USB (Universal Serial Bus) is a widely adopted standard for data transmission and power supply between computers, peripherals, and embedded devices. It is essential in testing environments, electronic production, laboratories, and industrial automation, thanks to its versatility, plug-and-play, and version compatibility.
USB connects more than data — it connects robustness, power, and control.
🔍 Main technical features of USB
| Version | Theoretical Speed | Connector Type | Power Supply |
|---|---|---|---|
| USB 1.1 | 12 Mbps | Type A / B | Up to 2.5 W |
| USB 2.0 | 480 Mbps | Type A / B / Mini / Micro | Up to 2.5 W (5V/0.5A) |
| USB 3.0 | 5 Gbps | Type A / B / Micro-B | Up to 4.5 W (5V/0.9A) |
| USB 3.1 | 10 Gbps | Type C | Up to 100 W (with Power Delivery) |
| USB 3.2 | 20 Gbps | Type C | Up to 100 W |
| USB4 | 40 Gbps | Type C | Up to 240 W (USB PD 3.1) |
🧪 USB applications in testing environments
- USB data transfer tests (read, write, speed)
- Verification of enumeration and power negotiation (VBUS, USB PD)
- Validation of firmware and serial interfaces via USB-C, USB-Micro
- Power tests, overvoltage, and ESD protection
- Compatibility analysis with different versions (USB 2.0/3.0/3.1)
⚙️ How AJOLLY Testing tests and validates USB interfaces
AJOLLY Testing designs and implements test benches and USB validation tools aimed at production and development, focusing on reliability, traceability, and automation.
🛠️ USB testing infrastructure
- Simulation of USB hosts and devices with protocol control
- Monitoring of enumeration, VID/PID, current consumption, and response time
- Packet capture for data integrity analysis
📊 Automation and documentation
- Automatic logging by serial number, firmware, and revision
- Repetitive tests with logs and export to reports (CSV, PDF, database)
- Integration with TestStand, LabVIEW, MES, and dashboards Power BI
⚡ Electrical and safety tests
- Monitoring of VBUS, overcurrent protection
- Power delivery validation according to USB PD
- Tests with load simulators and voltage/current measurement
With AJOLLY Testing, your USB interface is more than functional — it is validated, traceable, and ready for industrial use with reliability.