FS FOPM-201 User manual

OPTICAL POWER METER
Fiber Testers
Quick Start Guide V1.0
VFL
REF
OPTICAL POWER METER
>2s UNIT >2s SET
GLINT
PERM Set
>2s OFF

Introduction
The handheld optical power meter is a fiber optic tester with compact size and friendly
operation interface. It has a wide range of power measurement and high accuracy.
When combine with a light source, it offers a quick and accurate testing solution. The
figures below display the product images of the six optical power meters.
FOPM-201/FOPM-202 FOPM-203/FOPM-204
FOPM-205 FOPM-107
λMenu
Enter
Units Ref
Optical MPO Power Meter
VFL
REF
OPTICAL POWER METER
>2s UNIT >2s SET
GLINT
PERM Set
>2s OFF
>2s PERM
>2s SAVE
>2sT WIN
OPTICAL POWER METER
>2s SET
REF
dBm/
dB/mw
ON
OFF
LOAD
DELETE
λ
1310nm
ONU
1490nm
MODE
MENU dBm/dB REF/SEL
SAVE
1550nm
VideoOLT
CO
OPTICAL POWER METER

Accessories
FOPM-205
FOPM-201/FOPM-202
FOPM-203/FOPM-204
ST Adapter x1SC Adapter x1 FC Adapter x1
SC Adapter x2 ST Adapter x1 FC Adapter x2
USB Cable x1
ST Adapter x1SC Adapter x1 FC Adapter x1
AC Adapter x1 CD x1
USB Cable x1

FOPM-107
AC Adapter x1 CD x1
CD x1
AC Adapter x1 Ceramic Sleeve x3

Installing
1. Install ST connector.
Install FC fiber cable.
Inserting ST Cables
Inserting FC Cables

2. Install ST fiber cable.
1. Install SC connector.
Inserting SC Cables

2. Install SC fiber cable.
Install MTP fiber cable.
Inserting MTP Cables

Function Introductions
FOPM-201/FOPM-202
PERM Set
>2s OFF
Button Description
>2s UNIT
REF
>2s SET
VFL
GLINT
Power/Backlight Button
Wavelength/Unit Shift Button
REF Setting Button
VFL Control Button
VFL
REF
OPTICAL POWER METER
>2s UNIT >2s SET
GLINT
PERM Set
>2s OFF

Operation Instructions
1. Power On/Off and Auto-off Function
Press button to turn on the instrument. Press it again for 2 seconds or more to turn
it off.
This power meter has a power-saving function. If 10 minutes without any operation, the
instrument will automatically shut down. If you need to disable this function, only need
to press the button for 2 seconds when you turn on the instrument till it displays
“PERM”.
2. Backlight Function
When the instrument is powered on, short press button, you can control the backlight
function on or off. The backlight function supports you to use the power meter at night
or darker occasions.
3. Wavelengths
According to the project, we need to measure optical signals of different wavelengths.
Then we need to select a corresponding wavelength to measure the optical power. If
the wavelength needs to be measured does not match with the wavelength we select
on the optical power meter, it will lead to the measuring values meaningless.
Press button, the instrument will change wavelength, and display.
FOPM-201/FOPM-202 optical power meter calibration measured wavelengths are:
850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm.
4. Unit
button can be used to change the display unit of the measurement data to meet
the different requirement. When press this button for 2 seconds, the display will
successively show the dBm value or mW/uW value.
The numeric relationship between mW value and dBm value is: 10lg (mW) = (dBm).
5. Reference
button is used to set or check the reference value. Short press this button, the
display will show“REF” and the dBm value saved as reference value. When long press for
2 seconds or more, the instrument will save the current dBm value as a new reference
REF

Function Introductions
FOPM-203/FOPM-204
value. Meanwhile the“REF” sign will flash 3 times on the display. After that the display
will show the dB value. Each wavelength can set its reference value.
6. Visual Fault Locator Function (Optional)
When power meter with visual fault locator, you can short press the button to
control VFL status (on, glint, or off).
VFL
>2s PERM
>2s SAVE
>2s TWIN
OPTICAL POWER METER
>2s SET
REF
dBm/
dB/mw
ON
OFF
LOAD
DELETE
λ

Operation Instructions
1. Power On/Off and Auto-off Function
Press button briefly. The instrument powers on, and backlight switches on.
Press button briefly again. The instrument powers off, and backlight switches off.
2. Set Wavelength and Activate Auto-wavelength Recognition (TWIN)
Press button repeatedly until the desired wavelength is displayed. You can select
from six possible wavelengths: 850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm.
>2s PERM
ON
OFF
ON
OFF
ON
OFF
>2s SAVE
LOAD
Button Description
Power Button
Wavelength Shift Button
Unit Shift Button
Value Storage Button
REF Setting Button
Backlight Control Button
λ
λ
>2s SET
REF
NOTE: Auto-off function
(1) The instrument will power off automatically if 10 minutes without any
operation.
(2) While in the power-on state, press button for about 2 seconds to turn
off the “Auto-off ” function.
ON
OFF
dBm/
dB/mw

REF
REF
The instrument defaults to the wavelength which the user set in the last test. When
used with the FOLS-203 and FOLS-204 optical light source, the wavelength will shift
automatically according to the output wavelength of the light source. Long press
button to activate the auto-wavelength recognition and the "TWIN" will show on the
LCD. Short press button to close the "TWIN".
3. Switch Measurement Mode
There are 3 measurement modes you can choose by pressing the button
repeatedly, dB, dBm and mW.
4. Set Reference Level
(1) Press button to display the stored reference level for the current wavelength
and a sign of “REF” will be displayed on the screen to indicate that it is a reference value.
The displayed value only lasts 1 second.
(2) Press and hold button over 2 seconds to store the presently measured value as
the new reference level for the current wavelength. During the process, the “REF” sign
flashes twice on the screen and buzzer sound is heard. Once the new reference level is
set, the instrument switches to the dB measurement mode. The displayed value only
lasts 1 second.
5. Switch Backlight of LCD On/ Off
Press button. Backlight switches on.
Press button again. Backlight switches off.
6. Frequency Detecting
If the tested wavelength is carrying a tone of 270Hz, 1kHz, or 2kHz, the respective
frequency indicates on the screen.
7. Overflow of Measured Power Value
If the measured power value is too high, the LCD screen will display “HI”.
If the measured power value is too low, the LCD screen will display“LO”.
λ
λ
dBm/
dB/mw

8. Storage of Current Test Value
Press button over 2 seconds, the “SAVE” flashes on the screen once with the
sounds of the buzzer. It indicates the setting is finished. It will display the stored value
and the serial number of the storage. Then, the power meter will return to the test state
automatically.
9. Check the Storage Records
Press button, it will display the latest record.
Press button, it will browse the forward records.
Press button, it will browse the afterward records.
Press and button, it will delete all the records.
LOAD
LOAD
λ
REF
REF
FOPM-205
1310nm
ONU
1490nm
MODE
MENU dBm/dB REF/SEL
SAVE
1550nm
VideoOLT
CO
OPTICAL POWER METER

MODE
MENU
dBm/dB
REF/SEL
SAVE
Button Description
Power Button
Test Mode Button
Storage Button
Menu Mode Shift Button
Unit Shift Button
REF Setting Button
Operation Instructions
1. Power On/Off and Auto-off Function
Press button to turn on the instrument. It will automatically go to test menu. In
test menu, short press button (less than 2 seconds) to activate or deactivate the
auto-off function. The auto-off function means the instrument will shut down
automatically if the instrument has not been operated for a certain period of time. The
time period can be set and the default is 10 minutes.
2. Test Mode Switch
In the test menu, press button to switch between normal test mode and P/F test
mode.
(1) Normal Test Mode
Normal test mode means do not setup threshold value but display optical power
directly. In this mode, the LED indicators will not light. The results are displayed in 2
MODE

(2) P/F Test Mode
P/F test mode means the measured light power comparing to a preset threshold value
to determine if the measured light power meets user’s requirement or not. LCD will
display the optical power and current state. The LED indicators below the LCD display
will also change color to match the current state of measured light. This test mode is
very useful in some special cases required. See Fig. 2.
units: dB and dBm, using button to switch. See Fig. 1.
Unit dBm is to display the actual power.
Unit dB is to display a power value relative to a reference value. In this mode, reference
value needs to be preset correctly.
dBm/dB
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1310nm 1.2
-4.5
-15.0
1490nm
ONU
dB
dB
dB
Auto off
OLT
1550nm
VIDEO
Fig.1 Normal Test Mode Menu (dB)
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1310nm 1.2
-4.5
-15.0
1490nm
ONU
dBm
Pass
Fail
Warning
dBm
dBm
Auto off
OLT
1550nm
VIDEO
Fig.2 P/F Test Mode Menu

MODE
3. Threshold Setup
The user can set up the value. The steps are as following:
In the menu mode, select the second "Threshold Setup" enters to threshold setup
menu. See Fig. 3.
In this menu, left side displays wavelength and right side displays threshold value. Top
line indicates system information (date and time) and bottom line indicates the
information of threshold including threshold symbol, threshold number and name.
In this menu, short press Threshold button (less than 2 seconds) to switch the
wavelength among 1310nm, 1490nm and 1550nm. Press ▲( ) button to view the
previous record, ▼( ) button to view the next record, button to validate the
current threshold value. After the above operation, all P/F mode test results will base on
this threshold value.
dBm/dB REF/SEL
Fig.3 Threshold Setup Menu
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1310nm 1.2
-4.5
-15.0
ONU
dBm
Pass
Fail
Warning
dBm
dBm
TelecomThreshold 01
USING
4. Time Setup
In the menu mode, select the forth "Time Setup" enters to time setup menu. See Fig. 4.
NOTE: The threshold value can only be preset by PC software. See PC
software section for detail. After finishing the setup, press button (less
than 2 seconds) to exit the setup menu.

Fig.4 Time Setup Menu
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Time Setup
Yes
08-10-25
15：02：03
In the time setup menu, the button becomes arrow button - using it to move
cursor. When the cursor moves to a number, the user can use ▲button to increase the
value and ▼button to decrease the value. When the cursor moves to“ Yes” and press
button for more than 2 seconds, the “ Yes”will flash, means the instrument accepts
the time change. During the time setup, the user can press button (less than 2
seconds) to exit time menu and back to the test menu, then the system time setup
remains unchanged.
5. Unit Switch
When the instrument is in normal test mode, press button can switch the unit
between dBm and dB. Here, the unit dBm is the actual power and unit dB is a power
value relative to reference value. Refer to the next section about “Reference Value
Setup”. When the instrument is in the P/F test mode, pressing button will
automatically exit P/F test mode and switch to normal test mode. Its unit will be in dB.
6. Reference Value Setup
In the test menu, press button for more than 2 seconds, then the LCD will display
“REF” in red (see Fig. 5). This means the instrument chooses the current light power as
the reference value. The test results afterward are the values after comparing to this
reference value. Now, the unit will be in dB and LED below the LCD display will not light.
MENU
REF/SEL
dBm/dB
dBm/dB
REF/SEL
SAVE

In the time setup menu, the button becomes arrow button - using it to move
cursor. When the cursor moves to a number, the user can use ▲button to increase the
value and ▼button to decrease the value. When the cursor moves to“ Yes” and press
button for more than 2 seconds, the “ Yes”will flash, means the instrument accepts
the time change. During the time setup, the user can press button (less than 2
seconds) to exit time menu and back to the test menu, then the system time setup
remains unchanged.
5. Unit Switch
When the instrument is in normal test mode, press button can switch the unit
between dBm and dB. Here, the unit dBm is the actual power and unit dB is a power
value relative to reference value. Refer to the next section about “Reference Value
Setup”. When the instrument is in the P/F test mode, pressing button will
automatically exit P/F test mode and switch to normal test mode. Its unit will be in dB.
6. Reference Value Setup
In the test menu, press button for more than 2 seconds, then the LCD will display
“REF” in red (see Fig. 5). This means the instrument chooses the current light power as
the reference value. The test results afterward are the values after comparing to this
reference value. Now, the unit will be in dB and LED below the LCD display will not light.
Fig.5 REF Value Setup Menu
Fig.6 View REF Value Menu
In the test menu, short press button (less than 2 seconds), then current reference
value will appear on LCD display. See Fig. 6.
7. Backlight Setup
In the menu mode, select the third "Backlit Setup" enters to backlight setup menu. See
Fig. 7.
In this menu, press ▲( ) button to brighten the backlight and ▼( ) button
to weaken the backlight. After completing the setup, press button (less than 2
seconds) to save the setting, exit and back to the menu mode. Press button twice
to exit and back to the main mode.
MENU
MENU
REF/SEL
Auto off
10-03-03 11: 43: 15
1310nm
ONU
1490nm
OLT
1550nm
VIDEO
REF
10-03-03 11: 43: 15
1310nm 1.2
-4.5
-15.0
ONU
dBm
Ref
Ref
Ref
dBm
dBm
Auto off
1490nm
OLT
1550nm
VIDEO
10-03-03 11: 43: 15
MODE dBm/dB

8. Description of Memory Record Function
Description of Interface:
At the main interface, it shows the current recording number on the left bottom of the
page.
Displaying: num: xxxx (xxxx means the current recording number, the maximum
number up to 1000 pieces). As you may refer to the Fig. 8, it means there are 24 pieces
of test recording inside.
Press button for longer than 3 seconds to save the current testing value, as you
may refer to the Fig. 9, the recording number automatically adds 1 when the interface
shows "SAVE".
At the "record view" interface (refer to Fig. 10), the characters on top of the horizon line
are"total number of recording" and "wavelength" (from left to right). The characters
under horizon line are "the number of recording" and the optical power value in
accordance with the corresponding wavelengths.
In the menu mode, select the first "record view", and press button to enter the
"record view" interface, refer to Fig. 10 for this interface.
Fig.8
Fig.9
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1310nm
ONU
dBm
dBm
dBm
Auto off
1490nm
OLT
num: 0024
Low
Low
1550nm
VIDEO Low
MODE
10-03-03 11: 43: 15
SAVE
REF/SEL

At the "record view" interface, you may see the main menu on the bottom of the page,
they are (from left to right): ESC X RST
There is an underline when you selected the menu ( the "ESC" has been chosen in Fig.
10), press "Threshold" shortly to move the underline from left to right , after the
underline moved to your ideal menu, press shortly to execute it.
Description of every individual menu:
: Page up to the last 10 recording
: Page down to the next 10 recording
: Page up to the last 100 recording
: Page down to the next 100 recording
ESC: Exit the "record view" interface ( same as press )
X: Select one or more than one recording to delete
RST: Reset the recording memory, this operation is not reversible and it'll take 5 seconds
to complete with power supply can not be disconnected, otherwise it may damage the
chip of tester.
At the "record view" interface, press button to move "X" upward one step, press
button to move "X" downward one step. In Fig. 10, the interface explains that
there are totally 3 testing results inside, "low" means the saving power value is lower
than the value of the threshold setting. In Fig. 11, "high" means the saving power value
is higher than the value of the threshold setting. The digital means the power value of
corresponding wavelength.
REF/SEL
Fig.10
3 1310 1490 1550
Esc X RST
low
low
low
low
low
low
low
low
low
1:
2:
3:
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MODE
dBm/dB