Bài viết kỹ thuật

• 

  Suy hao phản hồi quang: Vì sao giá trị đo cao hơn có thể tốt hơn

  Hướng dẫn dễ hiểu về suy hao theo chiều thuận, ánh sáng phản xạ và suy hao phản hồi quang: đọc dấu, xác định phạm vi đo và kiểm chứng tuyến cáp quang.

  First published 2026-10-18· Fundamentals· ID 14285Views 111 +6
• 

  Tán sắc quang: Vì sao đủ ánh sáng vẫn có thể xảy ra lỗi

  Normal optical power does not prove that neighboring symbols remain distinguishable in time. Check fiber type, source spectrum, supported rate and reach.

  First published 2026-10-17· Fundamentals· ID 14279Views 153 +5
• 

  LoRa and 4G Remote Control: Point Mapping and Feedback

  Learn how LoRa field acquisition and 4G wide-area backhaul work together, with point tables, interface handover, node capacity and remote control feedback.

  First published 2026-10-16· Networking & Configuration· ID 14275Views 129 +3
• 

  Cách ly điện qua cáp quang: Các giới hạn về tín hiệu, nguồn điện và mạng

  Distinguish fiber electrical isolation, equipment interference immunity and service network security, clarifying metal cable, shared power and surge boundaries.

  First published 2026-10-16· Fundamentals· ID 14265Views 178 +5
• 

  Đồng bộ SDI: Đồng hồ bit, dấu mốc khung hình và Genlock

  Separate SDI bit clock recovery, line and frame positioning, and multi-camera sync, explaining 3G mapping compatibility, genlock and frame synchronizers.

  First published 2026-10-16· Fundamentals· ID 14264Views 148 +5
• 

  Chất lượng âm thanh quang: Lấy mẫu, độ sâu bit, nhiễu và méo

  Explain digital audio optical transmission using sample rate, bit depth and bitrate, distinguishing theoretical quantization from device noise and distortion.

  First published 2026-10-16· Fundamentals· ID 14263Views 142 +7
• 

  Planning Modular TDM over IP: Cards, Channels and Capacity

  Plan modular TDM over IP from service cards, channel mapping and shared IP transport, checking slots, card versions, power, clock and total capacity.

  First published 2026-10-16· Selection Guide· ID 14254Views 119 +4
• 

  LoRa Industrial Gateways: Chirps, Airtime and Data Handover

  Learn how LoRa industrial gateways detect contacts, form messages, modulate wirelessly and hand data to systems, plus how to check airtime and node concurrency.

  First published 2026-10-16· Fundamentals· ID 14253Views 107 +4
• 

  How Fiber Carries Data: Guiding Light, Loss and Detection

  Learn how fiber optic communication works, from light sources and core-cladding to photodetection, distinguishing light guiding, power loss and pulse spreading.

  First published 2026-10-16· Fundamentals· ID 14251Views 126 +4
• 

  EPON vs GPON: Rates, Shared Bandwidth and Compatibility

  Compare EPON and GPON line rates, shared scheduling and service interworking, separating ONU electrical ports from dedicated throughput and verifying by split loss.

  First published 2026-10-16· Selection Guide· ID 14242Views 108 +6