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SDI to DVI problem
I am working with a customer who just purchased the AV-HS450 switcher from panasonic. It is running in 480i mode. They have Panasonic PT-D6000 projectors. There is no SDI input on that unit so they got a Black Magic SDI to HDMI converter. Plugged in an HDMI to DVI cable and fired it up. We had an image, but it was all green. After some phone calls, Black Magic stated that their box only outputs YUV color space. When hooking up HDMI directly to the projector (from and HMC-150) it worked fine.
So then we got an AJA HI5 converter. This has jumpers for RGB or YUV output. This should work fine. However, now we get just a black image.
They hooked up the HI5 to a standard DVI monitor and also had a black image.
We demonstrated the issue with the Black Magic converter to a Panasonic engineer and he was stumped.
Any ideas?
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16 Replies
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Scott:
Just to confirm, did you make sure you had the latest software from AJA and updated through the miniconfig software app? I had a similar problem when I first hooked it up and this solved the problem. Good Luck. -
I don’t have it right in front of me but I don’t believe the HI5 has a USB port. The HI5-3G does.
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Are you using the converters on the projector end or the switcher end? They should be on the projector end, run coax to the projector, then short jumper DVI cable from the converter to the projector.
Also, why not use an AJA HDP2 and eliminate the HDMI-DVI adapter? The fewer converters/adapters the better.
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Coax to the projector, then a 3′ HDMI to DVI cable.
The HDP2 has a scaler in it. I didn’t want to add additional delay to the image (since it is for IMAG) that scaler processing usually introduces.
The cable is just a passive cable. HDMI and DVI are supposed to be electrically identical. This is the first instance I’ve seen where it doesn’t work.
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IMAG – gotcha. You should post in this forum that is for live and stage events. Those guys should be more help.
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Sorry! (didn’t preview that post first)…THIS FORUM: https://forums.creativecow.net/livestageevents
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My first post on here. I’ll try and move this over to the live IMAG section.
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Oh I’m not fussing. 🙂 Welcome to the Cow!
Have you thought of using an SDI-to-Y’Pb’Pr converter and using the projectors’ component inputs? That’s probably be the least-delayed conversion.
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this is the correct answer (Tim Ward posted it). Stop it with the HDMI to DVI converter cable. That’s your problem. Get the AJA or Blackmagic SDI to YPbPr converter – your projector has analog YPbPr inputs – your problem will be gone instantly.
AND Panasonic has a DVI output option board as well.
Bob Zelin
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indeed
go analog on the end.
a dac box always give you a signal.
no fuzz with the nightmare called EDID&HDCP
its SD anyway so the projector must scale.grt
MauricePeople saying they don’t make mistake’s often make nothing at all!
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