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Next: marine radar detectors
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External
Since: Apr 04, 2005
Posts: 14
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(Msg. 1) Posted: Fri May 20, 2005 4:35 pm
Post subject: Connect Raymarine ST60 Multi to laptop
Archived from groups: rec>boats>electronics (more info?)
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Sorry to post this again, but I have failed to resolve the problem, and have
more clues.
I have a Raymarine ST60 Multi and want to get NMEA data (Wind & Depth) into
the 9 pin serial port on my laptop. If the laptop is not connected to
anything at all (including power supplies) this works fine. If I connect it
to the boats 12v supply via a cigarette type laptop power supply, or an
inverter using the normal laptop power lead I get nothing.
Equally if I connect the USB port via a Serial to USB lead to the GPS and
AIS input I immediately loose the NMEA input.
Kees suggested using an optocoupler which I bought (not cheap) from Active
research which looked as if it should do the job. They are boat people and
supplied me with a 2 way adapter cable for NMEA In and out to serial plug.
Just occasionally with the computer not connected to either external power
supplies or to any other equipment a got a little garbled NMEA through.
I have replicated everything on my son's laptop, a totally different make so
I think we can eliminate the computers. I can connect the laptop through a
cigarette type laptop power supply to an external car battery and again no
problem. If I connect the negative of this battery to the negative of the
ship's battery I immediately loose the signal.
If, with the computer isolated and the NEMA going in correctly via the
serial port I connect the optocoupler input across the NEMA out terminals I
again loose the signal. Its as if there isn't enough power in the NEMA
signal to power anything.
2 other things. If I put a GPS signal into the serial port there are no
problems even when the laptop is connected to the ships power supply again
confirming that the laptops seem OK and that HyperTerminal is configured
correctly.
Along with the equipment mentioned above, I also have a Raymarine S1G course
computer.
Has anyone any further ideas
Thanks,
Phil |
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External
Since: May 20, 2005
Posts: 1
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(Msg. 2) Posted: Fri May 20, 2005 4:35 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Phil,
Although my instruments are ST50, I am using the Raymarine Multiplexer which
has NMEA to Seatalk and also a proper RS232 interface.
GPS (nmea), instruments (seatalk) all show up on my notebook as well as the
GPS position data on my DSC radio. GPS data is also transmitted across the
multiplexor to the autohelm (but I believe the GPS position resolution is 2
decimal places instead of 3 on the seatalk side of things). I used the free
Seaclear software to prove that all data is being received on the PC.
Regards,
Stewart
"Phil Stanton" wrote in message
> Sorry to post this again, but I have failed to resolve the problem, and
> have more clues.
>
> I have a Raymarine ST60 Multi and want to get NMEA data (Wind & Depth)
> into the 9 pin serial port on my laptop. If the laptop is not connected to
> anything at all (including power supplies) this works fine. If I connect
> it
> to the boats 12v supply via a cigarette type laptop power supply, or an
> inverter using the normal laptop power lead I get nothing.
> Equally if I connect the USB port via a Serial to USB lead to the GPS and
> AIS input I immediately loose the NMEA input.
>
> Kees suggested using an optocoupler which I bought (not cheap) from Active
> research which looked as if it should do the job. They are boat people and
> supplied me with a 2 way adapter cable for NMEA In and out to serial plug.
> Just occasionally with the computer not connected to either external power
> supplies or to any other equipment a got a little garbled NMEA through.
>
> I have replicated everything on my son's laptop, a totally different make
> so I think we can eliminate the computers. I can connect the laptop
> through a cigarette type laptop power supply to an external car battery
> and again no problem. If I connect the negative of this battery to the
> negative of the ship's battery I immediately loose the signal.
> If, with the computer isolated and the NEMA going in correctly via the
> serial port I connect the optocoupler input across the NEMA out terminals
> I again loose the signal. Its as if there isn't enough power in the NEMA
> signal to power anything.
>
> 2 other things. If I put a GPS signal into the serial port there are no
> problems even when the laptop is connected to the ships power supply again
> confirming that the laptops seem OK and that HyperTerminal is configured
> correctly.
> Along with the equipment mentioned above, I also have a Raymarine S1G
> course computer.
>
> Has anyone any further ideas
>
> Thanks,
>
> Phil
>
>
> >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: Nov 28, 2004
Posts: 17
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(Msg. 3) Posted: Sat May 21, 2005 11:39 am
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Dumb question I suppose, but since it is a laptop, why not leave it
floating?
(electrically)
"Phil Stanton" wrote in message
> Sorry to post this again, but I have failed to resolve the problem, and
have
> more clues.
>
> I have a Raymarine ST60 Multi and want to get NMEA data (Wind & Depth)
into
> the 9 pin serial port on my laptop. If the laptop is not connected to
> anything at all (including power supplies) this works fine. If I connect
it
> to the boats 12v supply via a cigarette type laptop power supply, or an
> inverter using the normal laptop power lead I get nothing.
> Equally if I connect the USB port via a Serial to USB lead to the GPS and
> AIS input I immediately loose the NMEA input.
>
> Kees suggested using an optocoupler which I bought (not cheap) from Active
> research which looked as if it should do the job. They are boat people and
> supplied me with a 2 way adapter cable for NMEA In and out to serial plug.
> Just occasionally with the computer not connected to either external power
> supplies or to any other equipment a got a little garbled NMEA through.
>
> I have replicated everything on my son's laptop, a totally different make
so
> I think we can eliminate the computers. I can connect the laptop through a
> cigarette type laptop power supply to an external car battery and again no
> problem. If I connect the negative of this battery to the negative of the
> ship's battery I immediately loose the signal.
> If, with the computer isolated and the NEMA going in correctly via the
> serial port I connect the optocoupler input across the NEMA out terminals
I
> again loose the signal. Its as if there isn't enough power in the NEMA
> signal to power anything.
>
> 2 other things. If I put a GPS signal into the serial port there are no
> problems even when the laptop is connected to the ships power supply again
> confirming that the laptops seem OK and that HyperTerminal is configured
> correctly.
> Along with the equipment mentioned above, I also have a Raymarine S1G
course
> computer.
>
> Has anyone any further ideas
>
> Thanks,
>
> Phil
>
>
> >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: Apr 04, 2005
Posts: 14
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(Msg. 4) Posted: Sat May 21, 2005 7:17 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Glad you added the (electrically), Steve
Because the laptop's battery only lasts a bare hour and I also need
information into a second port - GPS info from ships GPS which, needless to
say is wired into the ships battery system and also AIS info which also is
powered from the battery.
Phil
"Steve Thomas" wrote in message
> Dumb question I suppose, but since it is a laptop, why not leave it
> floating?
> (electrically)
>
> "Phil Stanton" wrote in message
>
>> Sorry to post this again, but I have failed to resolve the problem, and
> have
>> more clues.
>>
>> I have a Raymarine ST60 Multi and want to get NMEA data (Wind & Depth)
> into
>> the 9 pin serial port on my laptop. If the laptop is not connected to
>> anything at all (including power supplies) this works fine. If I connect
> it
>> to the boats 12v supply via a cigarette type laptop power supply, or an
>> inverter using the normal laptop power lead I get nothing.
>> Equally if I connect the USB port via a Serial to USB lead to the GPS and
>> AIS input I immediately loose the NMEA input.
>>
>> Kees suggested using an optocoupler which I bought (not cheap) from
>> Active
>> research which looked as if it should do the job. They are boat people
>> and
>> supplied me with a 2 way adapter cable for NMEA In and out to serial
>> plug.
>> Just occasionally with the computer not connected to either external
>> power
>> supplies or to any other equipment a got a little garbled NMEA through.
>>
>> I have replicated everything on my son's laptop, a totally different make
> so
>> I think we can eliminate the computers. I can connect the laptop through
>> a
>> cigarette type laptop power supply to an external car battery and again
>> no
>> problem. If I connect the negative of this battery to the negative of the
>> ship's battery I immediately loose the signal.
>> If, with the computer isolated and the NEMA going in correctly via the
>> serial port I connect the optocoupler input across the NEMA out terminals
> I
>> again loose the signal. Its as if there isn't enough power in the NEMA
>> signal to power anything.
>>
>> 2 other things. If I put a GPS signal into the serial port there are no
>> problems even when the laptop is connected to the ships power supply
>> again
>> confirming that the laptops seem OK and that HyperTerminal is configured
>> correctly.
>> Along with the equipment mentioned above, I also have a Raymarine S1G
> course
>> computer.
>>
>> Has anyone any further ideas
>>
>> Thanks,
>>
>> Phil
>>
>>
>>
>
> >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: Apr 05, 2005
Posts: 84
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(Msg. 5) Posted: Sun May 22, 2005 11:11 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Phil Stanton wrote:
> I can connect the laptop through a
> cigarette type laptop power supply to an external car battery and again no
> problem. If I connect the negative of this battery to the negative of the
> ship's battery I immediately loose the signal.
Sorry, but this still points to ground loops being the problem. The
optocoupler was supposed to solve this...
> If, with the computer isolated and the NEMA going in correctly via the
> serial port I connect the optocoupler input across the NEMA out terminals I
> again loose the signal. Its as if there isn't enough power in the NEMA
> signal to power anything.
Duh, that is strange...
Sorry, no further thoughts! Anybody else?
-- Kees >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: May 26, 2005
Posts: 3
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(Msg. 6) Posted: Tue May 31, 2005 10:14 am
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: May 31, 2005
Posts: 1
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(Msg. 7) Posted: Tue May 31, 2005 10:38 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Phil Stanton wrote:
> First the good news
>
> Cracked it
>
> The so called NEMA output from a Raymarine Multi should be floating, but the
> positive terminal is at 12v; something to do with being able to use the NMEA
> out terminals for an alarm. This as it were "shorts out" the RS232 on the
> laptop
>
> Now the bad news
>
> You need a RayMarine PC/SeaTalk.NMEA Interface (E85001). Cost about £100.
> Yet another RayMarine Con, but it solved the problem
>
> Phil
>
I don't get it, didn't you say earlier you already got a converter that
would convert the RS-422 NMEA output to RS-232?
-- Kees >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: Jul 09, 2003
Posts: 193
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(Msg. 8) Posted: Tue May 31, 2005 11:02 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Quee Queg" wrote in message
> Phil Stanton wrote:
> > First the good news
> >
> > Cracked it
> >
> > The so called NEMA output from a Raymarine Multi should be floating, but
the
> > positive terminal is at 12v; something to do with being able to use the
NMEA
> > out terminals for an alarm. This as it were "shorts out" the RS232 on
the
> > laptop
> >
> > Now the bad news
> >
> > You need a RayMarine PC/SeaTalk.NMEA Interface (E85001). Cost about
£100.
> > Yet another RayMarine Con, but it solved the problem
> >
> > Phil
> >
>
> I don't get it, didn't you say earlier you already got a converter that
> would convert the RS-422 NMEA output to RS-232?
That would still be a problem, since a real RS-422 input has two signal
lines that should be eachother's opposite in level. With the Raymarine
configuration this will not work. Only when the converter has an
opto-coupler input, as specified in the NMEA standard, it would have worked.
Meindert >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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External
Since: Apr 04, 2005
Posts: 14
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(Msg. 9) Posted: Tue May 31, 2005 11:02 pm
Post subject: Re: Connect Raymarine ST60 Multi to laptop [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Tried the OptoCoupler route, but that didn't work
I was under the misapprehension that when the RayMarine ST60 Multi has 2
pairs of terminals marked MNEA In and NMEA Out, that's what you got.
Yes I got so frustrated that I bought their interface as it was costing me a
fortune in time trying to get some sense. The technical department at
Raymarine didn't come up with the solution although it must be pretty common
problem.
Mind the are not very helpful when it comes to their echo sounders either. I
have a lifting keel boat and want to set the offset so that the echo sounder
reads zero with the keel down and just scraping the bottom. Trouble is when
I half lift the keel and go into shallower water I want the echo sounder to
show a negative amount. Of course it just continues to show zero. Yes - I
know I can set it below water line etc, but it's nice to know if the echo
sounder says 1.5m that is actually the "spare" water kicking around under
you, and you don't have to do a calculation. Most of the boats I sail on are
calibrated this way, so its what you see is what you get none of this
business that on John's boat you deduct 1.4 from the depth shown, whilst on
Pets boat deduct 1.8. (We English East Coast sailors are grateful to have
0.3m under us)
"Meindert Sprang" wrote in message
> "Quee Queg" wrote in message
>
>> Phil Stanton wrote:
>> > First the good news
>> >
>> > Cracked it
>> >
>> > The so called NEMA output from a Raymarine Multi should be floating,
>> > but
> the
>> > positive terminal is at 12v; something to do with being able to use the
> NMEA
>> > out terminals for an alarm. This as it were "shorts out" the RS232 on
> the
>> > laptop
>> >
>> > Now the bad news
>> >
>> > You need a RayMarine PC/SeaTalk.NMEA Interface (E85001). Cost about
> £100.
>> > Yet another RayMarine Con, but it solved the problem
>> >
>> > Phil
>> >
>>
>> I don't get it, didn't you say earlier you already got a converter that
>> would convert the RS-422 NMEA output to RS-232?
>
> That would still be a problem, since a real RS-422 input has two signal
> lines that should be eachother's opposite in level. With the Raymarine
> configuration this will not work. Only when the converter has an
> opto-coupler input, as specified in the NMEA standard, it would have
> worked.
>
> Meindert
>
> >> Stay informed about: Connect Raymarine ST60 Multi to laptop |
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