Govo Telecom GW3201 User manual

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
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GW3201 PON Optical Power Meter
(1310nm 1490nm1550nm)
GW3201 PON Optical Power Meter aims at the FTTx application and maintenance which not only
can be used to test and estimate the PON signals at the same time, but also the normal power
measurement and fault identification. It is a useful, essential and ideal tool for the construction and
maintenance of the PON projects.
1.Features
Providing simultaneous measurement at all three wavelengths
(1490nm, 1550nm&1310nm )
Burst mode measurement at 1310nm wavelength
Large LCD screen with backlight function
10 minutes Auto-off function
Six calibration wavelength available when tested as Normal OPM
(850,1300,1310,1490,1550&1625nm)
Added VFL Function for quick and efficient fault identification
Data upload via USB cable
1000 storage test records
10 different threshold sets;
3 Colors LED light Green, Yellow or Red represent 3 types of signal conditions Pass, Warn or
Fail.
Added User self-calibration function in software which used to calibrate the PON module or set
the threshold value.

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
2
Added Factory Default function in software which enable all the customers setting back to the
factory setting
2. Specifications
PON module:
Model GW3201
1310 upstream measurement
Pass Zone(nm) 1260~1360
Isolation 1490/1550(dB) >40
Measurement Range(dBm) -40~+10
1490 downstream measurement
Pass Zone(nm) 1470~1505
Isolation 1550nm(dB) >30
Isolation 1310nm(dB) >40
Measurement Range(dBm) -40~+12
1550 downstream measurement
Pass Zone(nm) 1535~1570
Isolation at 1490nm(dB) >40
Isolation at 1310nm(dB) >40
Measurement Range(dBm) -40~+25
Measurement Accuracy
Connatural uncertainty(dB) +-0.5
Linearity(dB) +-0.1
Passing through insertion Loss(dB) <1.5
General Information
Detector Type InGaAs
Optical Connector Interchangeable FC/SC/ST
Fiber Type 9/125um
Display LCD:128*64
Measurement Unit dB/dBm/xW
Resolution (dB) 0.01
Operation Voltage(V) DC 3.3 5.5
Power Supply rechargeable battery
Working Hours (hr) 90 without backlight
Operation Temperature(oC) -10~+60
Storage temperature(oC) -25~+70
Weight(kg) 500g
Normal Optical Power Meter Module
Measurement Accuracy
Connatural uncertainty(dB) 0.25

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
3
Linearity(dB) 0.1
Measurement Range(dBm) -70~++6 or -50~+26
General Information
Measurement Unit dB/dBm
Resolution (dB) 0.01
Calibration Wavelength(nm) 850,1300,1310,1490,1550,1625
Detector Type InGaAs
Optical Connector FC/SC/ST Interchangeable
Fiber Type 9/125um
Working Hours (hr) 100 without backlight
2.3 VFL Module
Output Power(mW) 1mw
3. Packing List
1.PON optical power meter 1 set
2.User Guide 1 copy
3.Carrying bag 1 pc
4.Power adapter 1 pc
5.Warranty Card 1 pc
6. Pass Certificate 1 pc
4．Operating Instructions

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
4
4.1Function description
Icons Functions
POWER ON/OFF or set AUTO POWER OFF
Access menu and select function
Enter menu or select current operation
Exit current operation without saving
Select functions, +
Select functions, -
5．Operation procedures
5.1 Power on
Press to power on the device, the following screen will appear:
There are the measurement results of three wavelength appearing on the screen, i.e.: 1310nm
upstream test and 1490nm/1550nm downstream test. The measurement value will appear when
there is light passing through the optical channel, otherwise “LOW” will appear.
5.2 Power Off
While the power meter is
on, press and hold it for about 2 seconds to power off the
device.
5.3 Set threshold value
The setting of threshold value will influence the status of the three
indicators and the status of measurement results. For example, if the option
“1310nm” is set as: -15, -30, -40, it means that: when the optical power
measurement value of 1310nm is greater than -15dbm, the optical circuit
will be normal, the moment the 1310nm indicator turns in green; when the
optical power measurement value of 1310nm is within -15dBm～-30dBm,
it means that problems may exist in optical channel but it is still usable, the
moment the 1310nm indicator turns in yellow; when the optical power measurement value of
1310nm is within -30dBm~-40dBm, it means that there exists abnormal in optical channel, the
moment the 1310nm indicator turns in red; if the optical power measurement value s less than
-40dBm, the moment the 1310nm indicator turns in dark, “LOW” appears in the LCD area where

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
5
the results are displayed. To conclude, “green” represents “Pass”, “yellow” represents “warning”,
“red” and “dark” represent "Error". So does 1490nm or 1550nm test.
(1) While in main interface, press , a menu as below will pop up:
(2) Select the setting you desire by pressing and , press , to enter the setting interface
as shown below:
(3) Here user can set language, time, auto power off, incidental mode,
threshold value, calibration. For example, if you select “threshold
value”, the setting interface will appear as below.
(4) Press to select option. Press or to increase or
decrease the threshold by 1 respectively. If the option is Save, press
, the change will take effect.
(5) If the operation is Default, press , the threshold value will be
rest to be default value.
5.4 Calibration
This ability is designed to set tolerance, it will increase the power reading by 1.
(1) Enter setting interface, select Calibration, press , the calibration screen will appear as
below:
(2) Press to select the option you desire. Press or to increase or decrease the
calibration value by 0.01 respectively. If the option is Save, press , the change will take
effect.
(3) If the operation is Default, press , the threshold value will be
rest to be default value.
5.5 Data upload
The measurement results can be saved in the device, or be uploaded to PC using upper
computer software. Connect one end of data cable to the port of PC Link in the device, the other end
USB port of PC, run the upper computer software, and set the software as per default configuration,
then you can directly click “Upload” on upper computer to transfer the data to PC.
5.6 Measurement procedures
(1)
Press to power on the meter, enter threshold value setting interface to set threshold
value.
(2) Connect in the optical fibre to be tested.
It supports measurement of three wavelength i.e.: 1310nm upstream, 1490nm and 1550nm
downstream at the same time.
For example: threshold value is (+3dBm, -10dBm, -30dBm), the measurement readings of the meter
are: the value for 1310nm upstream test is +1dBm, which is within +3～-10dBm, it means that the
optical circuit is normal, so in the testing screen, the power value for 1310nm is displayed in green;
if the power value falls within -10dBm～-30dBm, it means that the optical circuit may be wrong but
is still usable, so in the testing screen, the power value for 1310nm is displayed in yellow; if the
power value falls outside of threshold value, it means that there exists abnormal in optical circuit,
the power value of the optical circuit is too strong or too weak, so in the testing screen, the power
value for 1310nm is displayed in red. So does 1490nm and 1550nm test.

Shanghai Govo Telecom Co.,Ltd
Contact :Ms Veronica Zhao Skype ID:govochina E-MAIL: [e-mail]
Company Address: Room 616,North Building,Fortune 108 Square, 1839# Qixin Road, Shanghai, 201101,China
Website: www.gwfiber.com MOBILE:[phone] TEL:[phone] FAX:[phone]
6
6．Applications
FTTx/PON opening: it is used to measure all PON signals during opening stage, in order to
verify and ensure network standards are satisfied;
FTTx/PON maintenance: it is used to solve various transfer problems, e.g.: dirty connector ends,
bending, broken optical fibre, any of such problems may produce signal loss or decrease transfer
performance.
7．Maintenance
1. Regularly clean the end of sensor, keep it free of grease, dirt. Don’t use dirty, non-standard
connector, don’t insert in the end in poor polishing conditions, otherwise the sensor's end may be
damaged, otherwise the performance of entire system may degrade.
2. Use only one adapter if possible.
3. If you are not going to use the tester for the time, cover the dust-proof cap immediately to keep
the end clean. Long-time exposure in air may gather dust therefore influencing measurement
accuracy.
4. Plug and unplug the adapter with care, don’t leave any scratches on the ports.
5. Regularly clean the surface of sensor, when cleaning the sensor, please gently wipe the surface
using cotton swab by circling the perimeter.
6. Handle the tester with care, protect it against fall or collision.
8. Warranty
No parts of the product can be repaired by user himself.
1. Warranty period: 12 months since the date of shipment. If any product defect within the above
said period, we will repair or replace the defective product, however, in no events we will bear
responsibilities in excess of the product’s sales price.
2. If any fault occurs during usage, user can first solve them according to above trouble-shooting
instructions, however, if such efforts fail, the user shall not open the cabinet of the product by
himself, he should contact our market department or local dealers.
3. For any quality problem arising of production defect, the manufacturer will repair or replace the
defective product free of charge, however, any damage caused by improper-operation or good
product will not be covered by the above warranty.
Notwithstanding the foregoing terms, any problem/fault caused for the following reasons are not
included warranty.
1. The product has been repaired or modified without the authorization of the manufacturer
2. The problem or fault arising of improper use, negligence or incidence.
Warranty Registration
The product is accompanied by a Warranty Registration Card, please complete it and send it back to
us together with a photocopy of the invoice, they will be used as the voucher for any maintenance,
technical update or calibration that we may make in the future.