
The Lowrance window will have information as to how many waypoints the specific GPS can store and so forth. For
upload and download, the program places the Lat/Lon information in Lat/Lon field and the 8 to 10-character waypoint
name in the NAME and DESCRIPTION fields. The first step you take should be to download whatever is in the GPS'
memory to a file so that it can be saved, you can see what type of information is available, and see how an upload file
should be configured. You can then reorganize this file or create another to upload to the GPS. There are four tabbed
pages to the Upload/Download window that allow you to look at waypoints, plot trails, icons, and routes. Waypoints and
icons are translated to data files, routes to trip plans, and plot trails to track files.
Remember several points about the GPS. First, it is desirable to leave some empty waypoints in the GPS for on-the-spot
waypoint saving. Indeed, one of the useful operations for the program for Lowrance is to erase a block (or all) of the
waypoints to clear the way for more on-the-spot waypoint saving.
Second, all waypoints are put in numerical order just like in the program. This means that they can have duplicate names
unlike some other brands of GPS. Third, the Program will upload as many waypoints as you have in the file up to the
maximum storage available. Also, if you want some specific points in the GPS in specific locations, put them in the file.
For example, it might be useful to use WPT-002 for a navigate-to setting and WPT-001 for the inlet. They are easily
available when the unit is first turned on. When you download the GPS, you will notice that some waypoints are blank.
To upload a file like that, you either need blank waypoints in your file, or you need to put junk waypoints there and later
erase them using the Delete Waypoints operation.
In order to download a route and make it into a trip plan, the waypoints must first be downloaded from the GPS since the
route depends on the numbered waypoints. That is, a route is a sequence of waypoint numbers, so the waypoints must
correspond to the route. When you are done, you can examine the route from the Trip Planner. You can also save it or
print it from there.
Furuno (NavNet)
Serial cable connection was the way older GPSs were interfaced. This requires a direct cable connection between the PC
and GPS. This is sometimes complicated by lack of a serial port on the PC necessitating a USB to serial converter.
More recently the use of the memory chip or data card has become the preferred way, as it does not require that the PC
and GPS be brought together. It is also easier and in some cases allows at-sea changes in the loaded waypoints without a
PC present. See the import/export chapter on doing data card waypoint transfers.
Waypoint transfer from a Furuno GPS to PC for the GP30 line of products must be done via serial cable (7 pin cable
(Furuno part # 000-145-612) to serial connector). You may have to solder on the serial connector to make this cable.
Use the Furuno loader supplied with SeaMarks to effect the transfer. It creates a file in the TXT form that can be
imported/exported. The file is created by the Write OZI button. If you look in the file, it has “DMX” as a field in every
record.
Waypoint transfer from a Furuno GP1650/1850, Furuno NavNet, or GP7000 to PC can be done via serial cable or by
utilizing a memory data card in either FP or SD format. The GP1650/1850 cable is a 7 pin cable (Furuno part # 000-
136-730) to serial connector. There is a pre-made cable FUR-DWN-CBL. The Furuno NavNet and GP7000 cable is a 7
pin cable (Furuno part # 000-154-028) to serial connector. There is also a pre-made cable NET-DWN-CBL)
To make the hardware connection to your computer from your GP32, you should follow the wiring instructions in your
operator's manual. If you have lost your manual, it is available on Furuno's web site under manuals and documents.
There isn't a pre-made cable made for the GP32 because the serial connector must be wired to your existing power/data
cable. Purchase a DB9 female connector from an electronics store.
Wiring instructions
1. Make sure the parts to be soldered are clean and dry. Wiring should be stripped to appropriate lengths to ensure
proper fit into the connector. If the serial connector already has wires attached, use appropriate wire to wire connectors
for the assembly as opposed to soldering the connections. Refer to the GPS's manual for wiring of the data cable.
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