User manual TRIMBLE NOMAD 900 GETTING STARTED GUIDE

[. . . ] GETTING STARTED GUIDE Nomad® 900 Series handheld computer March 2010 Limited Warranty & Liability Limitations This product is limited warranted against defects in materials and workmanship for twelve (12) months from the original date of purchase. Nomad accessories and peripherals are limited warranted against defects in materials and workmanship for ninety (90) days from the original date of purchase. If notice is received of such defects during the limited warranty period, the proven defective product(s) will either be repaired or replaced, at the manufacturer's option. The manufacturer does not warrant that the operation of the products will be uninterrupted or error free. [. . . ] The typical expected accuracy of the GPS receiver with the correction signals is about three to five meters in an open sky. It may take several minutes to start tracking the first time you try to 31 use it because it needs time to update its position and download current satellite information from the GPS satellites. After your Nomad has downloaded the current satellite information, Assisted GPS (A-GPS) will retain a memory of the satellite paths up to 72 hours. Therefore the Nomad can lock on the satellites quickly, in less than 20 seconds in an open sky. SatViewer provides a way to quickly start using the GPS functionality of the Nomad, but it is not a stand-alone mapping, GIS or navigation program by itself. SatViewer is useful for checking the GPS configuration and enabling advanced features of your Nomad GPS receiver when these settings are not made available in other applications. When changing any GPS settings or other settings, it is important to wait a few moments after tapping on the desired option to allow time for your Nomad GPS receiver to implement the requested change. SatViewer communicates with your Nomad GPS receiver to compute your current position, speed, direction (azimuth) and height. This information is displayed at the top of the screen along with other information about the satellite signals. Speed and direction measurements are only useful when your Nomad GPS receiver is in motion. Standing in one position with your Nomad GPS receiver may result in inaccurate readings in direction and speed. Height calculations from a GPS receiver are typically not very accurate. Vertical accuracy is about two to three times worse than the horizontal accuracy). feet and heights are only displayed in height above mean sea level (MSL). The pages of the application are accessed by tapping the various tabs, which are laid out in index card format. The information in each tab is described on the following pages. 32 Sky Tab Sky Plot Graphic: The Sky Plot is a graphical representation of where the satellites are positioned in the sky. The top of the circle represents north, the center is straight up, and the farthest right point is east. The outer blue circle represents the horizon and the red circle represents the elevation mask. The light gray circles radiating out from the center are the zenith angles in ten degree increments. The lines bisecting the light gray circles divide the circle into thirty degree azimuths. The satellite icons are color coded to indicate if they are used, unused, or SBAS satellites. Each icon is labeled with the corresponding satellite's ID number (PRN). [. . . ] 6) Replace the battery only with another battery that has been qualified with the system per this standard. Use of an unqualified battery may present a risk of fire, explosion, leakage, or other hazard. 7) Promptly dispose of used batteries in accordance with local regulations. If dropped, especially on a hard surface, and the user suspects damage to the battery, take it to a service center for inspection. [. . . ]