Exfo VBR-310 Variable Back-Reflector
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Exfo VBR-310 Variable Back-Reflector

This Exfo VBR-310 Variable Back-Reflector is used and in excellent condition.


• Monitor Port Installed
• Optical Interface: FC/APC
• Wavelengths: 1300 and 1550 nm, Selectable
• Fiber Type: 9/125 um, Singlemode
• Minimum Measurement (1300 nm): -7.6 dB (Min Insertion Loss)
• Minimum Measurement (1550 nm): -8.4 dB (Min Insertion Loss)

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Stock # 61961-1
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Exfo VBR-310 Variable Back-Reflector

  • Dynamic Range: -15 ±1 to -55 ±2 dB
  • Wavelengths: 1300 and 1550 nm
  • Remote Interface: GPIB


The Exfo VBR-310 Variable Back Reflector is an instrument used VBR-310 to generate levels of backreflection in order to simulate components and physical phenomena in fiber cables. The VBR-310 therefore determines backreflection tolerances of equipment under test. The VBR-310 can execute a program which commands the unit to step through back reflection levels of selected step size. The instrument may be programmed using the RS-232C or IEEE-488 interface (user defined).

Product Family: VBR310

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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Fiber TypeSinglemode
Wavelengths (nm)1300 and 1550
Dynamic Range (dB) -15 ±1 to -55 ±2
Resolution (dB)±0.1
Linearity (dB)±0.2
Repeatability (dB)±0.15
Accuracy (dB)±0.40

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Item Images

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Exfo VBR-310 Variable Back-ReflectorExfo VBR-310 Variable Back-ReflectorExfo VBR-310 Variable Back-Reflector
Exfo VBR-310 Variable Back-Reflector

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Manuals, Datasheets, Drivers, Links

Exfo VBR-310 Manual (pdf) 
Link to Exfo Website 

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