Overview

The SCU-XPT switchcard manages the automatic switchover from one GPS clock to the other in redundant systems. If clock 1 looses synchronization or fails, the SCU-XPT module automatically switches over to clock 2, which then will be the so-called “Master Clock” until it fails also (only in this case the system switches back to clock 1 if it restored synchronization).
By using this functionality, technical problems and reception failures can be handled in a secure way. It is possible to connect two separate GPS antenna units to the redundant system, but a GPS antenna distributor like our GPSAV4 can be used to distribute the signals from one antenna two both involved GPS clocks (if redundancy for the antenna is not desired/needed).

With the Meinberg software GPSMON32 it is possible to change configurations or to inquire the status information of the switchcard or both GPS receivers. The necessary network parameters (IP address, netmask, default gateway) can be set via network (automatically by DHCP or manually using TELNET or our GPSMON32 software).

The status of the switchcard and the two GPS clocks can be monitored using SNMP as well. SNMP-traps and/or syslog messages are sent out if a status change occurs, if this is configured.