Ross 4500DR-104-07, User Manual, Page: 65 / 161

SRG-4500 User Guide (v7.0) Front Panel Menu System • 65
Fixed by GPS = 00:00:00:00
or
Fixed by NTP = 00:00:00:00
Weekday Date Month Year
This menu item allows the user to set or adjust the date parameters for the UTC DateTime menu (where the SPG is
not synchronized to an external time source, such as GPS or NTP, i.e. when neither option is enabled in the Option
Enable menu), or for the Summer DST Event, Winter DST Event or Leap Second Event menus (when in User
Defined mode).
The Weekday field is not adjustable. It is calculated using the settings in the Date, Month, and Year fields. The
options in the Weekday field appear as: Monday through Sunday.
The options for the Date field are: 1 through 28, 29, 30 or 31 according to the setting of the “Month” field.
The options for the Month field are: January through December.
The options for the Year field are:
• 2000 through 2034 for the Summer DST, Winter DST and Leap Second menus
• 2007 through 2034 for the UTC DateTime menu

These dates may already have been pre-set using the Daylight Saving and Leap Second menu options detailed
below.
Leap Second
The options in this menu line are: Off, User Defined.
If set to “User Defined”, then the time and date will automatically adjust at the time and date set in the Leap Second
Event (UTC) menu.
If the menu line “Leap Second” is set to “Auto from GPS”, the time and date of the event is automatically
determined via the GPS connection.
Action DateTime
This menu item allows the user to set or adjust the time at which a Summer DST Event, a Winter DST Event, or a
Leap Second Event occurs.
The field “hh:mm:ss:ff” is used to set the time at which the event happens. The sub-fields in the field “hh:mm:ss:ff”
represent hours: minutes: seconds: frames. Sub-fields are adjusted directly, and automatically reflect any changes.
For these menus, only the “hours” sub-field is adjustable. A highlight cursor is displayed showing which sub-field
is active and hence editable in the field.

These times may already have been pre-set using the Daylight Saving and Leap Second menu options detailed
below.
Daylight Saving
The Daylight Saving mode should be selected only after setting the required Country Code. The options in this field
are:
• Off — No Daylight Saving services are provided by the SRG-4500.
• User Defined — A single spring and autumn daylight saving service is provided.
• Automatic — If the country code is set to Australia, Brazil, Canada, New Zealand, USA or any European
country, then a full daylight saving service is provided over a sequence of years up to 2034. This option is only
enabled when Country Code is set for a DST supported country.