Prokit's Industries MT-7600 - Manual (Page 4)

Appendix:
Optical fiber loss measurement
Step 1- Optical Reference Level
Turn on optical power meter and press the λ key to select the wavelength.
Turn on optical light source and select the wavelength. Wait for 1-2 minutes
until it stabilize. Select a piece of patch cords, which is used to connect with
the light source. The patch cords must be the same fiber type as the fiber
under test. Connect the light source with the Power Meter through the
source patch cords. Power Meter will get the power measurement value.
This value should be close to the value of the light source. If it has wide
disparity, please make sure the fiber connection is clean properly else
replace jumpers.
Press the dB key; 0dB will be displayed on the screen. The tested power
values will be set to the reference value.
Step 2-Optical Loss Measurement
Keep the source patch cords connection with the light source.
Connect the Power Meter and light source (emitting source) to the optical
fiber link respectively.
LCD Display
850nm 1300nm 1310nm 1550nm
HI dBm mWuW
AUTO OFF dB nWpW
1. Low-Battery indicator: Please use alkaline battery to increase normal
operation time. When low-bat indicator is lighted, please change battery
immediately. This can assure the stability of power.
2. Wave length: Display currently measurable wavelength.
3