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SDI to DVI Scenario

677 Views 9 Replies 6 Participants Last post by  Tong Chia, 
M
I'm hoping to extend my SDI DVD player signal from one room to another over coax then convert it to DVI and connect to a Samsung 240T (WUXGA) or a NEC 1980sx (SXGA) monitor (via DVI of course). I've found three relatively cheap SDI-DVI converters ( Gefen , Miranda , and Doremi Labs ), I gather they will translate a SDI based 480i signal to a DVI output- all three manufacturers mention that they NTSC, PAL, 720p, 1080p, 1080i at all frame rates but non really explain what the DVI will output exactly. Should I trust the scaling of the converters+the monitors auto sync or purchase a scaler to fit the native resolution of either monitor optimally. Another question is do I need a line doubler, given that SDI in 480i -> DVI 480P -> monitor (which scales to 1920x1200 or 1600x1200 progressive)?


The second phase of this project will be to mod a HD-TIVO (hopefully possible) and do likewise, this time moving from SD-SDI to HD-SDI to Dual Link DVI with a DVI KVM choosing the DVD or TIVO output.
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M
bump!!
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M
Quote:
Originally posted by mburnstein
bump!!
I've ordered all three converters, should have them mid april. I'm worried about taking non VESA resolutions to the WUXGA monitor. If anyone else has experience with these units please let me, & others, know.
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M
You said you found 3 inexpensive SDI-DVI converters, I click the geffen link and its about $1000 ! Just caught me by surprise thats all. Let us know how they work out for you.
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M
Quote:
Originally posted by mrcaseyb
You said you found 3 inexpensive SDI-DVI converters, I click the geffen link and its about $1000 ! Just caught me by surprise thats all. Let us know how they work out for you.
hehe. I said "relatively" inexpensive. When it comes to SDI nothing is rock bottom inexpensive.
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CINERAMAX
The Geffen system Upconverts 480i to at least to 480p. There is no 480i DVI resolution. This troubles me , what the hell does geffen know about scaling?
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T
Quote:
Originally posted by melechmet

I'm worried about taking non VESA resolutions to the WUXGA monitor.

If anyone else has experience with these units please let me, & others, know.
I am not sure about the converters but I have the 240T

and it worked with everything I threw at it

including the PC,my MAC ,the D-1 Bravo,Samsung TS-160,

Hughes HTL-HD


I have used it with 480i (VGA input only),480p,720p,1080i,1080p

and 1200p. I am currently using it with the HD-Leeza at 1920x1200:D
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M
Quote:
Originally posted by Tong Chia
I am not sure about the converters but I have the 240T

and it worked with everything I threw at it

including the PC,my MAC ,the D-1 Bravo,Samsung TS-160,

Hughes HTL-HD


I have used it with 480i (VGA input only),480p,720p,1080i,1080p

and 1200p. I am currently using it with the HD-Leeza at 1920x1200:D
How did you pass 480P, 720P stuff (bravo, etc), through the HD-Leeza via HD15 (vga)? I hope that my monitor(s) scaler (on NEC 1920sx+ and Sammy 240T) can deal with the incoming signal (480i/p etc) through the SDI-DVI converter, w/o the benefit of an external scaler. BTW, it's not money (I'd get the scaler) it's a space issue.


I presume at the very least the 480i is made pregressive by all the devices in conversion to DVI.
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M
Peter makes a very good point. I would not trust a cheapo SDI->DVI converter with 480i signals. DVI does not have 480i support, only 480p, so that means that such a converter would have to deinterlace. There's no way I'd trust a cheap device to do deinterlacing, unless I knew it had a first-tier deinterlacer chip inside.
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T
Quote:
How did you pass 480P, 720P stuff (bravo, etc), through the HD-Leeza via HD15 (vga)?
The analog 480p,720p stuff came mainly from the Samsung and Hughes

set-tops. and went direct to the 240T's VGA input before I got the

HD-Leeza (HDL)


I use the the digital (DVI & SDI) inputs and outputs on the HDL mainly

with the exception of composite for the Laserdisk. right now

the 240T is connected to the HDL.


I only use the DVI out from the Bravo.
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