Comm's problems

N

Norman

Guest
If two different bits of equipment are communicating between each other via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this tester
show at wich end the com failure was ?
 
It's called a serial protocol analyser. Check in to Fluke and HP for
details.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Norman" <stayforthedayandgo@yahoo.com> wrote in message
news:voqopek6hn5u7d@corp.supernews.com...
If two different bits of equipment are communicating between each other via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this tester
show at wich end the com failure was ?
 
On Wed, 15 Oct 2003 16:20:09 +0100, Norman hath writ:
If two different bits of equipment are communicating between each other via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this tester
show at wich end the com failure was ?
Click to expand...
http://blackbox.com/

Then drill down under "Products".

I guess they are too "involved" in creating Flash eye-candy
to put a search engine on the site.
You could try Google -- using site:blackbox.com

HTH
Jonesy
--
| Marvin L Jones | jonz | W3DHJ | OS/2
| Gunnison, Colorado | @ | Jonesy | linux __
| 7,703' -- 2,345m | config.com | DM68mn SK
 
Allodoxaphobia wrote:

On Wed, 15 Oct 2003 16:20:09 +0100, Norman hath writ:
If two different bits of equipment are communicating between each other
via RS232 line drivers ............ is it possible to connect up some
sort of tester to check the communications ?

If there was a definate fault in one of these line drivers would this
tester show at wich end the com failure was ?

http://blackbox.com/

Then drill down under "Products".

I guess they are too "involved" in creating Flash eye-candy
to put a search engine on the site.
You could try Google -- using site:blackbox.com

HTH
Jonesy
Click to expand...
Black box? *VERY* pricey...

I have a file here somewhere that alleges to let you make such a device out
of any old XT-class machine that has two serial ports...

Aside from that, you can get a little test light at Radio Shack (though I
got mine, the identical unit, mail-order at about half the price). Plug
it inline, first to one device, then the other, and it'll show you
what's going on to some extent.
 
You might be able to check each item out separately with a serial port
tester and a loopback connector.
The most simple testers have LEDs for Tx, Rx, RTS and a couple of others.

Beckman had a series of these that were a little more sophisticated, called
Breakout Boxes, and they still use LEDs.

WB
...................

"Norman" <stayforthedayandgo@yahoo.com> wrote in message
news:voqopek6hn5u7d@corp.supernews.com...
If two different bits of equipment are communicating between each other
via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this
tester
show at wich end the com failure was ?
Click to expand...
 
On Wed, 15 Oct 2003 16:20:09 +0100, "Norman"
<stayforthedayandgo@yahoo.com> put finger to keyboard and composed:

If two different bits of equipment are communicating between each other via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this tester
show at wich end the com failure was ?
Click to expand...
Monitor the individual pins with a scope. The signal levels should
swing between +/- 12V (or whatever the supply rails are).


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
Perfect scenario for using a breakout box. A breakout box will also allow
you to rewire the port as a null modem adaptor or loopback. In my opinion,
it's a key tool for serial communications.

"Norman" <stayforthedayandgo@yahoo.com> wrote in message
news:voqopek6hn5u7d@corp.supernews.com...
If two different bits of equipment are communicating between each other
via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this
tester
show at wich end the com failure was ?
Click to expand...
 
OK, lots of different things that plug into computer serial ports.

My drivers only use two lines for Tx and two for Rx .. does this change
anything ?
(these line drivers are not in a PC and not connected to a standard serial
port)
 
You can get a decent breakout box for under $20 with LEDs monitoring the
lines and jumpers to rewire. It's a very easy and effective tool even if the
wiring is custom. You can also use it to monitor the data with a scope.
Information on the RS232/422 standards are abundantly available on line.

"Norman" <stayforthedayandgo@yahoo.com> wrote in message
news:vosv2s2rue8mf8@corp.supernews.com...
OK, lots of different things that plug into computer serial ports.

My drivers only use two lines for Tx and two for Rx .. does this change
anything ?
(these line drivers are not in a PC and not connected to a standard serial
port)
Click to expand...
 
Catalogs. Surplus stores. Etc. They're out there.

"Roy J. Tellason" <rtellason@DONTSPAM MEpa.net> wrote in message
news:fhBjb.294$jg7.244093@newshog.newsread.com...
Chris wrote:

Information on the RS232/422 standards are abundantly available on line.

Where?
Click to expand...
 
I just got an e-mail from Fluke saying that ..................

" have checked with uur technical helpdesk and we do not make test equipment
for this application."



"Jerry G." <jerryg50@hotmail.com> wrote in message
news:bmjrv6$n0c$1@news.eusc.inter.net...
It's called a serial protocol analyser. Check in to Fluke and HP for
details.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Norman" <stayforthedayandgo@yahoo.com> wrote in message
news:voqopek6hn5u7d@corp.supernews.com...
If two different bits of equipment are communicating between each other
via
RS232 line drivers ............ is it possible to connect up some sort of
tester to check the communications ?

If there was a definate fault in one of these line drivers would this
tester
show at wich end the com failure was ?
Click to expand...
 
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