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HDMI in-ports vs HDMI out-ports (possibly related to damaged monitor



 
 
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  #1  
Old December 6th 18, 04:03 PM posted to rec.audio.high-end
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Default HDMI in-ports vs HDMI out-ports (possibly related to damaged monitor

Here is my question:

Why does the Denon A/V Receiver 1909 have a difference in labelling at the back ?

At the back there are 4 HDMI ports, all of same connector type, all female or male... no difference. These all appear to be female.

3 ports are labelled as "in"... for example tv/dvd/hdp.

1 port is laballed as "out/monitor".

I connected the PC's graphics card to A/V receiver HDMI out/monitor first.

I kinda had a bad feeling about this... just slightly...

But I thought:

1. Probably won't cause damage, never happened before in 25 years of computer equipment handling.

2. Graphics/Monitor kinda belong together.

However...

This is now connecting:

GT 520 HMDI graphics OUT with A/V receiver HDMI OUT.

So where is my question:

What happens when two HDMI OUTPUT ports are connected together ?! WTF ?!

How is this even possible ?!

Also why would there ever be a male and female connectors ?! I have seen this this is weird.

Isn't HDMI supposed to be Peer 2 Peer ?!?

So another really important question:

What is the difference between HDMI IN and HDMI OUT ?!?!?!?!?

Could connecting OUT to OUT cause DAMAGE ?!?!??!

What happens to the GT 520 ?! When it's connected like this ?!

Will it dump excessive voltage on the chasis ?!

What if chasis is not grounded ?!

Will this voltage end up into the DVI cable connected to monitor causing damage ?!?!?!?!?!?

GT 520 has 3 outputs, vga, dvi, hdmi.

dvi was connected to monitor
hdmi was connected to a/v receiver hdmi out briefly... then it didn't work switched it over to hdmi in on receiver...

To me it seems this out 2 out may have caused damaged. Or switching the cable over from the 3 different hdmi's in to experiment ?

Bye,
Skybuck.
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  #2  
Old December 6th 18, 04:37 PM posted to rec.audio.high-end
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Default HDMI in-ports vs HDMI out-ports (possibly related to damaged monitor

I am starting to suspect this may have something to do with it:

A quote from somewhere on the web:

"
As it turns out, the signal pin used for HDMI with Ethernet is also used for the HDMI Audio Return Channel feature, which greatly improves operation with sound bars and AVR’s.
"

The denon 1909 is only hdmi 1.3a or something like that.

Perhaps this re-assignment of pins somehow caused damaged/voltages to float around in the PC ending up in the monitor.

Bye,
Skybuck.
  #3  
Old December 6th 18, 07:08 PM posted to rec.audio.high-end
-dsr-
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Default HDMI in-ports vs HDMI out-ports (possibly related to damaged

On 2018-12-06, > wrote:
> Here is my question:
>
> Why does the Denon A/V Receiver 1909 have a difference in labelling at the back ?
>
> At the back there are 4 HDMI ports, all of same connector type, all female or male... no difference. These all appear to be female.
>
> 3 ports are labelled as "in"... for example tv/dvd/hdp.
>
> 1 port is laballed as "out/monitor".
>
> I connected the PC's graphics card to A/V receiver HDMI out/monitor first.
>
> I kinda had a bad feeling about this... just slightly...
>
> But I thought:
>
> 1. Probably won't cause damage, never happened before in 25 years of computer equipment handling.
>
> 2. Graphics/Monitor kinda belong together.
>
> However...
>
> This is now connecting:
>
> GT 520 HMDI graphics OUT with A/V receiver HDMI OUT.
>
> So where is my question:
>
> What happens when two HDMI OUTPUT ports are connected together ?! WTF ?!


Your A/V receiver has an HDMI switch, with the capacity to direct one of three
inputs to one output.

All HDMI connections are nominally bidirectional, with one side negotiating
to become the sender, and the other side becoming the receiver.

Your GT 520 can't become the receiver. So they are sitting there talking
to each other, but not doing anything useful.


> How is this even possible ?!


The world is full of wonders.

> Also why would there ever be a male and female connectors ?! I have seen this this is weird.


For convenience, the convention is that all cables default to male-male and all
equipment defaults to female. If you have a device which inserts itself into a
cable chain, it makes sense that it will either be female-female or, if it's small
enough, female-male so that the male end can go directly into the target device.

And that means that there's a small market for short male-female cables as extenders.

> Isn't HDMI supposed to be Peer 2 Peer ?!?


It is.

> So another really important question:
>
> What is the difference between HDMI IN and HDMI OUT ?!?!?!?!?


Whether a device wants to accept information (a sink, IN) or send information
(a source, OUT) on that port defines how it is labelled.

> Could connecting OUT to OUT cause DAMAGE ?!?!??!


No !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !.

Does that satisfy your need for punctuation?

> What happens to the GT 520 ?! When it's connected like this ?!


It sits there doing nothing much.

> Will it dump excessive voltage on the chasis ?!


Gosh, I hope not. That would be irresponsible.

> What if chasis is not grounded ?!


I suppose you could get a 60Hz feedback hum, except that the audio
is also sent digitally, so you get a slight voltage bias.

> Will this voltage end up into the DVI cable connected to monitor causing damage ?!?!?!?!?!?


No. There are a lot of transformers in the way. In order to cause damage
to your monitor via the DVI cable, there would be enough electricity involved to
cause the video card to burn. Do you smell smoke? Is the video card still working?

> To me it seems this out 2 out may have caused damaged. Or switching the cable over from the 3 different hdmi's in to experiment ?


You seem to be very excited by the prospect of something which should
not happen.

-dsr-
  #4  
Old December 7th 18, 01:02 PM posted to rec.audio.high-end
Peter Wieck[_2_]
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Posts: 34
Default HDMI in-ports vs HDMI out-ports (possibly related to damaged

This creature is a troll. Don't feed the troll.

Peter Wieck
Melrose Park, PA
  #5  
Old December 9th 18, 01:42 AM posted to rec.audio.high-end
~misfit~[_3_]
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Posts: 66
Default HDMI in-ports vs HDMI out-ports (possibly related to damaged

Once upon a time on usenet Peter Wieck wrote:
> This creature is a troll. Don't feed the troll.
>
> Peter Wieck
> Melrose Park, PA


I was about to say the same. I've had it killfiled for years now, it seems
to spend hours a day (for years) on the computer groups writing nonsense. As
someone with an interest in psychology I spent far longer than I probably
should thinking about what it's life must be like as it gets almost
universal negative feedback. Maybe one in 100 replies it gets are from
someone who doesn't know it's MO and treats it like a (relatively) normal
human.
--
Shaun.

"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)


 




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