Now the daily increase in demand for fiber optic cable, fiber optic cable is also from the previous expansion to a maximum of 2096 single core, but the more cable laying, the problems caused by the greater. The rapid development of communications, electricity, radio and television and other cutting-edge power integration, resulting in a large number of carriers merge cable providers need to maintain cable survey instrument, then how to correctly distinguish the cable has become an urgent problem to be solved. Ultimately, because the existing fiber-optic cables are very messy problem, so the correct cable to distinguish between the presence of a relatively large degree of difficulty. Field conditions: Usage: In the room, the standard SC / APC-FC / PC is connected to one end of the fiber optic jumper cable meter survey instrument output port, the other end of the cable access flanges survey instrument patch principle, confirm the connection correct, access to the headphone audio output port, turn on the power. When turned on, press the Run button cable survey instrument supply, light setting initialization until the instrument display panel LED lights flashing and remain stable, room testers and field staff on the phone, on-site staff began to tap the cable, while the room tester were observed. If the meter shows a very clear, very clear voice, percussion fiber optic cable is the goal. Supply of cable census _ 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.