HDMi lead Version 1.4 vs. 2.0

On 19/01/2015 09:46, Jim Lesurf wrote:
In article , David wrote:
Just thought of something else to ask, once out the wrapper can one tell
if it is V1.3, 1.4 or 2.0? Regards David

I'd be interested in the answer to that, and related aspects of HDMI
cables. I've recently found swapping around different cables affected
behaviour of devices. Albeit with pretty cheap cables. And in at least one
case I suspect the cable is not 'fully populated' with no sign of this on
the package.

Jim



Who is in charge of the HDMI specifications etc.?
Beginning to look like a really big mess to me.
Regards
David

Jim Lesurf wrote:

David Park wrote:

once out the wrapper can one tell
if it is V1.3, 1.4 or 2.0? Regards David

I'd be interested in the answer to that, and related aspects of HDMI
cables.

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.

In article , Andy
Burns
wrote:
Jim Lesurf wrote:

David Park wrote:

once out the wrapper can one tell
if it is V1.3, 1.4 or 2.0? Regards David

I'd be interested in the answer to that, and related aspects of HDMI
cables.

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.


The only spec doc I have details a bandwidth / freqency response for the
cable. Can't recall what HDMI version it is. , but I'll check. I assume the
later specs demand a higher bandwidth.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

On 19/01/2015 14:05, Andy Burns wrote:
Jim Lesurf wrote:

David Park wrote:

once out the wrapper can one tell
if it is V1.3, 1.4 or 2.0? Regards David

I'd be interested in the answer to that, and related aspects of HDMI
cables.

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.




i certainly had an otherwise perfectly fine working hdmi lead that
refused to work with ARC - an equally cheap one that mentioned 1.4
worked though.

--
Gareth.
That fly.... Is your magic wand.

the dog from that film you saw wrote:

Andy Burns wrote:

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.

i certainly had an otherwise perfectly fine working hdmi lead that
refused to work with ARC - an equally cheap one that mentioned 1.4
worked though.

I thought the only pin differences for 1.4 concerned HEC (HDMI ethernet
channel) on pins 14&19, but it seems ARC shares those pins.

Andy Burns wrote:
the dog from that film you saw wrote:

Andy Burns wrote:

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.

i certainly had an otherwise perfectly fine working hdmi lead that
refused to work with ARC - an equally cheap one that mentioned 1.4
worked though.

I thought the only pin differences for 1.4 concerned HEC (HDMI ethernet
channel) on pins 14&19, but it seems ARC shares those pins.

Too lazy to look myself, but for 1.3 and 1.4 questions the answers may
lie here -

https://docs.google.com/folderview?i...&usp=drive_web

In message , Andy
Furniss writes
Andy Burns wrote:
the dog from that film you saw wrote:

Andy Burns wrote:

I don't think there's been any change of cable spec 1.3-1.4-2.0 merely
that if the cable is "High Speed" it should cope with the higher
resolutions/frame rates/3D etc, except I think the "HDMI with Ethernet"
variety needs a particular cable.

i certainly had an otherwise perfectly fine working hdmi lead that
refused to work with ARC - an equally cheap one that mentioned 1.4
worked though.

I thought the only pin differences for 1.4 concerned HEC (HDMI ethernet
channel) on pins 14&19, but it seems ARC shares those pins.

Too lazy to look myself, but for 1.3 and 1.4 questions the answers may
lie here -

https://docs.google.com/folderview?i...6cFNPTEU&usp=d
rive_web

Bloody 'ell! 237 pages and 425 pages! Just as well HDMI isn't
complicated.
--
Ian

In article ,
Jim Lesurf wrote:

The only spec doc I have details a bandwidth / freqency response for the
cable. Can't recall what HDMI version it is. , but I'll check. I assume the
later specs demand a higher bandwidth.

No. There isn't a difference between cables for different version
numbers. That is, there's no such thing as an HDMI 1.2 cable for
example. However there are "standard" and "high speed" cables. The
former are supposed to support up to 720p/1080i, the latter up to 4k.
All are supposed to support ARC, but in my experience not all work
reliably.

(There are also the cables that include ethernet.)

-- Richard

On 20/01/2015 11:12, Richard Tobin wrote:
In article ,
Jim Lesurf wrote:

The only spec doc I have details a bandwidth / freqency response for the
cable. Can't recall what HDMI version it is. , but I'll check. I assume the
later specs demand a higher bandwidth.

No. There isn't a difference between cables for different version
numbers. That is, there's no such thing as an HDMI 1.2 cable for
example. However there are "standard" and "high speed" cables. The
former are supposed to support up to 720p/1080i, the latter up to 4k.
All are supposed to support ARC, but in my experience not all work
reliably.

(There are also the cables that include ethernet.)

-- Richard

Well Richard that is just as confusing as I was when I posted my
confused original post.

Ok which work reliably for all situations that you found?

(I have ordered two which say they are V2.0)
Regards
David

In article , Richard Tobin
wrote:
In article , Jim Lesurf
wrote:

The only spec doc I have details a bandwidth / freqency response for
the cable. Can't recall what HDMI version it is. , but I'll check. I
assume the later specs demand a higher bandwidth.

No. There isn't a difference between cables for different version
numbers.

So what do the different version number actually relate to?

BTW The only document I currently have is an Hitachi spec for version
'1.3a'.

That is, there's no such thing as an HDMI 1.2 cable for
example. However there are "standard" and "high speed" cables. The
former are supposed to support up to 720p/1080i, the latter up to 4k.
All are supposed to support ARC, but in my experience not all work
reliably.

(There are also the cables that include ethernet.)

I recently encountered a situation where I'd bought two cheap HDMI cables
from different shops.

Using one of them to connect a DVD recorder to the TV I found that the TV
didn't 'detect' the recorder being switched on and used. So I experimented
with swapping over that cable with one I'd been using between one of my
computers and its monitor. (Also for 1920 x 1080 at 50Hz.)

The cable I'd been using for the computer allowed the recorder to get the
TV to notice when it was switched on and used. So now they worked together
according to the handbooks.

From which I assume that the cheap cable either has some connections
missing or has some other imperfection/limitation.

Experimenting with it between computer and monitor I found that it removed
a problem I'd had. In the past a specific image as 'wallpaper' acquired a
green tinge for some near-black pixels when using a paericular screen mode.
With the new, cheap, cable, this effect had gone and the image looked fine.
No tinge any more.

So the real question is how you can tell when seeing a cable what it will
behave like in a given use, and what actual abilities it supports.

Looking at the electronic spec I can see that the HDMI could easily cause
such device-varying quirks. e.g. the signal cables aren't 'matched' to the
cable at the source end. So if they mismatch the destination load, fun can
begin. As it may if the pairs, etc, are imperfect.

The challenge then being to know before you buy which cables are without
such problems *without* them being high priced gold-plated ones onto which
someone has sprinkled oofle dust.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html