Telecommunications & Network Hardware Manufacturing worked example

Network Switch Test Capacity at 99% test-rack uptime: a worked example

What does the result look like when test-rack uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when network switch test capacity in telecommunications and network hardware manufacturing is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Switch ports or DUTs tested per rack cycle: 4 units / cycle (unchanged)
  • Available switch-test rack cycles in the period: 480 cycles (unchanged)
  • Test-rack uptime (excludes downtime/changeover): 99 % (raised for this scenario; the documented default is 90)
  • Switch functional first-pass yield: 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross network switch test capacity = network switch test capacity output per cycle × available network switch test capacity cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 units for good network switch test capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 units for gross network switch test capacity.
  • At this operating point the engine returns 19.2 units for network switch test capacity downtime loss.
  • At this operating point the engine returns 57.02 units for network switch test capacity yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where test-rack uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
  • A figure at this level is achievable when test-rack uptime is genuinely sustained, not just peaked for a shift. It uses first-pass yield only; units that pass on retest are not credited, so plants with heavy rework recovery will see actual shippable output above this figure.

Results at a glance

  • Good network switch test capacity: 1,844 units (headline result)
  • Gross network switch test capacity: 1,920 units
  • Network switch test capacity downtime loss: 19.2 units
  • Network switch test capacity yield loss: 57.02 units

Run it with your numbers

  • Every input above is editable in the live Network Switch Test Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.