navnet1 setup

Chilipepper

New member
I have a navnet1 system set up for c-map charts. All units were purchased at the same time (2002) and installed by the dealer. The set up was as follows: Upper helm - GD1700C
Lower helm - M1722C
Radar Antenna Unit: RSB-110, connected to lower unit via cable with large rectangular plug
GPS - GP320B (Waas) - connected to imput 1 on upper unit
Network Sounder - BBFF1, connected to 12v, 520T-HDP transducer, and ethernet hub
Ethernet hub - connected to 12v, network sounder, GD1700C via network port, and M1722C via network port
This arrangement performed properly, however the Upper helm unit, GD1700C quit working and is being replaced by a larer NavNet1 1900C.
I had to convert this unit from Navionics to C-Map and the folks at Furuno USA were extremely helpful in assisting me getting this done. The new to me 1900C now displays the sounder, radar and GPs Chart. The probem I am encountering is that while the 190C shows the chart and boat position correctly,the data boxes are not displaying any information such as Lat Lon, COG, SOG etc. It seems to be a setting issue as the information is being displayed properly on the M1722C.
Any help would be greatly appreciated
 
Thanks for the response Titanic 11 : here are the photos : The first one shows the empty boxes of the lower unit, and the second one shows the upper unit with the information present. Sorry it took as long as it did, the photo files were too large and had to be edited...
 

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Hi Chilipepper,

You will want to check the sources on the lower unit to see where it is looking to get the data for those data boxes.

If you need help with how to do that, let us know.
 
I will do that again, I must be missing something... Pretty sure I have it set up looking at "Radar" as that is the name designated to the upper unit. (Lower unit is named "Plotter") I will get on it in the morning and get back to you.....
 
On the one not showing position. You said the old GD1700C quit working, so the plug that was going into DATA 1 ended up connected where? Basically I just need to know where the GPS320B is connected to now.
 
The M1722C is being moved to the upper helm, so the GPS is conneced to this unit via Data 1.
the radar is als connected to this unit and the netwrk port is connected to the ethernet hub.
The 1900c is the lower unit connected via network port to the hub.
 
I would appreciate that - I will take you up on your offer.....right now the lower unit has all sentences under output to network turned off. I believe it is looking to the Radar (upper unit) for nav/ position information but perhaps there is an error in the setup......
 
On the Upper unit M1722C please execute these steps...
1. Menu -> Sys Config -> System Setup -> Port Setup -> Output thru Network.
2. ONLY turn ON these sentences: GGA, VTG, ZDA

On the 1900C...
1. Menu -> Sys Config -> Nav option -> Nav Source Settings.
2. Set position source to ALL
3. Menu -> Sys Config -> Sys Setup -> Port Setup -> GPS/NMEA port.
4. Set Furuno BBGPS to NO.
 
Eureka!!!! You nailed it Titanic11..... my lower unit,the 1900c, had the BBGPS set to YES. Following your instructions I changed that setting to NO and voila - problem solved. I can't thank you enough for your time and sharing your know how.
Hope you have a great Thanksgiving!
 
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