User manual

Digital BUS-WATCH
®
HDx00
Page 48 of 93
Radio Engineering Industries, Inc.
640430 -- Rev A -- 9/7/2012
Day Light Savings Time, when set to On-Auto, will make the system clock
change automatically with Daylight Saving Time. If your region does not use
Daylight Saving Time, setting this item to OFF disables the Daylight Saving Time
function.
Day Light Savings Time can be changed from Auto to Custom. The Energy
Policy Act of 2005 changed the time change dates for Daylight Saving Time in
the U.S. DST begins on the second Sunday of March and ends the first Sunday of
November. Because Congress retains the right to revert Daylight Saving Time
back to the 1986 time schedule, certain real-time clock embedded systems need to
have the ability to be changed. The DST Mode can be set from ‘On-Auto’ to ‘On-
Manual’. When the DST Mode is set to ‘On-Auto’, the Daylight Saving Time
triggers will conform to the EPA of ’05 rules. When the DST Mode is set to ‘On-
Manual’, the Daylight Saving Time triggers can be changed to any of the first,
second, third, fourth, or last week of any month, not overlapping, as shown below.
Figure 32: Custom DST Triggers