Target position is not correct

[linhkienbodam]

Hi,
My Furuno Radar 1833C has been connecting with GP320 and PG500 heading sensor. The system seems working very well, It shows my present position and the cursor position. The problem is when I find a target and I used the cursor to find the target coordinate then I pass it to other boats, they can not come and see the the target. What's happened with my radar?
Thank you
Nick

 

[kicker]

So you are getting good heading data, good position data, and good cursor position, are you guys all set to view the same LAT/LONG format? If you are set to "Degrees, minutes, and seconds" and they are set to "Degrees and decimal minutes", that can throw a wrench into things.

Do you have data boxes setup with heading and COG? You might want to verify your heading data number with your COG position number match, when you are cruising. That will help us verify data is correct and your sensors are working properly on your boat.

 

[linhkienbodam]

I contacted with Furuno service in my area and it is said that I must have a ARP11 ARPA Board then I bought it and fit it to my Navnet. The positon is correct but I can NOT acquire the target. The ARPA board worked well when they tested it before shipping. What's happened?
Thank you

 

[Johnny Electron]

For ARPA, you want to be running AD10 heading. From the photo; your connected the the compass NMEA port using a blue network cable not a heading cable. If you wire up AD10 correctly to the RDP139, then you should be closer to fixing the problem.

 

[linhkienbodam]

I have 2 cable black and blue. Blue cable is network cable. part number is MJ-A6SPF0014 (this one was used for my ETR-6/10N network sounder) I can not find the part number of black cable but I think it seems MJ-A6SPF0007 ( I used multimeter and checked, the wiring is the same MJ-A6SPF0007 wiring diagram). The problem is when I connected the black cable to Port 3, they had a heading data but the radar can not acquire a target. If I used the blue cable, the target were acquired but the heading sensor shown Zero always though I moved a C-500 head around.
I tried to connedt the blue cable to PORT 2, radar can get heading data easily but the black cable can not though I did the same way

 

[Johnny Electron]

The blue network cables are cross over cables and designed for the Furuno Network port use. If the unit has an ARPA board installed it must use AD10 heading NOT NMEA 0183. The photos reflect the network cable being used and also being connected to the NMEA port of the PG500 compass. The ideal wiring would be via the AD10 port of the PG500, properly wired into the 10.4" NavNet on data port three which holds both the ARPA board and the connected radar.

 

[linhkienbodam]

Yes, black cable and AD10 port on PG500 are correct. My system works perfectly now. I read a PG500 operator manual and I saw PG500 port 2 connecting to Navnet series