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SX-FLT32 Telephone Line Anti-Interference Filter

产品名称：

SX-FLT32 Telephone Line Anti-Interference Filter

Product Introduction:

SX-FLT32 Telephone Line Anti-Interference Filter


The SX-FLT32 Telephone Line Anti-Interference Filter is a product specially designed for mine telephone communication systems. It suppresses common-mode interference generated by large motors, frequency converters, high-voltage cables and other equipment on long-distance telephone lines to guarantee clear voice communication quality. Adopting a passive circuit design and a standard 1U chassis, the device supports 16 or 32 signal channels. It delivers a common-mode rejection ratio (CMRR) of 100 dB with insertion loss lower than 0.5 dB, fully complying with industrial-grade environmental specifications.


  • Features
  • Specifications
  • Networking Scheme
  • Video Introduction


Converged Communication: A Communication Method in the Digital Era


Features


■   Flexible channel capacity

      A single unit supports two channel configurations: 16 channels and 32 channels, compatible with mine dispatching telephone lines of different scales.


■   Powerful Interference Rejection

      It achieves a common-mode interference rejection capability of 100 dB, efficiently filtering clutter interference induced by motors, frequency converters and high-voltage cables on lines.


■   Ultra-low speech insertion loss

      Its insertion loss is less than 0.5 dB, barely attenuating voice signals and maintaining the original transmission distance of calls.


■   Passive Design, No Power Supply Required

      No external power supply is required. It features simple wiring and installation, and operates stably and reliably for long-term use in underground machine rooms.



 

Product Features


● Insulation Resistance: >10 MΩ


● Withstand Voltage to Ground: >2 kV


● Frequency Response Range: 300 Hz–3400 Hz


● DC Impedance: Less than 25 Ω per line


● Overall Weight: 5 kg


● Overall Dimensions: 445 mm × 50 mm × 245 mm


● Operating & Storage Temperature: -20℃ ~ 85℃


● Operating & Storage Humidity: 8%–90%, non-condensing


● Environmental Requirements for Use: Indoor installation; free of strong magnetic fields, dust and corrosive gases



      

Shanghai Shenxun Sci Tech Innovation Technology Co., Ltd. successfully concluded its visit to the 18th Yulin International Coal Expo.
Shanghai Shenxun Sci Tech Innovation Technology Co., Ltd. successfully concluded its visit to the 18th Yulin International Coal Expo.
Release time:
2025-04-21
https://www.douyin.com/video/7416176618961472783
Shanghai Shenxun KTH184 and KTH193 mining telephones can both support single/double circuit line self inspection and lean manufacturing production. #Shanghai Shenxun # Mining Dispatch Machine # Mining Phone # Autonomous Chip # Dual Loop Communication V3
Shanghai Shenxun KTH184 and KTH193 mining telephones can both support single/double circuit line self inspection and lean manufacturing production. #Shanghai Shenxun # Mining Dispatch Machine # Mining Phone # Autonomous Chip # Dual Loop Communication V3
Release time:
2025-04-21
https://www.douyin.com/video/7548325055206378761
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