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3.5.2 Daylight Saving Time Calculation
After unlocking the keyboard, navigate to Menu “
5 Settings
” and then
“
52 DST Calculation
” using the arrow- or number-buttons as described in chapter
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With the button
>
>
>
>
, the cursor moves to the right and the buttons
^
^
^
^
and
v
v
v
v
allow you
to select the desired Daylight Saving switching time calculation.
The user can select to use a formula to calculate the switching times or he can use
fixed dates for the switching times. The default setting is to use the formula with the
settings defined in the EU directive 2000/84/EG and the supplementary notes
2001/C 35/07und 2006/C 61/02.
Display:
52 DST Calculation
> Formula
Fixed Date
By pressing the button
e
e
e
e
the user can edit the parameters for the DST calculation
with formula or fixed date.
Formula:
The formula below defines the switching time as:
DST starts on the last Sunday (first from end of month) in March at 02:00 a.m. CET.
Display:
DST on 03 02 So E 1
DST on
DST start
DST off
DST end
03
month (1…12)
02
hour of DST switch (00…23)
So
day of week of DST switch (Mo…So)
E
count day of week from start of month
S
count day of week from end of month
1
week of month (1…5)
Fixed Date:
The parameters below define the following switching time:
DST starts on March 31
st
at 02:00 a.m. CET.
Display:
> DST on 31.03. 02
DST on
DST start
DST off
DST end
31.
day of month (1…31)
03.
month (1…12)
02
hour of DST switch (00…23)
Everything is stored by pressing the button
e
e
e
e
and changes are discarded with the
button
<
<
<
<
or
c.
c.
c.
c.
If anything was changed you have to confirm your entry again by
pressing the
e
e
e
e
button after the query “
Save?
” is displayed. However if the changes
shall be discarded you have to press the
c
c
c
c
button.
