longer hdmi cable at DVinfo.net

Cees van Kempen · April 29th, 2015, 08:21 AM

When connecting the a7s to my Shogun with a 2mtr hdmi cable it all works fine. When using a 5mtr cable I get no input, even though the specs of the cable say it is 4K compatible. Tried it with two cables of different brands. Does anyone know why, or even better, have a solution?

Gary Huff · May 1st, 2015, 09:01 AM

Is this 5 meter long cable Full to Full or Micro to Full?

Cees van Kempen · May 2nd, 2015, 09:16 AM

It's micro to full. So no additional connector that may cause loss of signal.

Gary Huff · May 2nd, 2015, 02:25 PM

I know from some longer cables that there is one particular end that needs to be plugged into the the receiving device and the other end needs to plug into the sending device. You might want to make sure your cable isn't one of those, and especially that if it is, that the "To TV" connector is the full HDMI and not the micro. Which, it doesn't seem logical to make the "To TV" end the micro, but you never know.

You can also try your cable with the A7S in 1080 mode and see if that works too if you haven't already. That would help know where the issue lies.

UPDATE: I have a 3 meter long cable (longest I own) that is micro to Full. Micro head has "Source" on it and Full head has "TV" on it. Works fine with 4K and 10-bit. Those extra 2 meters with yours could be making all the difference, but I would definitely check to see if you have Source and TV listed on your cable and which ends they are printed on.

Cees van Kempen · May 5th, 2015, 11:22 AM

Gary,

When I switch to 1080p it all wrks fine. So it has nothing to do with the wrong direction of the cable. It also works with my Gopro at 2.7K. I think it is just due to the size of the data that it gets messed up in the longer cable.

Steve Game · May 5th, 2015, 12:03 PM

Would it be that the data rate is higher at 4K than with 1080p and even 2.7K?

Cees van Kempen · May 8th, 2015, 11:02 AM

Might be.
Also noticed that when using my a7s/Shogun combo with a 2 mtrs cable I sometimes get a frame with a horizontal line/block of pixels that are white. Always at the lower part of the picture, but at changing places. Which looks to me like a glitch in the transformation of data to the Shogun. Never noticed this before when using a short cable. It seems that it is only safe to use short cables.

April 29th, 2015, 08:21 AM	#1
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	longer hdmi cable When connecting the a7s to my Shogun with a 2mtr hdmi cable it all works fine. When using a 5mtr cable I get no input, even though the specs of the cable say it is 4K compatible. Tried it with two cables of different brands. Does anyone know why, or even better, have a solution? __________________ Cees van Kempen www.iwp-wildlife.com

May 1st, 2015, 09:01 AM	#2
Gary Huff Inner Circle Join Date: Jan 2013 Location: Austin, Texas Posts: 2,006	Re: longer hdmi cable Is this 5 meter long cable Full to Full or Micro to Full?

May 2nd, 2015, 09:16 AM	#3
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	Re: longer hdmi cable It's micro to full. So no additional connector that may cause loss of signal. __________________ Cees van Kempen www.iwp-wildlife.com

May 2nd, 2015, 02:25 PM	#4
Gary Huff Inner Circle Join Date: Jan 2013 Location: Austin, Texas Posts: 2,006	Re: longer hdmi cable I know from some longer cables that there is one particular end that needs to be plugged into the the receiving device and the other end needs to plug into the sending device. You might want to make sure your cable isn't one of those, and especially that if it is, that the "To TV" connector is the full HDMI and not the micro. Which, it doesn't seem logical to make the "To TV" end the micro, but you never know. You can also try your cable with the A7S in 1080 mode and see if that works too if you haven't already. That would help know where the issue lies. UPDATE: I have a 3 meter long cable (longest I own) that is micro to Full. Micro head has "Source" on it and Full head has "TV" on it. Works fine with 4K and 10-bit. Those extra 2 meters with yours could be making all the difference, but I would definitely check to see if you have Source and TV listed on your cable and which ends they are printed on. Last edited by Gary Huff; May 3rd, 2015 at 08:37 AM.

May 5th, 2015, 11:22 AM	#5
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	Re: longer hdmi cable Gary, When I switch to 1080p it all wrks fine. So it has nothing to do with the wrong direction of the cable. It also works with my Gopro at 2.7K. I think it is just due to the size of the data that it gets messed up in the longer cable. __________________ Cees van Kempen www.iwp-wildlife.com

May 5th, 2015, 12:03 PM	#6
Steve Game Major Player Join Date: Mar 2011 Location: London, UK Posts: 353	Re: longer hdmi cable Would it be that the data rate is higher at 4K than with 1080p and even 2.7K?

May 8th, 2015, 11:02 AM	#7
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	Re: longer hdmi cable Might be. Also noticed that when using my a7s/Shogun combo with a 2 mtrs cable I sometimes get a frame with a horizontal line/block of pixels that are white. Always at the lower part of the picture, but at changing places. Which looks to me like a glitch in the transformation of data to the Shogun. Never noticed this before when using a short cable. It seems that it is only safe to use short cables. __________________ Cees van Kempen www.iwp-wildlife.com