Constellation® January 2006
4-16 Technical Specifications
Manual Switch-over
A control capability is provided to switch the main and standby Transmitters or
Receivers to lock-on main or lock-on standby. Manual locking of a protected
Transmitter or Receiver is reported as a minor alarm. Manual Receiver
switching has no effect on traffic.
1+1 Switching Times
The average recovery time for switching caused by hardware failures in a
protected system is 60 ms or less, except for 16T high gain at 130 ms or less, and
28 T high gain at 100 ms or less.
For temporary signal interruptions of 1 to 2 seconds duration, no more than 5%
of recovery times will exceed 0.5 second.
Supervisory Interfaces
Network Management Interface
* Inverted mark/space polarity.
Table 4-7: Network management interface
Port Signal Application
FSCAN RS-232 async FarScan computer connection
Monitor RS-232 async SCAN interconnection
VersaT1lity RS-232 async or RS-423*
async
SCAN interconnection
Keypad RS232 async Hand-held Keypad connection
Aux RS-422 sync Constellation Radio interconnection
Spur RS-422 sync Constellation Radio interconnection
Ethernet 10Base-T SNMP
To Next Page
Loading...
