Fiber Optic Cable & Photonic Interconnects calculator

Test Station Capacity Calculator

Optical test capacity is often limited by fixture loading, wavelength setup, reference checks, data capture, and retests. This calculator converts station cycles, uptime, and first-pass yield into realistic good assemblies per shift or lot.

What this calculator does

  • Estimate good optical test station output from assemblies per cycle, available test cycles, station uptime, and first-pass test yield.
  • Use it when checking capacity for insertion loss, return loss, polarity, continuity, interferometry, or transceiver optical test stations.
  • Estimates good output capacity for optical test stations after uptime and first-pass yield losses.

Formula used

  • Gross optical test capacity = assemblies tested per cycle × available optical test cycles
  • Good optical test capacity = gross capacity × station uptime × first-pass optical test yield

Inputs explained

  • Assemblies tested per cycle: Use the number of patch cords, ports, modules, or channels completed each test cycle.
  • Available optical test cycles: Enter planned cycles from the shift schedule, tester program, or takt plan.
  • Optical test station uptime: Account for reference checks, fixture changes, instrument warm-up, software issues, and maintenance.
  • First-pass optical test yield: Use the share expected to pass without retest, cleaning, polarity correction, or data-record repair.

How to use the result

  • Use it for tester loading, shift planning, quote capacity, fixture purchases, and deciding whether retest load will block shipments.
  • It assumes the cycle definition is consistent; separate insertion-loss, return-loss, polarity, continuity, and interferometer tests if they use different stations or cycle times.

Common questions

  • What is a test cycle? A cycle is one complete load-test-unload sequence for the station, fixture, or program being evaluated.
  • What should station uptime include? Include practical availability after reference checks, instrument warm-up, fixture swaps, software issues, maintenance, and operator delays.
  • Should retests be included in yield? Yes. Lower first-pass yield if cleaning, reconnection, polarity correction, or data issues commonly require retest.
  • What decision does this support? Use good capacity to decide whether one tester can cover demand or whether more fixtures, shifts, or instruments are needed.

Last reviewed 2026-05-12.