User manual EAGLE Z 9500 GPS INSTALLATION INSTRUCTIONS

[. . . ] . 1. . . ; Z-95OO INSTALLATION/OPERATION MANUAL LITHO IN U. S. A. 988--0119--29 EAGI PDF compression, OCR, web-optimization with CVISION's PdfCompressor NOTES: Copyright © 1990, 1991, Eagle Electronics. All rights reserved. WARNING! USE THIS GPS RECEIVER ONLY AS AN AID TO NAVIGATION. A CAREFUL NAVIGATOR NEVER RELYS ON ONLY ONE METHOD TO OBTAIN POSITION INFORMATION. CAUTION This GPS receiver, (like all GPS navigation equipment) will show the shortest, most direct path to a waypoint. It provides navigation data to the waypoint regardless of obstructions. Therefore, the prudent navigatorwill not only take advantage of all available navigation tools when travellingto a waypoint, but will also visually check to make certain a clear, safe path to the waypoint is always available. NOTICE! As of this writing, the Department of Defense (DOD) has not declaredthe GPS navigation systemas operational. [. . . ] Ascreensimilartotheone at right appears. Thesolidline is your track, or path you'vetravelled. Thecircle is a compass rose with north, south, east, and west marked. I I CHART DUAL FREQUENCY OPERATION The BottomTrack and Zoom featuresare not available whenthe Z-9500GP5is in the dual frequency mode. To "zoom" a range, switch to the manual mode by pressing the AUTO key, then press the RANGE key. Now upper and lower limits can be changedto suitconditions. The sensitivity and Grayline®alsoadjust differently when the Dual Frequency feature is enabled. To adjust them, first press the SENS key. The screen shown on the opposite page appears. To adjustthe sensitivity or Grayline®level for the left, or 50 kHz side of the screen, press the key adjacent to the "Left" label. Press the key adjacent to the "Right" labelto adjustthe sensitivity and Grayline®on the right, 192 kHz side of the screen. The normal sensitivity and Grayline®labels appear and the features adjust normally. 24 PLOTTER SCREEN II RADIUS N . 25 HF'I l:)] I O°pi I (IE0, 0Otin Ic N 4ij . OOtln DEPTH I 32°OO. 193 cIIIIii: 79°25. 895 l, J I PDF compression, OCR, web-optimization with CVISION's PdfCompressor 69 Status Display Thisscreen showsthe state ofeach satellite theunitis tracking. Toviewthis screen, presstheMEN U key, thenpressthekey nexttothe"Status Display. " The screen shown belowappears. Select Chart 0 wsa rAUTO 0 15 Left Right 32 64 AJ Clear ____z 80 192 KHZ 80 STATUS DISPLAY Pressthe key nextto the Left label to adjust the sensitivity and Grayline®onthe left side of the screen. Pressthe key nextto the Right labelto do the same on the right side of the screen. Yourpresentpositionappears nearthetop ofthe screen. Beneaththisand totheleftare the GDOP and HDOP displays. GDOP standsfor Geometric Dilution Of Precision. It shows the combination valueof horizontal (HDOP), vertical(VDOP)I andTime(TDOP). The smallertheGDOP number is, the betterthe crossingangles are. The GPS receiverselectssatellites based on GDOP, thereforeit alwaystriesto use satellites that will resultin good crossing angles. The bestway to use GDOP is to anticipatesystem problems. In other words, if the crossing angles are decreasing, then the satellites could be moving out of your viewing range. Therefore, the system may become unusable if more satellites don't appearshortly. [. . . ] Now press the key adjacent to the "Dig. The screen will clear and the 79500GPS will display sonar information again. You may need to change the rangeto 0-10 or 0-20 feet. If there is a lot of "clutter" 48 45 PDF compression, OCR, web-optimization with CVISION's PdfCompressor or random echoes on the screen, turn the sensitivity down until a definite bottom echo is seen. [. . . ]