Re: Pinout for current loop interface

2019-08-17 Thread Ethan Dicks via cctalk
On Sat, Aug 17, 2019 at 12:14 PM Charles via cctalk wrote: > >I've never heard of people using DB25 for 20mA, at least historically, > contemporaneous with its widespread actual use. E.g. DEC universally used > 'flat' 8-pin Mate-n-Lok connectors for 20mA serial connections. > > Thanks for the

Re: Pinout for current loop interface

2019-08-17 Thread Nigel Johnson via cctalk
: Chris Hanson Sent: Saturday, August 17, 2019 1:37 PM To: Charles ; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Pinout for current loop interface On Aug 17, 2019, at 9:14 AM, Charles via cctalk wrote: I just hate having to make a custom cable for every terminal and computer I own

Re: Pinout for current loop interface

2019-08-17 Thread Chris Hanson via cctalk
On Aug 17, 2019, at 9:14 AM, Charles via cctalk wrote: > I just hate having to make a custom cable for every terminal and computer I > own or work with ;) Ah, but isn’t doing what so many before you have had to part of the charm? :) -- Chris

Re: Pinout for current loop interface

2019-08-17 Thread Bill Degnan via cctalk
> > Thanks for the comments... I asked mostly because the ADM-3A has both > RS-232 > and current loop interfaces built-in (on the same female DB-25), selected > by > one of the > DIP switches. > > I just hate having to make a custom cable for every terminal and computer I > own or work > I have

Re: Pinout for current loop interface

2019-08-17 Thread Charles via cctalk
I've never heard of people using DB25 for 20mA, at least historically, contemporaneous with its widespread actual use. E.g. DEC universally used 'flat' 8-pin Mate-n-Lok connectors for 20mA serial connections. Thanks for the comments... I asked mostly because the ADM-3A has both RS-232 and

Re: Pinout for current loop interface

2019-08-17 Thread Tony Duell via cctalk
On Sat, Aug 17, 2019 at 4:38 PM Noel Chiappa via cctalk wrote: > > > From: Charles Morris > > > Is there any standard pinout for 20 ma current loop using a DB-25 > > connector, analogous to the well-documents RS-232 serial interface? > > ... > > Or would you recommend I use a

RE: Pinout for current loop interface

2019-08-17 Thread Electronics Plus via cctalk
Subject: Re: Pinout for current loop interface > From: Charles Morris > Is there any standard pinout for 20 ma current loop using a DB-25 > connector, analogous to the well-documents RS-232 serial interface? > ... > Or would you recommend I use a different con

Re: Pinout for current loop interface

2019-08-17 Thread Noel Chiappa via cctalk
> From: Charles Morris > Is there any standard pinout for 20 ma current loop using a DB-25 > connector, analogous to the well-documents RS-232 serial interface? > ... > Or would you recommend I use a different connector entirely? .. Maybe a > Jones 4-pin would make more

Re: Pinout for current loop interface

2019-08-16 Thread Warner Losh via cctalk
On Fri, Aug 16, 2019, 10:56 PM Ethan Dicks via cctalk wrote: > On Sat, Aug 17, 2019 at 12:12 AM Charles via cctalk > wrote: > > Is there any standard pinout for 20 ma current loop using a DB-25 > connector, > > analogous to the well-documents RS-232 serial interface? > > From checking a couple

Re: Pinout for current loop interface

2019-08-16 Thread Ethan Dicks via cctalk
On Sat, Aug 17, 2019 at 12:12 AM Charles via cctalk wrote: > Is there any standard pinout for 20 ma current loop using a DB-25 connector, > analogous to the well-documents RS-232 serial interface? >From checking a couple of devices, I don't think so. Here's how the original IBM Async adapter