The Alto is a 2-Channel spectrum analyzer, a Class 1 Sound Level Meter (SLM) and a 1-Channel DataLogger. Make up of an external acquisition USB 2.0 unit and PC software, the Alto can answer to most needs of all professionals in acoustics and vibration. Allowing various input types (ICP, Electrets or preamplified sensors), the Alto also includes many advanced functions (autostore, automatic sound recording, white noise generators, RT60, wave file editor, etc.).

Test the free download software for evaluation.

Spectral Analysis

Typical Time Recording

Typical Waterfalls

HARDWARE TECHNICAL DATA

• Sampling rate up to 43 kHz per channel (full audio bandwidth: 0-20 kHz)
• Anti-aliasing filter on outputs and inputs
• 2 inputs:
  • BNC connector
  • Input dynamic range: ±30mV to ±3V
  • Input range for a 50mV/Pa microphone: 29 to 126 dB [dBref: 2E-5]
  • Preamplifier for integrated sensor type such as DeltaTron^®, Isotron^®, ICP^® and Electret microphone/accelerometer
  • SNR: 85 dB
  • LED status light on each input for saturation monitoring
• 2 outputs:
  • BNC connector
  • ±1V white noise generator
  • SNR: 88 dB
  • LED status light on each output
• Power supply: 24 VDC power back included
• Dimensions (WxHxD): 77 x 217 x 274 mm (3 x 8½ x 10¾ inches)
• Weight: 1.8 kg (4 lbs)

SOFTWARE TECHNICAL DATA

• Real time broadband frequency analysis (narrow band, 1/3 oct and octave)
• Sound Level Meter function L_Aeq, L_AF or L_AS complying CEI 61672-3:2006 SLM standard
• Frequency weightings A,C,Z and time weighting F,S,I.
• Statistical analysis module for L%
• Auto logging for all parameters, (data L_AFfor L_ASspectra) from 1/8 sec to many days (depending on the PC memory)
• Automatic .wav file recording on trigger level (allowing to hear noise even).
• Real time data logging in standard .wav file.
• Complete post processing software of the .wav file for FTT, LA_eq, statistic analysis, erase function etc.

-CLASS 1 SOUND LEVEL METER (SLM)
-2-CHANNEL ANALYZER MODULE
-1-CHANNEL DATALOGGER MODULE



CLASS 1 SOUND LEVEL METER (SLM)

Class 1 Sound Level Meter (SLM) IEC-61672 compliant (Class 1) Standard SPL, LEQ and Peak measurements Fast/Slow and linear average A, C and Z frequency weighting Historic of global level results and statistics analysis Sxx and 1/3 octave spectrum Wave recording and autostore features for long period analysis (with a complete post treatment interface)

2-CHANNEL ANALYZER MODULE

2-Channel Analyzer Module Sxx, Sxy, FRF and Coherence Octave, 1/3 octave and 1/12 octave Linear, Exponential and Accept/Reject averaging types Dedicated interface for input sensor calibration Two independent white noise generators Trigger operation with a dedicated impact measurement set-up Export function of all results/graphs in text format (Excel compatible)

1-CHANNEL DATALOGGER MODULE

1-Channel Datalogger Module Real time acquisition and recording Global level historic module Average FFT, octave, 1/3 octave 1/12 octave module RT60 module with a white noise source Waterfall module Statistic module (LEQ and L1%-L99%) Signal export in standard .wav and other formats for playback and post-analysis Signal edition functions for a partial analysis of the entire recording

Products	Specifications	Price (CAD)
Click to enlarge	Alto Spectrum 2-ChAnalyzer 2 channels real time frequency analysis (narrow band, 1/3 oct and octave) Sound Level Meter function LAeq, LAF or LAS complying CEI 61672-3:2006 Autostore and statistical analysis module L% Automatic .wav file recording function on trigger level Real time data logging and post processing	$3,200
	Alto Sound Card Version All the Alto software functions* can work with your PC sound card. Try the free download ! *Except the SLM mode	$490
	Case for Alto 2-ChAnalyzer	$200