Make three readings unambiguous

Allocate digit height, labels and visual order for the actual viewing distance. If the display includes systolic, diastolic and pulse values, confirm that no icon or decimal can be mistaken for another measurement in every valid state.

  • Maximum and minimum displayed values
  • Unit and decimal conventions
  • Viewing position, contrast and front-lens reflection

Validate warnings and power states

The approved device UI determines whether the glass needs irregular-heartbeat, cuff, low-battery, memory or error symbols. Every required state belongs in the artwork before tooling, including simultaneous and all-segments patterns.

  • Approved icon set and combinations
  • Startup, low-power and error behavior
  • Backlight duty and battery budget

Match glass drive to the host

Confirm duty, bias, frame rate, RMS drive voltage, COM/SEG mapping and contact method with the actual controller. A visually similar LCD may not be electrically compatible with an existing blood pressure monitor PCB.

  • Driver and waveform information
  • Pin map, connector and mechanical outline
  • Sample testing in the final device