Four-layer electronic blood-pressure monitor parameters
| Parameter | Design value or function |
|---|---|
| Measurement method | Oscillometric measurement |
| Measurement cycle | Measurement during cuff inflation |
| Pressure measurement range | 0–299 mmHg (0–39.9 kPa) |
| Pressure accuracy | Within ±3 mmHg (±0.4 kPa) |
| Pressure units | mmHg / kPa |
| Pulse range | 40–200 beats per minute |
| Pulse accuracy | ±5% |
| Display | Digital LCD |
| Power supply | Built-in lithium battery; a dry-cell version can be developed for a custom model |
| History storage | 100 measurement groups |
Processor and memory architecture
| Item | Architecture |
|---|---|
| Processor | High-performance 32-bit RISC processor |
| Development | CPU support for a dedicated C-code compiler |
| Operating frequency | 120 MHz |
| Cache | 16 kB high-performance cache |
| SPI flash controller | Serial flash controller (SFC), supporting 1-, 2- and 4-data-line operation |
| Interrupts | 64 vectored interrupts |
| Interrupt priority | 4 levels |
Measurement and operating features
The electronic blood-pressure-monitor solution combines measurement, voice announcement of results and a large display for clearer reading. The measurement algorithm is described around extensive clinical testing and stable operation.
- One-button measurement and straightforward operation
- Stable operation and environmentally conscious material selection
- Built-in background music for a more relaxed measurement experience
- Switchable pressure units
- Automatic power-off after one minute without an operation
- Low-voltage warning
- Fault detection
Design and manufacturing capabilities
| Capability | Service range or option |
|---|---|
| Design layer range | 1–32 layers |
| Minimum conductor width / spacing | 3 mil |
| Minimum laser-drilled hole | 4 mil |
| Minimum mechanically drilled hole | 8 mil |
| Copper foil thickness | 18–175 µm; standard values: 18, 35 and 70 µm |
| Peel strength | 1.25 N/mm |
| Minimum punched hole, single-sided board | 0.9 mm / 35 mil |
| Minimum hole diameter | 0.25 mm / 10 mil |
| Hole-diameter tolerance for holes ≤0.8 mm | ±0.05 mm |
| Hole-diameter tolerance | ±0.05 mm |
| Hole-wall copper, double-sided / multilayer | ≥0.8 mil |
| Via resistance, double-sided / multilayer | ≤300 µΩ |
| Minimum line width | 0.127 mm / 5 mil |
| Minimum line spacing | 0.127 mm / 5 mil |
| Silkscreen colors | Black, white, red, green and other colors |
| Surface finish options | Leaded / lead-free HASL, ENIG, silver and OSP |
| Service | OEM service |
| Standards and compliance references | ISO 9001, RoHS and UL |
