UPC or APC? — endface polish comparison

Scope and location

Endface geometry and direct physical mating only. No general return-loss values, color-based classification, or rule for non-contact optical-instrument inputs.

Published 2014-08-14; endface geometry and direct-mating warning paragraphs.

Open the original source

Inspected

2026-10-11

Access

public page

Recorded AI-assisted source inspection; not independent human approval or hardware testing.

Endface geometry and direct physical mating only. No general return-loss values, color-based classification, or rule for non-contact optical-instrument inputs.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.