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    HD-18C Round HD Pickups

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      Pointing characteristics: Omni-directional
      Indoor and outdoor: indoor installation
      Shell material: metal mesh cover
      Installation: Ceiling mounting, wall mounting, desktop mounting
      Industry applications: education recording, judicial prisons, financial
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    1、Advanced zinc alloy material "round center dot matrix surround" design, effective collection of all-round sound.

    2, EMES advanced condenser microphone, 5-80 square high-fidelity noise reduction, high sensitivity, low noise.

    3、Surface spraying "Peak Fire TE special" oxide coating, weatherproof performance, can be ceiling centered position or side wall installation.

    4, low-noise circuit wiring exquisite, industrial devices stable and reliable, fully capture the complete, clear voice sound.

    5, improved new version of the electronic white noise suppression circuit, no "hiss" electronic noise.

    6, pickup built-in lightning protection, power supply polarity reversal protection and power protection module.

    7, using New integrated systems DSP high-fidelity voice processing algorithm designed for the human voice, sufficient force, high resolution

    8, comes with installation bracket design, easy to load and unload, easy to ceiling or side wall installation.

    9, with a sharp sense of the front, built-in micro-adjustment potentiometer, to meet a variety of environmental installation

    10, ultra-long audio signal transmission technology, using RVVP2 × 1.5mm2 shielded cable transmission 1 km without distortion.

    11, -35 ℃ ~ 75 ℃ super ambient temperature work to ensure that the back end of high-quality recording effects.

    12, integrated professional pre-amplified audio processing circuit, directly drive active speakers, hard disk recorders, headphones, etc.

    13, suitable for interrogation rooms, conference rooms, visiting rooms, classrooms and other environments of synchronous recording and video engineering.

    Pickup range: 5-80 square meters (continuously adjustable)
    System platform: TI dual-core DSP high-fidelity processor
    Pointing characteristics:360 ° in all directions
    Sensitivity:-38±3dB RL=2.2KΩ Vs=1.5V ( 1KHz 0dB=1V/Pa)
    Noise reduction capacity:15-30dB(white noise)
    Sampling rate:36k/24bit
    Audio algorithm: New integrated systems DSP high-fidelity voice processing algorithm
    Pre-selected features: digital EQ, speech enhancement NIS
    Speech recognition rate:95 % (30dB noise environment)
    Distortion:≤ 0.8% @0dBv (80dB sound pressure)
    Power supply current: 35mA linear regulated power supply DC 12V
    Frequency response:15Hz ~ 20kHz (1 kHz@94dB SPL)
    Output level: 2Vp-p (1 kHz@94dB SPL)
    Operating ambient temperature:-35℃ ~ 70℃
    Electromagnetic compatibility: GB20815-2006
    Reliability index:MTNF≧100000hours
    Output impedance:600-1000 ohms unbalanced adaptive
    Protection circuit: polarity protection, misconnection protection, electrostatic protection
    Connection: red line power supply, black line common ground, white line audio positive
    Installation: self-contained pickup chassis bracket
    Dimensions: 45mm (diameter) × 20mm (height)
    Comply with the standard: in line with the standard EU CE standards, the United States FCC certification, the highest prosecution of synchronous recording system construction specifications

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