check the newest stored data. Then short press button and button to check the
previous stored data. Short press button to exit the data-saving interface.
6. OPM - Reference
button is used to set the reference value or switch the absolute or relative value.
Press for 2 seconds or longer, "REF" sign will display on the screen after flashing 3 times,
the instrument will use the current measurements to overwrite the original setting
value and set it as a new reference value. Meanwhile LCD will display set REF value
(dBm) and dB value. Each wavelength can set their own reference value.
Short press button can convert between absolute and relative value. The absolute
value on the screen will display the measuring absolute value (dBm/uW), the relative
value on the screen will display the "REF", the setting REF value (dBm) and the difference
between actual measured value and reference value (dB).
7. OLS - Laser On/Off
When the instrument is powered on, short press button to turn on/off OLS function.
If OLS is off, it will display "OFF" in the LCD. If OLS is on, it will display the current
wavelength of OLS.
8. OLS - Select Wavelength
When turning on OLS, press button to select the output wavelength you need. If
using other OPM to test the OLS power, then the OPM should select the same
wavelength as OLS has.
9. OLS - Modulation Output
Short press button, you can load a modulation in the current output laser, and
display modulation (270Hz, 1kHz, 2kHz). Connecting with an optical power meter with
frequency identification function, the OPM can identify the laser's current load
modulation, and load a same frequency.
LASER
ON/OFF
RECORD
-2s SAVE
REF
-2s SEF
REF
-2s SEF
MOD
-2s ID
OPM
λ
OLS
λ
