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using gtx 275 .. how to connect video monitor and tv to card?
I tried using a dvi splitter on just the first dvi port .. one to
monitor, one to hdmi ( dvi to hdmi ) port on the tv. Whooeee! That did not work at all. The tv generated some kind of goofy problem with the card clock, and the whole thing went nuts. So, is it possible to put the tv on the 2nd dvi port on the back of the 275, and tell that port it is going to a tv .. without goofing up the first port timing and frame rate going to the monitor ? I would like to be able to choose which one I'm using, and shut the other off without disturbing the setup ... just want something like a desktop icon to choose which monitor. johns |
#2
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using gtx 275 .. how to connect video monitor and tv to card?
johns wrote:
I tried using a dvi splitter on just the first dvi port .. one to monitor, one to hdmi ( dvi to hdmi ) port on the tv. Whooeee! That did not work at all. The tv generated some kind of goofy problem with the card clock, and the whole thing went nuts. So, is it possible to put the tv on the 2nd dvi port on the back of the 275, and tell that port it is going to a tv .. without goofing up the first port timing and frame rate going to the monitor ? I would like to be able to choose which one I'm using, and shut the other off without disturbing the setup ... just want something like a desktop icon to choose which monitor. johns The high speed digital signals consist of "data+" and "data-". The two signals behave the exact opposite of one another. And, that's called differential signal transmission. The signals are normally terminated by a single resistor across the two signals, on the receiving display device. Simple-minded passive splitters, they send "data+" to one monitor, and "data-" to the other monitor. The signal level is around half of the normal amplitude. A better solution, is an active buffer. http://www.gefen.com/kvm/dproduct2.jsp?prod_id=3571 There is one DVI in, and two DVI out. Of the two DVI out, one is designated the "primary" output. The EDID (resolution table) of the primary monitor, is used by the OS when it comes time to select a resolution. The EDID of the second monitor is disconnected. The second monitor is "slaved" (not in control of its own destiny). In order for the slave to receive a valid signal, you have to find a resolution that both display devices share. With the primary device only connected, you use the Windows display control to set the display to that "common" value. Then, when the secondary display is connected to the second connector, it receives a valid signal right away. (It isn't that important to do it that way, and I'm mainly explaining this to give some idea how it works.) If you just connect both monitors, and select a resolution to drive the Primary display, without thought to the secondary, then the secondary will pop up its OSD and say "Out Of Range" to the incoming signal. When a resolution they both share is selected, then both screens will have the same content viewable. That works better than the missing "mirror mode", removed from the Nvidia driver years ago. Summary: Buy an active buffer. Read the manual for it before you buy, to understand how it works. Note - when I use a Gefen product as an example, it doesn't mean to run out and buy one. Gefen stuff is expensive. The above box is $350, and has its own wall adapter. There's no particular reason such a box should cost $350. Look around. Here's one for $80. Users aren't that pleased, perhaps because the manual sucks and didn't explain things well ? http://www.newegg.com/Product/Produc...82E16817422028 That one includes a power adapter, so you know it's "active" and not a ripoff "passive" type. OK, the manual has no details, as to which output connector is the "primary" and has the EDID connected to the computer. So this is a "buy and pray" product. http://aluratek.com/cms/legacy/downl...ADS04F_QSG.pdf ******* At the $350 price point, not only would I expect a DVI splitter, I would expect a scalar as well. In the crappy example I made up below, the scaler scales the output to a lower resolution that the secondary monitor supports. The secondary monitor EDID is read by the scaler. The primary monitor EDID is read by the computer. This is the kind of function I'd expect for $350. Computer ---- 1920x1080 ------ splitter/scaler ----- 1920x1080--- primary | +---- 640x480 --- secondary To just digitally buffer the DVI signal, shouldn't cost $350 to build. Unless, of course, you're running it through a scalar, and leaving the resolution the same anyway. (Effectively null digital regeneration.) ******* Perhaps what you're looking for, is a KVM of some sort, if you seek to randomly turn off one of the monitors. But a KVM doesn't generally "broadcast" to two monitors at the same time. So a KVM is not a splitter, and a splitter is not a KVM, if you get my drift. It's possible if you go to a KVM manufacturer site, you can find something that does what you want. You can undoubtedly get the function you seek, for $1000 or so. But for less money, you can get something approximately "good enough". It really all depends, when the primary monitor has its screen switched off with the soft power button, whether the EDID remains available or not. In theory, the EDID should still be working. But we can't be sure of that, and perhaps instead the secondary monitor goes nuts and the resolution is set to something silly. So while the active splitter may come very close, there might still be monitor mixes, where you'll need to leave the primary powered up. Anyway, even if I didn't do a good job of answering your question, at least dump the passive splitter. Because it's just a bad idea. Paul |
#3
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using gtx 275 .. how to connect video monitor and tv to card?
Anyway, even if I didn't do a good job of answering
your question, at least dump the passive splitter. Because it's just a bad idea. Thanks. Looks like I've got some reading to do. I notice in my Nvidia setup panel, there's an option to set up a tv. Wonder if that tells one of the dvi ports its going to a tv, and don't mess with the other monitor ? Fat chance, but ?? johns |
#4
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using gtx 275 .. how to connect video monitor and tv to card?
johns wrote:
Anyway, even if I didn't do a good job of answering your question, at least dump the passive splitter. Because it's just a bad idea. Thanks. Looks like I've got some reading to do. I notice in my Nvidia setup panel, there's an option to set up a tv. Wonder if that tells one of the dvi ports its going to a tv, and don't mess with the other monitor ? Fat chance, but ?? johns OK, it's a GTX 275. I tried an image search, and got a picture like this. http://images.bit-tech.net/content_i...5-review/1.jpg I see a mini-DIN at the top of the card, and that's your "TV" connector. See if your card has one of those. There are other models, that only have digital connectors on the faceplate (no TV). Mini-DIN come in a number of pin counts and configurations. And whether the card is ATI or NVidia, also affects the pinout (which pin has which signal on it). I seem to remember a site that had the pinouts all on one page, so you could compare them. I don't seem to have that bookmarked, and the info on Wikipedia isn't good enough for this. They used to provide a breakout cable with the mini-DIN, like composite, SVideo (4 pin), or component (YPbPr). But in later years, they'd sometimes put the connector on the card, and not put the right cable in the box. I've got one card here, all it comes with is an SVideo 4 pin to 4 pin cable. Whereas the high quality output would be the analog YPbPr one (coax connectors in red, green, and blue). This isn't exactly it either, as this is a VIVO cable, but at least it illustrates the notion of "breakout". Do you remember getting a cable like this ? I suppose if there's no mini-DIN on your card, then you won't remember seeing one of these. http://en.wikipedia.org/wiki/Video-in_video-out_(VIVO) Paul |
#5
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using gtx 275 .. how to connect video monitor and tv to card?
"Paul" wrote in message ... johns wrote: Anyway, even if I didn't do a good job of answering your question, at least dump the passive splitter. Because it's just a bad idea. Thanks. Looks like I've got some reading to do. I notice in my Nvidia setup panel, there's an option to set up a tv. Wonder if that tells one of the dvi ports its going to a tv, and don't mess with the other monitor ? Fat chance, but ?? johns OK, it's a GTX 275. I tried an image search, and got a picture like this. http://images.bit-tech.net/content_i...5-review/1.jpg I see a mini-DIN at the top of the card, and that's your "TV" connector. See if your card has one of those. There are other models, that only have digital connectors on the faceplate (no TV). Mini-DIN come in a number of pin counts and configurations. And whether the card is ATI or NVidia, also affects the pinout (which pin has which signal on it). I seem to remember a site that had the pinouts all on one page, so you could compare them. I don't seem to have that bookmarked, and the info on Wikipedia isn't good enough for this. They used to provide a breakout cable with the mini-DIN, like composite, SVideo (4 pin), or component (YPbPr). But in later years, they'd sometimes put the connector on the card, and not put the right cable in the box. I've got one card here, all it comes with is an SVideo 4 pin to 4 pin cable. Whereas the high quality output would be the analog YPbPr one (coax connectors in red, green, and blue). This isn't exactly it either, as this is a VIVO cable, but at least it illustrates the notion of "breakout". Do you remember getting a cable like this ? I suppose if there's no mini-DIN on your card, then you won't remember seeing one of these. http://en.wikipedia.org/wiki/Video-in_video-out_(VIVO) Paul This eBay seller has this..... http://www.ebay.com/itm/261142320233...84.m1558.l2649 Any help? Chris |
#6
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using gtx 275 .. how to connect video monitor and tv to card?
Chris S. wrote:
"Paul" wrote in message ... johns wrote: Anyway, even if I didn't do a good job of answering your question, at least dump the passive splitter. Because it's just a bad idea. Thanks. Looks like I've got some reading to do. I notice in my Nvidia setup panel, there's an option to set up a tv. Wonder if that tells one of the dvi ports its going to a tv, and don't mess with the other monitor ? Fat chance, but ?? johns OK, it's a GTX 275. I tried an image search, and got a picture like this. http://images.bit-tech.net/content_i...5-review/1.jpg I see a mini-DIN at the top of the card, and that's your "TV" connector. See if your card has one of those. There are other models, that only have digital connectors on the faceplate (no TV). Mini-DIN come in a number of pin counts and configurations. And whether the card is ATI or NVidia, also affects the pinout (which pin has which signal on it). I seem to remember a site that had the pinouts all on one page, so you could compare them. I don't seem to have that bookmarked, and the info on Wikipedia isn't good enough for this. They used to provide a breakout cable with the mini-DIN, like composite, SVideo (4 pin), or component (YPbPr). But in later years, they'd sometimes put the connector on the card, and not put the right cable in the box. I've got one card here, all it comes with is an SVideo 4 pin to 4 pin cable. Whereas the high quality output would be the analog YPbPr one (coax connectors in red, green, and blue). This isn't exactly it either, as this is a VIVO cable, but at least it illustrates the notion of "breakout". Do you remember getting a cable like this ? I suppose if there's no mini-DIN on your card, then you won't remember seeing one of these. http://en.wikipedia.org/wiki/Video-in_video-out_(VIVO) Paul This eBay seller has this..... http://www.ebay.com/itm/261142320233...84.m1558.l2649 Any help? Chris Well, first you look at the pin count on your mini-DIN, before jumping for joy. Notice how a 7 pin, would not fit a 9 pin video card. http://en.wikipedia.org/wiki/Mini-din The 4 pin S-Video, fits just about all the connectors. http://en.wikipedia.org/wiki/S-Video But a full breakout cable, you'd likely need to more carefully match it to what is on your faceplate. One of the pin counts would be for VIVO (not likely to be on the GTX 275), while a connector with a couple fewer pins might be video out only. So it could well be, that the 7 pin is the right one - I'd just advising to do your homework first, so you don't end up with a drawer full of useless cables. They're not all fully interchangeable, and there can even be differences between how ATI and NVidia do it (same pin count, different pin usage). Paul |
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