Seed Hawk Raven 2011 - Manual (Page 103)

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Manual No. 016-3001-003 93
Navigating the Viper Pro Interface
Each product may be set up with a different Zero Rate Tolerance to ensure each product is displayed
accurately on the Coverage Map. On some machines, the main bin will supply a relatively high volume of
product and the tolerance may be set relatively high. Other bins that supply micro-nutrients may apply material
at a much lower rate and will require rate tolerance setting.
Setting the Zero Rate Tolerance
1. Select Menu, then Setup, Maps, and Cov Map. Press the Next button. The Zero Rate Tolerance screen
displays.
2. Using the screen keyboard, enter the appropriate Zero Rate Tolerance setting for each product.
Prescription (Rx) Maps
Prescription maps used on the Viper Pro console must be in the shapefile format to allow the console to
display and automatically adjust product application rates. Prescription maps must be created using GIS
(Geographic Information System) software capable of creating shapefiles. These shapefiles must be in the
polygon shape format that complies with the ESRI (Environmental Systems Research Institute) shapefile
specifications. Shapefiles must also be in the WGS84 datum.
Prescription maps should contain as few zones as possible. Creating maps with too many zones may affect
the Viper Pro’s performance. Raven recommends using the width of your implement as a gauge for creating
zones on the Prescription Map. The smallest zone on the map should be no smaller than the width of the
equipment applying the product.
For Example:
If your machine’s swath width is 90 feet, zones on the Prescription Map should be no less than 90 feet wide.
Once created, the Prescription Map shapefiles (.shp, .shx, .dbf) files must be copied to the RxMaps folder on
the USB flash drive used with the Viper Pro.
Access the Rx Map menu to setup the following features of the Prescription Maps:
• Rx Look Ahead Values
• Prescription Map Display Colors
Multi-Product VRA
The Viper Pro is capable of controlling up to five products in reference to individual maps for each product or a
single map containing the rate information for each product in the .dbf file.
The following table is an example of the .dbf file for a single map that contains multiple product information.
Nitrogen Potassium Phosphorus Lime
100.0 20.0 15.0 750.0
125.0 17.0 33.0 200.0
85.0 45.0 21.0 600.0
50.0 0.0 18.0 925.0