Acoustilyzer - AL1 - Compact Acoustical Analyzer - Specification

86 878. Technical SpecificationMeasurements• Sound Pressure Level• Real Time Analyzer• Zoom FFT• Reverberation Time• Delay Time• Level RMS, Distortion THD+N• Frequency• Polarity Test• Speech Intelligibility STI-PA (optional)Sound Pressure Level • SPL, Leq, LCpeak, Lmin, Lmax in accordance with IEC 61672 • Timer for single and repeated measurements • Dynamic range (using MiniSPL): 30 - 130 dBSPLA • Filters: Flat, A, C, X-Curve-1, RLB (Broadcast Loudness) • Logging of SPL/RTA results into AL1 memory • Wideband and RTA values simultaneously availableReal Time Analyzer • 1/3 or full octave band resolution, class 0 filters • SPL, Leq and Max-Min display per bandReverberation Time • 1/1 Octave band resolution, 63 Hz - 8 kHz, based on T20 results, according to ISO3382 • 1/3 Octave band resolution with post-processing • Automatic averaging with individual result readout and storage • Source signal: Gated pink noise (from Test-CD or Minirator)Zoom FFT • Real-time Zoom FFT with 50% overlapping, 93 Bins • Frequency Range: 10 Hz - 20 kHz • Resolution: 187.5 Hz to 0.73 HzDelay Time • Propagation delay between electrical and acoustic signal input using built-in mic. Resolution < 0.1ms, max time: 1 s • Dedicated test signal: NTi Audio chirp (from Test-CD or Minirator)86 87Polarity Test • Positive / Negative detection through internal microphone or XLR RCA connector. • Checks polarity of midrange-speakers, woofers, sub-woofers and cables. • Down to 10 dB S/N ratio of input signal. • Testsignal: NTi Audio Polarity Signal (AL1 Test CD or Minirator)Electrical • Level RMS, THD+N, Frequency, Polarity • Filters: Flat, A-weighting, C-weighting, Highpass 400 Hz, Highpass 19 kHz STI-PA (Option) • Single value STI and CIS test result. Modulation indices and individual band level results accessible. Error indicator. • Fulfills the IEC 60268-16 release 2003 standard (including amplitude weighting) • TNO verified algorithmFrequency • Range 10 Hz to 20 kHz • Resolution 4 digits • Accuracy < ± 0.1 %Level • Units dBu, dBV, VRMS • Resolution 3 digits (dB-scale) or 4 digits (V-scale) • Accuracy ± 0.5 % @ 1 kHz • Bandwidth 20 Hz to 20 kHz • Flatness ± 0.1 dBTHD+N (Total Harmonic Distortion + Noise) • Bandwidth 10 Hz to 20 kHz • Resolution 3 digits (dB-scale) or 4 digits (%-scale) • Residual balanced < -85 dB @ -10 dBu to +20 dBu THD+N unbalanced < -74 dB @ 0 dBu to +14 dBuPC Interface • Internal device memory for up to 580 records • USB interface to MiniLINK PC software • Online data logging from Acoustilyzer directly to PC 88 89Input Connectors • XLR balanced, RCA unbalancedInput Impedance • 40 kOhm balanced, 20 kOhm unbalancedInput RMS ( upper measurement limit ) • balanced +20 dBu (7.75 VRMS) • unbalanced +14 dBu (3.8 VRMS) • for input levels > 20 dBu (balanced) the Adapter -20 dB is available as accessoryMax. DC Input • ± 50 VDCResidual Noise • < 12 µV, XLR-input shortedInternal Microphone (for Polarity and Delay measurement only) • Omni directionalMonitor Output • Jack 3.5 mm (1/8“), suitable for all common headsetsDisplay Graphic LCD 64 x 100 pixel, with backlightBatteries • 3x AA batteries (alkaline) • Typical battery lifetime > 16 hrsDimensions (L x W x H) • 163 x 86 x 42 mm (6.4“ x 3.38“ x 1.63“)Weight • 300 g (10.5 oz) incl. batteriesTemperature • 0° to +45° C (32° to 113° F)Humidity < 90 % R.H., non condensing