200
Alvium USB Cameras User Guide V3.3.0
Performance and troubleshooting
Cascading hubs divide bandwidth
The following example applies to standard behavior without individual settings.
The graphics show bandwidth distribution on a common bus. Three cameras try to
use full bandwidth at the same time. If one camera is inactive, the host will provide
its share to the others until this camera sends data again.
Troubleshooting common issues
This section is about unexpected events with the operation of Alvium USB
cameras. The events are ordered from general to detail:
•
•
•
•
Each entry consists of:
•
Observed unwanted event, numbered for easier handling
•
Short description of the solution
•
Step-by-step instructions to resolve the issue.
Figure 83: Bandwidth assignment for cascading hubs
Hardware installation
For background information, see
Host
adapter
card
Hub 01
Hub 02
Camera 01
Camera 02
Camera 03
100%
50%
50%
25%
25%