US Utah-400, Setup And Operation, Page: 123 / 157

144x144 Router
5-9
Control Panel Troubleshooting
Control Panel Troubleshooting
If your control panel does not control any of the matrix, check that power is applied to the
panel.
UNET Panels
•
Panels communicate to the controller by a special network known as U-Net. Panels are
connected together daisy chain style to the controller. Removing a panel physically from
the network will break the chain and disconnect panels downstream from the controller.
•
U-Net uses unshielded twisted pair cable. It requires two twisted pairs terminated in an RJ
45 connector. The maximum length of any segment is 1000 feet and must be terminated at
the last control panel in each segment. Refer to the Appendix C "U-Net Cabling" for details.
•
The panel may be communicating to the controller correctly, but the required signal level
matrix may not be responding. Check the Dipswitch setting on the rear panel of the non-
functional router level.
Confirm that the control panel address is a unique number. Each panel address
is set by a rear panel Dipswitch and must be a unique address. This control
panel address is read when the control panel is powered up.
Ethernet Panels
•
Panels should be connected to the same network as the SC-3/4 controller.
•
There should be a network hub between a panel and the SC-3/4 controller.
•
Unique IP addresses.
•
CAT-5 cable lengths should be less than 100 meters.