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


  Over 30 hours continuous operation

  Handheld, light and easy-to-use

  CE FCC certificates


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.



  Network/BER testing

  Power meter calibration

  Link loss simulation

  Optical margin analysis

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.

Optical Variable Attenuator | OVA-50

  • Model


    Wavelength Range


    Calibrated Wavelengths


    Fiber Type

    9/125μm Singlemode

    Attenuation Range

    0 -60dB

    Insertion Loss


    Max Input Power


    Output Power Range (1)

    +18 ~ -55 dBm

    Setting Time


    Display Resolution


    Attenuation Accuracy 

    ±0.25dB @+25 ( Output power control mode)


    ±0.25dB @+25

    Return Loss



    FC/PC (Interchangeable SC,ST)

    Power Saving

    Auto-off after 5 minutes idle



    Power Supply

    Li-Ion Battery/AC Adaptor

    Battery Life

    Continuous operation >20 hours

    Operating Temperature

    0 ~ 50

    Storage Temperature

    -20 ~ 70

    Relative Humidity

    0~95% (non-condensing)


    345g (0.7 lbs)

    Dimensions (H × W × T)

    177×80×44mm (6.97×3.15×1.73 inch)

Houston, TX 

(832) 283.3773

  • LinkedIn - White Circle
  • Facebook - White Circle