Ross 4500DR-104-07, User Manual, Page: 66 / 161

66 • Front Panel Menu System SRG-4500 User Guide (v7.0)
If set to User Defined, then the Video and LTC menu times will automatically adjust at the times and dates set in the
Summer DST Event and Winter DST Event menus. Once a spring event is completed, the year of the programmed
event is changed to 2035 so that it will never repeat. Once the autumn event is completed, the year of the
programmed event is changed to 2035 so that it will never repeat, and the Daylight Saving mode is also set to Off.
To program the next pair of events, set the mode to User Defined, and then enter the next pair of times and dates in
the Summer DST Event and Winter DST Event menus.
When this field is set to Automatic, the Summer DST Event and Winter DST Event menus are immediately updated
to be ready for the next two events based on the current time and date, and the previously configured Country Code.
While set to Automatic, as each DST Event occurs, it is updated to be ready for the following year.
Countries not supported in Automatic mode should implement DST on a year by year basis using semi-automatic
support, i.e. using the User Defined mode above.
The fully- and semi-automated DST support requires the operator to enter location information. A Country Code is
mandatory to correctly index the required DST information. For Australia, Brazil, Canada and United States of
America, you will also be required to enter a State Code, as different states may or may not implement DST.
 Whenever the Country Code field is adjusted, the Daylight Saving mode always defaults back to User Defined.
The user then decides whether to implement daylight saving automatically, or to enter dates and times manually
Even if you don't implement DST, it is still useful to enter your country code, as this informs the SRG-4500 of its
location in either the Northern or Southern hemisphere. The menus adjust to the location information. The Country
Code and State Code definitions are detailed below.
Country Code, Description
This menu item allows the user to adjust the Country Code to suit the actual location of the SRG-4500. This should
be adjusted before selecting the Daylight Saving mode.
The options for the Country Code are from
ISO 3166-1 Numeric Code .
The description field displays the ISO 3166-1 English short name.
If you select Daylight Saving to Automatic after setting Country Code = nnn (where nnn is a country code that has
automatic DST support), then the summer and winter times and dates will be automatically updated in the DST
menus.
The SRG-4500 does NOT support this automatic filling of the times and dates for all country codes.
If the selected Country has multiple states that are defined to have differing Daylight Saving criteria, and the
SRG-4500 has support for these countries, then the menu items in the following paragraph become available.
StateCode, Description
This menu pair allows the user to set the geographical State Code of the SRG-4500, but they only appear in the
menu when the preceding menu option regarding Country Code is set for a country that has multiple states defined
as having differing Daylight Saving criteria.
Some countries span more than one time zone, and in these countries, state codes are useful in defining summer
daylight saving time behavior.
The options in the field for the state code are from
ISO 3166-2 .
The description field displays the ISO 3166-2 Subdivision name.
GPS DateTime (UTC)
The menu for GPS DateTime (UTC) is for information only - there are no editable fields. When a GPS solution has
been found, the current time and date are displayed as received from GPS. G
If the GPS option is enabled, the menu reports whether a solution is being searched for.