Question Regarding Standard Horizon VHF Matrix AIS GX2100

[MarkSF]

Originally Posted by surfmachine

Hi, I have connected up my new gx2150 to my 2008 raymarine A50
chartplotter, it reads the gps input but will not show any ais input
or display???

Do you know if the a50, running V0.04 software is able to display the
gx2150 ais data? I am not sure if it can read the VDM sentences used in NMEA by the AIS on the matriz output???
Does it need a software upgrade??

I have config the gx2150 to 38400 bps
I have config the a50 to output 38400 bps
I have cofig the a50 to sgow ais overlays, but it still has X through
the AIS symbol up the top right hand side even though the radio shows
ais symbols within the a50 range??

What have I done wrong???
I have looked on the SH site and downloaded the connection diagrams.

Thanks from Keith.

To clarify, if I understand correctly :

The VHF is showing GPS position (coming from the A50) and AIS targets OK. The problem is that the A50 is not showing AIS targets.

Please tell us me you wired the cable. This could be the source of the problem.

I experienced some confusion connecting my 2150 to my Lowrance HDS-5M, because the radio has single ended and the chartplotter double-ended interfaces. It is possible when they are mis-wired, to achieve one way communication. I know this because I did it - and had the same problem you have.

[surfmachine]

Thanks for the reply!
Ok...
Gray from SH, dsc and ais output, to white, nmea positive input on A50.
Green from SH, nmea common, to green, nmea negative input on A50.
Blue from SH, gps input, to yellow, nmea positive nmea output from A50
Brown from SH not connected.

Set SH output to 38400 baud.
Set A50 to accept 36400 baud and dsc and ais sentences.
A50 has two nmea com ports.
All on com1 of A5.

What do you reckon?

[goboatingnow]

Originally Posted by surfmachine

Thanks for the reply!
Ok...
Gray from SH, dsc and ais output, to white, nmea positive input on A50.
Green from SH, nmea common, to green, nmea negative input on A50.
Blue from SH, gps input, to yellow, nmea positive nmea output from A50
Brown from SH not connected.

Set SH output to 38400 baud.
Set A50 to accept 36400 baud and dsc and ais sentences.
A50 has two nmea com ports.
All on com1 of A5.

What do you reckon?

Where the other A50 output wire going ?

Dave

[surfmachine]

Thanks, well, the other negative output wire from the A50 is unconnected at present, I have tried hooking both of the nmea commons from the A50 to the SH single common, but does not make any difference. Also, just the single common output from A50 connected alone, does not make any difference.

Also tried connecting the brown, AIS output from the SH to the A50 input but no good!

I think that they are the same connection on the A50, ie earth?

Keith.

[mikequig]

I have a SH GX2100, a RM C80 plotter, and a Brookhpuse multiplexor on my boat.

Several years ago I was able to hook everything up but I was never successful in getting AIS info to display on the chart plotter, although GPS info did display on the radio. I remember emailing Brookhouse and they said something about a need to add a resistor but that's about where they lost me. I'd like to re-attack this issue because I am getting the boat ready for sale and I would like everything to work properly.

Does anyone with a similar configuration have any tips?
Thanks.

[phantomracer]

Originally Posted by mikequig

I have a SH GX2100, a RM C80 plotter, and a Brookhpuse multiplexor on my boat.

Several years ago I was able to hook everything up but I was never successful in getting AIS info to display on the chart plotter, although GPS info did display on the radio. I remember emailing Brookhouse and they said something about a need to add a resistor but that's about where they lost me. I'd like to re-attack this issue because I am getting the boat ready for sale and I would like everything to work properly.

Does anyone with a similar configuration have any tips?
Thanks.

yes you need to put a resistor in the system. it will work great. follow their directions.

Here is an email I received from them

Originally Posted by Brookhouse

we found out that the AIS output signal is rather weak. It is fine to drive a non opto-isolated port, but NMEA compliant opto-isolated port like the mux has, is difficult to drive at 38400baud. We have found an easy solution for this problem, that has been implemented successfully by a number of mux/GX2100 users: Connect a 1K (1000Ohms) "pull-up" resistor between NMEA IN 4 A (combined with brown GX2100 wire) and the +12V terminal on the mux. Slide some heatshrink over the resistor to avoid shorting with other connections. This should resolve the problem.
A 1K resistor can be bought from Radioshack or from an electronics repair shop for a few cents.

worked for me

[mikequig]

Do I have this right then, just put a 1KOhm resister between the AIS input CH 4 (A or B?) and the DC 12v+ input? If the leads on the resister are long enough (and insulated with heatshrink, of course) just stick them in the terminals, tighten the screws, and that's it? (of course, the other inputs have to be connected as well - but i might only need to add the resister to the existing wiring)

[mikequig]

to correct my earlier post/reply - i see that you connect the resistor between CH 4 A (brown) and DC 12v+

[phantomracer]

Originally Posted by mikequig

to correct my earlier post/reply - i see that you connect the resistor between CH 4 A (brown) and DC 12v+

yes. thats it i put the resistor in a piece of shrink tube, bent the resistor wires 90 degrees at each termial ( 12v and 4a) so they can go in each terminal, neatly. the 12v wire and the wire going in the 4A port went in with the resistor wire without a problem

this is a SH issue, not brookhouse or the plotters problem.

I have since moved to N2000, so my problems went away, and just wired the ais directly to the plotter, which works well. i dont use the brookhouse anymore. worked well when i had it though