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#69693 - 07/19/09 02:35 PM Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
I am wondering if it is possible to use the 990's DVI switch "backwards". I want to switch one blueray player between a front projector and a flat panel TV. In other words use the DVI out as an input and DVI in's as outputs. Anyone tried this?

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#69694 - 07/19/09 03:49 PM Re: Use 990 DVI Switch backwards
gonk Offline
Desperado

Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
I haven't tried it or heard of anyone else doing it. I'm not sure what foibles might crop up with HDCP under these circumstances.
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gonk
HT Basics | HDMI FAQ | Pics | Remote Files | Art Show
Reviews: Index | 990 | speakers | BDP-93

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#69695 - 07/19/09 06:39 PM Re: Use 990 DVI Switch backwards
SRW1000 Offline
Gunslinger

Registered: 10/03/05
Posts: 48
Loc: Wisconsin
You might want to give it a try, but don't expect it to work. I bought a manual, press-button type switcher from Monoprice, for just this purpose, and it wouldn't work correctly. It ended up changing some of the colors, and the electronics just wouldn't play nice.

I love the idea of HDMI, but there's way too much background stuff going on i the handshake process to make even the most simple-seeming ideas work.

Scott

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#69696 - 07/19/09 08:29 PM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
Thanks guys. I won't be trying an experiment, I kind of want to figure out what to do before buying some things. I haven't yet purchased the new TV part of the deal. I am still using an old analog set and feeding it via component 480i (only thing it can take) from the blueray. I am not sure I can use component any higher than 480i thanks to HDCP. The PJ now gets fed direct HDMI with no switch.

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#69697 - 07/19/09 08:31 PM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
Ohhh... PS.. Got the blueray for netflix online, otherwise would still be using an older dvd player.

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#69698 - 07/19/09 11:05 PM Re: Use 990 DVI Switch backwards
gonk Offline
Desperado

Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
There are some HDMI splitters made specifically for this sort of application, but they can be quirky (HDCP doesn't like to play nice with such things).

Component video is unaffected by HDCP, since HDCP is a digital protocol for copy protection and component is an analog signal. Component video can handle 720p or 1080i, and as long as nobody starts turning on the ICT (image constraint token) Blu-ray discs can be output at those resolutions. You can't do 1080p, though, and you won't get higher than 480p with copy-protected DVD's. And eventually (around 2012), the BDA has said that new Blu-ray players will be required to start phasing out analog video output, but that doesn't yet need to enter into the equation.
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gonk
HT Basics | HDMI FAQ | Pics | Remote Files | Art Show
Reviews: Index | 990 | speakers | BDP-93

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#69699 - 07/22/09 10:58 PM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
For others that may ask this question, Well I tried using the DVI switch "backwards" with one component (blueray + pj) on each side. It worked fine. I am guessing it will work with two, but don't know for sure. But, I will try when we finally replace the old TV set.

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#69700 - 07/23/09 10:26 PM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
Well -- it doesn't work anymore. Not sure if I had the cables confused or if it stopped. Whatever the case, it doesn't work now.

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#69701 - 07/23/09 11:00 PM Re: Use 990 DVI Switch backwards
XenonMan Offline
Desperado

Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
Does it still work frontways?
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner

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#69702 - 07/24/09 01:52 AM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
Ohh yes, it works fine using it the correct way.

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#69703 - 07/24/09 03:46 PM Re: Use 990 DVI Switch backwards
Bruce E Offline
Gunslinger

Registered: 09/22/06
Posts: 46
Loc: Ellicott City, MD
Eric A -

You've probably already thought of this, but here's what I do for my similar set-up: I run the component video monitor output to my old analog TV and the DVI monitor out to my front projector. Then I define two video inputs (e.g. Video 1 and Video 2), one that uses the DVD component inputs and one that uses the one of the DVI inputs (both inputs coming from my BD player). When I want to watch the analog TV I select the former input, and when I want to watch the projector, I select the latter.

Actually, now that I'm re-reading your posts, it looks like you're planning to get a new digital-input flat-panel TV (?). In that case, my set-up won't work unless you're willing to feed component video to the new set. I'm planning to do this as soon as my old analog set dies, but since I use the smaller screen only for "unimportant" video, I think the component video should be fine. If I'm watching a movie or HBO series or anything else where I really want a good image, then I always go with the front projector.

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#69704 - 07/24/09 05:09 PM Re: Use 990 DVI Switch backwards
Eric A Offline
Gunslinger

Registered: 11/26/05
Posts: 38
That is what I am doing now Bruce. The big complication was that my blueray (BD370)autoselects resolution based on the HDMI projector even when the projector is powered off. So that caused my old 480i TV to get 1080i out the component feed anytime I had the HDMI projector connected to the blueray. I finally figured out a way around this problem. I hooked the HDMI projector to the outlaws DVI switch and when using the TV via component I have to make sure I switch DVI off of the HDMI projector. The outlaw seems to keep the DVI connection going when you select a component connections - so I just select a "fake" setup I labeled "DVI Off" then I select the real setup to view the blueray via component video. It works and is better then manually unplugging the HDMI everytime, and macros make it painless. Getting it all to work was a pain - hopefully someone else finds the idea usefull.

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