How Long Can This OTDR Test? Huawei and Xiaomi Choose Huajun’s FU-200 and H4000 OTDRs

When Huawei and Xiaomi engineers inspect or maintain their fiber networks, precision matters. That’s why the question “How long can this OTDR test?” has become central to telecom quality standards. Huajun International Trade (Qingdao) Co., Ltd., a trusted optical test equipment manufacturer, provides the answer with its Histar FU-200 and Histar H4000 OTDRs — two professional-grade devices tailored for advanced fiber network diagnostics. 

The Histar FU-200 OTDR delivers high-precision measurements up to 80km, combining portability with intelligent performance. Featuring a 3.5-inch capacitive touchscreen, shockproof hidden optical port, and one-key smart testing, it integrates VFL visual fault location, USB data export, and automatic analysis. Its 15-hour long battery life ensures uninterrupted field operation — ideal for technicians working on Huawei or Xiaomi fiber optic lines in challenging environments. 

Meanwhile, the Histar H4000 OTDR redefines the upper range of fiber testing with up to 100km distance measurement and 26dB dynamic range. Equipped with a 4.3-inch capacitive touchscreen, 8GB memory (200,000+ curves), and 12 professional functions such as Auto/Expert OTDR, Event Map, and RJ45 line finding, it delivers laboratory-grade accuracy in a rugged, portable form. The 4000mAh battery supports 8 hours of high-brightness operation and can even act as a power bank for other devices in the field.  

Every OTDR unit is produced under the ISO 9001, 14001, and 45001 certified system at Huajun International Trade (Qingdao) Co., Ltd.’s intelligent manufacturing base. Each device undergoes 19 rigorous reliability tests, including IP68 waterproofing and temperature cycling, guaranteeing consistency trusted by global network operators. 

Whether it’s Huawei’s high-speed metropolitan networks or Xiaomi’s IoT fiber backbone, Histar OTDRs ensure precision, endurance, and global reliability.