Monitor; Monitor:) Status; Monitor:) Sw-Alarm - Comtech EF Data CRS-311 Installation And Operation Manual

CRS-311 1:1 Redundancy Switch
Front Panel Operation

5.2.4 MONITOR

MONITOR: STATUS
STORED-EVENTS
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:
The restore holdoff time displays on the second line if Auto Mode is ON.
5.2.4.2

(MONITOR:) SW-ALARM

SWITCH ALARM:
This Switch Alarm screen example shows that there are no faults; accordingly, the front panel
"Unit Status" LED indicator is lit GREEN.
SWITCH ALARM:
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;
SW-ALARM
COMMS IO
05 SEC
NONE
-12V PS-B
5–13
Revision 7
MN/CRS311.IOM