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Joinwit JW3302SJ - Page 11

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OPM
This function is used to test the power of optical signal and insertion loss of various
devices and optoelectronic components. It can identify and measure the
frequency of 270/330/1k/2kHz frequency optical signal.
F1: Switching wavelength
F2: Setting Reference Power F3:Zero Reference Power
F4: Enter the Calibration Mode
Absolute power,relative power and linear power are converted as follows:
𝑃
!"#.
=10lg
𝑃
%&'
/1mw
𝑃
()*.
=
𝑃
!"#.
-
𝑃
()+.
VFL
Visible red light (650 nm) is injected into the optical fiber, and the position of the