New electronics -- NEMA question
 

On Wed, 21 Feb 2007 17:10:32 -0800, Josh Assing
wrote:

Can you hook up a laptop and see what form the sentences take from
hardware "X" ?

I could; if I knew which way to plug in a wire to a com port....

http://www.airborn.com.au/rs232.html

New electronics -- NEMA question
 

Can you hook up a laptop and see what form the sentences take from
hardware "X" ?

http://www.airborn.com.au/rs232.html

Thanks Wayne -- i'll try to make up a cable and see what I see....

I'm just unclear about which nema ground to go to which pin -- I figure I can do
the nema out goes to the data in (pin #2)



--- AntiSpam/harvest ---
Remove X's to send email to me.

New electronics -- NEMA question
 

On Wed, 21 Feb 2007 19:53:20 -0800, Josh Assing
wrote:

I'm just unclear about which nema ground to go to which pin -- I figure I can do
the nema out goes to the data in (pin #2)

I've done this in the past and gotten it to work without too much
difficulty. If it doesn't work on 2, try 3.

The other headache is trying to orient yourself with respect to the
connector shell drawings and/or reading the microscopic pin numbers on
the connector. A good magnifying glass can help.

New electronics -- NEMA question
 

Thanks; I'll porbably head off island and pick up a db9 connector tomorrow.

"stay tuned"

-j


On Wed, 21 Feb 2007 23:36:02 -0500, Wayne.B
wrote:

On Wed, 21 Feb 2007 19:53:20 -0800, Josh Assing
wrote:

I'm just unclear about which nema ground to go to which pin -- I figure I can do
the nema out goes to the data in (pin #2)

I've done this in the past and gotten it to work without too much
difficulty. If it doesn't work on 2, try 3.

The other headache is trying to orient yourself with respect to the
connector shell drawings and/or reading the microscopic pin numbers on
the connector. A good magnifying glass can help.


--- AntiSpam/harvest ---
Remove X's to send email to me.

New electronics -- NEMA question
 

To answer your question, you can read the data on your PC using the
hyperterminal utility under Programs Accessories Communications.
You will need a serial cable and working COM port.

Settings are usually 4800 baud, 8 data bits, no parity.


Well; to the group -- here's my progress...

I grabbed my old garmin 12xl (for which I have a serial cable to test with)
set it to NEMA/NEMA and plugged it into my laptop. This was just so I could
test it out to be sure I coudl see "something" before hauling stuff to the boat

I couldn't get HyperTerminal to work -- just kept telling me it oculdn't
communicate with my serial port.

I found an old copy of "Tera Term" and loaded it up -- as soon as I did; data
just started flying across the screen. Nothing I could understand, but it WAS
data.... (for anyone interested: http://jassing.com/temp/12xl.data, the "break'
in the data was when I disconnected the unit to be sure I was reading the 12xl
not something else)

SO!!! I'm on track; now I"ll bring down the cable & laptop to the boat & plug it
into the vhf radio to see what kind of data I read.

Anyone know how to decode the sentences?

-j


--- AntiSpam/harvest ---
Remove X's to send email to me.

New electronics -- NEMA question
 

On Thu, 22 Feb 2007 07:11:59 -0800, Josh Assing
wrote:

Thanks; I'll porbably head off island and pick up a db9 connector tomorrow.

I find it easier to buy a ready made cable with the right kind of
connector already on it.

Cut the cable and use an ohmmeter or continuity checker to figure out
which wires go to which pins. Unfortunately there doesn't seem to be
a color code that is universally recognized.

New electronics -- NEMA question
 

"Wayne.B" wrote in message
...
On Thu, 22 Feb 2007 07:11:59 -0800, Josh Assing
wrote:

Thanks; I'll porbably head off island and pick up a db9 connector
tomorrow.

I find it easier to buy a ready made cable with the right kind of
connector already on it.

Cut the cable and use an ohmmeter or continuity checker to figure out
which wires go to which pins. Unfortunately there doesn't seem to be
a color code that is universally recognized.


There is a color code, but on RS232 cables 2 & 3 can be crossed, or straight
through. A null modem cable has the transmit and receive lines crossed and
they may have some of the other control lines also.
The color code is from the old resistor markings.
Biloxi = Black = 0
Booze = Brown = 1
Rots = Red = 2
Our = orange = 3
Young = yellow = 4
Guts = green = 5
But = blue = 6
Vodka = violet = 7
Goes = grey = 8
Well = white = 9
get = gold = 1% tolerance
some = silver 10%
Now = none = 20%

This is one of the acceptable poems to remember it by.

New electronics -- NEMA question
 

On Thu, 22 Feb 2007 11:48:18 -0500, Wayne.B
wrote:

I find it easier to buy a ready made cable with the right kind of
connector already on it.

I went one better -- used my old 12xl - pc cable -- nema, 4 pins -- known
pinout -- easy to shove a couple of wires in there.

Now -- that said --
that DEFINATELY helped --- while I couldn't undersetand the information being
sent to the display -- I saw that some data was being sent. This is good!

so it proved the radio was sending data. I traced teh wires & found a break in
the wire to the gps -- now the gps is getting DSC data.

I'm a little bummed that the PS2000 doesn't send dsc data when a general call
comes in. It appears to only send data when another system responds to a
"position request" or it receives a "distress call" -- otherwise, it sits
quietly....

I liked my old radio that sent sentences when any dsc call was made, you could
then use the gps as a "call log" for easily seening calls that were missed.
ANyway; not worth swapping out now!

Thanks to everyone -- the using a serial cable trick was definately a ticket to
help debug it.

-josh


--- AntiSpam/harvest ---
Remove X's to send email to me.

New electronics -- NEMA question
 

This is one of the acceptable poems to remember it by.


I have to ask.... what are the unacceptable poems?

--- AntiSpam/harvest ---
Remove X's to send email to me.

New electronics -- NEMA question
 

via email

"Josh Assing" wrote in message
...
This is one of the acceptable poems to remember it by.


I have to ask.... what are the unacceptable poems?

--- AntiSpam/harvest ---
Remove X's to send email to me.