Re: Winchester-style coax connectors?

[Josh Dersch]

On 12/2/16 8:29 AM, Jon Elson wrote:



On 12/01/2016 01:27 PM, Josh Dersch wrote:

  but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).


These pins MIGHT be compatible with AMP pins for the "M" series of 
connectors.  If so, I have some of these pins at work that we will 
likely never use.  If you can send a photo of the end you have I can 
see if it looks like it might work.


Jon



Here's a pic of a real Imlac video cable (not mine):

http://yahozna.dyndns.org/scratch/imlac/cable1.jpg

Pins P, J and R are the coaxial pins.

And here's a pic of the male side:

http://yahozna.dyndns.org/scratch/imlac/cable2.jpg

If you do have any that look like they will work, let me know.  I think 
I may have tracked down the part (thanks to those here and a fellow who 
responded off-list, see page 15 of 
https://3o9g5a3i56xc3au70w1rfrdv-wpengine.netdna-ssl.com/wp-content/uploads/2016/09/C009RevD_StdDenRec.pdf).



Thanks,
Josh

Re: Winchester-style coax connectors?

[Jon Elson]

On 12/01/2016 01:51 PM, Josh Dersch wrote:


Like one of these bad-boys, only with 14 connectors rather than 34:

http://cables24.com/en/others/cable-v-35/1470-V-35-m34-Winchester-34pin-male-connector

Sorry for not being more specific.  The coax connectors in a 13W3 connector
(for example) are much larger than what I need.

- Josh

Yup, that's an M connector, and industry compatible.  In fact, Newark 
still stocks the standard stuff in AMP (Now Tyco, I guess). I use that 
34-pin size to make NIM modules.  Newark may also stock the coax pins, 
but I know they have the single-contact pins.


The holes in the housing and the springy fingers are all standardized, 
so AMP parts will fit Winchester shells, etc.


Jon

Re: Winchester-style coax connectors?

[Jon Elson]

On 12/01/2016 01:27 PM, Josh Dersch wrote:

  but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).


These pins MIGHT be compatible with AMP pins for the "M" series of 
connectors.  If so, I have some of these pins at work that we will 
likely never use.  If you can send a photo of the end you have I can see 
if it looks like it might work.


Jon

Re: Winchester-style coax connectors?

[Pete Lancashire]

Can you take a  picture of the side you have ? I have a few

On Dec 1, 2016 11:27 AM, "Josh Dersch"  wrote:

Hey all --

Due to a small miracle I now have 8KW of perfectly functioning core in my
long-ill Imlac PDS-1D.  The last hurdle is devising a replacement for the
missing display (an X/Y vector display).  For the time being I'm going to
attempt to use an oscilloscope, but first I need to build a cable.

The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).

I haven't been able to track these connectors down anywhere.  Anyone have
any ideas?

Failing that, I can always just tap into the backplane to pick up these
signals and ignore the connector on the bulkhead, but it would be nice to
be able to use the original connector...

- Josh

Re: Winchester-style coax connectors?

[jim stephens]

On 12/1/2016 11:51 AM, Josh Dersch wrote:

On Thu, Dec 1, 2016 at 11:47 AM, Paul Koning  wrote:


On Dec 1, 2016, at 2:27 PM, Josh Dersch  wrote:

...
The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).

What is a "Winchester connector"?  Do you mean a D-sub connector, i.e.,
with a trapezoidal shell such as you find on terminal or VGA connectors?
Those come in a number of widths, with names like DE (for the VGA size), or
DB (the 25 pin classic RS-232), and so forth.  Often, incorrectly, all are
called DB.

Those shells have a variety of choices for pins.  They may be two rows of
pins (e.g., DB-25), or 3 rows (e.g., DE-15).  You may also find ones that
have just miniature coax inserts, or a mix of coax and plain pins.  The
coax inserts are generally larger, such that it takes up much of the height
of the connector.  I haven't seen coax pins that are the same diameter as
plain signal pins, that's rather hard to imagine especially for something
as old as an Imlac.  Examples of mixed pin D-sub connectors are the Sun
video monitor connectors, with RGB on coax.

 paul




Like one of these bad-boys, only with 14 connectors rather than 34:

http://cables24.com/en/others/cable-v-35/1470-V-35-m34-Winchester-34pin-male-connector

Sorry for not being more specific.  The coax connectors in a 13W3 connector
(for example) are much larger than what I need.

- Josh
Try Electro Mavin.  He's been buying and squirreling away connectors for 
40 or 50 years.  I don't know any other vendor with as much stock as he has.


You may need to bull  your way thru to him or his daughter or other 
person in the know for connectors, but he is your best shot.


http://www.mavin.com/

I've seen him pay serious money for connectors at various swap meets 
around LA and in other transactions where connectors were up for grabs.


thanks
jim

Re: Winchester-style coax connectors?

[Tom Uban]

Have you considered using a vector arcade game monitor?

On 12/1/16 1:27 PM, Josh Dersch wrote:
> Hey all --
> 
> Due to a small miracle I now have 8KW of perfectly functioning core in my
> long-ill Imlac PDS-1D.  The last hurdle is devising a replacement for the
> missing display (an X/Y vector display).  For the time being I'm going to
> attempt to use an oscilloscope, but first I need to build a cable.
> 
> The Imlac uses a Winchester connector (14 position) for the display and
> while they're not as common these days the parts can still be found so I
> thought I was in the clear, but what I failed to notice is that three of
> the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
> connectors that fit within the Winchester housing (i.e. they're the same
> diameter as a Winchester pin).
> 
> I haven't been able to track these connectors down anywhere.  Anyone have
> any ideas?
> 
> Failing that, I can always just tap into the backplane to pick up these
> signals and ignore the connector on the bulkhead, but it would be nice to
> be able to use the original connector...
> 
> - Josh
> 

Re: Winchester-style coax connectors?

[Josh Dersch]

On Thu, Dec 1, 2016 at 11:47 AM, Paul Koning  wrote:

>
> > On Dec 1, 2016, at 2:27 PM, Josh Dersch  wrote:
> >
> > ...
> > The Imlac uses a Winchester connector (14 position) for the display and
> > while they're not as common these days the parts can still be found so I
> > thought I was in the clear, but what I failed to notice is that three of
> > the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
> > connectors that fit within the Winchester housing (i.e. they're the same
> > diameter as a Winchester pin).
>
> What is a "Winchester connector"?  Do you mean a D-sub connector, i.e.,
> with a trapezoidal shell such as you find on terminal or VGA connectors?
> Those come in a number of widths, with names like DE (for the VGA size), or
> DB (the 25 pin classic RS-232), and so forth.  Often, incorrectly, all are
> called DB.
>
> Those shells have a variety of choices for pins.  They may be two rows of
> pins (e.g., DB-25), or 3 rows (e.g., DE-15).  You may also find ones that
> have just miniature coax inserts, or a mix of coax and plain pins.  The
> coax inserts are generally larger, such that it takes up much of the height
> of the connector.  I haven't seen coax pins that are the same diameter as
> plain signal pins, that's rather hard to imagine especially for something
> as old as an Imlac.  Examples of mixed pin D-sub connectors are the Sun
> video monitor connectors, with RGB on coax.
>
> paul
>
>
>

Like one of these bad-boys, only with 14 connectors rather than 34:

http://cables24.com/en/others/cable-v-35/1470-V-35-m34-Winchester-34pin-male-connector

Sorry for not being more specific.  The coax connectors in a 13W3 connector
(for example) are much larger than what I need.

- Josh

Re: Winchester-style coax connectors?

[Paul Koning]

> On Dec 1, 2016, at 2:27 PM, Josh Dersch  wrote:
> 
> ...
> The Imlac uses a Winchester connector (14 position) for the display and
> while they're not as common these days the parts can still be found so I
> thought I was in the clear, but what I failed to notice is that three of
> the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
> connectors that fit within the Winchester housing (i.e. they're the same
> diameter as a Winchester pin).

What is a "Winchester connector"?  Do you mean a D-sub connector, i.e., with a 
trapezoidal shell such as you find on terminal or VGA connectors?  Those come 
in a number of widths, with names like DE (for the VGA size), or DB (the 25 pin 
classic RS-232), and so forth.  Often, incorrectly, all are called DB.

Those shells have a variety of choices for pins.  They may be two rows of pins 
(e.g., DB-25), or 3 rows (e.g., DE-15).  You may also find ones that have just 
miniature coax inserts, or a mix of coax and plain pins.  The coax inserts are 
generally larger, such that it takes up much of the height of the connector.  I 
haven't seen coax pins that are the same diameter as plain signal pins, that's 
rather hard to imagine especially for something as old as an Imlac.  Examples 
of mixed pin D-sub connectors are the Sun video monitor connectors, with RGB on 
coax.

paul