Micromod Micro-PWC: 53PW6000 MicroPWC Installation and Setup Manual - Manual (Page 58)

Micro-PWC
™ Installation & Setup Guide
48 Start-up and Operation
4.6.2.2 Daylight Saving Time
The Daylight Saving Time adjustment is also controlled from the Date/Time window discussed in Section
4.6.2.1 . If the Automatically Adjust for Daylight Saving Time option in the Date/Time window is selected,
the US Daylight Saving Time rule (first Sunday in April to last Sunday in October) will be used when con-
verting GMT to local time.
This rule may not be correct in all time zones. If there is a difference in the rule governing Daylight Saving
Time at your location, DO NOT change the local time on the Micro-PWC system (this would change the
GMT and violate the rule of the common GMT). Instead, on the first day of Daylight Saving Time, manually
select the button labelled Automatically Adjust for Daylight Saving Time. De-select this item on the first day
after Daylight Saving Time ends.
4.6.3 Time Adjustment
All Micro-PWC system applications assume a monotonical (always increasing) GMT time value. Manual
adjustments to the local Micro-PWC system time can violate this assumption, and can also de-synchronize
the network time. For these reasons, the Micro-PWC Time Adjustment feature should always be used
when the time needs to be adjusted.
If time adjustment is needed, use this procedure:
1. Shut down all nodes except for one.
2. Stop the Micro-PWC system applications and servers on this node.
3. Change the time setting. Use the U P or D OWN arrows to the right of the Adjustment box to select
the desired number of seconds to adjust the time. If you are setting the time back, wait an
interval at least equivalent to the value of the adjustment before proceeding. (For example, if
you are setting the time back 5 minutes, wait 5 minutes before proceeding.)
4. Restart the node and verify that the time is correct.
5. Start the other nodes on the network.
Figure 4-2. Time Adjustment Window