Comtech EF Data CRS-311, Installation And Operation Manual

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CRS-311 1:1 Redundancy Switch Revision 7
Front Panel Operation MN/CRS311.IOM
5–13
5.2.4 MONITOR
MONITOR: STATUS SW-ALARM
STORED-EVENTS COMMS IO
Use the
◄►
arrow keys to select STATUS , SW ‐ ALARM , STORED ‐ EVENTS , COMMs (COMM ‐
STATE), or IO , and then press ENTER .
5.2.4.1 (MONITOR:) STATUS
TRAFFIC MODEM IS ONLINE.
BACKUP HOLDOFF: 05 SEC
This submenu displays the Switch status as follows:
•
If Auto Mode is ON , it will also show the backup holdoff time should the bridged Traffic
Modem fail.
•
If Auto Mode is OFF , the second line displays “ OFF ”. Once the Switch takes the Traffic
Modem offline and replaces it with the Redundant Modem – whether manually or
automatically – the screen changes as follows:
REDUNDANT IS ONLINE.
RESTORE HOLDOFF: 05 SEC
The restore holdoff time displays on the second line if Auto Mode is ON .
5.2.4.2 (MONITOR:) SW-ALARM
SWITCH ALARM: NONE
This Switch Alarm screen example shows that there are no faults ; accordingly, the front panel
“ Unit Status ” LED indicator is lit GREEN .
SWITCH ALARM: -12V PS-B
Ë
IS UNDERVOLTAGE
This Switch Alarm screen example shows that there is a fault – Power Supply “B” is under voltage;
accordingly, the front panel “ Unit Status ” LED indicator is lit RED .
Suggested corrective actions include:
•
Ensure power supply power cord is connected and the power switch is ON;