Ross SRG-4400, User Manual

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5–26 • Menu System SRG-4400 User Manual (Iss. 06)
The field “00:00:00:00” is used to add / subtract time to / from UTC Time in the SPG Time menu.
The sub-fields in the field “00:00:00:00” represent hours: minutes: seconds: frames. When
sub-fields are adjusted, the corresponding fields in “Running Time” reflect the changes.
Only the “hours” and “minutes” sub-fields are editable. A highlight cursor is displayed showing
which sub-field is active and hence editable in the field. The “hours” sub-field is fully adjustable
from -12 to +12. The “minutes” sub-field is only adjustable in 15 minute intervals - this is
because the smallest defined increment in the list of global time-zones is 15 minutes.
These sub-fields always display any offset that has been entered by the user.
If the offset time is zero or positive, a plus sign is displayed (as above); if the offset time is
negative, a minus sign is displayed.
Running Time (UTC)
This menu item displays the current time, as received by the GPS system, on the GPS Date Time
(UTC) menu. This time only displays w hen a GPS solution h as been found, and the system is
locked to the received data.
The field hh:mm:ss:ff displays hours, minutes, seconds and frames in the 24-hour format. Note
that frames are always displayed as 00, because this information is not included in the GPS data
stream.
Nudge
This menu item allows the user to manually adjust UTC Time (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).
The field “00:00:00:00” is used to add / subtract time in the UTC DateTime menu. The sub- fields
in the field “00:00:00:00” represent hours: minutes: seconds: frames. When sub- fields are
adjusted, the corresponding fields in “Running Time” reflect the changes.
Each sub-field (except “frames”) is edited individually. A highlight cursor is displayed showing
which sub-field is active and hence editable in the field.
UTC time counts continuously. Note that each time the seconds field is nudged, the frames field
is reset to zero. This provides an easy way to set the UTC time to be coincident with your
temporary reference.
This field always displays zeros in each of the sub-fields.
When GPS or NTP are enabled, the Nudge feature is disabled, and this menu line appears as
either:
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.