Improve the optical fiber cable line fault location accuracy of the method

1, correctly grasp the using methods of instrument

A, properly set the parameters of OTDR

when using OTDR test, you must first instrument parameters setting, one of the most main is A set of test wavelength and the refractive index of the fiber. Only accurately set the basic parameters of test instrument, to create conditions for the accurate test.

B, and the choice of appropriate test range profile

for different test range, OTDR test range resolution is different, in the measurement fiber obstacles, should choose is greater than the measured distance and recent test range, so as to make full use of the accuracy of the instrument itself.

C, the application of instrument amplifier function

application function of amplification of the OTDR is accurate set the cursor on the corresponding point, using the amplification function keys graphics can be amplified to 25 m /, such resolution is less than 1 m can be got more accurate test results.

2, establish a accurate and complete raw data

cable lines accurate and complete information is the basic foundation of obstacle measurement, positioning. Therefore, must pay attention to line data collecting, sorting and check the work.

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