[GreenKeys] USB-teletype Report on Win 10

Mon May 9 15:39:39 EDT 2016

we need to  find  cheap wall warts that put out 100  v    for  tty  loop....
there has to be something......

Ed#

In a message dated 5/9/2016 12:35:41 P.M. US Mountain Standard Time,  
greenkeys at mailman.qth.net writes:

confused....  no giant resistor on the board.  what    board are  we  
discussing? do you mean  r9?  that little  thing is  really  2  watt?    ok.... 
remember I  am used to stuff  with color bands on them  have no   experience  
with surface mount  stuff <<grin!>>

ok  on the baud  rate I mean the  usb  seemed to auto  baud, i one  machine 
 set  term program  for   9600 baud and it  worked

other  system i walked th board over to tem program set   for  2400 baud 
and it  worked

which means the usb auto senses the   terminal program  baud  rate>?

In a message dated 5/9/2016 11:33:56 A.M. US Mountain Standard Time,  
epvgk at limpoc.com writes:

On  Mon, May 09, 2016 at 04:18:02AM -0400, COURYHOUSE at aol.com wrote:
>  Eric -  et al...
>  
> 1- WIN-10 - Seems  to  talk  fine  to  board without  installing the  
little  
> inf  file like I did on  the win 7   system  .... unless it  just  found 
it 
> on  the  memory  stick...  but I did not manualy install anything  else...
> It does seem  to install to com 4 rather than com 6 as  on the XP  
machine 
> but  talks to the board with the  flashing lights and also the setup  
menu.
>  
> 2 - I  was surprised it seed  the board  autobaud'ed  with   the   hyper 
> term... I transferred HYPERTERM as an  experiment   from my Windows XP 
system and 
> seems to run  on win 7 and  win 10 fine.
>  
> 3 -  explain  the  resistor in series  with the loop in  detail...   what 
# 
> of Ohms and  wattage  20 mil what  size   for 60 mil loop... and what 
voltages 
>  for each?
>   
> Still   want to hook  to the tty!  but all  this  pre-testing  is  fun too

Ed, 

Whether or  not it needs the INF file appears random to me. Sometimes it 
does,  sometimes
it doesn't. 

The baud rate is configured only via the  setup menu. Windows' idea of the 
baud rate
is completely ignored because  Windows has no concept of most TTY baud 
rates. The info
sheet shipped  with the board goes into this in more detail. 

The resistor in  question is the big rectangular one on the top left part 
of the
board. It  is in series with the loop and samples the loop current as part 
of a  divider,
stealing just enough power to turn on the input of an  optocoupler. It is a 
2-watt,
150 ohm resistor. 

You do not need to  change it unless you are doing something really 
unusual. It will 
work  for both 20ma and 60ma loops as is. The voltage across that resistor 
will  be, 
by Ohm's law, approximately the loop current multiplied by the  resistance 
(150 ohms).

eric

>  
>   
> Ed#   _www.smecc.org_ (http://www.smecc.org)   
>  
>  
>  
>  
> In a  message dated 5/2/2016 1:39:27 P.M. Mountain Standard Time,  
>  epvgk at limpoc.com writes:
> 
> Hi Folks  - 
> 
>  The CL adapter boards are available and I'm adding them to the  Square  
> online store 
> inventory as I get them programmed and QA'd.  The  production and QA 
> departments are 
> both staffed  by lazy, shiftless  employees, all of which are me, so if 
it 
>  shows as 
> being out of stock, just  try again later. I'll  update if/when all 80+ 
are 
> really
> sold  out.
>  
> Price is dropped from $40 to $37 and I'm trying for next  business  day 
> shipping if
> possible, depending on the  line at the post office on my  way to work or 
if 
> i get
>  swamped.
> 
> Store URL is:   https://squareup.com/store/epv-greenkeys
> 
> Documentation,  source code,  buglist, etc are at: 
>  http://heepy.net/index.php/USB-teletype
> 
> There are   also a few RTTY demod boards left, if you missed out last 
time. 
>  NOTE: If  you want an item and aren't in the US, email me. Square  
doesn't 
> appear to  
> handle international sales in any  useful way. We'll figure something 
out.  
> 
> I was hoping  to be able to include a USB cable, but didn't manage to  
find 
>  a 
> reasonably priced bulk option so you will need to have or get a  USB  
Mini-B 
> cable  like:
>  http://www.amazon.com/AmazonBasics-USB-2-0-Cable--Male/dp/B00NH13S44
>  
> Thanks,  
> eric
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