Raven viper, Installation & Operator'S Manual

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88 Viper/Viper 4+ Installation & Operation Manual
Elevation. The current GPS elevation above sea level.
Satellites. Displays the number of satellites currently used in the position solution.
Differential ID. Depending upon the correction source used, this value will display the differential source
identification such as the differential satellite PRN, a base station ID, etc. Some correction sources will not
populate this field.
Differential Age. This value is the age of the last differential update. The differential age should not rise above a
few seconds to ensure accurate position corrections during field operations depending on correction type.
HDOP. Horizontal Dilution of Precision (HDOP) is a value indicating the geometry of the satellites used in the
position solution. Lower values indicate better positioning of the used satellites.
GGA Quality. Displays the current differential fix status. This value will display:
•
‘0’ or ‘1’ if no differential corrections are being received, single solution
•
‘2’ when the DGPS receiver has locked on to a differential source (SBAS or converging with GS/
OmniSTAR corrections)
•
‘4’ for RTK fixed mode for fine GPS course correction mode
•
‘5’ for fixed GS or OmniSTAR XP/HP correction modes or RTK float mode
UTC Time and Date. Universal coordinated time and date information is displayed in these fields (Greenwich
Mean Time).
Messages. Displays what NMEA messages are being received by ROS and the frequency at which they are being
received.
GPS REVERSE SENSING
NOTE: The GPS based reverse sensing feature is not available if a Raven SmarTrax steering node with terrain
compensation capabilities is detected on the CANbus and the Terrain Compensation feature on the
node is activated.
Touch the ‘GPS Reverse Sensing’ option at the bottom of the GPS Global Settings tab to toggle the reverse sensing
feature. Enable this feature to allow the ROS device to automatically detect when the vehicle is traveling in reverse.
When reverse movement is detected during field operations, the device will keep the previous orientation of
vehicle indicator while updating the vehicle position.
Enable this feature if ROS will be used to map application or field coverage while the vehicle is reversing (i.e.
backing into corners).
NOTE: If this feature is disabled, the guidance display will assume all vehicle motion is in the forward
direction.
When the reverse sensing feature is enabled, ROS may require the operator to manually override the
current direction of travel during field operations. Before beginning field operations, review the
Widget Selection and Set Up section on page 138 and the Widget Catalog Definitions section on
page 140 and ensure that the appropriate widgets for this feature are available on the guidance
screen(s) as appropriate.
The Forward Override widget is required to manually override the direction of travel during a field
operation.