Operation Instructions
1. Power On/Off and Auto-off Function
Press button to turn on the instrument. Press it again for 2 seconds or more to turn
it off.
This power meter has a power-saving function. If 10 minutes without any operation, the
instrument will automatically shut down. If you need to disable this function, only need
to press the button for 2 seconds when you turn on the instrument till it displays
“PERM”.
2. Backlight Function
When the instrument is powered on, short press button, you can control the backlight
function on or off. The backlight function supports you to use the power meter at night
or darker occasions.
3. Wavelengths
According to the project, we need to measure optical signals of different wavelengths.
Then we need to select a corresponding wavelength to measure the optical power. If
the wavelength needs to be measured does not match with the wavelength we select
on the optical power meter, it will lead to the measuring values meaningless.
Press button, the instrument will change wavelength, and display.
FOPM-201/FOPM-202 optical power meter calibration measured wavelengths are:
850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm.
4. Unit
button can be used to change the display unit of the measurement data to meet
the different requirement. When press this button for 2 seconds, the display will
successively show the dBm value or mW/uW value.
The numeric relationship between mW value and dBm value is: 10lg (mW) = (dBm).
5. Reference
button is used to set or check the reference value. Short press this button, the
display will show “REF” and the dBm value saved as reference value. When long press for
2 seconds or more, the instrument will save the current dBm value as a new reference
REF
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