This product uses a 650nm semiconductor laser as a light-emitting device and is driven by a constant current source to emit a
stable red light; it enters a single-mode or multi-mode fiber after
being connected to an optical fiber interface to realize the
function of fiber fault detection. It is an optical fiber engineering
construction and optical fiber network. An indispensable tool for
maintenance, optical device production and research.
Press REF/dB first, and then press the +REF/dB keys simultaneously
to enter the calibration mode. The λ key is to adjust the value down, a
nd the REF/dB key is to adjust the value up. Press the power button to
save the value and exit the calibration procedure.
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