Mobile Crossing WayPoint Map Loader Manual del operador descargar pdf (Pagina 124)

6.17 Harvest Sonar Log Files

Some Lowrance combo GPSs have a recording sonar that has the capability to log (save) all their sonar (depth recorder)

data to a data card. This creates a very large file on the card (for example 250 MB) containing all the sonar data for a

whole day's trip. You can use the free Lowrance SonarViewer to replay all this sonar data. This gives you the ability to

find all the places where you passed over a ledge or wreck and save that data to a SeaMarks file. You might not have

been watching the screen when going over something interesting, but it is captured nonetheless. On the date of this

printing, SonarViewer version 2.1.2 allows you to play back and adjust the settings of any Lowrance sonar log file

recorded with the combo GPS. By pausing and hovering the cursor over the trace in the viewer, you get a pop-up box

with the Lat/Lon, depth, date, time, and sounding number. Without the harvester, you would have to write down this

data and manually type it into the program. However, the SonarViewer can output chart information to a text file in a

comma-delimited form. This data is not the sonar trace itself, but the data in the pop-up window for every sounding.

There are typically around 100,000 soundings in an 8-hour log. The Sonar Log Harvester can read this file and create a

waypoint when given only the sounding number. It notes the GPS reported speed and calculates the ledge height while it

is doing the capture. For this operation is useful to have a large computer screen or two monitors so you can more easily

go between the SeaMarks and Sonar Viewer programs.

7. Plan Trip Menu

This menu selection is for planning a trip or setting up a route by selecting waypoints from the file. This trip plan will

show range and bearing from one waypoint to the next. A trip plan is like a Route in your GPS in that it consists of an

ordered sequence of waypoints from your list. Unlike a Route, this plan can be saved and then it is divorced from the

file it was created from. In a GPS, a route becomes corrupt if one of the waypoints in the route is deleted.

This capability can be used to make Route files. If you save it, you might want to make the file name indicate that it is a

Trip Plan or a Route. This capability is also useful to break out a few waypoints from a file to give to someone else.

1 2 ... 119 120 121 122 123 124 125 126 127 128 129 130

Sin comentarios

Mobile Crossing WayPoint Map Loader Manual del operador Pagina 124