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 comm
- From: 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
compu
t 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 or work with ;)
Ah, but isn’t doing what so many before you have had to part of the charm?
:)
-- Chris
---
This email has
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
>
> 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 s
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 curren
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 d
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
> 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 sen
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 o
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 for
Is there any standard pinout for 20 ma current loop using a DB-25 connector,
analogous to the well-documents RS-232 serial interface?
My PDP-8/A drives an ASR-33, and having just restored an ADM-3A I want to be
able to unplug the TTY and plug in the ADM.
I somewhat arbitrarily put the transmit
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