Define the full numeric range and units
Specify the approved values, decimal positions and unit presentation from the device design. Check every permitted combination, especially the longest reading and simultaneous warning states.
- Value range and decimal map
- Unit size and location
- Readability at the real viewing distance
Use a controlled icon and message map
A segment layout is efficient for fixed states, but an omitted symbol can require a glass-artwork change. Document error, strip, battery, memory and timing states only where they exist in the approved product UI.
- Complete icon matrix
- All-segments and blank-display tests
- Startup and fault-state review
Review low-power and environmental behavior
Set the driver waveform, contact structure and backlight choice against the host supply and expected use. Validate contrast, response and the complete front assembly at the OEM's operating conditions.
- Duty, bias, voltage and pin mapping
- Battery and backlight duty
- Sample approval in the real enclosure