www.joinwit.com
9
图
5-11
Short press
button
，
the meter top right corner displays
”
--AU
”
to indicate
this function is started. Meanwhile, the laser output wavelength in the source module
will be switched automatically according to the change of the same wavelength in the
power meter module.
For example
：
the meter internal source module has 1310/1490/1550 wavelength
，
the test
wavelength in the power meter module is 850/1300/1310/1490/1550/1625. If the test
wavelength in the power meter module is switched to 1550nm
，
the laser output wavelength
in the meter source module will be changed to 1550nm automatically
；
On the contrary,
when the test wavelength in the power meter module is different from the output wavelength
in the source module, the source module cannot follow automatically to change the
wavelength, and also no optical power output.
3. Backlight control function
With the instrument on,press
“
”
button to open or close the backlight.
4. Battery power display
(1)
if the battery icon becomes
“
empty
”
，
it means the battery is to be exhausted and
reminds the user to replace the battery in time. (image 5-12)
(2)
The user can use the attached USB adapter for power supply through Mini USB interface.
(image 5-13)
Image 5-12 Image 5-13
5. Frequency light detection
In the power meter mode, when the power meter detecting port receives the frequency
light input signal and it’s tested under the absolute optical power unit, the top right
corner of the screen will show HZ sign, indicating the current light signal frequency
is ***HZ.
（
image 5-14
）
Image 5-14
Notes
：
When using the frequency detection function, A type optical power meter only
detects frequency with the power range more than -40dBm
；
C type power meter detects
