Knowledge

Starting from the error troubleshooting records of the 485 bus of the welding robot, it explains the performance of variable frequency interference on the differential bus, the three-segment measurement method of the copper cable segment, and the grouping and address planning when moving the 485 channel to the optical fiber.

Taking the industrial computer disconnection in the welding workshop of an auto parts factory as an example, we review a three-layer delimitation sequence: first identify which link the phenomenon occurs, then separate the power path and common mode path, and finally determine whether it needs to be replaced with optical fiber.

Tenants in the shared office business enter and exit frequently. Whether the owners can handle changes themselves after the all-optical network is delivered depends on the quality of the handover. Three steps for review: practical training, spare parts provided by unit, and solidification of the tenant activation process.

Once the link is up, it's just a pass, and when the data is complete, it's complete. Review and sort out three sets of must-have records: port fiber core correspondence table, core-by-core optical power test records, and cutover ledger, explaining how each set of records will be used during future maintenance.

The routing options for central interconnection between buildings ranging from 1.8 to 6.2 kilometers are completely different from shaft cabling for a 120,000 square meter office building. This article reviews the optical cable routing choices and protection points of the two projects in different scenarios.

Replacing the module could not cure the repeated bit errors. After delimiting the physical connection, it was discovered that it was dust and coupling glue residue on the LC end face. This article reviews the three-step cleaning method and delimitation sequence, explaining why end face inspection requires fixed items for acceptance.

The main multi-mode in the building is converted to single-mode, and the old multi-mode resources in the building may not be completely demolished. This article reviews the three-step judgment method: first measure the distance, then evaluate the link status core by core, and finally downgrade and reuse, clarifying which ones can still be used and which ones must be replaced.

In the 100G upgrade between buildings, all ends of optical cables fall on the ODF distribution frame, and the quality of the ends determines the bottom line of link loss. This article reviews the detour of measuring more than 2dB at a time, and gives four key points to check the fiber, end face, label, and retest.

Talking about corporate responsibility doesn't have to start with a grand narrative. For optical communication equipment manufacturers, it is first of all external compliance: parameters are truthfully marked and documents are consistent; secondly, internal materials are introspected: compression packaging under the premise of anti-static and protection. This article outlines specific methods.

Integrators often ask the same questions when making their first inquiry: is it a factory, how long will the delivery be, whether code can be written, and whether to accept small orders. This article collects eight high-frequency questions into a quick answer, using public information to explain it clearly at once, saving the cost of back-and-forth communication.