{"id":1246,"date":"2026-10-16T09:02:00","date_gmt":"2026-10-16T09:02:00","guid":{"rendered":"https:\/\/www.fenxifiber.com\/plc-splitter-lot-acceptance\/"},"modified":"2026-10-02T10:00:48","modified_gmt":"2026-10-02T10:00:48","slug":"plc-splitter-lot-acceptance","status":"publish","type":"post","link":"https:\/\/www.fenxifiber.com\/ar\/plc-splitter-lot-acceptance\/","title":{"rendered":"PLC Splitter Uniformity Directivity and PDL in Lot Acceptance"},"content":{"rendered":"

Uniformity, directivity and polarization-dependent loss describe different behaviours and must not be replaced by a single insertion-loss value. Lot acceptance should define the method, wavelengths, sample plan and disposition rule before shipment.<\/strong><\/p>\n

Uniformity compares output-port loss spread; directivity concerns unwanted coupling in the reverse direction; PDL describes loss variation with polarization. Values depend on the stated configuration and method. Buyers should request raw port-level data and a product-specific specification rather than transferring limits from an unrelated package or split ratio.<\/p>\n

\"Planar<\/figure>\n

What Must Be Decided for PLC splitter uniformity directivity PDL?<\/h2>\n

\u0627\u0633\u062a\u062e\u062f\u0645 \u062c\u062f\u0648\u0644 \u0627\u0644\u0642\u0631\u0627\u0631 \u0644\u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0645\u0648\u0636\u0648\u0639 \u0625\u0644\u0649 \u0645\u062f\u062e\u0644\u0627\u062a \u0645\u062d\u062f\u062f\u0629 \u062a\u062a\u0639\u0644\u0642 \u0628\u0627\u0644\u0634\u0631\u0627\u0621 \u0648\u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0627\u0644\u0642\u0628\u0648\u0644. \u064a\u062c\u0628 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0643\u0644 \u0635\u0641 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0648\u0627\u0644\u0645\u0633\u0627\u0631 \u0648\u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0646\u0633\u062e\u0647 \u0645\u0646 \u0643\u062a\u0627\u0644\u0648\u062c \u0639\u0627\u0645.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0645\u062c\u0627\u0644 \u0627\u062a\u062e\u0627\u0630 \u0627\u0644\u0642\u0631\u0627\u0631<\/th>\n\u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u062a\u062d\u062f\u064a\u062f\u0647<\/th>\n\u0644\u0645\u0627\u0630\u0627 \u0647\u0630\u0627 \u0645\u0647\u0645\u061f<\/th>\n\u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0627\u0644\u0627\u062d\u062a\u0641\u0627\u0638 \u0628\u0647\u0627<\/th>\n<\/tr>\n<\/thead>\n
Parameter definition<\/td>\nFormula, direction and units<\/td>\nPrevents inconsistent reports<\/td>\nControlled specification<\/td>\n<\/tr>\n
\u0627\u0644\u0623\u0637\u0648\u0627\u0644 \u0627\u0644\u0645\u0648\u062c\u064a\u0629<\/td>\nExact test wavelengths and condition<\/td>\nResults vary by wavelength<\/td>\nTest plan<\/td>\n<\/tr>\n
Port coverage<\/td>\nEvery output or approved sample<\/td>\nFinds weak channels<\/td>\nRaw port data<\/td>\n<\/tr>\n
\u0623\u062e\u0630 \u0627\u0644\u0639\u064a\u0646\u0627\u062a<\/td>\nLot, level and switching rule<\/td>\nControls inspection risk<\/td>\nSampling instruction<\/td>\n<\/tr>\n
Traceability<\/td>\nDevice, lot, instrument and date<\/td>\nSupports investigations<\/td>\nSerialized record<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

How to Control PLC splitter uniformity directivity PDL in the Project<\/h2>\n

\u062a\u0631\u0628\u0637 \u0639\u0646\u0627\u0635\u0631 \u0627\u0644\u062a\u062d\u0643\u0645 \u0623\u062f\u0646\u0627\u0647 \u0628\u064a\u0646 \u0627\u0644\u0631\u0633\u0645\u060c \u0648\u0627\u0644\u0639\u064a\u0646\u0629\u060c \u0648\u062f\u0641\u0639\u0629 \u0627\u0644\u0625\u0646\u062a\u0627\u062c\u060c \u0648\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629. \u0648\u0642\u062f \u0635\u064f\u0645\u0645\u062a \u0647\u0630\u0647 \u0627\u0644\u0639\u0646\u0627\u0635\u0631 \u0644\u062a\u0643\u0648\u0646 \u0639\u0645\u0644\u064a\u0629 \u0628\u0634\u0643\u0644 \u0645\u062a\u0639\u0645\u062f: \u0641\u0643\u0644 \u0645\u0646\u0647\u0627 \u064a\u064f\u0646\u0634\u0626 \u0633\u062c\u0644\u0627\u064b \u064a\u0645\u0643\u0646 \u0644\u0641\u0631\u0642 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a \u0648\u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0648\u0627\u0644\u0639\u0645\u0644 \u0627\u0644\u0645\u064a\u062f\u0627\u0646\u064a \u0645\u0631\u0627\u062c\u0639\u062a\u0647 \u0644\u0627\u062d\u0642\u064b\u0627.<\/p>\n

Keep parameters separate<\/h3>\n

Report insertion loss by port, calculate uniformity from the defined set, and record directivity and PDL under their specified methods. A pass label without the underlying fields is not auditable.<\/p>\n

Freeze methods before results<\/h3>\n

Agree wavelengths, launch, connectors, reference procedure and environmental condition in the purchase specification. Do not change a method after viewing a difficult lot.<\/p>\n

Use a declared sampling plan<\/h3>\n

Choose the sample size and acceptance rule from the relevant inspection system and contract. AQL is a process for lot disposition, not a promise that every untested unit meets the limit.<\/p>\n

Investigate patterns<\/h3>\n

Look for repeated weak port positions, package lots or connector types. Pattern review can find assembly or mapping problems that a simple pass count misses.<\/p>\n

\"Connectorized<\/figure>\n

\u0641\u062d\u0648\u0635\u0627\u062a \u0627\u0644\u0642\u0628\u0648\u0644 \u0648\u0627\u0644\u062a\u0633\u0644\u064a\u0645<\/h2>\n

\u064a\u062c\u0628 \u0627\u0644\u0627\u062a\u0641\u0627\u0642 \u0639\u0644\u0649 \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0648\u0627\u0644\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0642\u0628\u0644 \u0628\u062f\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631. \u0641\u0645\u0646 \u0627\u0644\u0635\u0639\u0628 \u0627\u0644\u0627\u0633\u062a\u0641\u0627\u062f\u0629 \u0645\u0646 \u0623\u064a \u0646\u062a\u064a\u062c\u0629 \u0644\u0627 \u064a\u0648\u062c\u062f \u0644\u0647\u0627 \u0645\u0633\u0624\u0648\u0644 \u0645\u062d\u062f\u062f \u0639\u0646 \u0627\u0644\u0633\u062c\u0644 \u0623\u0648 \u0625\u062c\u0631\u0627\u0621 \u0645\u062d\u062f\u062f \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0641\u0634\u0644\u060c \u0648\u0630\u0644\u0643 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0625\u0641\u0631\u0627\u062c \u0639\u0646 \u0627\u0644\u0634\u062d\u0646\u0629 \u0623\u0648 \u0628\u062f\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644.<\/p>\n\n\n\n\n\n\n\n\n\n
\u062a\u062d\u0642\u0642<\/th>\n\u0627\u0644\u0637\u0631\u064a\u0642\u0629<\/th>\n\u0627\u0644\u0633\u062c\u0644<\/th>\n\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0641\u0634\u0644<\/th>\n<\/tr>\n<\/thead>\n
\u0627\u0644\u0637\u0631\u064a\u0642\u0629<\/td>\nCompare procedure to specification<\/td>\nSigned setup<\/td>\nRetest with correct method<\/td>\n<\/tr>\n
Port data<\/td>\nReview every required channel<\/td>\nRaw table<\/td>\nQuarantine missing data<\/td>\n<\/tr>\n
Calculations<\/td>\nRecalculate uniformity and summaries<\/td>\nQA worksheet<\/td>\nCorrect report<\/td>\n<\/tr>\n
\u0623\u062e\u0630 \u0627\u0644\u0639\u064a\u0646\u0627\u062a<\/td>\nVerify lot and sample identities<\/td>\nSampling record<\/td>\nResample only by rule<\/td>\n<\/tr>\n
Disposition<\/td>\nRecord accept, reject or concession<\/td>\nDecision log<\/td>\nContain rejected lot<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"PLC<\/figure>\n

\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0627\u0644\u0627\u0633\u062a\u0646\u0627\u062f \u0625\u0644\u064a\u0647\u0627 \u0639\u0646\u062f \u0625\u0635\u062f\u0627\u0631 \u0623\u0645\u0631 \u0627\u0644\u0634\u0631\u0627\u0621<\/h2>\n

\u062a\u064f\u062f\u0631\u062c \u0634\u0631\u0643\u0629 \u0643\u0648\u0631\u0646\u064a\u0646\u063a \u062a\u0646\u0633\u064a\u0642\u0627\u062a \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0648\u0627\u0644\u0648\u062d\u062f\u0627\u062a \u0648\u0627\u0644\u0631\u0641\u0648\u0641\u060c \u0648\u062a\u062d\u062f\u062f \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062a\u0623\u0647\u064a\u0644 \u0648\u0641\u0642\u064b\u0627 \u0644\u0645\u0639\u064a\u0627\u0631 GR-1209\/1221 \u0644\u0645\u062c\u0645\u0648\u0639\u062a\u0647\u0627 \u0645\u0646 \u0645\u0642\u0633\u0645\u0627\u062a PLC. \u0627\u0646\u0638\u0631 \u0645\u0631\u062c\u0639 \u062a\u0623\u0647\u064a\u0644 \u0645\u0642\u0633\u0645\u0627\u062a \u0634\u0631\u0643\u0629 \u0643\u0648\u0631\u0646\u064a\u0646\u063a \u0628\u064a \u0625\u0644 \u0633\u064a<\/a>.<\/p>\n

The 2026 edition defines AQL-indexed lot-by-lot attribute-sampling schemes and switching rules. See ISO 2859-1:2026 AQL sampling standard<\/a>.<\/p>\n

ISO 28590 gives guidance on selecting an inspection system from the ISO 2859 family. See ISO 28590 acceptance-sampling overview<\/a>.<\/p>\n

Acceptance checklist<\/h2>\n

A useful splitter certificate connects defined parameters to raw port data, equipment, sample identity and a pre-agreed lot decision. Keep all of those records under the same part revision.<\/p>\n