HDMI Cable

Is 28 AWG too thin for a 10' HDMI Cable?

Is there a real world (as opposed to theoretical) benefit to having
gold plated connectors?

What is a net jacket?

On Fri, 08 Dec 2006 10:09:33 -0600, Bob Simon
wrote:

Is 28 AWG too thin for a 10' HDMI Cable?

Is there a real world (as opposed to theoretical) benefit to having
gold plated connectors?

What is a net jacket?

I ordered the following cable from MonoPrice:

HDMI Cable male to male 28AWG - 10ft w/Ferrite Cores (Gold-Plated)
$7.10

I hope I won't be sorry ordering a 28 AWG cable before hearing back
from you guys. Also, since I'm getting a cable with ferrite cores,
what do they do? Is it ever a good idea to remove them?

Gold: The basic rule is don't mix metals. If your inputs and outputs are
gold then stick with gold; if they are not gold but your cable is you can
develop connection problems over time.

Ferrite cores are not needed on a digital interconnect; silly really.

28 AWG is fine if the length is kept to about 3 meters, perhaps 5 meters.

Richard.

"Richard" wrote in message
...
Gold: The basic rule is don't mix metals. If your inputs and outputs are
gold then stick with gold; if they are not gold but your cable is you can
develop connection problems over time.

Ferrite cores are not needed on a digital interconnect; silly really.

28 AWG is fine if the length is kept to about 3 meters, perhaps 5 meters.

Richard.

While I agree that mixing metals is best avaoided, Gold is very stable and I
have never seen, in three decades of installation and service work, a
problem due to mixing gold and other connectors.

Ferrite cores are intended to insert a common mode impedance in the wire.
They can be useful in some cases that can disprupt signal transmission but
are usually irrelevant. They can be equally useful in digital cables and
analog cables. A digital transmission actually looks like RF and behaves as
an analog signal does in a cable. Just because it is digital does not mean
that noise cannot disrupt the transmission.

Wire gauge seems to make little difference in HDMI cables, even with length.
Shielding is much more critical at longer lengths.

Leonard

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Richard wrote:
Gold: The basic rule is don't mix metals. If your inputs and outputs are
gold then stick with gold; if they are not gold but your cable is you can
develop connection problems over time.

MYTH !!!!

There is absolutely no basis (chemical or electrical) for this
argument, other than, perhaps, reports about memory modules that
would cause trouble if mixed --- but it was not really the fact
of connecting gold to non-gold; it was simply that there was a
standard in which gold connectors meant a particular type of
module, and the tin ones were a different type; it was mixing
the different *types of memory* what caused the problem, not
the fact of connecting something that is gold-plated to a non-
gold-plated.

Carlos
--

Bob Simon wrote:

Is there a real world (as opposed to theoretical) benefit to having
gold plated connectors?

Why would you talk about a "theoreticl benefit"? (as if it was
undebatable) --- any claimed "theoretical" benefit of gold-plated
connectors is most likely snake oil... (I'm sure they claim that
the signal is more "pure" because you're using a metal that is
intrinsicly "pure" and blaaah blah blaaahhhh...)

The *real* (both practical and theoretical) benefit of gold-plated
connectors is that it does not develop rust (or an oxide surface)
over time --- the oxide surface compromises the ability to transmit
the signal, since it compromises the conductivity of the surface.

Carlos
--

"Carlos Moreno" wrote in message
...
Richard wrote:
Gold: The basic rule is don't mix metals. If your inputs and outputs are
gold then stick with gold; if they are not gold but your cable is you can
develop connection problems over time.

MYTH !!!!

There is absolutely no basis (chemical or electrical) for this
argument, other than, perhaps, reports about memory modules that
would cause trouble if mixed --- but it was not really the fact
of connecting gold to non-gold; it was simply that there was a
standard in which gold connectors meant a particular type of
module, and the tin ones were a different type; it was mixing
the different *types of memory* what caused the problem, not
the fact of connecting something that is gold-plated to a non-
gold-plated.

My understanding was that the gold plating behaves in a more cathodic manner
than tin or nickel platings and causes them to corrode. In high frequency
or low signal level conditions this can be a problem. Even in the high
humidity of Louisiana and Florida, however, in practice I have not seen it
to be an issue in A/V systems.

Leonard

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I know that computer memory chips manufacturers are very fussy that the pin
metal is the same as the chip socket metal.
electrolysis perchance?

--
All the Best,
Richard Harison
"Leonard Caillouet" wrote in message
...

"Carlos Moreno" wrote in message
...
Richard wrote:
Gold: The basic rule is don't mix metals. If your inputs and outputs are
gold then stick with gold; if they are not gold but your cable is you can
develop connection problems over time.

MYTH !!!!

There is absolutely no basis (chemical or electrical) for this
argument, other than, perhaps, reports about memory modules that
would cause trouble if mixed --- but it was not really the fact
of connecting gold to non-gold; it was simply that there was a
standard in which gold connectors meant a particular type of
module, and the tin ones were a different type; it was mixing
the different *types of memory* what caused the problem, not
the fact of connecting something that is gold-plated to a non-
gold-plated.

My understanding was that the gold plating behaves in a more cathodic manner
than tin or nickel platings and causes them to corrode. In high frequency or
low signal level conditions this can be a problem. Even in the high humidity
of Louisiana and Florida, however, in practice I have not seen it to be an
issue in A/V systems.

Leonard

--------------------------------------------------------------------------------
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On Fri, 08 Dec 2006 14:14:21 -0500, Carlos Moreno
wrote:

Bob Simon wrote:

Is there a real world (as opposed to theoretical) benefit to having
gold plated connectors?

Why would you talk about a "theoreticl benefit"? (as if it was
undebatable) --- any claimed "theoretical" benefit of gold-plated
connectors is most likely snake oil... (I'm sure they claim that
the signal is more "pure" because you're using a metal that is
intrinsicly "pure" and blaaah blah blaaahhhh...)

A theoretical benefit is one that is too insignificant to be of
practical value but is nevertheless interesting because it explains
how things work.

The *real* (both practical and theoretical) benefit of gold-plated
connectors is that it does not develop rust (or an oxide surface)
over time --- the oxide surface compromises the ability to transmit
the signal, since it compromises the conductivity of the surface.

Carlos

"Bob Simon" wrote in message
...
On Fri, 08 Dec 2006 10:09:33 -0600, Bob Simon
wrote:

Is 28 AWG too thin for a 10' HDMI Cable?

Is there a real world (as opposed to theoretical) benefit to having
gold plated connectors?

What is a net jacket?

I ordered the following cable from MonoPrice:

HDMI Cable male to male 28AWG - 10ft w/Ferrite Cores (Gold-Plated)
$7.10

I hope I won't be sorry ordering a 28 AWG cable before hearing back
from you guys. Also, since I'm getting a cable with ferrite cores,
what do they do? Is it ever a good idea to remove them?



Bob, have you priced these types of cables at stores like Best Buy?

Here's one:
http://www.bestbuy.com/site/olspage....5&type=product

Monoprice [AKA eHDMI] has very nice quality cables at hard-to-believe
prices.

Go for it!