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NTI MR-PRO Minirator Audio Signal Generator
  • NTI MR-PRO Minirator Audio Signal Generator
  • NTI MR-PRO Minirator Audio Signal Generator
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NTI MR-PRO Minirator Audio Signal Generator

Manufacturer: NTi Audio

Item #: MR-PRO   •   MFG #: 600 000 310


Our Price:$550.00

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Availability: In Stock
Item is Available for immediate shipping from our warehouse.

    California Residents:
    Cancer and Reproductive Harm -


    MR-PRO Analog Audio Generator provides a complete set of analog audio test signals for the most demanding audio professional. In addition to all MR2 features, MR-PRO adds load impedance and phantom voltage measurements, user wave files, higher performance and cable test capability. Hand-held, using battery or external DC power supply, the generator offers a complete range of capabilities for a professional.

    Set-up and Maintain Audio Systems:
    Use the Minirator to set up PA systems and monitors. Generate pink noise and optimize the frequency response of your system with the XL2 Analyzer. Confirm that all speakers have the same polarity with the polarity signal. To optimize delay speakers, generate the delay test signal, and measure the actual acoustic delay with the XL2 Analyzer.

    The Minirator signal generator and XL2 Analyzer are valuable instruments for fast troubleshooting of the audio signal path throughout the installation. The MR-PRO verifies phantom power supply of microphones, checks XLRLR cables and measures load impedance and balance.

    Verify Speech Intelligibility of Life Safety Systems:
    The Minirator MR-PRO generates the STIPA test signal for system line inputs in conjunction with speech intelligibility measurements performed by the XL2 analyzer according to IEC 60268-16.

    Impedance Testing of 70V/100V Distributed Systems:
    The MR-PRO measures the impedance and power rating of distributed speaker systems. Deviations from the expected result identify problems such as bad connections, incorrect tap connections or short circuits. Use the optional 70V/100V Protection Adapter for safe operation.

    Insulation Measurement for Building Acoustics:
    The Minirator MR-PRO generates band-limited pink noise for sound insulation, absorption, privacy and articulation index measurements. The following test signals support your applications:
    32 Hz - 16 kHz in individual octave bands
    20 Hz - 20 kHz in individual third-octave bands

    • Specifications

      • Outputs:Balanced XLR, unbalanced RCA, phantom power resistant.
      • Inputs:DC power supply, USB, XLR for cable test.
      • Signal Wave Forms: Sine, Polarity Test Signal, Delay Test Signal, White Noise (crest factor, PAR* = 3.05 (9.7 dB), Pink Noise (crest factor, PAR* = 4.5 (13.1 dB), Gated Pink Noise (1 - 9 seconds), Wave File playback (MR-PRO).
      • Wave File Format: Sampling frequency:48 kHz, Resolution: 16 Bit, Mono / Stereo, Output level: 0 dBFS = 18 dBu (sine) acc. to EBU R68.
      • Frequency Setting: Range:10 Hz to 20 kHz, Increment: in 1 digit steps, Accuracy: 0.01%.
      • Stepped Sweep Function: Frequency range: freely selectable, Increment: 1/1, 1/3, 1/6, 1/12 octave, Sweep speed: selectable 0.5 to 5 seconds.
      • Continuous Sweep (Chirp) Function:Frequency range: freely selectable, Increment: Linear / Logarithmic, Chirp speed: 1 to 99 seconds per cycle.
      • Level Setting: Units: dBu, dBV, V, dBFS, %, Increment: in 1 digit steps (e.g. 0.1 dBu).
      • Output Level Ranges: Sine, Sweep, Chirp: -80 dBu to +18 dBu, White Noise: -80 dBu to +10 dBu, Pink Noise: -80 dBu to +8 dBu, Polarity, Delay Test: -80 dBu to +16 dBu.
      • Flatness: RL . 600 Ohm: ±0.2 dB @ 10 Hz to 12 kHz -0.1 dB / +0.3 dB @ 12 kHz to 20 kHz.
      • Accuracy @ 1kHz: ±0.2 dB.
      • THD+N: 22 Hz to 22 kHz, average: -96 dB (0.0016%) @ 18 dBu, @ 1 kHz, typical: Noise floor typ. 15 V.
      • Output Impedance: 12.5 Ohm balanced, Imax = 10 mA.
      • Impedance Measurement: Method: Absolute value Z, Measurement range: 4 Ohm to 50 kOhm balanced, 2 Ohm to 25 kOhm unbalanced, @ f = 30 Hz to 10 kHz (Sine), @ Level from -20 to +18 dBu, ±10% or ±2Ohm (whatever is higher).
      • Power Calculation: Reference voltage: 25 V, 35 V, 50 V, 70.7 V, 100 V, 140 V, 200 V.
      • Phantom Voltage: Measurement range: 0 to 54 V, Accuracy: ±3 % or ±0.5 V.
      • USB Functionality: Firmware update, Mass Storage Device.
      • Flash Memory: 512 MByte for storing wave files and configurations.
      • Display: Graphical, with back light.
      • Auto-Power-Off: 10, 30, 60 minutes or OFF.
      • Batteries: 3 x AA Alkaline dry cells or rechargeable equivalents.
      • Battery Life: 0 dBu, no load, typical: 8 hours.
      • Temperature Range: 0° to 45° C (32° to 113° F).
      • Humidity: < 90% relative humidity, non-condensing.
      • Protection Rating: IP51.
      • Dimensions (LxWxH):152 x 81 x 43 mm, (incl. protective shock jacket).
      • Weight including Batteries: 310 g (11 oz.).

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