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ZY-3303 optical variable attenuator
Item: ZY-3303 optical variable attenuator

Product nameOptical Variable Attenuator

Product mode3303

Telecom Maintenance 
CATV Maintenance
Comprehensive cable construction system
Optical instruments research and development
Optical communication education and lab testing
Other optical project
JW3303 handhold optical variable attenuator is used for continuously variable optical signal attenuation. As the attenuator is used in the laser system for the on-line testing, therefore, JW3303 can be used in the digital system of communication devices (such as: PHD, SDH) and also in the system of adopting analog modulation (CATV)

Main Features

stepwise attenuating by circumgyrated dial: attenuating step 0.05dB
Provide with the function of displaying dB and dBm attenuating value.
10 minutes Auto-off function can be activate and deactivate with keypad operation.
After off the instruments, the system will have the memorizing of the attenuating value and the attenuating step, in order to restore the system back to the previous shut down state when open the instruments next time.
Portable, rugged, lightweight; Easy to use.


Telecom Maintenance.
CATV Maintenance.
Comprehensive cable construction system.
Optical instruments research and development.
Optical communication education and lab testing.
Other optical project.


Type JW3303
Attenuating wavelengthRange 1260~1650nm
Fiber Model 9/125um SM
Optical Connector FC/PC
Calibrated wavelengths 1310/1490/1550/1625nm
Measurement Range 2~60dB
Resolution 0.05dB
Minimize Insertion Loss 2.0dB
Linearity 0.5dB
Repeating 0.2dB
Attenuating Accuracy 0.8dB
Return Loss at Input/ Output 35dBtypical value40dB
Max input 20dBm
Displaying type lattice 128*64 black and white, white back ground light
Rechargeable batteries 8.4V
Power supply adaptor 8.4V
Operation temperature 0~40
Operation Time 40 hours
Storage temperature -10~60
humidity 0~85%non- condensation
Dimensions 180X90X36.5
Weight (g) 427
Standard Packages
3303 3303 Main Body, Protective Rubber Boot, Rechargeable battery, Power Supply Adaptor, Instruction Manual and Cotton Swabs and Rigid hard carrying case.