Simply random stuff

[Owen Smith]

From what I understand, if the run is long then it needs /may need an injector?

The power available from the equipment the HDMI lead is plugged in to at each end is quite limited. I've never had to investigate how limited.

 

[mandrix]

The power available from the equipment the HDMI lead is plugged in to at each end is quite limited. I've never had to investigate how limited.

You have been tasked to investigate! C'mon Owen! Don't let us down.

 

[mandrix]

I guess I'm curious why a "HDMI" optical cable...which i confess I have not read the specs on...would need a boost in power. Aren't standard HDMI cables good to 40 feet or so? (2x gauge copper)
Asking, because I don't know.
I don't know much about anything but if my fiber internet signal could theoretically travel around the world in milli seconds, is this because of, what?

 

[Owen Smith]

I guess I'm curious why a "HDMI" optical cable...which i confess I have not read the specs on...would need a boost in power. Aren't standard HDMI cables good to 40 feet or so? (2x gauge copper)
Asking, because I don't know.
I don't know much about anything but if my fiber internet signal could theoretically travel around the world in milli seconds, is this because of, what?

I suspect the issue is converting the optical signal back to electrical signals at the receiving end. The cable then has to drive the HDMI input of the receiving device and it can't get the power for that down the optical line. It can get a little from the HDMI it is driving, but not a lot. How much may depend on the device being driven.

 

[Owen Smith]

I don't know much about anything but if my fiber internet signal could theoretically travel around the world in milli seconds

Actually the fastest any signal can travel all the way around the earth is 134 milliseconds: https://web2.0calc.com/questions/how-long-does-it-take-for-light-to-travel-around-the-world

 

[Mackspower]

The power available from the equipment the HDMI lead is plugged in to at each end is quite limited. I've never had to investigate how limited.

In my case, an ESPON projector happily supplies the current but you can use a phone charger / wall wart.
Just go for a good quality unit with at least 0.5 Amp rating.
Link to my power injector (it came with the cable): RUIPRO HDMI Power Injector

 

[mandrix]

Actually the fastest any signal can travel all the way around the earth is 134 milliseconds: https://web2.0calc.com/questions/how-long-does-it-take-for-light-to-travel-around-the-world

Well,

 

[barfle]

Take up model railroading, barfle. It can be just as frustrating, perhaps even more.

Well, the cable came in yesterday. Delivered to my neighbor (I recognized the porch picture), but we swapped mis-delivered packages. I strung it in the room from the pre-pro to the TV and watched a 3D movie (Bwana devil x not exactly great cinema and pretty laughable back-screen scenes) and it’s working fine. Crawl space work today, and I realized that I need to run the room calibration procedure after starting over on programming my new Marantz 7706.

 

[barfle]

Well I have no attic space so it's either cable raceways or start taking down sheetrock.

When I bought this house, I was looking for a room I could build my theater in. I’m generally satisfied with what I ended up with, although there were significant work-arounds like all the truss work where I wanted to put the door. I figured out something that worked pretty good, and as I’ve noted, that’s my standard - pretty good. I made a lot of holes in the existing sheetrock, including taking out a closet.

i pushed several conduits around the room (it’s all in the build blog), so at least when I have to fix something, it’s not a full do-over. Still a pain, but I did the hardest work early on (when I was younger).

 

[barfle]

Apologies if this has already been covered or suggested . . . is your cable able to support a HDMI Power injector?
These are basically a pass-through female-to-male hdmi adaptor with a USB cable that pops out the side so you plug it into a 5V DC source.
I have a 15M hdmi optical cable and it will not work without the power booster at the remote end.

I don’t believe so. It was working for about two weeks, then it just stopped. I assume it was getting needed power from each end component, because it seemed fine and the description didn’t call for any power injection. It was directional, and I paid attention to which end went where. None of tje descriptions or reviews made any mention of a power source being required.

At any rate, I have a new chunk of copper, tested and waiting to be pulled through the crawl spaces.

 

[barfle]

I guess I'm curious why a "HDMI" optical cable...which i confess I have not read the specs on...would need a boost in power. Aren't standard HDMI cables good to 40 feet or so? (2x gauge copper)
Asking, because I don't know.
I don't know much about anything but if my fiber internet signal could theoretically travel around the world in milli seconds, is this because of, what?

Converting from electrical to optical takes energy. Converting back takes energy.

The HDMI specs I’ve read are the old problem of trying to put ten pounds of s**t in a five-pound bag. Maybe that’s why it’s called “HIGH DENSITY multimedia interface.” They’re barely comprehensible to this retired engineer who’s been out of the business for a decade.

They do allow for some power to be provided, as well as ridiculously high data rates for 4k and 3D, along with control functions, eARC, and somehow, Ethernet. To me, it’s a big ask, but I believe it’s usually met. My previous (copper) HDMI cable lasted five years, but it’s not the first canle failure I’ve experienced. If I had known they were so fragile, I might have made them easier to replace. Live and learn.

 

[Owen Smith]

eARC, and somehow, Ethernet.

You can have either eARC or Ethernet but not both at the same time. eARC uses the same pair in the cable that was originally allocated to Ethernet. In practice I'm not aware of any equipment that actually runs Ethernet over HDMI.

 

[GOS]

bump

 

[GOS]

Looking out my balcony in Palm Springs CALIFORNIA.

 

[ar surround]

Looking out my balcony in Palm Springs CALIFORNIA.

Rub it in Gene. It's 22 F here and very windy.

 

[Sonik Wiz]

Looking out my balcony in Palm Springs CALIFORNIA.

Very pretty. And look Ma! No forest fires!

 

[inspclouseau]

 

[cbmmm3]

View attachment 112494

Ive said it several times before but it needs repeating - you take incredible pictures. I love seeing them . thank you

 

[Sonik Wiz]

View attachment 112494

That's worthy of Ansel Adams!

 

[ar surround]

View attachment 112494

Ive said it several times before but it needs repeating - you take incredible pictures. I love seeing them . thank you

That's worthy of Ansel Adams!

What Ricky and Scott said.