Greenlee / Tempo / RIFOCS 257A 850 nm LED Source
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Greenlee / Tempo / RIFOCS 257A 850 nm LED Source

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Stock # 44111-1
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Greenlee / Tempo / RIFOCS 257A 850 nm LED Source

  • Stable calibrated output
  • Proven, reliable, and compact design
  • Easy to use -(2) buttons control all
  • essential functions
  • Continuous wave and modulated output modes
  • Precision Universal Connector Interface (UCI) adapts to all industry standard fiber optic connectors


The Greenlee / Tempo / RIFOCS 257A 850 nm LED Source serves as an ideal 850 nm LED source for testing the insertion loss of multimode fiber optic cables and connectors accurately and efficiently. The 257A can also be used with an optical power meter for link loss testing of installed cable plants. With a calibrated launch optimized for 62.5/125 µm graded-index multimode fiber, the 257A LED source is particularly useful for testing and maintaining local area networks (LANs), premises networks, fiber distributed data interfaces (FDDI), and some telecommunications systems. The 257A may also be used for other multimode fiber types.

Product Family: 257A, 555B, 557B, 90AC

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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Greenlee / Tempo / RIFOCS 257A 850 nm LED SourceGreenlee / Tempo / RIFOCS 257A 850 nm LED SourceGreenlee / Tempo / RIFOCS 257A 850 nm LED Source
Greenlee / Tempo / RIFOCS 257A 850 nm LED Source

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