IHSE USA 434 Series SD- VUE/5x - Manual (Page 24)

22 SD-VUE USB Mini Extender Range
General Questions
The green power LED is not lit when I connect my Local Unit to my USB
hub.
Local Units normally take power from the USB connection to the
computer. Local Units may require an external 5V PSU:
- If the CPU/hub cannot provide sufficient power through the USB
connection.
- For video only applications.
Contact Technical Support for details of a suitable PSU.
Is it possible to use a cable length longer than 50m?
The maximum extension distance is nominally 50m. Some systems may
extend up to 60m and others only 40m. Once the system range limit is
reached, USB operation will cease or become erratic. For maximum
extension distance, avoid connecting additional USB hubs to the system.
Which interconnection cable is best?
The extender will operate with either shielded (STP/FTP) or unshielded
(UTP) CATx cable. However, correctly installed shielded cable is
preferred, especially in electrically noisy environments, because it
resists interference more strongly, limits ground potential differences,
and reduces emissions. To benefit from shielded cable the shield
connection must be maintained from end to end through any intervening
patch cables, panels and RJ45 connectors.
Please note that shielded cable is advised in order to maintain
regulatory EMC compliance.
Can I use CATx patch cables?
Yes, but to ensure maximum data integrity, use as few as possible. The
maximum patch cable length at each end of the link should be limited to
3m.
Can the extender system be used between buildings?
No. Ground loops could damage the extender system and attached
equipment.