Komshine KPM-25m User Manual

KPM-25m Mini Optical Power Meter User Manual
1
External and key function description
8
9
3
10
4
5
1
OPM interface: insert the fiber to be tested, test the optical power.
2
LED lighting: flashlight lighting
3 Display: display test results and other information
4
λ key: can switch 7 test wavelengths
5
LED button: turn on/off the flashlight, press any button to turn
on the backlight
6
REF/dB key: Short press the dB to switch unit, click once
uW/dBm/dB to enter the upper clear data , press and hold
until REF is displayed on the screen, and set the current optical
power as reference value, enter the relative optical power test
mode, the screen will display the setted reference .
7 On/off key: turn the device on or off
9 wavelength
Battery level
11
Unit
13
2
Power on/Auto power off
Short press the power button to turn
on machine, and automatically start the
auto-off function, the default auto-off
time is 10 minutes. If you want to cancel
this function, press and hold the power
button .when starting up. When the
power on icon disappears, it means to
cancel the auto-off function.
1
2
nm
1310
l0
dBm
HZ
270
λ
6
REF/dB
7
8 Auto Off
Frequency
10
Numerical value
12
nm
1310
l0
270 HZ
λ
REF/dB
3
1310
11
HZ
270
12
13
4
850
1310
1550
On the optical power meter
interface, short press the "λ" key to
switch the measurement wavelength.
You can choose 7 different test
wavelengths, 850nm/980nm/1300nm/
1310nm/1490nm/1550nm, 850nm,
1625nm. To ensure the accuracy of the
test, the selected wavelength must be
consistent with the wavelength of the
measured optical signal
5
1310
dBm
270 HZ
Optical power reference value setting
-5. 0 0
REF
Enter the optical power meter
interface after booting, short press the
"REF" key to set the current power value as
the reference power, which can realize
relative optical power test (insertion loss
test) or absolute power test. After entering
nm
-5. 0 0
the relative power test mode, the insertion
REF
dBm
loss (dB) is displayed at the bottom of the
screen, and the screen displays the
reference value; short press the "dB" key to
switch between linear power and absolute
power display.
The units of linear power, absolute
λ
REF/dB
power, and relative power are nW, dBm,
and dB respectively.
P absolute power = 10lgP linear power /
1mW.
P relative power = P absolute power-P
reference power.
Optical power wavelength switching
nm nm nm
980 1300
nm nm
1490
nm nm
1625
λ
LED lighting
Press the LED key to control the
flashlight to turn on and off. Press
nm
l0
any key to turn on the backlight.
dBm
λ
REF/dB
dBm
REF/dB
nm
1310
l0
dBm
270 HZ
λ
REF/dB