Recently, a fiber optic link quick check manual was launched on the EB-LINK official website, placing single-mode and multimode, wavelength window, typical attenuation value and module nominal distance into the same comparison table, responding to the problem of the highest frequency on site: how far the link can run.

The manual begins by answering three high-frequency questions

The first category is the wrong choice of fiber type.The multimode module is equipped with a single-mode optical cable, or vice versa, and the link can be lit up at short distances, but it is prone to error codes for a long time.The second type is to only look at the nominal distance on the module label, do not check the actual attenuation, and find that the margin is insufficient at the time of acceptance.

  • Single mode common 1310 and 1550 nm windows, typical attenuation of about 0.35 and 0.25 dB/km
  • The multimode is mainly 850 nanometers, and the OM3 jumper runs within 300 meters.
  • 0.5 dB per pair of active connectors, 0.1 dB per weld estimate
  • The design value usually leaves a margin of 3 dB, covering aging and temperature drift.

Give three sets of configurations that can be applied directly by scenario

The manual breaks down common scenarios into three gears: the all-optical network in the park, the computer room interconnection in the building, and the long-distance monitoring in the field. Each gauge gives the recommended wavelength, module distance level, and jumper type. The vertical backbone of the building uses gigabit single-mode 10 kilometers, and multi-mode or high-speed cables are used between the cabinets. The tens of kilometers of station links directly fall on the single-mode module of the 40-kilometer or 80-kilometer class, and the supporting passive devices are listed side by side.

The second edition will be supplemented with optical power reading control

The first batch covers the most commonly used data in the selection stage. Version 2 plans to add a comparison explanation between the optical power meter readings and the module DDM reported values to facilitate operation and maintenance to determine whether the link attenuation is increasing or the module is aging.If you need to configure the list, you can dial 0755-83179002. Relevant pages such asComprehensive wiring scheme for campus network and FTTHUpdates synced.