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. The wide range of functionalities are tailored for:
- Live Sound Solutions
- Sound Installations and Recording Studios
- Broadcast
- Environmental Noise Measurements
- Service and Repair Centers
Note: measurement mic is sold separately.
- Flexible user interface
- Wave file recording
- Voice notes
- Visual limit indication of exceeding sound levels
- Mini-SD card, 2 GB removable
- Built-in real time clock
- Built-in speaker
- Rechargeable Li-Po battery included
- Serial programmable I/O Interface (optional)
- TOSLink output (optional)
- Automated sensor detection reads electronic data sheet of measurement microphones M4260 and M2210
- Sound Level Meter
- Conforms with Standards: IEC 61672, IEC 60651, IEC 60804, ANSI S1.4, ANSI S1.43, DIN 15905-5, DIN 45645-2, SLV 2007, GB-T_4959-1995, Technical code for public address system engineering (upcoming Chinese standard) and optional DIN 45645-1. (International IEC standards are adopted as European standards and the letters IEC are replaced by EN. XL2 conforms with these EN standards.)
- Measurements
- SPL actual, Leq, Lmin, Lmax, LCpeak
- Gliding LA eq with t = 5", 10', 15' and 60'
- All measurement results are simultaneously available
- Correction value measurement wizard
- Logging all data or subsets in selectable intervals
- Recording of WAV-files (ADPCM) and voice notes
- Limit monitoring showing exceeding sound levels
- Level Resolution: 0.1 dB
- Internal noise: 1.3 µV A-Weighted
- Weighting
- Frequency weighting: A, C, Z
- Time weighting: Fast, Slow, optional: Impulse
- Real Time Analyzer
- Frequency Resolution: 1/3 octave, 1/1 octave, wide band
- Frequency Range: 6.3 Hz to 20 kHz
- Level Resolution: 0.1 dB
- Band pass filters conform IEC 61260 class 0, ANSI S1.11-2004, class 1
- Acoustic Analyzer
- FFT Analysis
- Real time FFT with LZF and Leq
- Level Resolution: 0.1 dB
- Frequency ranges: 7 Hz - 215 Hz, 58 Hz - 1.72 kHz, 484 Hz - 20.5 kHz with 142 frequency bins shown on display
- Reverberation Time RT60
- 1/1 octave bands results from 63 Hz - 8 kHz, based on T20
- 1/3 octave bands results by post processing
- Range: 10 ms - 14 seconds
- Measurement according to ISO3382 by Schroeder-method
- Test signal: Impulse source or gated pink noise generated by the
- MR-PRO, MR2 or the included NTi Audio Test CD
- Delay Time
- Propagation delay between electrical reference signal and acoustical signal using the internal microphone
- Resolution: 0.1 ms
- Range: 0 ms - 1 second (0 m - 344 m)
- Test signal: NTi Audio delay test signal generated by the MR-PRO, MR2 or the included NTi Audio Test CD
- Polarity
- Checks polarity of speakers and line signals
- Positive/Negative detection of wideband and individual 1/1 octave bands through internal microphone or XLR/RCA connector
- Test signal: NTi Audio polarity test signal generated by the MR-PRO, MR2 or the included NTi Audio Test CD
- FFT Analysis
- Audio Analyzer
- Level RMS
- True RMS detection in V, dBu and dBV
- Range XLR/RCA input: 2 µV - 25 V (-112 dBu to +30 dBu)
- Accuracy: +/- 0.5 % @ 1 kHz
- Flatness: +/- 0.1 dB
- Bandwidth: 20 Hz to 20 kHz
- Resolution: 3 digits (dB scale) or 4 digits (linear scale)
- Frequency
- Range: 9 Hz to 20 kHz
- Resolution: 6 digits
- Accuracy: < +/- 0.003%
- THD+N (Total Harmonic Distortion + Noise)
- Range: -100 dB to 0 dB (0.001% to 100%)
- Minimum level: > -90 dBu
- Bandwidth: 10 Hz to 20 kHz
- Resolution: 3 digits (dB scale), 5 digits (linear scale) or 6 digits (x1 scale)
- Residual THD+N @ XLR/RCA input: < 2 µV
- Scope Auto ranging, auto scaling
- Filter Frequency weighting: A, C, Z, Highpass 400 Hz, Highpass 19 kHz
- Level RMS
- Input / Output Interfaces
- Audio Inputs
- XLR balanced with input impedance = 200 kOhm, phantom power: +48 V switchable, automated sensor detection for M4260/M2210 microphones
- RCA unbalanced with input impedance >30 kOhm
- Built-in condenser microphone for polarity testing, delay measurements and voice note recording
- Audio Outputs
- Built-in speaker
- Headphone connector 3.5 mm Minijack Stereo
- USB Interface USB mini connector for data transfer to PC and charging of Li-Po battery
- Serial I/O Optional 1-wire interface for control of external peripherals
- TOSLINK
- 24 bit linear PCM audio signal output (optional, prepared for later firmware extension)
- Memory Mini-SD card, 2 GByte, removable, storing ASCII data, screen shots, voice notes and WAV-files
- Power Supply
- Rechargeable Li-Po battery included, type 3.7 V / 2260 mAh, typical battery lifetime > 4 hours
- Dry cell batteries type AA, 4 x 1.5 V, typical battery lifetime > 4 hours
- Linear external power supply 9 VDC (charges Li-Po battery in operation)
- Audio Inputs
- General
- Clock Real time clock with lithium backup battery
- Calibration
- Recommend calibration interval: one year
- Microphone calibration supported with external calibrator
- Calibration certificate for new instruments optional available
Measurement Functions- Sound Level Meter
- Standards IEC 61672, IEC 60651, IEC 60804, ANSI S1.4, ANSI S1.43, DIN 15905-5, DIN 45645-2, SLV 2007, GB-T_4959-1995, Technical code for public address system engineering (upcoming Chinese standard) and optional DIN 45645-1.
- Sound Level Leq, Lmin, Lmax, Lpeak, live, ...
- Frequency weighting: A, C, Z (=flat)
- Time weighting: Fast, Slow
- Recording of WAV-files (ADPCM) and voice notes
- Limit monitoring showing exceeding sound levels
- Real Time Spectrum RTA: 1/3 octave, 1/1 octave
- Acoustic Analyzer
- FFT Analysis
- Reverberation Time RT60 with impulse source or gated pink noise
- Delay Time
- Polarity
- STI-PA Speech Intelligibility (optional)
- Electrical Functions
- Level RMS, 2µV - 25V (-112 to +30 dBu)
- THD+N (Total Harmonic Distortion + Noise)
- Frequency
- Scope
Flexible User Interface
A remarkable advantage of the XL2 is the flexible user interface. The measurement screens may be personalized and only a limited subset of the comprehensive functionalities enabled for simplified operator interfaces. Advanced users may access all menus, settings and store their preferred measurement configurations. For basic users offers the XL2 Audio and Acoustic Analyzer fixed operator interfaces with specific pre-defined settings. The XL2 boots up with exactly the required measurement parameters according the pre-defined instrument configurations. This ensures accurate measurements achieved by advanced and basic users.
