Sound & Vibration Analyser The SVAN 977 is the next generation of Class 1 sound & vibration instruments and is designed to meet the needs of both environmental monitoring and occupational health and safety monitoring specialists. Its exceptional hardware design also enables the measurement of ultrasound frequencies in the 40 kHz band. The SVAN 977 provides broad-band results with all standard weighting lters and also offers an incredible time-history logging capability providing broad-band results and spectra with adjustable logging steps. Audio recording can be performed simultaneously with time-history logging as either a separate wave le or as an audio events inside timehistory les. This solution enables noise source recognition and data post-processing. Manual and automatic triggering of audio recording is also available. Measurement results are recorded in three acoustic or vibration proles enabling measurements to be performed with 3 different lters (e.g. A, C, Z) and 3 different detector time constants (e.g. Fast, Slow, Impulse). Measurement data is stored on a microSD card and can be easily downloaded to a PC using SvanPC++ software over either USB or RS 232 interfaces. The powerful DSP (digital signal processor) used in the SVAN 977 instrument can simultaneously operate in meter mode and perform 1/1 or 1/3 octave real-time analysis including statistical calculations. Additional functions like FFT analysis and Rotation Speed Measurement are also available. The instrument is powered by four AA standard or rechargeable NiMH batteries (separate charger is required), from an external DC power source or USB interface. The robust and light weight design accomplishes the exceptional features of this instrument. Features Class 1 IEC 61672 sound level measurements Dedicated for: general acoustic measurements environmental noise monitoring ultrasound measurements in 40 kHz band general vibration measurements (acceleration, velocity and displacement) hand-arm vibration measurements Three parallel independent profiles 1/1 or 1/3 octave real-time analysis (option) FFT analysis (optional) Time-domain signal recording & audio events recording (option) Reverberation time measurements (option) Advanced Data Logger including spectral analysis MicroSD card providing almost unlimited logging capacity Bluetooth™ interface (version dependent) All weather microphone protection kit designed for community and airport noise monitoring (option) OLED color display with super brightness and contrast Hand held, light weight and robust case Easy to use continuous innovation

Technical Specification Sound Level Meter & Analyser /leter Mode Weighting Filters Time Constants_ Linear Operating Range Total Measurement Range_ Internal Noise Level_ Frequency Range_ _SPL, Leq, SEL, Lden, Ltm3, Ltm5, Statistics - Ln (LrL99), LMax, LMin, Lpeak Simultaneous measurement in three profiles with independent set of filters and detectors _1/1 or optional 1/3 octave real-time analysis meeting class 1 requirements of IEC 61260 FFT** analysis 1600 lines, up to 40.0 kHz band (option) Reverberation time analysis in 1/3 octave bands (RT 60 option) _Digital True RMS detector with Peak detection,...