced analysis features like octave band and FFT?
Yes, the ST-15D supports real-time 1/3 octave band analysis, allowing engineers to break down complex noise into frequency components. Optional upgrades include 1/1 octave, FFT analysis, and dosimeter functions, making it a highly flexible and modular system.
What makes ST-15D unique compared to other sound analyzers?
Key differentiators include:
- Integrated GPS for tagging noise measurements with location data
- PC-based software (ScarletSound) for real-time monitoring and reporting
- Optional audio recording (WAV format) for detailed analysis
- Modular design allowing feature upgrades based on application needs