Nmea alarm

It was using a digital meter set to the 20vdc scale the voltage was fluctuating up and down randomly between about 1v up to around 5v.

nothing is straight forward is it.

Pete
 
Last edited:
pete said:
It was using a digital meter set to the 20vdc scale the voltage was fluctuating up and down randomly between about 1v up to around 5v.

nothing is straight forward is it.

Pete
Click to expand...


Having looked at this thread yesterday, I was interested, as I am trying to interface a Garmin 128 with a yeoman, using a ST60 Multi head unit NMEA output, as a transmitter of the NMEA to yeoman.

Having looked on the Garmin support website it says you can test NMEA output with a digital meter for output and the results are exactly as you have said.

It will give a test of DCV between 1-5v every 4-5 sec which is the NMEA pulse.

https://support.garmin.com/support/searchSupport/case.faces?caseId={187d6d40-540f-11df-dfe2-000000000000}

Hope this helps Philip
 
xeitosaphil said:
Having looked at this thread yesterday, I was interested, as I am trying to interface a Garmin 128 with a yeoman, using a ST60 Multi head unit NMEA output, as a transmitter of the NMEA to yeoman.
Click to expand...

I have a Garmin 128 feeding a Yeoman - did you get it working?

Not sure where the Raymarine stuff comes in though.

Pete
 
prv said:
I have a Garmin 128 feeding a Yeoman - did you get it working?

Not sure where the Raymarine stuff comes in though.

Pete
Click to expand...

Hi Pete,

My Garmin is at present wired to the ST60 Multi at the chart table, which gives ST60 Wind, Tri Data, and GPS info. My idea is to use the NMEA output terminals on the back of the Multi Unit to supply the Yeoman with the necessary NMEA info, and supply a separate power feed independently.

Should work, but is a job for next weekend?

Only got the Yeoman Compact last weekend at a jumble, going for a song?
Powered it up Sunday, seems to work as per manual without NMEA input, but keen to see if it works properly with GPS feed?

Time will tell?

Philip
 
Philip,

I think you need to connect the Garmin's NMEA output to the Yeoman as the ST60 Multi does not output GPS information on it's NMEA output; only Instrument data, eg depth, Heading, Speed, Water temperature, Wind speed and direction. I take it the Garmin is the source of GPS in your system?
 
malcp said:
Philip,

I think you need to connect the Garmin's NMEA output to the Yeoman as the ST60 Multi does not output GPS information on it's NMEA output; only Instrument data, eg depth, Heading, Speed, Water temperature, Wind speed and direction. I take it the Garmin is the source of GPS in your system?
Click to expand...

Thanks malcp, on second reading of the Multi handbook you may be right.

I looked quickly at it, and saw two headings with NMEA, and thought all sentences were applicable to both? Funny it Decodes different sentences than it Transmits, I would have thought it would have been the same, with the same sentences in both directions?

It may be then, that I will have to put a junction box between the GPS feed to the Yeoman to allow me to extend the feed to the ST60 Multi , and hope that, that will sort it?

I do have a SH 300i plotter, but looking on the Yeoman Website, the literature says it dosn't interface with SH products or that is my understanding? and seeing the Garmin was in the same location, at the chart table, it seemed sensible to use that GPS as a source.
 
xeitosaphil said:
It may be then, that I will have to put a junction box between the GPS feed to the Yeoman to allow me to extend the feed to the ST60 Multi , and hope that, that will sort it?
Click to expand...

Yes that should be fine. You should be able able to connect upto 4 NMEA loads (inputs) to one NMEA source (output).

Having a different GPS as a source for the Yeoman is no bad thing, as it offers a degree of redundancy. If the Yeoman won't accept SH plotter sentences it may be because of the NMEA identifier prefix it uses.
 
xeitosaphil said:
I do have a SH 300i plotter, but looking on the Yeoman Website, the literature says it dosn't interface with SH products or that is my understanding? and seeing the Garmin was in the same location, at the chart table, it seemed sensible to use that GPS as a source.
Click to expand...

I admit I haven't checked, but I think the Yeoman would run fine off the 300i (I have its baby brother the 180i). If it's not mentioned on the Yeoman site it's probably just because it's too new for them; they don't exactly move with the times.

Nevertheless, I think you're better off running the Garmin + Yeoman and the plotter as two independent systems. They're good for different things, at different times. If nothing else, the Garmin+Yeoman will use a lot less power than the plotter's screen.

Pete
 
Regarding the topic that I posted before the thread was hijacked :) I have got an external alarm speaker working with the help of a friend, who knocked me up a small circuit board that has an 12v + and - input from the B&G sounder, a trigger wire to pin 4 of my sounder socket and 2 output wires feeding a small speaker.
He mentioned that he had fitted a tone generator to it and was using the trigger input to switch the 12v + and -.

Hope this may help others with the same problem.

Thanks for all ideas and suggestions relating to my problem.

Pete
 
You must log in or register to reply here.

Other threads that may be of interest

N
Volvo Penta Alarm Module/Alternator Issues
Replies
1
Views
211
superheat6k
superheat6k
lustyd
NMEA 2k voltage
2
Replies
39
Views
686
lustyd
lustyd

Share this page

Top