Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




61 posts

Master Geek


# 205919 2-Dec-2016 16:08
Send private message

I've spent the last two days running cables through the ceiling and walls, installing the TV, amp and speakers so all the cables are hidden and the TV is wall mounted away from the amplifier.

 

I finally connected everything, turned it all on and find the the HDMI connection from the TV to the AMP only transmits CEC info ie I can change the volume setting on the amp with the TV remote but no sound or video goes to the amp from the TV.

 

The HDMI cable in the wall is a 10 metre "DYNAMIX 10M HDMI 2.0 High Speed Cable with Ethernet. ULTRA HD 4K. 2160p 4K2K 60fps" cable connected via PDL faceplate connectors, then some old 1m (v1.3 or 1.4?) HDMI Cables from the wall to the TV and wall to the amplifier.

 

I tested the 10m cable between the amp and TV for a few days before installing and everything worked perfectly.

 

Is it possible mixing different HDMI versions in a cable run could be causing this problem? Or could the extra 2m of the wall to tv/amp cables push the HDMI distance limitations to far?

 

 

 

 


Create new topic
5573 posts

Uber Geek


  # 1681383 2-Dec-2016 16:44
Send private message

The extra couple of metres could be enough - 10m on a passive cable is probably about as far as you'd want to go.

 

Got any better quality 1M cables to try at each end?




61 posts

Master Geek


  # 1681392 2-Dec-2016 16:53
Send private message

I don't have any other cables but I will get two more 1m v2.0 HDMI cables of the same spec as the one in the wall.

 

If distance is more likely to be the issue I could get a 0.5m cable for the amp end and shave off half a metre of the overall distance, and if that doesn't work I could remove the PDL HDMI modules and bring the cable directly out of the wall to the TV and amp. 


 
 
 
 


882 posts

Ultimate Geek

Trusted

  # 1681394 2-Dec-2016 16:55
Send private message

I finally connected everything, turned it all on and find the the HDMI connection from the TV to the AMP only transmits CEC info ie I can change the volume setting on the amp with the TV remote but no sound or video goes to the amp from the TV.

The Tv doesn't have an HDMI out, can you elaborate ?



61 posts

Master Geek


  # 1681398 2-Dec-2016 17:08
Send private message

Sorry, I forgot to mention the TV audio is using the HDMI ARC function to send the sound from the TV back into the amp. In the other direction a Bluray player attached to the amp should be able to be viewed and heard on the TV through the HDMI cable but this is not working either.


242 posts

Master Geek


  # 1681412 2-Dec-2016 17:37
Send private message



Note here that looking up the Dynamix site I find that 18Gbps (C_HDMI20-20) cables are active types, single direction.

Firstly did you connect the correct end to the display?
The cable type is directional.

I'm not sure you can connect an active type to a wall plate then to the amp and or display.
You should use a pass through cover plate(s) and directly connect the HDMI to the AMP and display.

Another problem, even with actives, Length of cable; it has been suggested to me by a device developer that that the way the newer HDMI 2.0(x) chipsets work means shorter than 2m cables can have issues with passing data.
The issue is related to the data envelop that the chipsets push.

I would strongly suggest the lower spec shorter cables are not adequate and you need active cables between devices and the amp, then active type from the amp to the display.




Masterpiece Calibration Ltd, isf certified

 

 

"I'm not a robot!"

5573 posts

Uber Geek


  # 1681418 2-Dec-2016 17:45
Send private message

Masterpiece:

Note here that looking up the Dynamix site I find that 18Gbps (C_HDMI20-20) cables are active types, single direction.

 

OP is using a 10m cable, not the 20m active one


D.W

558 posts

Ultimate Geek


  # 1681419 2-Dec-2016 17:46
Send private message

Masterpiece:

Note here that looking up the Dynamix site I find that 18Gbps (C_HDMI20-20) cables are active types, single direction.

 

I believe only the 20M is active.


 
 
 
 


4204 posts

Uber Geek


  # 1681420 2-Dec-2016 17:47
Send private message

I have cheap Dynamix 15m HDMI cables that work perfectly (and I wasnt gentle running them in either haha). I would be looking at your PDL connectors. Are the in such a way you could connect the dynamix cable directly to the amp/tv. Assuming the PDL wall plates are just female/female connectors could be something dodgy there?


242 posts

Master Geek


  # 1681429 2-Dec-2016 18:07
Send private message

If not active, well i'd be surprised if they can do 18Gbps, anywhoo


Rough guide for Gbps

3840*2160 @24 8bit 4:4:4 = 8.91Gbps
(most high speed HDMI rated at 10.2 Gbps will work...maybe.)

3840*2160 @50/60 8bit 4:4:4 = 17.82Gps



Try a lower setting, see if you get a signal at 1080p24 8bit then work you way up the settings




Masterpiece Calibration Ltd, isf certified

 

 

"I'm not a robot!"

3594 posts

Uber Geek


  # 1681633 3-Dec-2016 11:18
Send private message

Lose the wall plates all together.

 

 

 

While you're there, install a coax cable... then buy an optical over coaxial solution for when ARC goes wrong... and yes, I suspect with your installation, HDMI CEC will go wrong.

 

 

 

Or, as most people recommend, go HD-BaseT (one that comes with ARC and optical return).

 

While you're at it, run a Cat cable for data.


22507 posts

Uber Geek

Trusted
Subscriber

  # 1681638 3-Dec-2016 11:25
Send private message

I have had wall plate passthru hdmi things that have been complete crap on their own, even with 2 short cables caused sparkles or nothing to happen. I suspect that inside between the 2 sockets they are just a very basic design without any care for keeping the impedance correct or anything like that.





Richard rich.ms



61 posts

Master Geek


  # 1686538 12-Dec-2016 13:34
Send private message

An update on the HDMI cabling, I purchased two 1m v2.0 HDMI cables with the same specs as the original 10m Dynamix cable, and everything is now working correctly. This includes the PDL HDMI wall plates, the ARC audio, and Bluray videos in full HD.

 

 


Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Logitech introduces new Made for Google keyboard and mouse devices
Posted 16-Oct-2019 13:36


MATTR launches to accelerate decentralised identity
Posted 16-Oct-2019 10:28


Vodafone X-Squad powers up for customers
Posted 16-Oct-2019 08:15


D Link ANZ launches EXO Smart Mesh Wi Fi Routers with McAfee protection
Posted 15-Oct-2019 11:31


Major Japanese retailer partners with smart New Zealand technology IMAGR
Posted 14-Oct-2019 10:29


Ola pioneers one-time passcode feature to fight rideshare fraud
Posted 14-Oct-2019 10:24


Spark Sport new home of NZC matches from 2020
Posted 10-Oct-2019 09:59


Meet Nola, Noel Leeming's new digital employee
Posted 4-Oct-2019 08:07


Registrations for Sprout Accelerator open for 2020 season
Posted 4-Oct-2019 08:02


Teletrac Navman welcomes AI tech leader Jens Meggers as new President
Posted 4-Oct-2019 07:41


Vodafone makes voice of 4G (VoLTE) official
Posted 4-Oct-2019 07:36


2degrees Reaches Milestone of 100,000 Broadband Customers
Posted 1-Oct-2019 09:17


Nokia 1 Plus available in New Zealand from 2nd October
Posted 30-Sep-2019 17:46


Ola integrates Apple Pay as payment method in New Zealand
Posted 25-Sep-2019 09:51


Facebook Portal to land in New Zealand
Posted 19-Sep-2019 18:35



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.