VIAVI Solutions / JDSU / Fitel VA47K+1KSP20 Manual Variable Optical Attenuator
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VIAVI Solutions / JDSU / Fitel VA47K+1KSP20 Manual Variable Optical Attenuator

This JDSU / Fitel VA47K+1KSP20 Manual Variable Optical Attenuator is used and in excellent condition.


• Fiber Type (µm): 9/125
• Calibrated Wavelengths (nm): 1300/1550
• Return Loss: Low MM
• Connector Type: ST/HPC
• Port Type: Bulkheads
• Without Carry Case

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Stock # 66134-2
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VIAVI Solutions / JDSU / Fitel VA4 Series Manual Variable Optical Attenuators

  • Precision Attenuation
  • Two Calibration Wavelengths
  • Low Insertion Loss
  • Return Loss <60 dB
  • Very Long Battery Life
  • Portable for Field Use


The JDSU VA4 Series of manual variable optical attenuators are compact, portable instruments for field system testing as well as test and development in laboratory applications. They provide continuously variable attenuation range of up to 65 dB with calibration wavelengths of 830/1300 nm or 1300/1550 nm. Attenuation is set manually from the front panel at a 0.1 dB resolution. Unlike programmable attenuators, the attenuation level is maintained when the power is turned on or off. The attenuators use JDSU's ultra-linear attenuator prism and highly reliable microlens technology to produce accurate attenuation settings with low insertion loss and excellent return loss.

The display features a large-scale LCD readout, and the unit is powered by a long-lasting 9 V lithium battery for handheld operation in the field. Input and output ports are equipped with rear panel-mounted connector bulkheads, and all major connector types as well as the optional universal connector adapter (UCA) are available.

Product Family: VA4, VA-4, VA 4, VA47G+1KFP20, VA47G1KFP20, VA47G-1KFP20, VA47G 1KFP20, VA47K+1KFS20, VA47K 1KFS20, VA47K1KFS20, VA47K-1KFS20

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Attenuation Range1300/1550 nm: 65/60 dB
830/1300 nm: 50/40 dB
Single-Mode (SM)1300/1550 nm: ≤ 3.0 dB
830/1300 nm: ≤ 7.0 dB
Multimode (MM), 50/125 µm1300/1550 nm: ≤ 3.2 dB
830/1300 nm: ≤ 4.2 dB
MM, Other1300/1550 nm: ≤ 3.9 dB
830/1300 nm: ≤ 4.9 dB
SM, Analog< 60 dB
MM, 50/125 µm< 35 dB
Maximum Optical Input Power200 mW
Attenuation accuracy± 0.5 dB
Display resolution0.1 dB
Repeatability± 0.1 dB
Polarization Dependent Loss≤ 0.1 dB
Recalibration Period (Recommended)2 years
Battery Lifetime< 6000 hours
Dimensions (W x H x D)11.5 x 6 x 12.5 cm
Weight0.82 kg
Operating Temperature0-50 C
Storage Temperature− 40-60 C
HumidityMaximum 95 % RH from 0-50 C

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JDSU / Fitel VA4 Series Manual Variable Optical AttenuatorsJDSU / Fitel VA4 Series Manual Variable Optical AttenuatorsJDSU / Fitel VA4 Series Manual Variable Optical Attenuators
JDSU / Fitel VA4 Series Manual Variable Optical Attenuators

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Manuals, Datasheets, Drivers, Links

JDSU / Fitel VA4 Datasheet (pdf) 
Link to VIAVI Solutions / JDSU / Fitel Website 

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