1200DD Series Digital Data Display Manual
Revision 1.8
1200DD - 3-11
3.4.6.3.
Setting the Beginning and End of Daylight Saving Time
The four
DST start
registers (
SH, SD, SM, SW)
set the DST beginning time and the four
DST end
registers (
EH, ED, EM, EW)
set the DST end time. For the sake of simplicity only the
DST start
registers
will be described, although they both operate in the same way.
DZ
With this menu item, you can set the start Month for Daylight Saving Time.
The range is 1 to 12, representing January to December.
EN 10M is the default for EM.
SM
ST 1M
ST 2M
ST 3M
ST 4M
…
ST 12M
DZ
With this menu item, you can set the start week for Daylight Saving Time.
This menu item is only valid if DST Date Entry Mode is 7.
When set to 1, then the first week of the month is selected.
When set to 2, then the second week of the month is selected.
When set to 3, then the third week of the month is selected.
When set to 4, then the fourth week of the month is selected.
When set to LST, then the last week of the month is selected.
EN LST is the default for EW.
SW
ST 1
ST 2
ST 3
ST 4
ST LST
DZ
With this menu item, you can set the start day for Daylight Saving Time.
If DST Date Entry Mode is 7, then the range is 1 to 7, representing Sunday
to Saturday.
If DST Date Entry Mode is 30, then the range is 1 to 31 representing the
day of the month. The range is reduced to 28 if starting month is February,
and 30 if the Month is April, June, September and November.
SD
ST 1D
ST 2D
…
DZ
With this menu item, you can set the start hour for Daylight Saving Time.
The units are hours. 0H is midnight, 1H is 1AM etc.
SH
ST 0H
ST 1H
ST 2H
…
ST 23H
3.4.6.4.
Setting the DST Offset
DZ
This menu item allows the user to set the amount of adjustment to be
made when DST is active.
When set to 1, one hour is added to the time display.
When set to 2, two hours are added to the time display.
OF
DST 1H
DST 2H