NTI / 600 000 011

NTI audio analyzer. Equipped with a built-in omnidirectional microphone. Supports an input signal S/N ratio of at least 10dB. Both positive and negative detection is possible with the built-in microphone and XLR/RCA input.

Audio Analyzer
Measurement Functions: Level RMS, Level SPL, Level LEQ, Level Relative, THD+N, vu+PPM, Polarity Test, Signal Balance Error, Frequency Sweep, Time Sweep, 1/3 Octave Spectrum, Scope Frequency, AFILS Measurement (with MiniLINK)
Level: Units: dBu, dBV, VRMS
Accuracy: ±0.5% @ 1 kHz
Flatness: ±0.1 dB
Bandwidth: 20 Hz to 20 kHz
Resolution: 3 digits (dB scale) or 4 digits (V scale)
Frequency: Range: 10 Hz to 20 kHz
Resolution: 4 digits
Accuracy: < ±0.1%
THD+N: Includes 2nd to 5th harmonic analysis
Measurement Bandwidth: 10 Hz to 20 kHz Resolution: 4 digits
Residual THD+N: Balanced < -85 dB @ -10 dBu to +20 dBu
Unbalanced < -74 dB @ 0 dBu to +14 dBu

■vu + PPM vu indicator and peak program meter
Complies with IEC 60268, DIN 45405, PPM Type I, IIa, and Nordic standards
Adjustable reference level for meter's analog/numeric peak-hold readout
■Polarity Test
Positive/negative detection via built-in microphone or XLR/RCA input. Polarity check for tweeters, midrange speakers, woofers, and cables. Supports input signal S/N ratios of at least 10 dB. Uses MR2 or MR-PRO test signals.

■Balance Error

Display Range: 0.0% to 100%

Deviation from perfect balance displayed as a percentage or *1

■Sweep

Frequency Sweep: Level measurement versus frequency

Time Sweep: Level/THD+N/Frequency measurement versus time

■1/3 Octave

Spectrum conforming to IEC1260, class II, ANSI S1.11-1976, class II 50Hz to 20kHz, RMS level 20Hz to 20kHz bar graph

■Scope: Auto trigger, auto range, auto scale

■Filter

Linear, A-weighting, C-weighting, C-message, 22Hz/60Hz/400Hz high pass, X-Curve-1, voice band pass

■Input Connector
XLR balanced, RCA unbalanced

■Impedance

40kΩ balanced, 20kΩ unbalanced

■Maximum AC Input +20dBu (7.75 VRMS) balanced, +14dBu (3.8VRMS) unbalanced.
For input levels >20dBu (balanced), an optional -20dB adapter can be used.

■Maximum DC input: ±50 VDC
■Residual noise: <12 μV, XLR input shorted
■Built-in microphone: Omnidirectional (for polarity and delay measurements only)
*Volume and sound pressure measurements require the optional (sold separately) MINI SPL.
■Monitor Output: 3.5mm (1/8 inch) jack, compatible with most headsets
■Display: Graphic LCD, 64 x 100 pixels, backlit
■Battery: 3 x AA alkaline batteries
■Operating Time: > 16 hours (typ.)
■Dimensions: 163 x 86 x 42 mm
■Weight: 300g (including batteries)
■Operating Temperature: 0° to +45°C
■Operating Humidity: 90% RH, non-condensing