NTI XL 2 STIPA Håndholdt Audio og Akustisk Analyzer

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NTI XL2 Acoustic and Audio Analyzer with STIPA


The XL2 Analyzer forms the unique combination of a state-of-the-art Sound Level Meter, a comprehensive Acoustic Analyzer as well as a powerful Audio Analyzer. A range of measurement microphones with an electronic data sheet are available to suit your requirements.

Besides being an advanced, integrating Sound Level Meter, the XL2 measures RTA and FFT high-resolution spectra, RT60 Reverberation Time, Polarity, Delay and THD+N. Optional features are speech intelligibility STIPA, extended acoustics functions, noise curves, cinema calibration, pass/fail analysis and remote measurement acquisition. The Type Approval Option upgrades the instrument to the XL2-TA, a type approved sound level meter.

Data and audio is logged onto the SD card for transfer to your computer. XL2 stores all reports and log files in easy-to-use comma delimited format, thus no software is required to access measurement data. Furthermore a series of free Excel application templates provide a quick data overview for specific tasks and create a simple report. The optional XL2 Data Explorer software offers comprehensive analysis tools for logged noise monitoring data.
 

Speech Intelligibility STIPA


The XL2 Analyzer measures the speech intelligibility according to the latest revision of standard IEC 60268-16:2011 (edition 4) and older editions. It offers ambient noise correction and automated averaging for repeated measurements. The XL2 displays the measurement results as STI or as CIS results, accompanied by the individual levels and modulation indices of the seven octave bands.

The measurement results are acquired from the dedicated STIPA test signal source:

  • NTi Audio TalkBox
    Acoustic signal generator, required for audio systems with voice microphones, thus measuring the complete signal chain.
  • Minirator MR-PRO
    Test signal generator, required for audio systems with line inputs
  • STIPA Test CD
    (included)

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  • Sættet leveres i kuffert med Lyd generator, analyser og målemikrofon.
  • Prisen er inklusiv kalibrering af alle 3 enheder.

Specifikationer:

Varenr.: NTI-XL2STIPA
Sound Level Meter
  • Standards IEC 61672, IEC 60651, IEC 60804, ANSI S1.4, ANSI S1.43

  • Sound levels
    • SPL actual, Lmin, Lmax, Lpeak, Leq, gliding Leq
    • Frequency weighting: A, C, Z (=flat) simultaneously
    • Time weighting: Fast, slow and optional impulse simultaneously
    • Correction values k1, k2
    • Limit monitoring showing exceeding sound levels
    • Digital I/O interface for the control of external peripherals
    • Sound Exposure Level LAE (optional)
    • Percentile statistics LAF: 1%, 5%, 10%, 50%, 90%, 95%, 99% (optional)
    • Calculated levels: LCeq - LAeq, LAIeq - LAeq, LAFT5eq -LAeq (optional)
    • Clock-impulse maximum level "TaktMax" according DIN 45645-1 (optional)
  • Spectrum Analyzer
    • 1/3 octave, 1/1 octave
    • Frequency weighting: A, C, Z (=flat)
    • Time weighting: Fast, slow and optional impulse
    • Percentile statistics for Lxy (x= A, C or Z, y= F or S): 1%, 5%, 10%, 50%, 90%, 95%, 99% (optional)
  • Logging to SD Card
    • All levels simultaneously
    • Short-time levels including spectrum for 1 second or longer
    • Wav-file for listening (compressed)
    • Data logging in 100 ms intervals (optional)
    • Linear wav-files with 24 bit, 48 kHz resolution (optional)
  • Remote measurement acquisition (optional)

Acoustic Analyzer
  • FFT Analysis
  • RT60 Reverberation Time
  • Polarity
  • Delay
  • Pass/Fail Measurements (optional)

STIPA Analyzer (optional)
  • Speech Intelligibility Measurement 
    IEC60268-16 (edition 4.0, 3.0 and 2.0), ISO 7240-16, ISO 7240-19, DIN VDE 0828-1, DIN VDE 0833-4
  • Ambient Noise Correction
  • Automated Averaging
  • Modulation Indices

Audio Analyzer
  • Level RMS
  • THD+N
  • Frequency
  • Scope