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The following page was printed from RemoteCentral.com:
| Topic: | Snap B300 HDMI 4x4 matrix ( Day From Hell) This thread has 100 replies. Displaying posts 46 through 60. |
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| Post 46 made on Saturday March 31, 2012 at 21:59 |
Audible Solutions Super Member |
Joined:
Posts: | March 2004
3,246 |
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On March 31, 2012 at 19:49, AnthonyZ said...
Electricity is lazy and looking for the easiest path to ground. My understanding is that you ground a single side to eliminate any potential resistance via the devices. Grounding on a single side provides the path of least resistance. I deleted an earlier post as this comment is not entirely germaine to this thread. The flow of eddy currents is vector calculus. If you do the math it turns out that the current will always flow from send to receive. Always. This is true for analog or digital circuits. If you ground at receive you provide a path for the eddy current to flow. Grounding at the device sending the signal provides no path for the eddy current to follow. In a 485 circuit, an analog circuit, a 232 circuit, a digital circuit it is good practice to tie drain (or shield ) to to ground at send and float it at receive. I think what SnapAV is doing here is very, very smart. I wish more companies permitted their staff to monitor these boards and respond to questions. Not only do you keep current dealers happy but you impress those who are not to get off of the fense. You don't want to get involved in the chatter. I think it does a lot for brand loyalty.
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"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" |
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| OP | Post 47 made on Tuesday April 3, 2012 at 06:23 |
Gman Select Member |
Joined:
Posts: | February 2009
2,244 |
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I spoke to a QA engineer today and he confirmed that on short cable runs under 100 feet, 568A vs. 568B makes no difference. He is suggesting that it could be an issue with the DVD player. We are going to put another BluRay in to see if the behaviour continues.
On another note, I mentioned that we had spec'd the same switcher into a job that we were just awarded. This project has a Philips TV in the master bedroom and the QA engineer said that he has had issues with this brand in the past and it may require an HDMI re-timer, whatever that is.
I got off the phone not feeling very confident about this product. Will cross our fingers and hope for the best but it looks like Crestron DM will be our go to product from here on in.
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| Post 48 made on Tuesday April 3, 2012 at 07:30 |
Hasbeen Loyal Member |
Joined:
Posts: | November 2007
5,273 |
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For what it's worth, I've also had issues with certain BD players and HDMI baluns/long distances.
Samsung BD5500 or lower
Sony BD Players don't like to travel longer distances.
Check the "Deep Color" settting on the unit. Make sure it's off.
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| Post 49 made on Tuesday April 3, 2012 at 11:15 |
Mogul Senior Member |
Joined:
Posts: | May 2010
1,164 |
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For the record, I've seen/heard claims from S. Lampen at Belden that the Platinum EZ-RJ45 "pull through" connectors provide generally superior and more reliable data connections than standard connectors, due in part to the ability to pull each conductor tightly into the shell, thereby minimizing gapping in twisted pairs.
I've used them exclusively for nearly 6 years now for both HSD and HDMI baluns without a problem.
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"Whatever is rightly done, however humble, is noble." [Sir Henry Royce] |
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| Post 50 made on Tuesday April 3, 2012 at 11:21 |
Brentm Ethereal Home Theater |
Joined:
Posts: | July 2003
2,688 |
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Not to argue with Mr. Lampen, but 6 years of sales and support experience with dealers attempting to use EZ45's and failing tells me otherwise.
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Brent McCall
Paid Endorser for;
Ethereal (386) 846-7264 Cell |
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| Post 51 made on Tuesday April 3, 2012 at 13:17 |
Hasbeen Loyal Member |
Joined:
Posts: | November 2007
5,273 |
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On April 3, 2012 at 11:21, Brentm said...
Not to argue with Mr. Lampen, but 6 years of sales and support experience with dealers attempting to use EZ45's and failing tells me otherwise. +1. I don't know of any manufacturer that doesn't say DON'T USE EZ-45's.
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| OP | Post 52 made on Tuesday April 3, 2012 at 19:04 |
Gman Select Member |
Joined:
Posts: | February 2009
2,244 |
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On April 3, 2012 at 07:30, Hasbeen said...
For what it's worth, I've also had issues with certain BD players and HDMI baluns/long distances.
Samsung BD5500 or lower
Sony BD Players don't like to travel longer distances.
Check the "Deep Color" settting on the unit. Make sure it's off. I will certainly look at that when we get back on site...Thanks
Last edited by Gman on April 3, 2012 19:52.
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| Post 53 made on Tuesday April 3, 2012 at 22:21 |
skyflyer007 Long Time Member |
Joined:
Posts: | July 2004
279 |
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On March 30, 2012 at 22:05, schlepp571 said...
The difference is actually palpable. All of the manufacturers chose a standard and designed their data transmissions to be maximized by using that standard. The number of twists per unit length is the issue. The green and orange pairs have different number of twists. We all know how HDMI is finicky at best with the cable. Implement it over twisted pairs and use a different standard than recommended, boom issues most of the time. Micro-reflections can easily cause the issues you bring up due to non standard wiring terminations. Not saying that it is causing the real problem. I always pull shielded cat-6 for any HDMI matrix solution as I had nothing but problems with non-shielded. For the last year (fingers crossed while knocking on wood) I have had none on 4 Snap 4x4 matrix installs. Best of luck with finding the solution. Bull
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| Post 54 made on Tuesday April 3, 2012 at 22:56 |
Brentm Ethereal Home Theater |
Joined:
Posts: | July 2003
2,688 |
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On April 3, 2012 at 22:21, skyflyer007 said...
Bull Agreed. I have looked many times to find an actual wire twist spec for the different Cat/x cables. All that I can find is that Cat/5 is 3-4 TPI +/- and that 5e has more and 6 has even more, but no actual Color/TPI. BTW: Very few "mfgr's" choose the color code. That decision was made by some guy in China (where 99% of these things come from) who I am sure thought Hmmmm cat/5, RJ45 lets use 568 ("B" was picked by the person making the setup guide).
Last edited by Brentm on April 4, 2012 07:17.
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Brent McCall
Paid Endorser for;
Ethereal (386) 846-7264 Cell |
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| Post 55 made on Wednesday April 4, 2012 at 03:10 |
WhiteVan Lifestyle Loyal Member |
Joined:
Posts: | July 2007
5,108 |
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On April 3, 2012 at 07:30, Hasbeen said...
For what it's worth, I've also had issues with certain BD players and HDMI baluns/long distances.
Samsung BD5500 or lower
Sony BD Players don't like to travel longer distances.
Check the "Deep Color" settting on the unit. Make sure it's off. Ditto
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Safe 'n Sound Central Coast CA www.mysafensound.com [Link: facebook.com] |
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| Post 56 made on Wednesday April 4, 2012 at 05:27 |
simoneales Select Member |
Joined:
Posts: | May 2005
1,782 |
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I see in post 4 that you are using an older LG DVD player. My experience with older LG units connected via HDMI is all negative, even connected to a LG panel. I know this thread has headed in a different direction but I'd definitely be taking another (better quality) unit along to try.
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I guarantee I'll tell you the truth and I guarantee I'll tell you what you need to know but I can't guarantee that I'll be telling you anything you want to hear. |
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| OP | Post 57 made on Wednesday April 4, 2012 at 06:22 |
Gman Select Member |
Joined:
Posts: | February 2009
2,244 |
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On April 4, 2012 at 05:27, simoneales said...
I see in post 4 that you are using an older LG DVD player. My experience with older LG units connected via HDMI is all negative, even connected to a LG panel. I know this thread has headed in a different direction but I'd definitely be taking another (better quality) unit along to try. There is a new LG BluRay on this project that I'm using which is not part of the HDMI matrix so I'm going to disconnect the DVD and connect the BluRay to see if it makes a difference. I'll also take my Sony BluRay from the shop so I can set up a lab on site..:)
Last edited by Gman on April 4, 2012 06:53.
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| Post 58 made on Wednesday April 4, 2012 at 22:49 |
WhiteVan Lifestyle Loyal Member |
Joined:
Posts: | July 2007
5,108 |
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Anybody used this Matrix and have opinions outside of whats going on with Gman?
I got a little promo offer that makes me really want to give it a shot and a Control4 upgrade that it fits perfectly into.
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Safe 'n Sound Central Coast CA www.mysafensound.com [Link: facebook.com] |
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| Post 59 made on Wednesday April 4, 2012 at 22:53 |
SB Smarthomes Super Member |
Joined:
Posts: | July 2007
2,634 |
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I've had one for a couple weeks, but don't have it out of the box yet. Job should be ready for install in the next 4-6 weeks. I might set it up in the shop to do a little testing (rs-232) if I have time.
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www.sbsmarthomes.comSanta Barbara Smarthomes |
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| Post 60 made on Wednesday April 4, 2012 at 22:56 |
KRAZYK Long Time Member |
Joined:
Posts: | October 2010
482 |
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On March 30, 2012 at 21:24, skyflyer007 said...
Whoever told you that wiring a CAT5 with the B standard is better performance than A is crazy and just wrong. There is absolutely no difference in performance with A or B type wiring. I have verified this with a network verification tester.
The only difference in the wiring is changing the orange and green pair.
Total BS if someone believes either method is better performance. +1000 Agreed..........total bullshit. You will be wasting more time swapping pairs!
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KRAZYK
Things you own end up owning you! |
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