Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Chris Albertson
You are right, pushing high speed signal over long distances is not an easy task. It is no coincidence that the faster electronics are also physically smaller. With a given technology the way to go faster is to get smaller. This applies to CPU chips and also cables. On Sat, Dec 24, 2016 at

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Gene Heskett
On Saturday 24 December 2016 16:44:53 Bertho Stultiens wrote: > On 12/24/2016 09:59 PM, Chris Albertson wrote: > > Read the little write up at the Mesa site about cable length. They > > claim ribbon cable is the worst and to only use it for very short > > runs, 2 or 3 feet at most. They

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Bertho Stultiens
On 12/24/2016 09:59 PM, Chris Albertson wrote: > Read the little write up at the Mesa site about cable length. They > claim ribbon cable is the worst and to only use it for very short > runs, 2 or 3 feet at most. They suggest using "real" parallel > cables made with twisted pairs and

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Chris Albertson
Read the little write up at the Mesa site about cable length. They claim ribbon cable is the worst and to only use it for very short runs, 2 or 3 feet at most. They suggest using "real" parallel cables made with twisted pairs and shielding for longer runs. Using one of their fancy IEEE

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Gene Heskett
On Saturday 24 December 2016 12:40:43 Bertho Stultiens wrote: > On 12/24/2016 01:20 PM, Gene Heskett wrote: > > If that fails, I'll quit beating my head with a hammer and reset > > this 7i90 to an epp interface and go back to an x86 computer to > > drive it, but that brings up the next $64K

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Bertho Stultiens
On 12/24/2016 01:20 PM, Gene Heskett wrote: > If that fails, I'll quit beating my head with a hammer and reset this > 7i90 to an epp interface and go back to an x86 computer to drive it, but > that brings up the next $64K question. The big old Dell I have to drive > it with isn't swarf proof

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread John Thornton
Merry Christmas Gene. JT On 12/24/2016 9:58 AM, Gene Heskett wrote: > On Saturday 24 December 2016 09:41:48 John Thornton wrote: > >> Hi Gene, >> >> You could use this: >> >> http://mesaus.com/index.php?route=product/product=71_id=5 >> 9 >> >> with this: >> >>

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Gene Heskett
On Saturday 24 December 2016 09:41:48 John Thornton wrote: > Hi Gene, > > You could use this: > > http://mesaus.com/index.php?route=product/product=71_id=5 >9 > > with this: > > http://mesaus.com/index.php?route=product/product=71_id=7 >0 > > To get 7' between the 7i90 and the PC. > > JT The

Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread John Thornton
Hi Gene, You could use this: http://mesaus.com/index.php?route=product/product=71_id=59 with this: http://mesaus.com/index.php?route=product/product=71_id=70 To get 7' between the 7i90 and the PC. JT On 12/24/2016 6:20 AM, Gene Heskett wrote: > Greetings folks; > > This is a heck of a

[Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

2016-12-24 Thread Gene Heskett
Greetings folks; This is a heck of a thing to throw out on Christmas Eve. I am about burned out on trying to make the raspi 3b work. I saw it work once, for about 2 days, then an update blew it up by replacing the rt kernel, and it has not worked since. In the sd cards I've made since,

Re: [Emc-users] EDM machining --> g-codes

2016-12-24 Thread Nicklas Karlsson
I started to write down whatever g-codes I can find in different dialects in table form. 1. Linuxcnc, will also look for the ones you supplied. 2. Sodick wire EDM. 3. Charmilles sinker EDM. Yesterday I figured out three dimensions where required so I started to enter in a database but