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E-mail
3327257802@qq.com
- Phone
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Address
2nd Floor, Building B, Youbao Industrial Park, No. 17 Xiangshan Road, Science City, Huangpu Development Zone, Guangzhou City
Guangzhou Sizheng Electronics Co., Ltd
3327257802@qq.com
2nd Floor, Building B, Youbao Industrial Park, No. 17 Xiangshan Road, Science City, Huangpu Development Zone, Guangzhou City
Introduction to NP-VA200A Full Duplex Voice Intercom Terminal Equipment
1: NP-VA200A is a full duplex intercom microphone, suitable for conference intercom, monitoring recording, remote *, etc.
2: Built in microphone echo cancellation module, allowing for full duplex voice intercom without the need for settings.
3: Built in KaBoni advanced digital noise cancelling microphone, capable of voice intercom within 3 meters without echo whistling.
4: The use of SIZHENG's independently developed digital AEC audio technology can comprehensively eliminate echoes.
5: Adopting intelligent digital FPGA dual core wide dynamic noise reduction algorithm, it can clearly pick up sound in complex environments.
6: The frequency response range meets the requirements of enhanced voice and audio bandwidth, and conforms to the audio bandwidth standards supported by video conferencing transmission.
7: ATDA dynamic noise level detection and adaptive bandpass filtering can effectively suppress room environment noise and system noise.
8: Can match devices with audio input/output interfaces such as DVR, IPC, DVS, NVR, PC, etc., and support intercom function.
9: It is possible to integrate the audio monitoring and recording system, IP intercom system, remote *, classroom interaction system, and other systems that need to be designed and implemented separately in the weak current system into a unified audio and video monitoring intercom system.
10: Plug and play, USB power supply, RCA Lotus audio head input and output for easy connection to various brand sound cards and DVR devices, no need to hold or face the MIC for voice communication.
11: The digital pickup distance is far, and long-distance intercom is clear and noise free, providing microphone signals closer to human voice.
12: Expansion can be achieved through cascading expansion of the product, making it suitable for larger room applications.
13: The sturdy alloy shell and double-layer metal mesh cover designed by die-casting have a delicate and elegant appearance.
14: The bottom of the product is made of anti slip silicone foam, which can reduce the impact of desktop vibration on the microphone.
15: Suitable for working in ambient temperatures ranging from -20 ℃ to 75 ℃, ensuring high-quality voice intercom performance.
16: According to the EU Environmental ROHS Directive 2002/95/EC, construction standards have been established.
17: Through the EU CE standards and the construction specifications for the synchronized audio and video recording system of the Supreme People's Procuratorate.
18: Tested according to relevant standards of the Federal Communications Commission (FCC) and corresponding system construction specifications.
NP-VA200A Full Duplex Voice Intercom Terminal Equipment Parameters
| project | Performance indicators of microphone |
| Sound pickup area | >3 meters |
| Audio transmission distance | 20 meters |
| Noise cancellation frequency response range | 10Hz ~10kHz |
| sensitivity | MV 25 dB (10.0 MV e 1 V and 1 more) |
| signal-to-noise ratio | 95dB (1米m40dB 音源 SPL) 40dB (10米m40dB 音源 SPL) 1KHz at 1 Pa |
| Speaker power | 3W |
| pointing feature | Omnidirectionality |
| Noise suppression parameters | >15dB |
| Echo suppression parameter | 180ms for echo cancellation tail sound |
| dynamic range | 104dB (1KHz at Max dB SPL) |
| Greatly withstand sound pressure | 120dB SPL (1KHz,THD 1%) |
| Zui Loud Output | 2.5Vpp/80dB sound pressure (A-weighted) |
| Output signal amplitude | 2.5Vpp/100dB sound pressure (A-weighted) |
| output impedance | 600-1000 ohms unbalanced |
| microphone | KaBoni Advanced Digital Denoising Microphone |
| signal processing circuit | Digital AEC echo cancellation technology, FPGA dual core wide dynamic noise cancellation algorithm, suppresses echo from ultra long distance sound pickup |
| protection circuit | Lightning protection, power polarity reversal protection, ESD protection |
| connection method | 4 wiring harnesses (USB power, audio input, audio output, external speaker) |
| power adapter | USB 5V adapter |
| power supply voltage | DC stabilized voltage DC 5V |
| operating current | 200mA |
| Electromagnetic Compatibility | Compliant with GB 9254-2008 |
| Reliability indicator | MTNF ≥ 80000 hours |
| ambient temperature | -20℃ ~ 75℃ |
| color | black |
| Shell material | 合金 |
| Overall dimensions | 105mm×75mm×25mm |
| weight | 245 grams |
| Place of Origin | China, Guangzhou |
| Supply situation | In stock, samples can be provided for free testing |
| meet the standard | Construction specifications for synchronous audio and video recording systems in accordance with the EU Environmental Protection ROHS Directive 2002/95/EC Passed the EU CE standards and the construction specifications for the synchronized audio and video recording system of the Supreme People's Procuratorate Tested according to relevant standards of the Federal Communications Commission (FCC) and corresponding system construction specifications |