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Nmea /dsc

S

speckfisher

Jan 1, 1970
0
I have a new Icom M422 VHF and am trying to connect with a Garmin 18
GPS for the DSC function. I have contacted tech service both Icom an
Garmin and it seems to be properly connected and all of the setting
properly set. I only get a "NO POSITION" reading on my vhf when I go t
ck it . I left it on for about an hour to see if it need time t
initialize but still didn't work . Could it be that somehow they ar
incompatible with each other ? How can I check that? Also is i
possible to check to see if the NMEA in/out are working on both sets?
Any help would be appreciate
 
G

Gordon Wedman

Jan 1, 1970
0
speckfisher said:
I have a new Icom M422 VHF and am trying to connect with a Garmin 182
GPS for the DSC function. I have contacted tech service both Icom and
Garmin and it seems to be properly connected and all of the settings
properly set. I only get a "NO POSITION" reading on my vhf when I go to
ck it . I left it on for about an hour to see if it need time to
initialize but still didn't work . Could it be that somehow they are
incompatible with each other ? How can I check that? Also is it
possible to check to see if the NMEA in/out are working on both sets?
Any help would be appreciated

I just hooked up my JRC Nav 500 GPS to my Standard Horizon VHF. I pushed
the Nav button on the VHF and there was my position, speed, bearing and
date/time. Shouldn't need any sort of initialization and I would not think
the Garmin and Icom would be incompatible.
I find the designations used by the various manufacturers for NMEA data in /
data out to be confusing. You never know if two different manufacturers are
describing things the same way. Its possible you just have the wires hooked
up wrong.
On my setup the GPS had DataOut + and DataIn +. These were the only two
wires I hooked up to the NMEA In / NMEA Out wires on the VHF.

The only other thing I can think of is matching the NMEA output speed from
the Garmin to whatever is spec'd for the VHF.

As for checking for a NMEA data stream, you can do this using a laptop
computer by using Terminal mode. Once again you will be faced with
connecting the correct GPS wires to the correct wires on a serial plug that
goes to the laptop. The manual for your Garmin should tell you which NMEA
strings it outputs. If the GPS is working its likely the NMEA output is
working so I'd concentrate on the connections to the radio.
Good luck.
 
W

William Andersen

Jan 1, 1970
0
Amen.
I have two Garmin's, two VHF radios and a radar. I had to email Garmin for
assistance in wiring for each of them. The good news is that Garmin is quick
to answer email.
I not only told them what equipment I was connecting, but quoted the
manufacturer's instructions, because they don't all use the same
terminology.
Remember to set the Garmin for NMEA/NMEA, and maybe not the fastest speed.
I found that my radar doesn't seem to detect the information at the fastest
speed, but is OK at slower BAUD speeds.
If it's a new Garmin, you may have to manually initialize it. When I travel,
my Garmin sometimes takes a long time to figure out where it is, so I
manually initialize it for the new location.
 
W

Wout B.

Jan 1, 1970
0
speckfisher said:
I have a new Icom M422 VHF and am trying to connect with a Garmin 182
GPS for the DSC function. I have contacted tech service both Icom and
Garmin and it seems to be properly connected and all of the settings
properly set. I only get a "NO POSITION" reading on my vhf when I go to
ck it . I left it on for about an hour to see if it need time to
initialize but still didn't work . Could it be that somehow they are
incompatible with each other ? How can I check that? Also is it
possible to check to see if the NMEA in/out are working on both sets?
Any help would be appreciated

Check in the VHF manual (or ask support) which NMEA sentence is expected by
the VHF. Check if the GPS is configured properly (baud rate 4800, NMEA Out)
and make sure the version of NMEA that you have selected includes the
sentence that the VHF requires.
Wout
 
R

Robert Miles

Jan 1, 1970
0
Under main set-up there is an option to change the interface set-up.
Change it to NMEA out.. don't think there is an option for baud rate.
This will get it going no problems.

Regards

Bob Miles
 
S

speckfisher

Jan 1, 1970
0
Robert said:
Under main set-up there is an option to change the interface set-up.
Change it to NMEA out.. don't think there is an option for baud rate.
This will get it going no problems.

Regards

Bob Miles

"speckfisher" [email protected] wrote in message

I have a new Icom M422 VHF and am trying to connect with a Garmin 182
GPS for the DSC function. I have contacted tech service both Ico
and
Garmin and it seems to be properly connected and all of the settings
properly set. I only get a "NO POSITION" reading on my vhf when I g
to
ck it . I left it on for about an hour to see if it need time to
initialize but still didn't work . Could it be that somehow they are
incompatible with each other ? How can I check that? Also is it
possible to check to see if the NMEA in/out are working on both sets?
Any help would be appreciated
I have the config set the way the Garmin tech. told me on COMM2 .Th
baude rate is not an option to change. The wiring config. should be o
because both the Garmin and Icom techs e-mailed me the wiring diag. an
I feel comfortable that the wiring is ok. The connections should also b
ok because I cut and spliced them about 5 times and still could not ge
anything.
I ck to see if the the gps is communicating with the vhf by pushing th
"POS/DSC" button for a few seconds and it should show my position on th
vhf screen but it shows "NO POS" whitch according to the Icom tech mean
the gps is not communicating with the vhf. I don't if the gps i
receiving from the vhf to plot someone elses position on the vh
screen. I don't know anyone in the area to ck it wit
 
D

Dennis Pogson

Jan 1, 1970
0
I have the config set the way the Garmin tech. told me on COMM2 .

What is this? Didn't know VHS had com ports?
 
W

William Andersen

Jan 1, 1970
0
Both the Garmin and the VHF have two ports.
The VHF has one to receive GPS info from the Garmin, which is displayed on
the VHF and transmitted with DSC, and another to send received info (from a
DSC reception) to the Garmin so that it will be displayed on the Garmin.
 
W

William Andersen

Jan 1, 1970
0
The Garmin instruction manual refers to them as Ports 1 and 2. One sends
data to the VHF, the other receives data from the VHF and plots it.
 
P

Peter Bennett

Jan 1, 1970
0
getting back to Speckfisher's original post, is there a way to test
NMEA out/in with a meter, or do you need a laptop/software to do so?

You can see if an NMEA device is outputting data using a voltmeter. I
prefer an analog meter, but DVMs can also work, unless they are very
slow reading.

Set the meter to read 5 volts, and, if there is data present, you
should see it wiggling - with the voltage varying around 2 - 3 volts.
The data line will acutally switch rapidly between 0 and +5 volts, but
the meter won't be able to follow it.
 
M

Matt Colie

Jan 1, 1970
0
Luc,

Your laptop may have a treminal program installed already, but that may
not be the easiest solution.

You have two easy choices;
GPSUtility at http://www.gpsu.co.uk/
or
http://www.gpsu.co.uk/
both have real good NMEA input screens, but you have to get one (both
can be free), install it, and then find the NMEA input screen.

Matt Colie
 
L

Larry

Jan 1, 1970
0
I have the exact same problem and have found no solution.

I just can't stand to stay out of this any longer, remembering the grief
I went through with Icoms and Raymarines and Garmins on
Lionheart....sorry....

I downloaded the Icom M422 manual and note on page 15 it, very casually,
mentions you need NMEA 0183 version 2.0 or 3.01 (and no others?) data
from your GPS, neither of which, of course, old GPS receivers will
generate with their version 1.0 or 1.1 NMEA 0183 generators.
No mention is made of what baud rate or bit stream or stop bit it can
read, so we'll assume 4800 baud 8-N-1 is compatible.....for now.

Now, over on the Garmin 182, now considered "obsolete" by Garmin and
their NMEA buddies, on page 98 they want to connect port 2, the green
wire, to the Icom's NMEA input lead some idiot colored RED just so
someone would try to use it for POWER IN, red being the color of every
other power lead in the boat. Idiots! So, Garmin's green wire to Icom's
red wire, and of course everything grounded together, you hope, so let's
connect Garmin's black "ground" wire to Icom's negative power lead, just
in case the Japanese have reverted back to their love of positive-ground
devices...something they just have never gotten over. Lots of Jap stuff
still has the case ground isolated from negative for "home use" in Japan.
This, in itself, might stop the data from showing up...

On page 73, it says the Garmin supports "standard NMEA 0183 data", making
no mention of what VERSION this data is
Oops...page 99. The Garmin is NMEA Version 3.0, probably close enough to
the Icom's 3.01 to get the data.

You NMEA subscribers...what's the differences between 3.0 and 3.01?

Ok....question.....HAVE YOU PUT IN YOUR MMSI INTO THE ICOM 422 FOR YOUR
BOAT? I believe you'll find DSC is DISABLED until a valid MMSI is
programmed in FIRST to the unit, successfully.

Let's start on pg 13 of the Icom manual and program in your MMSI,
CAREFULLY AS YOU ONLY GET TWO SHOTS AT IT! If you lock the unit screwing
around entering bogus MMSIs, the unit must be returned to Icom to reset
the processor before it will accept any more MMSI numbers, rendering it
useless to try to resell to another boater...another NMEA member feature
to maximize profits. With your MMSI in it...the radio becomes useless to
anyone else.

If you don't have an MMSI, don't go any further until you get one from
Boat/US or off your ship license from FCC....and program it into the
M422.

Ok, MMSI is programmed in, Garmin is on and locked to the birds, what do
you see on the Icom display? Is the little GPS sign blinking or solid?
Blinking means GPS data IS being received, but is invalid, according to
page 15, bottom right column of the Icom manual. Garmin puts out 3 of
the 4 sentences the Icom is looking for RMC, GGA, GLL. It should have
picked RMC first, no problem. No go?......

Hmm....Let's toss caution to the wind and connect the Icom's red NMEA
input wire to the Garmin port 1 green output wire and try it. Set the
Garmin port 1 to NMEA IN/OUT. Maybe port 2 is "bad", or the cable is
screwed. Won't hurt to look at the other port. Icom respond to port 1?

Although the Garmin's manual is written for 6-year-olds and makes no
mention of changing the NMEA output baud rate, I think you can on the
advanced NMEA page of the System tab. Try switching its NMEA output to
1200 baud and see if the Icom can see that, too.

Well? Let us know what you find out and if anything we've all said did
anyone any good.....thanks.
 
L

Larry

Jan 1, 1970
0
what is a terminal program? remember, you are dealing with someone who
knows NOTHING!

thanks for great information. Some day, I may actually get it!

Luc

If you have a new computer, there won't be any serial port on it to play
with. USB has replaced old RS-232 and 422 ports on most all computers,
now, thank you manufacturers.

If you do have a serial port, a 9-pin serial port, you can hook the
Garmin to it by hooking the port 2 Garmin (green wire) to the serial
port's data input on pin 2 (pin 3 on the 25 pin old USB connector). The
pinout of serial RS-232 (and other info) is great on:
http://www.arcelect.com/rs232.htm

You can also buy a 9-pin serial port to USB converter cable for $50 from:
http://www.etronics.com/product.asp?stk_code=gar1031000&sbvname=293
or other places on the net. This is a way to get the archaic NMEA system
hooked to a new laptop computer with only USB ports on it so the nav
software will work with it.

Ok, Garmin green wire is hooked to pin 2 of the 9-pin serial port, Garmin
ground's black wire is hooked to pin 5 of the 9-pin serial port as shown
in the webpage's great picture. Now we need a "terminal program" to put
it on the screen for us.....

In Win XP click START - PROGRAMS - ACCESSORIES - COMMUNICATIONS and click
up HYPERTERM, Microsoft's dumbest dumb terminal program. Ignore it
asking you to make it the telnet program it wants to be, click NO. Then,
ignore it asking you to give it a name for this connection, click the
popup window's X to close it.

Click FILE at the top of Hyperterminal, then PROPERTIES to bring up the
New connection properties window. The Connect To tab is on top. Click
the arrow on the right side of line CONNECT USING and pick the com port
you're using. I only have COM3 on my Emachines mainframe. Ok, the other
stuff for dialup modems greys out and now click CONFIGURE button to bring
up the port settings page. Micro$not's system is too stupid to sync on
any com port speed, so you have to pick it. Pick 4800 Bits per second, 8
data bits, NONE parity, 1 stop bit and Flow control set to NONE so
Hyperterm ignores normal serial port flow control connections stupid NMEA
doesn't support. Click APPLY then OK. Click OK, again to close the
original popup window and at the bottom of the main Hyperterminal window
you should see:
Disconnected....Auto detect....4800 8-N-1...and some greyed out stuff.
If it says this, the screen will fill with NMEA sentences very rapidly if
the Garmin is talking to it. If it's working, click FILE then SAVE AS
and give it a name like GARMIN TEST PORT and a filename to save this
configuration to disk so you can just click it up next time you want to
look. Hyperterm is now listening to the COM port and typing whatever it
hears, even gibberish or binary gibberish or Garmin gibberish to anything
connected to it...at 4800 baud.

You now are using DOS 1.0's dumb terminal program from 1981...(c;

If you REALLY wanna see Hyperterm go crazy, pick one of the USB ports
something fast is connected to, like your USB mouse or webcam! It's all
gibberish...(c;

To give the grandchildren something to do, hook it to the USB keyboard
port so they can have type and read practice....

Did that help? I should be in tech support!...(c;
 
J

Jack Erbes

Jan 1, 1970
0
luc said:
what is a terminal program? remember, you are dealing with someone who
knows NOTHING!

thanks for great information. Some day, I may actually get it!

Hyperterminal is included with Windows and will work. Tera Term is a
better program and is a freeware.

Jack
 
G

Gordon Wedman

Jan 1, 1970
0
Larry said:
[email protected]:

SNIP

Ok....question.....HAVE YOU PUT IN YOUR MMSI INTO THE ICOM 422 FOR YOUR
BOAT? I believe you'll find DSC is DISABLED until a valid MMSI is
programmed in FIRST to the unit, successfully.

SNIP

Not the case with my Standard Horizon. I have done nothing with MMSI and I
was able to get position data from my JRC GPS onto the SH with no trouble.
 
L

Larry

Jan 1, 1970
0
Not the case with my Standard Horizon. I have done nothing with MMSI
and I was able to get position data from my JRC GPS onto the SH with
no trouble.

He's not running a Standard Horizon. He's running a new Icom.
 
S

speckfisher

Jan 1, 1970
0
Gordon said:
"Larry" [email protected] wrote in message
Tailgunner [email protected] wrote in [email protected]:


SNIP


Ok....question.....HAVE YOU PUT IN YOUR MMSI INTO THE ICOM 422 FO
YOUR
BOAT? I believe you'll find DSC is DISABLED until a valid MMSI is
programmed in FIRST to the unit, successfully.


SNIP

Not the case with my Standard Horizon. I have done nothing with MMS
and I
was able to get position data from my JRC GPS onto the SH with n
trouble.

I do have the MMSI in the radio and have checked my wiring countles
times. Garmin emailed me back again and I was told to try to connect t
COM1 and that should fix it ,but it didnt . The baud rate is not a
option
to change on the Garmin . It will highlight but when I try to change i
nothing happens. I have been waiting 2 days now for Icom to e-mail m
back and tell me where to take the radio in for service. On the las
e-mail the tech said if the wiring config. he gave me didn't work th
M422 could be bad. I don't want to send it back to Icom if I can hel
it . I saw a Icom service center about 5 miles from my house I wonde
if since the radio is so new if I can take it there
 
J

John Proctor

Jan 1, 1970
0
He's not running a Standard Horizon. He's running a new Icom.

Larry,

While we don't have the 422 down here in Aus we do have other ICOM DSC
radios such as the 302 et al. They do not need an MMSI to be able to
digest the NMEA sentances from other gear (e.g Raymarine, Furuno etc).
My bet is the Garmin is at fault or the wiring to the radio. ICOM tends
to be pretty bullet proof!
 
G

Gordon Wedman

Jan 1, 1970
0
Larry said:
He's not running a Standard Horizon. He's running a new Icom.

Yes, I realize that but the way you wrote your statement sounded like you
thought it applied to all radios. I just pointed out that was not the case.
 
L

Larry

Jan 1, 1970
0
I saw a Icom service center about 5 miles from my house I wonder
if since the radio is so new if I can take it there.

He may be able to read the Garmin output data, too, if you can carry it and
its manual to him. It's worth a shot....
 
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