User Guide
1. Technical Specifications
Measurement range
Wavelength range（nm）
Calibrated wavelength
Detector
Accuracy
Resolution
Working temperature
Storage temperature
Relative humidity
connector
Power supply
Working hours
Auto off
Weight(g)
Dimension(mm)
-70～+10 dBm -50～+26 dBm
800～1700
850nm、1300nm、1310nm、1490nm、1550nm、1625nm
InGaAs
<±3% （-10dBm、22℃）
-10℃～+50℃
-20℃～+70℃
90%（＋30℃）
280g
80mm*43mm*16mm
Linearity：0.1%，Non-linearity：0.01dBm
FC/SC (ST as Optional)
18650mAH Lithium battery
200 hours（without back light）
10min
VFL(as Optional)
Wavelength:650nm; Out Put: 1/10/20/30/50mw;
frequency:0HZ/2HZ
2.Appearance
1. Dust Cap
2. Connector
3. VFL (650nm）
4. VFL status indication
5. Rubber sheath
6. LCD screen
7. ON/OFF
8. VFL state switch key
9. Wavelength select
10. REF Relative power：Press 2
seconds to start relative test
11.DBm/w: Absolute power
12.Charge indicator
13.Charge interface
1. Wavelength
2. Power value
3. Unit
4. Battery level
5. Auto-off
3. Operations
3.1 Turn on/off
Press ON/OFF shortly to turn on the unit. Press ON/OFF
for a few seconds to turn it off and press this key slightly
to activate or deactivate the auto-off function.
3.2 Absolute power measurement
Insert optical signal (Insert the pigtail properly), turn on
the meter
Choose the wavelength via λ key. If the tested wavelength
is not exactly same to the one in the power meter, then
choose a close one from the power meter. For example,
1300nm wavelength is near to 1310nm, we can choose
1310nm to substitue 1300nm.
Press dBm/W to choose the display unit. The default
wavelength is 1310nm and working mode is dBm.
After the above steps, the LCD will show the test power
value.
3.3 Relative power measurement
Set the wavelength
Press REF for 2 seconds to enter the relative measurement
mode. Now LCD screen display 00.00dB
Measurement: Insert the pigtail need to be tested and
introduce another measurement light, now the current
value shown in the LCD is the difference value between
the tested signal and reference value.
The reference value shown in the REF position
Press dBm/W to review the current absolute power value.
Press REF to review the current reference value.
3.4 User self-calibration function
Work position
Self-calibration position
During the operation, when operators need to calibrate
the meter to be accordance with other meters. So our
product offers operators self-calibration function, the
following steps will tell you how to do:
Take out the batteries and pull up the switch 1 to Left
position(ON position).
Put the battery back to the battery compartment and turn
on the unit to choose the wavelength for calibration.
Now connect it with a pigtail which we already k now its
power and press REF or dBm/W to increase or decrease
the power value by 0.05d every time. Until the LCD display
the pigtail’s power (Or the d iffere nce gap less t han
0.3db), press ON/OFF to save the value
Repeat above operation for other wavelength
After recalibrate each wavelength, please pull down the
switch 1 (come back to the position, the opposition of the
Left )and turn off the meter
Opt ical Po wer Met er & VFL
VFL
入
REF
dbm
W
3
12
5
13
7
9
11
4
2
6
8
10
LITHIUM BATTERY OPTICAL POWER METER & VFL LITHIUM BATTERY OPTICAL POWER METER & VFL LITHIUM BATTERY OPTICAL POWER METER & VFL LITHIUM BATTERY OPTICAL POWER METER & VFL
1) ON/OFF：Press “ON/OFF” to turn it on. And press it for 3
seconds to turn it off. Under power-on mode, press this key
shortly to activate or deactivate the 10-minute auto off
function. The default setting is auto-off function ON when
start the meter. Operators can press ON/OFF shortly to close
the auto-off function.
Press “dBm/W” to enter absolute measurement2) dBm/W：
mode. Press it repeatedly to switch the display power unit
between W and dBm
Switch the wavelength from 6 calibrated wavelengths 3) λ ：
(850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm), the
current choice of wavelength will appears on the LCD
Used for absolute measu remen t and relative 4) REF：
measurement of the state of the switch and the relative
measurement of the reference value settings.
5) Backlight ：It is on when turning on the unit. It will turn off one
minute later. Operators can press any key to make backlight for
another one minute.
6) Function.
Press VFL to switch the VFL status, ON Glint or OFF. 7) VFL ：
Save the reference value：when enter the relative measurement
mode, press REF for 2 seconds to save thecurrent absolute
power value as REF value and show the relative power value in
dB unit.
Fuction keys introducts