F i b e r O p t i c S o l u t i o n s P r o v i d e r
13/15
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Pres
s “
MENU/ENTER”
to enter the menu
，
press“▼
”
to select“display
absolute/relative value”option
选，
Press “
MENU/ENTER”
key again to enter
the absolute/relative value menu
（
draft 8
）。
Select “1.display absolute power”
，
press “
MENU/ENTER”
to confirm and
back to interface draft 15.Absolute attenuation value is 21.65dB
。
It is
calculated by formula “relative power=absolute power-reference power”
。
Draft15
Use the same method to check the relative attenuation value.
5.2.6 After your test
，
press“
”to turn off the unit and cover back the
dust-proof cap
。
6. Maintenance
1. It is important to keep all optical connectors and surfaces free from oil,
