Handheld Optical Power Meter
6
(7) REF setting:
To store the current power value as the reference value which will be displayed on the top right of the
LCD screen, at the same time the “Ref” also display on the right top. It will compare the current power
with the reference power and show the relative power value in dB.
The relationship between relative value(dB), absolute value(dBm), and Ref value: relative value=
︱
absolute value
︱
-
︱
Ref
︱
(8) “B/L SET” backlight indicator
Indicate backlight control mode. Green light indicates “LDR” intelligent backlight control mode, Red light
indicate that key-control mode.
(9) “LDR” Intelligent backlight controller
In the intelligent backlight control mode, the controller will automatically adjust the backlight with the
outside light, in order to save power.
(10) Screen
Display the data and the instrument working mode.
4.2 Two sides
Indicator
(Green)
Indicator
(red)
xW
Ref value setting
Relative value setting
