[SBE] SAGE Endec

[Alan Kilgore]

EAS signals all use UTC to cross time zones without equipment 
confusion. The device converts to local time for the display and printer.

You would have had it correct if you left off step 2.

You do *not* change the time.

The internal clock is actually keeping time in UTC, not the local 
time. If you change the time (hour) instead of (or even in 
combination with) the UTC offset (correct for either EST or EDT) then 
you are changing the internal UTC clock. You should only have to "set 
the clock" to keep the seconds in synch due to clock drift. DST 
shifts should all be made only by changing the UTC offset.


Alan Kilgore, CPBE
WRVM 102.7 FM
work phone 920-842-2900
FAX-to-email# 623-321-7176  (available anywhere)
ham callsign WB4THU
station web: http://www.wrvm.org/
personal web site: http://www.ez-net.com/~alankilgore/

At 02:19 PM 3/1/2007, you wrote:

>We only have one SAGE box to update and we plan to update it manually at

>1:59:59 AM ;-) the morning of March 11th.

>

>As I understand the procedure:

>

>1. Turn DST observance off (this can be done anytime)

>

>2. Set the time forward one hour.

>

>3. Set the UTC offset back one hour. Or to 4 hours (was 5) because we

>are eastern time zone.

>

>Does anyone else interpret this differently?

>

>Pat

>

>__________________________

>Patrick A. Thompson

>assistant CE WBIR-TV 10

>

>pthompson at wbir.gannett.com