Fiber Instruments Sales ATLAS MINI OTDR, Руководство пользователя

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User guide
6
ATLAS MINI OTDR
2. OTDR Function Application
2.1 Setting
Under the main interface of the OTDR, press the [Parameter Settings] button to quickly enter the
Test Parameter menu:
“
Test parameter
”
Menu
2.1.1 Test Parameter

Wavelength: 1310nm, 1550nm.

Measuring range:
-AUTO mode : The device will automatically set the most appropriate parameters for the
current measurement including the measurement range and pulse width. Auto selected
values cannot be modified in this setting.
-Manual mode : The range and pulse width can both be set manually.

Pulse Width: Pulse width refers to the time width of emitting laser signal during measurement.
The wider the pulse width is, the stronger the optical power injected into the fiber, the
stronger the backscattering signal of the fiber, and the farther the OTDR can effectively detect,
but a wide pulse width will cause saturation of the initial reflection signal, resulting in larger
deadzone. Therefore, the selection of pulse width is related to the measurement of fiber
length. The longer the length is, the wider the pulse width. It can not be modified in the
automatic measurement mode, which defaults to "automatic configuration".