Measurement, Test & Control Equipment worked example

Firmware Load Time at 9.2% retry and recovery allowance: a worked example

This scenario runs the firmware load time calculation on the strong side: 9.2% retry and recovery allowance, with every other input held at its documented default. Use when planning production test station capacity that includes firmware programming, estimating how firmware load adds to test cycle time, or scheduling batch firmware updates.

The inputs for this scenario

  • Units to program: 200 units (unchanged)
  • Firmware load time per unit: 2.5 min / unit (unchanged)
  • Retry and recovery allowance: 9.2 % (raised for this scenario; the documented default is 8)

Working through the calculation

  • Applying the documented formula (Base firmware time = units to program x firmware load time per unit) to the inputs above produces each figure below.
  • At this operating point the engine returns 87.36 hr for total firmware load time (hours), the number this scenario is built around.
  • At this operating point the engine returns 80 hr for base firmware time (hours).
  • At this operating point the engine returns 9.2 % for retry and recovery time (hours).
  • At this operating point the engine returns 2.5 pieces / min for programming rate (units/min).

How this compares with the baseline

  • Against the tool's baseline example, where retry and recovery allowance sits at 8% and the headline result is 86.4 hr, this scenario comes in 1.11% above the baseline at 87.36 hr.
  • Use it when planning a programming station's workload for a build, quoting a contract-manufacturing flashing job, or deciding how many programmer fixtures you need to clear a backlog. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total firmware load time (hours): 87.36 hr (headline result)
  • Base firmware time (hours): 80 hr
  • Retry and recovery time (hours): 9.2 %
  • Programming rate (units/min): 2.5 pieces / min

Run it with your numbers

  • Every input above is editable in the live Firmware Load Time calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.