Model 8084, 8084AD and 8085 Closed Caption Encoders
Manual Change Sheet 1.3-1
Date of Issue: July 26, 2002
Page 2 of 6
Copyright Evertz Microsystems Ltd. All rights reserved
2.3. Setting the Time Zone
When you enter the time zone setting stage the front panel display shows the local time zone offset
from UTC. E.g.
Time zone = 05.
The number shown is the number or hours between the
standard
time
in the local time zone and UTC. For users in time zones west of Greenwich this number will be
between 1 and 12. For users in time zones east of Greenwich, this number will be between 13 and 23.
(E.g. for Eastern Time set the time zone to 05) Press the
"
or
#
keys to change the time zone. When
you have entered the correct local time Zone offset from UTC press the
SELECT
key to move on to
setting the Daylight Saving time observance.
2.4. Setting the Daylight Saving Time Observance
The Front panel display shows the whether Daylight saving time is observed in your region.
E.g.
DST Observed = On.
Press the
"
or
#
keys to select the correct setting for your region. When you
have entered the correct setting press the
SELECT
key to complete setting the UTC Clock in the
encoder. The front panel display will show
CLOCK UPDATED
when the internal clock has been
updated successfully. You will automatically exit the menu system and the front panel should show the
new time and date settings after a few seconds.
3.
DAYLIGHT SAVING TIME ADJUSTMENT
Daylight Saving Time (DST) was instituted to take advantage of the later hours of daylight between April
and October. In 1966, the U.S. Congress passed the Uniform Time Act that standardized the length of
Daylight Saving Time. For those parts of the United States that observe Daylight Saving Time, it begins
at 2 a.m. local time on the first Sunday of April. Time reverts to standard time at 2 a.m. local time on the
last Sunday of October. In the spring clocks
spring
forward by 1 hour to 3 a.m.; in the fall clocks
fall
back by 1 hour to 1 a.m. Arizona, Hawaii and most of Indiana have chosen not to observe Daylight
Saving Time.
People often consider daylight saving time to be an “event” that happens twice a year, setting their
clocks ahead or back by one hour. In reality, DST is
in effect
(ON) for six months of the year and
not in
effect
(OFF) for the other six months, in regions that observe DST.
Starting with firmware revision R020527, the encoders will automatically switch their local time to
Daylight Saving time at 2 a.m. local time on the first Sunday of April, and back to standard time at 2
a.m. local time on the last Sunday of October. A new control
DST Observed
has been added that
allows the user to enable or disable the DST adjustment of the local encoder time (the DSO flag). For
regions that observe Daylight saving time, the
DST Observed
setting must be set to On, and for regions
that do not observe Daylight saving time, the
DST Observed
setting must be set to Off. Regardless of
whether DST is observed in a region, DST will be
In effect
between the first Sunday of April and the last
Sunday of October. (The DST flag)
The front panel time display shows the status of the DST and DSO flags as shown in Figure 1.
