KPM-11M Optical Power Meter User Manual
External and key function description
1
3
4
2
Ceramic ferrule
1
Silicone cap
2
USB charging port
LED lighting
3
4
1
2
3
13
8
4
5
6
7
9
11
10
12
Auto shutdown icon
5
13
LED light switch key: turn on/off the
flashlight, press any key to turn on the
backlight
Electricity
6
wavelength
7
Absolute power value and unit
8
Linear power value and unit
9
λ key: 7 kinds of test wavelengths
that can switch the optical power
10
Power on/off key: turn on/off the device
11
REF/dB key: Short press the dB unit to
switch, long press until the screen displays
REF to enter the relative optical power test
mode
12
Optical power wavelength switching
(Dry battery type is not rechargeable)
Power/Off button
Short press the power button to turn on
the meter. The meter has automatic
startup and automatic shutdown functions.
The default automatic shutdown time is 15
minutes. If you want to cancel this function,
press and hold the power button when it is
turned on. After turning it on, the " " icon
on the screen disappears, indicating that
the automatic shutdown is canceled.
Power reference value setting
1.After booting, enter the optical power
meter interface, short press the "REF" key
to set the current power value as the
reference power, which can achieve relative
optical power test (insertion loss test) or
absolute power test, enter the relative power
test mode at the bottom of the screen.The
insertion loss (dB) is displayed, and the screen
displays the reference value; short press the
"dB" key to switch between linear power and
absolute power display.
2.The units of linear power, absolute 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
On the optical power meter interface, short
press the "λ" key to switch the measurement
wavelength, select 7 different test wavelengths,
850nm/980nm/1300nm/1310nm/1490nm/
1550nm, 850nm, 1625nm to ensure the accuracy
of the test, select the wavelength Must be
consistent with the wavelength of the measured
optical signal.
λ
850
nm
980
nm
1300
nm
1310
1490
nm
1550
nm
nm
1625
nm
