Real-Time Performance
Latency Map for Class II Vital Signs Monitors
A structured walkthrough for tracing interrupt storms and DMA contention on ARM Cortex-M pipelines used in bedside monitors.
₩12,400,000 · 3-week desk review window
Overview
This brief translates field notes from recent engagements into a repeatable measurement script, a prioritized checklist, and a reviewer-ready appendix for hardware-in-the-loop benches. It focuses on deterministic sampling, not generic tuning slogans.
What is inside
- Trace capture templates aligned to IEC 60601-1-8 alarm latency expectations
- RTOS priority ceiling worksheet with worked examples
- Flash wait-state sweep procedure for external QSPI code banks
- Bus matrix annotation kit for spreadsheet handoff to layout partners
- Thermal throttling guardrails for sealed enclosures
- Post-build binary diff hints for unexpected padding growth
- Handover script for night-shift validation teams
Outcomes
- Clearer ownership of measurement artifacts across firmware and QA
- Reduced duplicate bench runs during design reviews
- Faster agreement on which traces belong in the submission binder
Responsible editor
Haneul Park
Embedded lead with a decade on signal chains for wearable and bedside monitors.
FAQ
No. It sharpens firmware evidence packs; systems engineering and risk files remain your responsibility.
Field notes
The DMA chapter finally gave our QA lead the same vocabulary our silicon vendor uses on calls.
Still wish the thermal section had one more fan-off corner case, but the measurement script saved a sprint.