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of Santa Exhibit C -3 Statement of Work ❖ Motorola Geoflle Utility (MGU): Motorola's geofile utility that runs on ESRI ArcGIS software (ArcEditor level or higher). The MGU supports the upload of ArcGIS data directly to CAD, the assignment of digital street centerlines, intersections, and common places to service boundaries, and a street check utility that identifies and flags street records in error, from a Motorola CAD perspective. ❖ Mobile Personal Computer (MPC): In- vehicle Mobile Personal Computer. ❖ North American Datum (NAD): There are two North American Datums as follows: North American Datum of 1927 (NAD 27) and North American Datum of 1983 (NAD 83). Both are geodetic reference systems, but are based on different measurements. NAD 27 incorporated all horizontal geodetic surveys completed up to 1927. NAD 83 updated NAD 27 with current measurements using radio astronomy and satellite observations. NAD 83 positions are consistent with satellite location systems. ❖ Record: Represents a row of information in an SQL database table. A record may represent a single street segment or a single common place or a single fire dispatch zone. ❖ Relative Accuracy: The positional measurements in the geofile in relation to other elements. For instance, 2nd Street is east of 1st Street and west of 3rd Street. For many sites without AVL, relative accuracy is more important than absolute accuracy (true coordinate position on the ground). ❖ Segment: Typically represents a street block that is defined by two intersections. The terms street segment and street record may be used interchangeably. ❖ Shapefile: An ESRI shapefile ( *.shp) is a spatial data format that consists of a main file, an index file, and a dBASE table. The main file is a direct access, variable record - length file where each record describes a shape with a list of its vertices. In the index file, each record contains the offset of the corresponding main file record from the beginning of the main file. The dBASE table contains features attributes with one record per feature. The one -to -one relationship between geometry and attributes is based on record number. Attribute records in the dBASE file must be in the same order as records in the main file. Shapefiles can be created by digitizing shapes using ESRI ArcView GIS feature creation tools. ❖ Source Maps: The hardcopy maps and/or digital maps that the Customer sends to Motorola during the geofile build process. The source maps are used by Motorola to commence geofile construction. ❖ State Plane Coordinate System: The State Plane Coordinate system was established by the federal government and is based on X,Y coordinates defined by the USGS for each state. Locations are based on the distance from an origin point defined for each state. Exhibit C -3, Statement of Work Page C3 - 63 05/2/05 CN: 05 -17505 This document contains Motorola and Motorola confidential, proprietary, and trade secret information and may not be shared with any person or agency rot directly associated *fth the City of Santa Ana without the express written consent of Motorola, Inc., or its designees.