What distinguishes USB 3.0 (USB3 Vision) as an interface?
Its numerous advantages make USB 3.0 a highly attractive interface for many applications:
- High net data rates of up to 380MB/s
- Low CPU load – Image Preprocessing via FPGA as in Basler ace USB 3.0 saves resources for software and the actual image processing
- With Plug & Play, the software can easily detect the camera and allows for flexible use with varying host PCs
- Low latency and jitter times
- Standardized and tested accessories from host adapters to cables and hubs
- Standardized, protocol- and event-based communication between camera and software
- Standardized camera control via GenICam 2.0
| USB 2.0 | USB 3.0 | |
|---|---|---|
| Net Data Rate | Up to 40MB/s | Up to 380MB/s |
| Communication Host-to Camera | Polling | Asynchronous notifications |
| Error Management | Protocol Layer only | Link and Protocol Layer |
| Power Supply | Up to 2.5W at 5V and 500mA | Up to 4.5W at 5V and 900mA |
| Power Management | Low-power state modes controlled by Host only | Low-power state modes controlled by Camera and Host. Guaranteed latency tolerances. |
| Cable Type | One "unshielded twisted pair" for data exchange | Two "shielded twisted pairs" for data exchange |
| Cable Length | Up to 5m passive | Up to 8m passive |
| Zero Copy / Direct Memory access | Yes | Yes |
| Data Package with Bulk Transfer | 512 Byte | 1 Kbyte |
| CPU Load per Mbyte | Medium | Very Low |