PON Optical Power Meter
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Note that the measured fiber connector type, connector type does not
match the access instrument, which may damage the instrument's output optical head,
and get an incorrect measurement results.
It supports measurement of three wavelength i.e.: 1310nm upstream, 1490nm
and 1550nm downstream at the same time.
For example: threshold value of the name test 1(+3dBm,-20dBm,-30dBm),the
measurement readings of the meter are: the value for 1310nm upstream test is -10dBm,
which is 3
～
-20dBm, it means that the optical circuit is normal, so the power
value for 1310nm is displayed in green, if the power value falls within -20
～
-30dBm,
it means that the optical circuit may be wrong but is still usable, so in the testing
