Re: [PSES] Source for Quality Video Cables

2016-03-03 Thread Elliott Martinson 
Do people really fall for all that unnecessary nonsense, for what is a 100% 
DIGITAL signal? Their words crack me up: "...minimizes distortion caused by the 
grain boundaries that exist within any metal conductor, nearly eliminating 
harshness and greatly increasing clarity..." " ...it causes much less of the 
out-of-focus effect" “...colorless” sonic presentation..." "...unexpected 
detail and dynamic contrast."

And yet another messed up part, demonstrating ignorance of SI: "All signal 
conductors controlled for digital-audio direction in AudioQuest HDMI cables, 
and care is even taken to run the conductors used in the Audio Return Channel 
in the opposite direction to ensure the best performance for that application. 
Arrows are clearly marked on the connectors to ensure superior sound quality."
Do they not realize that on a transmission line, the wave propagates in the 
same direction on both the signal AND return conductor? Do they really think 
the receiving end somehow "knows" what to transmit on the return line before 
the signal even gets there? Plus (from a quick Wikipedia browsing) the audio 
signal has a sample rate of 32kHz up to a max of 192 kHz. So transmission line 
effects don't even really matter (they do on the video, however, where rates 
are 25-340MHz/680MHz depending on if single or dual-link).

Elliott


-Original Message-
From: Ted Eckert [mailto:ted.eck...@microsoft.com]
Sent: Wednesday, March 02, 2016 10:34 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

The cable vendors are now hyping the presence of oxygen. Now you can read about 
the "benefits" of air-foamed polyethylene. It's interesting to see what else 
cable vendors find for their ad copy.
 http://www.audioquest.com/hdmi/diamond
Amazon currently sells this HDMI cable for the low price of $1500.

Ted Eckert
The opinions expressed are my own and do not necessarily reflect those of my 
employer.

-Original Message-
From: Cortland Richmond [mailto:k...@earthlink.net]
Sent: Wednesday, March 2, 2016 7:12 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

On 3/2/2016 8:02 PM, Brent DeWitt wrote:
> I haven't looked at the SI characteristics, but the standard clearly 
> doesn't address EMC concerns and the performance of the cables in 
> radiated emission shows it.  YMMV
Hi Brent,

I hope none of the vendors start hyping oxygen free cable. (grin)

Cortland

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Re: [PSES] Source for Quality Video Cables

2016-03-03 Thread Dan Roman 
I'd love to see their physics explanation behind their claim of 
"directionality".  Does that mean I would get inferior performance using the 
ARC feature of HDMI?  Monster Cable taken to the extreme, what did PT Barnum 
say?

__
Dan Roman, N.C.E.
Senior Member
IEEE Product Safety Engineering Society
mailto:dan.ro...@ieee.org


 
 

-Original Message-
From: Ted Eckert [mailto:ted.eck...@microsoft.com] 
Sent: Wednesday, March 02, 2016 11:34 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

The cable vendors are now hyping the presence of oxygen. Now you can read about 
the "benefits" of air-foamed polyethylene. It's interesting to see what else 
cable vendors find for their ad copy.
 http://www.audioquest.com/hdmi/diamond
Amazon currently sells this HDMI cable for the low price of $1500.

Ted Eckert
The opinions expressed are my own and do not necessarily reflect those of my 
employer.

-Original Message-
From: Cortland Richmond [mailto:k...@earthlink.net]
Sent: Wednesday, March 2, 2016 7:12 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

On 3/2/2016 8:02 PM, Brent DeWitt wrote:
> I haven't looked at the SI characteristics, but the standard clearly 
> doesn't address EMC concerns and the performance of the cables in 
> radiated emission shows it.  YMMV
Hi Brent,

I hope none of the vendors start hyping oxygen free cable. (grin)

Cortland

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Ted Eckert 
The cable vendors are now hyping the presence of oxygen. Now you can read about 
the "benefits" of air-foamed polyethylene. It's interesting to see what else 
cable vendors find for their ad copy.
 http://www.audioquest.com/hdmi/diamond
Amazon currently sells this HDMI cable for the low price of $1500.

Ted Eckert
The opinions expressed are my own and do not necessarily reflect those of my 
employer.

-Original Message-
From: Cortland Richmond [mailto:k...@earthlink.net] 
Sent: Wednesday, March 2, 2016 7:12 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

On 3/2/2016 8:02 PM, Brent DeWitt wrote:
> I haven't looked at the SI characteristics, but the standard clearly 
> doesn't address EMC concerns and the performance of the cables in 
> radiated emission shows it.  YMMV
Hi Brent,

I hope none of the vendors start hyping oxygen free cable. (grin)

Cortland

-

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Cortland Richmond 

On 3/2/2016 8:02 PM, Brent DeWitt wrote:

I haven't looked at the SI characteristics, but the standard clearly doesn't 
address EMC concerns and the performance of the cables in radiated emission 
shows it.  YMMV

Hi Brent,

I hope none of the vendors start hyping oxygen free cable. (grin)

Cortland

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Brent DeWitt 
There has been a recent marketing blitz for "certified" HDMI cables.  THX has 
started a certification program and Kordz is one company that proudly 
advertises _very_ expensive cables for high video resolutions.  I haven't 
looked at the SI characteristics, but the standard clearly doesn't address EMC 
concerns and the performance of the cables in radiated emission shows it.  YMMV

Brent DeWitt
Milford, MA

-Original Message-
From: Kunde, Brian [mailto:brian_ku...@lecotc.com] 
Sent: Wednesday, March 02, 2016 4:56 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

A quick trip in the "Way Back" machine brings me back to the early PC days. To 
get parallel printers to pass the FCC class B requirements we had to use a very 
expensive cable purchased directly from IBM which had double shielded cable and 
heavy metal back shells. The cost was something like $50 which was a lot of 
money for a cable.

However, you could go to the local electronic store at the time and buy a 
printer cable made up of ribbon cable with crimp on D-sub on one end and a 
Centronics connector on the other for like $5. I think the only people who 
bought the $50 cable was EMC labs.

The Other Brian

-Original Message-
From: Cortland Richmond [mailto:k...@earthlink.net]
Sent: Wednesday, March 02, 2016 4:11 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

On 3/2/2016 11:54 AM, IBM Ken wrote:
> perhaps you could enclose the whole cable in a tubular copper braid 
> (or mylar-foil tape) and try to solder to the shield of the DVI 
> connectors

Around 1987, my late brother, who was a free-lance C-language consultant, 
bought an extremely high resolution 27 inch, black-and-white (okay, orange and 
white) monitor. That way he could see several pages of code at the same time.

Unfortunately, it interfered with the television reception of another resident 
on the 18th floor. I was working in EMC at the time, and took my ICOM R 7000 
receiver over with an inductive probe.  The noise was coming from the video 
cable.

I did precisely what Ken suggests; I took a few feet of the shield from a piece 
of RG-8 cable slit down the side, slid it over the cable, made sure the braid 
overlapped across the slit and wrapped it tightly in electrical tape. Then I 
used tie-wraps to ensure the shield made good contact to the EMC back shells on 
the connectors. Problem solved!

 From the "For What It's Worth Department": I think modern monitors are 
quieter.  It was a *BIG* CRT   and Class A to boot.

Cortland Richmond

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Kunde, Brian 
A quick trip in the "Way Back" machine brings me back to the early PC days. To 
get parallel printers to pass the FCC class B requirements we had to use a very 
expensive cable purchased directly from IBM which had double shielded cable and 
heavy metal back shells. The cost was something like $50 which was a lot of 
money for a cable.

However, you could go to the local electronic store at the time and buy a 
printer cable made up of ribbon cable with crimp on D-sub on one end and a 
Centronics connector on the other for like $5. I think the only people who 
bought the $50 cable was EMC labs.

The Other Brian

-Original Message-
From: Cortland Richmond [mailto:k...@earthlink.net]
Sent: Wednesday, March 02, 2016 4:11 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

On 3/2/2016 11:54 AM, IBM Ken wrote:
> perhaps you could enclose the whole cable in a tubular copper braid
> (or mylar-foil tape) and try to solder to the shield of the DVI
> connectors

Around 1987, my late brother, who was a free-lance C-language consultant, 
bought an extremely high resolution 27 inch, black-and-white (okay, orange and 
white) monitor. That way he could see several pages of code at the same time.

Unfortunately, it interfered with the television reception of another resident 
on the 18th floor. I was working in EMC at the time, and took my ICOM R–7000 
receiver over with an inductive probe.  The noise was coming from the video 
cable.

I did precisely what Ken suggests; I took a few feet of the shield from a piece 
of RG-8 cable slit down the side, slid it over the cable, made sure the braid 
overlapped across the slit and wrapped it tightly in electrical tape. Then I 
used tie-wraps to ensure the shield made good contact to the EMC back shells on 
the connectors. Problem solved!

 From the "For What It's Worth Department": I think modern monitors are 
quieter.  It was a *BIG* CRT – and Class A to boot.

Cortland Richmond

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mistake, please destroy it and notify us of the error. Thank you.

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Cortland Richmond 

On 3/2/2016 11:54 AM, IBM Ken wrote:
perhaps you could enclose the whole cable in a tubular copper braid 
(or mylar-foil tape) and try to solder to the shield of the DVI connectors


Around 1987, my late brother, who was a free-lance C-language 
consultant, bought an extremely high resolution 27 inch, black-and-white 
(okay, orange and white) monitor. That way he could see several pages of 
code at the same time.


Unfortunately, it interfered with the television reception of another 
resident on the 18th floor. I was working in EMC at the time, and took 
my ICOM R–7000 receiver over with an inductive probe.  The noise was 
coming from the video cable.


I did precisely what Ken suggests; I took a few feet of the shield from 
a piece of RG-8 cable slit down the side, slid it over the cable, made 
sure the braid overlapped across the slit and wrapped it tightly in 
electrical tape. Then I used tie-wraps to ensure the shield made good 
contact to the EMC back shells on the connectors. Problem solved!


From the "For What It's Worth Department": I think modern monitors are 
quieter.  It was a *BIG* CRT – and Class A to boot.


Cortland Richmond

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Paasche, Dieter 
Brian, 

Also noted many differences in cables

In our case, we first made sure all signal pins on the board were filtered. 
We grounded all unused pins on the board side.  

If that did not help we removed unused pins from the cable. 


Sincerely, 

Dieter Paasche
Advanced Product Developer, Electrical
CHRISTIE
809 Wellington Street North
Kitchener, ON N2G 4Y7
Phone: 519-744-8005 ext.7211
www.christiedigital.com

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-Original Message-
From: Kunde, Brian [mailto:brian_ku...@lecotc.com] 
Sent: Wednesday, March 02, 2016 10:43 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Source for Quality Video Cables

We are in need of a reasonably priced source for quality and reliable video 
cables; specifically a Single Link DVI Male to Male in a variety of lengths. In 
one application we would prefer one end of the cable to be a right angle.

We have received and tested numerous over the counter DVI cables; some test 
great, some are absolutely horrible (Radiated Emissions Test).  So we started 
purchasing the ones that tested good only to find out later that they do not 
hold up. Flexing the cable and connector a few times will break loose the 
Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining how the 
Back-shell to cable shield connection is made. What an eye opener. Some cables 
just use the over-mold to hold it all together. Most cables, if you flex the 
cable 2 or 3 times you can completely  pull the cable shield away from the 
back-shell if it even has a backshell. One cable we cut open, they just wrap 
the ends with coper tape (no solder) and then overmold it.

We are also finding that even cables made by the same company are made 
differently. How this termination is done on a 6 ft cable is different than a 
10 ft cable from the same company. No consistency. This is becoming a nightmare.

I was hoping someone could help me out and point me in the right direction.  
Our company is not big enough to influence a cable manufacture directly (we 
purchase through distribution), have such a cable custom made, and it would be 
very expensive to bring in the tools to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


LECO Corporation Notice: This communication may contain confidential 
information intended for the named recipient(s) only. If you received this by 
mistake, please destroy it and notify us of the error. Thank you.

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Kunde, Brian 
Ken,

Many years back we made a huge error by using USB interface to operate some 
light industrial equipment. We had all kinds of EMC issues because of the poor 
shield in the cable and face it; USB just isn’t designed for that environment. 
We ran tubular copper/tin braid over the entire USB cable and soldered it at 
each end directly to the metal back-shell. We call it our “Super Cable”. It 
worked until we redesigned to using Ethernet. Lesson Learned. We are hoping not 
to have to do something similar to the DVI cables.

Thanks for your input.
The Other Brian

From: IBM Ken [mailto:ibm...@gmail.com]
Sent: Wednesday, March 02, 2016 11:55 AM
To: Kunde, Brian
Cc: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Source for Quality Video Cables

Hi Brian; Maybe this is a dumb idea, but perhaps you could enclose the whole 
cable in a tubular copper braid (or mylar-foil tape) and try to solder to the 
shield of the DVI connectors?  Or, if you are cutting away the overmold anyway, 
solder the braid to the backshell.  It would be a little delicate to work with, 
and the braid would have to be very wide to fit over the connectors, but it 
should keep radiated noise to a minimum I would think.

-Ken A

On Wed, Mar 2, 2016 at 10:42 AM, Kunde, Brian 
<brian_ku...@lecotc.com<mailto:brian_ku...@lecotc.com>> wrote:
We are in need of a reasonably priced source for quality and reliable video 
cables; specifically a Single Link DVI Male to Male in a variety of lengths. In 
one application we would prefer one end of the cable to be a right angle.

We have received and tested numerous over the counter DVI cables; some test 
great, some are absolutely horrible (Radiated Emissions Test).  So we started 
purchasing the ones that tested good only to find out later that they do not 
hold up. Flexing the cable and connector a few times will break loose the 
Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining how the 
Back-shell to cable shield connection is made. What an eye opener. Some cables 
just use the over-mold to hold it all together. Most cables, if you flex the 
cable 2 or 3 times you can completely  pull the cable shield away from the 
back-shell if it even has a backshell. One cable we cut open, they just wrap 
the ends with coper tape (no solder) and then overmold it.

We are also finding that even cables made by the same company are made 
differently. How this termination is done on a 6 ft cable is different than a 
10 ft cable from the same company. No consistency. This is becoming a nightmare.

I was hoping someone could help me out and point me in the right direction.  
Our company is not big enough to influence a cable manufacture directly (we 
purchase through distribution), have such a cable custom made, and it would be 
very expensive to bring in the tools to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


LECO Corporation Notice: This communication may contain confidential 
information intended for the named recipient(s) only. If you received this by 
mistake, please destroy it and notify us of the error. Thank you.

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Attachments are not permitted but the IEEE PSES Online Communities site at 
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information intended for the named recipient(s) only. If you received this by 
mistake, please destroy it and notify us of the error. Thank you.

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This message is from the IEEE Product Safety Engineering Society emc-pstc 
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Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-complia

Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Larry K. Stillings 
Brian,

One thing I started doing here at the lab was purchasing cables with
"clear" jackets on them and calling out a braided shield, mainly for
USB, Firewire and such, but I wonder if that would be an option for the
DVI cables you are looking for. In my experience, the clear jacketed
cables come with a braided shield and a 360 degree termination at the
connector because it is very difficult to hide a mis-constructed cable
in a clear jacket. I've found these cables to be much more durable for
lab use and mainly have them for an example to customers when they bring
in a foiled shielded non terminated cable or drain wire to the shell
cable to show them the difference that all cables are not created equal
when it comes to radiated emissions.

Larry K. Stillings
Compliance Worldwide, Inc. 
Test Locally, Sell Globally and Launch Your Products Around the World! 
FCC - Wireless - Telecom - CE Marking - International Approvals -
Product Safety 
357 Main Street
Sandown, NH 03873
(603) 887 3903 Fax 887-6445
www.complianceworldwide.com

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-Original Message-
From: Kunde, Brian [mailto:brian_ku...@lecotc.com] 
Sent: Wednesday, March 02, 2016 10:43 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Source for Quality Video Cables

We are in need of a reasonably priced source for quality and reliable
video cables; specifically a Single Link DVI Male to Male in a variety
of lengths. In one application we would prefer one end of the cable to
be a right angle.

We have received and tested numerous over the counter DVI cables; some
test great, some are absolutely horrible (Radiated Emissions Test).  So
we started purchasing the ones that tested good only to find out later
that they do not hold up. Flexing the cable and connector a few times
will break loose the Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining
how the Back-shell to cable shield connection is made. What an eye
opener. Some cables just use the over-mold to hold it all together. Most
cables, if you flex the cable 2 or 3 times you can completely  pull the
cable shield away from the back-shell if it even has a backshell. One
cable we cut open, they just wrap the ends with coper tape (no solder)
and then overmold it.

We are also finding that even cables made by the same company are made
differently. How this termination is done on a 6 ft cable is different
than a 10 ft cable from the same company. No consistency. This is
becoming a nightmare.

I was hoping someone could help me out and point me in the right
direction.  Our company is not big enough to influence a cable
manufacture directly (we purchase through distribution), have such a
cable custom made, and it would be very expensive to bring in the tools
to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


LECO Corporation Notice: This communication may contain confidential
information intended for the named recipient(s) only. If you received
this by mistake, please destroy it and notify us of the error. Thank
you.

-

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A

Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Pawson, James 
Brian,

I feel your pain and share Rodney's opinions on HDMI cables which are my man 
bugbear. Depending on how many you purchase a year or at a time you may well 
find some cable companies willing to work with you.

James

-Original Message-
From: Kunde, Brian [mailto:brian_ku...@lecotc.com] 
Sent: 02 March 2016 15:43
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Source for Quality Video Cables

We are in need of a reasonably priced source for quality and reliable video 
cables; specifically a Single Link DVI Male to Male in a variety of lengths. In 
one application we would prefer one end of the cable to be a right angle.

We have received and tested numerous over the counter DVI cables; some test 
great, some are absolutely horrible (Radiated Emissions Test).  So we started 
purchasing the ones that tested good only to find out later that they do not 
hold up. Flexing the cable and connector a few times will break loose the 
Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining how the 
Back-shell to cable shield connection is made. What an eye opener. Some cables 
just use the over-mold to hold it all together. Most cables, if you flex the 
cable 2 or 3 times you can completely  pull the cable shield away from the 
back-shell if it even has a backshell. One cable we cut open, they just wrap 
the ends with coper tape (no solder) and then overmold it.

We are also finding that even cables made by the same company are made 
differently. How this termination is done on a 6 ft cable is different than a 
10 ft cable from the same company. No consistency. This is becoming a nightmare.

I was hoping someone could help me out and point me in the right direction.  
Our company is not big enough to influence a cable manufacture directly (we 
purchase through distribution), have such a cable custom made, and it would be 
very expensive to bring in the tools to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


LECO Corporation Notice: This communication may contain confidential 
information intended for the named recipient(s) only. If you received this by 
mistake, please destroy it and notify us of the error. Thank you.

-

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread IBM Ken 
Hi Brian; Maybe this is a dumb idea, but perhaps you could enclose the
whole cable in a tubular copper braid (or mylar-foil tape) and try to
solder to the shield of the DVI connectors?  Or, if you are cutting away
the overmold anyway, solder the braid to the backshell.  It would be a
little delicate to work with, and the braid would have to be very wide to
fit over the connectors, but it should keep radiated noise to a minimum I
would think.

-Ken A

On Wed, Mar 2, 2016 at 10:42 AM, Kunde, Brian 
wrote:

> We are in need of a reasonably priced source for quality and reliable
> video cables; specifically a Single Link DVI Male to Male in a variety of
> lengths. In one application we would prefer one end of the cable to be a
> right angle.
>
> We have received and tested numerous over the counter DVI cables; some
> test great, some are absolutely horrible (Radiated Emissions Test).  So we
> started purchasing the ones that tested good only to find out later that
> they do not hold up. Flexing the cable and connector a few times will break
> loose the Backshell to Cable shield connection.
>
> So now, before we test, we are cutting open the over-mold and examining
> how the Back-shell to cable shield connection is made. What an eye opener.
> Some cables just use the over-mold to hold it all together. Most cables, if
> you flex the cable 2 or 3 times you can completely  pull the cable shield
> away from the back-shell if it even has a backshell. One cable we cut open,
> they just wrap the ends with coper tape (no solder) and then overmold it.
>
> We are also finding that even cables made by the same company are made
> differently. How this termination is done on a 6 ft cable is different than
> a 10 ft cable from the same company. No consistency. This is becoming a
> nightmare.
>
> I was hoping someone could help me out and point me in the right
> direction.  Our company is not big enough to influence a cable manufacture
> directly (we purchase through distribution), have such a cable custom made,
> and it would be very expensive to bring in the tools to build it ourselves.
>
> Thanks for any suggestions or advice.
>
> The Other Brian
> 
>
> LECO Corporation Notice: This communication may contain confidential
> information intended for the named recipient(s) only. If you received this
> by mistake, please destroy it and notify us of the error. Thank you.
>
> -
> 
> This message is from the IEEE Product Safety Engineering Society emc-pstc
> discussion list. To post a message to the list, send your e-mail to <
> emc-p...@ieee.org>
>
> All emc-pstc postings are archived and searchable on the web at:
> http://www.ieee-pses.org/emc-pstc.html
>
> Attachments are not permitted but the IEEE PSES Online Communities site at
> http://product-compliance.oc.ieee.org/ can be used for graphics (in
> well-used formats), large files, etc.
>
> Website:  http://www.ieee-pses.org/
> Instructions:  http://www.ieee-pses.org/list.html (including how to
> unsubscribe)
> List rules: http://www.ieee-pses.org/listrules.html
>
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> Scott Douglas 
> Mike Cantwell 
>
> For policy questions, send mail to:
> Jim Bacher:  
> David Heald: 
>

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Re: [PSES] Source for Quality Video Cables

2016-03-02 Thread Rodney Davis 
And HDMI is not any better.  The narrow minded committees which come up with 
interface standards MUST also look at the physical level and require some sort 
of mechanical/electrical specification for cables to support the interfaces 
they define. Without a good cable the interface whether it be DVI , or HDMI 
just won't work as well as intended.
Before a cable manufacture can declare their cable HDMI compliant they only 
need to ensure the correct wire is connected to the right pin !!!

Sorry to say there is no answer to your question. And don't look at price, some 
of the most expensive are in fact just as badly constructed.

There is one answer , which you already touched on and that is to work with a 
supplier and define the specifications for the terminations. You don't need to 
be a big company, just need to have constant demand to justify it.

Rodney
___
From: Kunde, Brian <brian_ku...@lecotc.com>
Sent: Wednesday, March 2, 2016 10:42 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Source for Quality Video Cables

We are in need of a reasonably priced source for quality and reliable video 
cables; specifically a Single Link DVI Male to Male in a variety of lengths. In 
one application we would prefer one end of the cable to be a right angle.

We have received and tested numerous over the counter DVI cables; some test 
great, some are absolutely horrible (Radiated Emissions Test).  So we started 
purchasing the ones that tested good only to find out later that they do not 
hold up. Flexing the cable and connector a few times will break loose the 
Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining how the 
Back-shell to cable shield connection is made. What an eye opener. Some cables 
just use the over-mold to hold it all together. Most cables, if you flex the 
cable 2 or 3 times you can completely  pull the cable shield away from the 
back-shell if it even has a backshell. One cable we cut open, they just wrap 
the ends with coper tape (no solder) and then overmold it.

We are also finding that even cables made by the same company are made 
differently. How this termination is done on a 6 ft cable is different than a 
10 ft cable from the same company. No consistency. This is becoming a nightmare.

I was hoping someone could help me out and point me in the right direction.  
Our company is not big enough to influence a cable manufacture directly (we 
purchase through distribution), have such a cable custom made, and it would be 
very expensive to bring in the tools to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


LECO Corporation Notice: This communication may contain confidential 
information intended for the named recipient(s) only. If you received this by 
mistake, please destroy it and notify us of the error. Thank you.

-

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[PSES] Source for Quality Video Cables

2016-03-02 Thread Kunde, Brian 
We are in need of a reasonably priced source for quality and reliable video 
cables; specifically a Single Link DVI Male to Male in a variety of lengths. In 
one application we would prefer one end of the cable to be a right angle.

We have received and tested numerous over the counter DVI cables; some test 
great, some are absolutely horrible (Radiated Emissions Test).  So we started 
purchasing the ones that tested good only to find out later that they do not 
hold up. Flexing the cable and connector a few times will break loose the 
Backshell to Cable shield connection.

So now, before we test, we are cutting open the over-mold and examining how the 
Back-shell to cable shield connection is made. What an eye opener. Some cables 
just use the over-mold to hold it all together. Most cables, if you flex the 
cable 2 or 3 times you can completely  pull the cable shield away from the 
back-shell if it even has a backshell. One cable we cut open, they just wrap 
the ends with coper tape (no solder) and then overmold it.

We are also finding that even cables made by the same company are made 
differently. How this termination is done on a 6 ft cable is different than a 
10 ft cable from the same company. No consistency. This is becoming a nightmare.

I was hoping someone could help me out and point me in the right direction.  
Our company is not big enough to influence a cable manufacture directly (we 
purchase through distribution), have such a cable custom made, and it would be 
very expensive to bring in the tools to build it ourselves.

Thanks for any suggestions or advice.

The Other Brian


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Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

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List rules: http://www.ieee-pses.org/listrules.html

For help, send mail to the list administrators:
Scott Douglas 
Mike Cantwell 

For policy questions, send mail to:
Jim Bacher:  
David Heald: