OVA-50 Intelligent Optical Variable Attenuator

OVA-50 Optical Variable Attenuator can precisely attenuate input optical signals at 1310/1490/1550/1625nm wavelengths and directly output defined stabilized optical signals. OVA-50 is applicable in various testing situations.


  • Attenuation range: 0-60dB
  • Direct output power control
    • Working modes
    • Output power control
    • Absolute/relative attenuation setting
  • Program (10 preset frequently-used attenuations)
  • Adjust at step of 0.05/0.10/1.00/10.00 dB
  • PC control via USB
  • USB power charging
  • Backlight
  • Over 30 hours continuous operation
  • Handheld, light and easy-to-use
  • CE FCC certificates


  • Network/BER testing
  • Power meter calibration
  • Link loss simulation
  • Optical margin analysis

Working Modes

Direct Output Power Control

Normal attenuator can only introduce and display an attenuation value, you need a separate power meter to measure or adjust the output power value of attenuated optical signal. Working like a combination of attenuator and power meter, OVA-50 Output Power Control mode enables direct setting of precise optical power level and can automatically stabilize output level without any interference by variations of input power.

Program Mode

User can preprogram frequently-used attenuations to reduce workload.



Wavelength Range1260~1650nm
Calibrated Wavelengths1310/1490/1550/1625nm
Fiber Type9/125μm Singlemode
Attenuation Range0 -60dB
Insertion Loss<2.5dB
Max Input Power+21dBm
Output Power Range (1)+18 ~ -55 dBm
Setting Time<3s
Display Resolution0.01dB
Attenuation Accuracy±0.25dB @+25℃ (Output power control mode)
Repeatability±0.25dB @+25℃
Operating Temperature0°C to 50°C
Return Loss≥55dB
ConnectorFC/PC (Interchangeable SC,ST)
Power SavingAuto-off after 5 minutes idle
Power SupplyLi-Ion Battery/AC Adaptor
Battery LifeContinuous operation >20 hours
Operating Temperature0℃ ~ 50℃
Storage Temperature-20℃ ~ 70℃
Relative Humidity0~95% (non-condensing)
Weight345g (0.7 lbs)

* Specifications subject to change without notice


  1.  Input power level should be at least 3 dB higher than selected output power level;
  2. Input power variations in frequency range <0.5 Hz


There are no reviews yet.

Be the first to review “OVA-50 Intelligent Optical Variable Attenuator”