Starting this month, EB-LINK has upgraded the quality inspection process for optical passive equipment: patch cords, pigtails, and accessories shipped with ODF have been changed from batch inspection to actual measurement one by one. Only insertion loss, return loss, and end-face inspection have passed the inspection before entering the shipment process.

Each piece of equipment needs to pass three pieces of data

The first step is insertion loss, which is measured one by one with a return loss and insertion loss all-in-one machine. The typical requirement is that a single pair of connectors is within 0.3 dB; the second step is return loss, and the LC/UPC surface is judged to be no less than 50 dB; the third step is the end face inspection under a 30x microscope. Scratches, glue stains, and geometric overruns on the end face of the ferrule are considered unqualified. The test data is saved according to the serial number and can be checked with the goods. Problems can be traced back to the specific one.

Why did we change from random inspection to individual testing?

There are two reasons: First, the proportion of random tests for project acceptance is increasing. A single defective product appears as a random alarm on the entire link, and the cost of on-site inspection is much higher than that of re-testing in the factory. Second, the proportion of batch orders with mixed lengths and mixed interfaces is increasing, ranging from 1 meter to 10 meters in the same box. The representativeness of random inspections for such orders is inherently limited. After the full inspection, the certainty of being ready for use upon arrival is significantly stronger.

Practical implications for project delivery

The premise that each pair of connectors in the link budget is estimated at 0.5 dB is that the device itself meets the standards; unit-by-unit testing allows for a high first-time pass rate during the acceptance phase, and significantly reduces the back-and-forth between repairs and replenishment. For reliability-sensitive situations such as substations, cooperate withSingle-mode single-core armored jumpers, mouse-proof jumper pigtails, special jumpers for Internet cafes, special jumpers for cabinetsExperience in using armor solutions can be referred toOptical isolation renovation of a 220kV substation communication network.

If you need to check the test records of a certain batch of equipment, you can contact 0755-83179002 to inquire about the packing slip number.