Percussion tools: screwdriver, metal rods and other portable tools with hard metal effect. Percussion strength: not too big, there is a slightly larger survey instrument cable audio instructions to suppliers, too much force can cause knocking conduction. Specifications: A, wavelength range: 1550nm B, the maximum light output power port: + 4dBm C, dynamic range: 5dB / 10dB / 25dB D, the signal processing modes: a low noise / high sensitivity E, test display: Audio / Video LED Strength Indicator F, power consumption: <25VA 1. According to different transmission performance, distance, and use, the cable can be divided into user cable, telephone cable, fiber optic cable and long distance submarine cable. 2. Use the type of fiber optic cable within different can be divided into single-mode fiber optic cable and multimode fiber optic cable. 3. How much within the fiber core cable, fiber optic cable can be divided into single, dual fiber optic cable. 4. Follow the stiffener configuration of different survey instrument quality cable, fiber optic cable can be divided into the center of the reinforcing member, the reinforcing member dispersed fiber optic cable, fiber optic cable sheath and integrated reinforcement members cable outer sheath. 5. The transmission conductor, dielectric screening instrument status of various cable, fiber optic cable can be divided into metal-free, ordinary cable, integrated cable different (mainly for railway network communication lines). 6. laying in different ways, can be divided into cable conduit cable, buried cable, aerial and underwater fiber optic cable. 7. Follow the way of different structures, fiber optic cable can be divided into flat structure, Stranded cable, fiber optic cable backbone, armored fiber optic cable and high-density user. Supply cable survey instrument | Xin Hao Yuan (certified) | cable survey instrument provided by the Tianjin Xin Hao Yuan Science and Technology Development Co., Ltd. Tianjin Xin Hao Yuan Science and Technology Development Co., Ltd. (tjaic.gov.cn/shownews.asp?id=5921) is Tianjin, special instrumentation leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , and satisfy customer needs. Xin Hao Yuan in leadership with the staff warmly welcome all inquiries negotiations to create a better future Xin Hao Yuan.