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Topic:
HDMI protocol cables and Switchers
This thread has 6 replies. Displaying all posts.
Post 1 made on Wednesday September 14, 2005 at 11:15
Audible Solutionns
Super Member
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3,246
I am trying to master the art of playing well with others and as I am more guilty than most of hijacking threads I thought it better form to begin a new thread on HDMI rather than continue to comment on it in a thread on alternative analog matrix switchers.

One of the reasons for having a scaler within a HDMI switcher is so you can calibrate different sources on to a common input on a display. It is really not so disimilar to how why having a scaler on a display where a matrix analog switcher feeds a common comonent or composite input. How's this for a non sequitor. How do others calibrate their display when they are using a sclaler in a system connected to a single input on the display. Sure you can save settings for each device on the scaler. But how do you calibrate the input on the display? I have found that following test pattarns to the letter often yields an unwatchable signal in practice ( ok, not unwatchable but problematic. Here I have gone and hijacked my own thread! )

Anyone have any issues with long runs of HDMI not syncing HDCP? Was a scaler in the system?

Alan
"This is a Christian Country,Charlie,founded on Christian values...when you can't put a nativiy scene in front fire house at Christmas time in Nacogdoches Township, something's gone terribly wrong"
Post 2 made on Wednesday September 14, 2005 at 14:07
2nd rick
Super Member
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4,521
Alan,
Do you know if the EDID info from the display is still locked??

I had an issue with a JVC DLA-HX1U connected to a Faroudja NR-DVI... As you experienced, I had an unwatchable image that I couldn't adjust in any way.

Everyone said the D-ILA's EDID handshake with the NR-DVI was to blame... William Phelps offered to fix it, but only as a part of a $1K calibration, and I needed to send both units to Cali.

So, component video it is!! and the picture is stunning.

Even the last system I worked on, a user supplied Toshiba 62" DLP and a Samsung DVD player w/ HDMI out, looked terrible to me.
Maybe it was the cheap DVD player or the DLP pixel ringing that seems to always stand out to me, but the picture was very one dimensional and looked like it needed the sharpness/edge detail brought down.
I am certain that the white levels and black levels were WAY off, because the picture looked like a typical crappy retail showroom TV.

HDMI w/ HDCP is supposed to be a better way to acheive this, but I am still connecting everything via component so I can access the controls.
Rick Murphy
Troy, MI
Post 3 made on Wednesday September 14, 2005 at 14:11
Brentm
Ethereal Home Theater
Joined:
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July 2003
2,688
Samsung has an overvoltage output when using HDMI, it will be a problem.
There are also HDCP issues when using any kind of switcher. Pioneer, Denon, Yamaha & others are working on this with the HDMI group.
Could take a while.
And no, 1.2 does not address this.
Brent McCall
Paid Endorser for;
Ethereal (386) 846-7264 Cell
Post 4 made on Wednesday September 14, 2005 at 14:29
2nd rick
Super Member
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4,521
Brent,
So if that DVD player were a Sony, Panasonic, or Toshiba player for $99 or less, we wouldn't have that problem??
Rick Murphy
Troy, MI
Post 5 made on Wednesday September 14, 2005 at 14:34
Brentm
Ethereal Home Theater
Joined:
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July 2003
2,688
Sorry, I dont know about Sony or Panasonic.
Toshiba did have an undervoltage issue (seen as low as 285 mv.).
HDCP issues with S.A.8300 but no HDMI problems.
HDCP issues are indusrty wide.
There is a cert. test for HDMI but not HDCP.
BTW. having a certification only guarranties that the product meets min. standards not that it actually works.
Hang on boys. This will be fun. LOL
Brent McCall
Paid Endorser for;
Ethereal (386) 846-7264 Cell
Post 6 made on Wednesday September 14, 2005 at 15:36
2nd rick
Super Member
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Component video it is!!

I prefer that anyway, because I can make my own broadcast caliber cables in the field.
Rick Murphy
Troy, MI
Post 7 made on Thursday September 15, 2005 at 02:34
fluid-druid
Senior Member
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June 2005
1,312
I agree with 2nd Rick and the others who vote for component. At least at this time.. I've found too many issues with HDMI, from totally ruined analog channels on digital cable boxes, to problems with video or audio not working (in our store we had totally unpredicatable results using a Denon DVD3910 and AVR4806 to switch audio/video.... worked 50% of the time, and then just stopped)

Btw, this is not a slam of Denon, because I personally love their products, and I moved the 4806 into my theater demo, and I can use the 2 component video ouputs to drive two projectors.... looks awesome.
...couple a thumb tacks and a stick of double sided tape should hold this baby up...


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