16 Jun
2013
16 Jun
'13
5:37 p.m.
On Sun, 16 Jun 2013, Tony Duell wrote:
The term "chocolate blocks" isn't common on the US side of the pond. The
industry term I often see used for them is 'lustre terminals'. Lustre
terminals themselves aren't commonly used in the US though, and the black
phenolic (Bakelite) plastic barrier strips tend to be more common. Part of
the reason could be that in the US, fixed in place mains wiring is most
commonly spliced using wire nuts and not terminal strips. Terminating
stranded wiring with wire ferrules is also not common in the US, unless
you are dealing with industrial controls and process equipment.
They make small DIN-rail mountable breakout boards that have 2.54mm
(.100") headers for IDS/ribbon cable connectors that break each pin out to
individual screw terminals that might work well for this sort of thing too
(Weidmuller RI-xx, Phoenix Contact FLKM etc).
I'm trying
to free up slots in my PDP-11, so I'm looking to remove the DL11=
's I'm using=0A=
and want to replace them with a single 20ma DZ11.=A0 Does anyone have a DZ1=
Firstly, I am probably telling you what you already know, but the DZ11
and DL11 are totally different in software. If you are doing anything out
of the ordinary and have sustom drivers you ahve a lot of work ahead.
1 20ma=0A=
dist panel they'd part with?=0A=
Soecondly, IIRC the disptribution panel is essentially just connectors. I
have a few of the even older DJ11 muxes and a couple of the distirbution
panels were home-made. Berg conenctors on a bit of square pad board with
wire-swap wire goign off to what we call 'chocolate blocks' [1]. Looks a
right msess, but apprently it was used at a university to conenct up
ASR33s for many years with no problems.
[1] Does that term mean anything to you? It's a common term over here for
thos plastich screw terminal blocks Modern ones are norally white,
flexible plastic (nylon?) the very old ones were a brown brittle themoset
plastic, hence the name.
Given that the current loop signals are pretty low speed, you would
almost certainly get away with taking a length of ribbon cable, putting a
BERG socket on one end, splitting the other end into individual wires and
puttign them on screw terminals.