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Enable real time clock backup
Figure 6-6: Battery and switch
Legend – S1 Security switch
1
2
The lithium battery maintains operation of the real time clock. The lithium
battery backup jumper (J13) is located near the lithium battery slot. The
two settings are:
1.
Enable – Jumper settings 1-2. The lithium battery backs up the real
time clock. If power is lost or disconnected, the real time clock
continues to operate until depletion of the lithium battery.
2.
Disable – Jumper settings 2-3. The lithium battery does not back up
the real time clock. The real time clock will continue to operate for
24-36 hours under typical conditions. The real time clock will stop
operation and lose time without power. At the next startup the
system will restore the last known good time which can be one of the
following:
a.
Last Totalflow Running Time: Last time Totalflow was running
or when the power was lost. This is the time most often used.
b.
OS Build Time: In case Last Totalflow Running Time could not
be retrieved, the build time of the OS will be used as the last
known good time.
If system time is lost, the system and event logs will display the following
messages:
System Log: "System time was lost, so restoring the last known time."
Event Log in Tube: "System Time Lost."
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1
Battery
Security switch
2 1 0 60 01M NAA | XSER IE S G5 S TART UP G UI DE | 4 5
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