© Valeport Limited 2003
MIDAS Surveyor Operating Manual
Page 13
0420805d.doc
The additional data input values area will continually display the latest GPS position in either Latitude/Longitude or
Eastings/Northings format (as selected by the user, Section 4.2.7.2) together with the current time, and will also cycle
through the following parameters:
GPS
OK/timeout
GPS Quality Data
SVs (number of Space Vehicles (satellites) fixed)
HDOP (Horizontal Dilution of Precision)
corr.OK (Signifies that differential correction from internal or external source is working)
Age (Age in seconds of differential correction data)
Speed
Vessel speed in knots from GPS data
Direction
Direction of travel in degrees from GPS or external source
Heave Data Input
Updates as new heave data is received
Tidal Data Input
Updates as new tide data is received
Sound Velocity Input
Updates as new sound velocity data is received
Memory Status
%memory space free for logging
Bar Check Settings
Transducer draft and sound velocity setting used for measurement
All system setup functions are retained in memory until overwritten, so if the unit has been used before in a similar
geodetic environment and configuration, the user may immediately begin to log data.
If this is the first time that the instrument has been used, or it is being used in a new location or configuration, it is
strongly advised that the each of the System Setup functions are viewed and changed as appropriate. This applies
particularly to the Geodetic Setup functions, and the basic clock and memory functions.
4.2
SYSTEM SETUP
At any point in the instrument operation, the Menu button may be pressed to display the system setup menus. The
available menus will be dependent on whether or not the system is currently logging; some major functions such as the
GPS setup cannot be altered part way through a data file, but may be altered between data files.
4.2.1
HELP
When the on-screen menu is active, pressing the Help button will cause relevant instructions & explanations to be
displayed at the top of the screen. Note that this display area will change as the user moves through the menu screens.
Press Help again to remove the display.
4.2.2
NAVIGATION
There are a total of 13 functions listed in the Main Menu (detailed below) – some are sub-menus, and others are direct
functions. A sub-menu is indicated by an arrow to the
right
of the item. The arrow to the
left
of the item indicates the
current selection.
•
Scroll up and down the menu list using the up and down arrow keys. To select the item, press the Enter key. This
will access the sub-menu or function.
•
Once a function has been accessed, the arrow and Enter keys will be used to make changes.
•
The Escape key will move back up one menu level.
