Joinwit JW3213 Series User Manual page 15

will be break, and the tested value will be faulty if the un-matched adaptor
connected
Pay attention to the type of the measured optical fiber connectors, does not match the
type of access instrument, may damage the instrument output optical fiber connector,and can not
get the true result.
1310nm,upstream, 1490nm, 1550nm downstream, and 3 wavelength measurement at the same
time.
Eg.: The selected threshold name is "a"(-10dBm,-20dBm,-30dBm). The
measured result displayed: -11dBm (Optical power) at 1310nm upstream
measurements shown in above figure, as it is within -10dBm (Pass
threshold)~-20dBm(Warning threshold), therefore, it means the optical
signal in Pass status and the LED at 1310nm will light up with green color:
If the measured result is between -20~-30dBm, it means the optical signal
in Warn status and the LED at 1310nm will light up with yellow color which
means the optical signal may got problems but still can be used; If the
measured result is out of the range of thresholds, i.e greater than -10dBm
or smaller than -30dBm, then it means the optical signal got problems, the
LED at 1310nm will light up with red color. The same process be used at
1490 and 1550nm wavelengths.
1 4