Recently, a cross-speed substitution comparison table was launched in the selection manual area of the EB-LINK official website. The "can it be substituted" that appears repeatedly in technical support is classified into three categories: speed, distance, and cable. The prerequisites are noted one by one to avoid guessing based on experience.
How to put three types of high-frequency questions into one table
The top priority is the speed: whether the Gigabit port can be plugged into a 2.5G module, and whether the 10G port can be slowed down to use Gigabit. The second is the distance range: whether the 10-kilometer range module can withstand a link with relatively large measured losses. The third category is cable replacement: should we continue to use optical modules and jumpers for interconnection in the cabinet, or should we just replace it with a DAC. The three types of questions all have boundaries, but the answers were not originally on the same page, so they were merged into a table.
How to mark the difference between fungible and irreplaceable
- The rate row is divided into three columns: port support, module support, and negotiation results. Combinations that only satisfy one column are directly marked as irreplaceable;
- The distance line gives a margin prompt based on the actual measured loss. When a short link uses a long-distance module, the amount of attenuation that should be left is marked simultaneously;
- Cables are listed one by one according to the length ranges that can be checked on the site. Those that exceed the range are directly marked as not recommended, and no vague conclusions are written.
The model examples in the table all point to the product pages on the site, for exampleSFP 2.5G single mode dual fiber 20KM optical module, click on it to see the wavelength and distance labels, no need to look through the parameter table.
How to use the integrator and the engineering side respectively
Integrators usually check the table first and send screenshots of items that do not hold true for confirmation, and a round of communication can finalize it; the engineering team uses it as a quick check page before replacing parts, focusing on the speed and wavelength columns to avoid bringing the wrong model to the tower. The table is updated on a quarterly basis. New entries are marked with the update date on the same page, and old version entries are also marked as invalid to reduce hand-copying errors.
In the next step, the specification quick check and stocking suggestions will be merged into the same entrance, eliminating the need for cross-page searches. If you have substitution relationships that are not in the table and need to be determined, you can call 0755-83179002 on working days to report the port model and the measured link distance.