[SBE] multiviewer monitors

[David Baker]

Jonathan,
 
Ross says the resolution of the MV output follows the switcher resolution settings, so 720 x 480 for SD, etc.  There is no way to change it to something else.  So, in effect I guess, each source will be lower resolution on the MV display.
 
They say that they use more pixels beyond the "safe" area for the MV than the PV output uses so they can get more room for all the sources, so there is actually the same cropping going on with the PV output though I'm not seeing it.  
Their solution is to get a monitor with undershoot/overshoot settings or a way to display every pixel.  Some consumer models work well as in your experience and others don't, but generally the higher end monitors perform better at this.
You have to ask for it as a spec when you shop for the monitor.
 
I almost don't want to buy anything unless I see what our signal will look like through the monitor beforehand, if at all possible, with many brands performing differently.
Thanks again.
 



>>> Jonathan Solomon <jonstv at gmail.com> 11/26/2012 7:56 PM >>>

Dave-

If the PV out is OK (with an SD source) and the MV out is not, I think that MV might be HD.  This actually makes some sense as even with SD content, and HD MV would provide a much higher resolution for each source.

Have you checked with Ross to verify the MV output works with all SD content?  Something seems fishy here, but it clearly points to the MV output.  It seems that the MV processor is outputting 1080, but the output is 480.

Perhaps you could try setting the output the feeds the MV to 1080?

I don't think the type of monitor matters.  We're using a consumer monitor without significant problems, other than the "eco" options causing the brightness to adjust.

Sent from my iPad

On Nov 26, 2012, at 6:16 PM, "David Baker" <DBaker at addison-il.org> wrote:



Jonathan,
I am in 4:3 mode without any zooming, and a splash screen says 720 x 480 when the HDMI signal is input.
It's interesting that outputting a PV signal from that same port on the switcher (this output can either be set to PV or multiview in the switcher menu) shows no cropping of anything punched up on the preview bus.
Samsung insists that unless I use a "broadcast" LCD, this cropping will occur unless I can change the switcher output resolution to something that won't invoke the internal scaler on the monitor, like 1920 x 1080 native.  Not sure why then PV out is fine??  FYI.. I'm using 4:3 for now to avoid lip sync delays in my legacy sources until I can get a fix in place.  Converting aspect ratios in the switcher and A/D conversion causes enough delay to make the video hard to watch.  When testing the switcher in 16:9, cropping still occurred but less pronounced.
Thanks again.
Dave


>>> Jonathan Solomon <jon at thesolomonhouse.com> 11/26/2012 10:48 AM >>>

Dave-

Looks like the Ross HDMI converter is pretty passive. I looked at the manual for the monitor and it doesn't clearly mention that it support 720x480. I agree it SHOULD, but it is not clear that it does. It certainly sounds like a "zoom" feature is enabled. We are using Samsung UN46ES6500FXZA here but in 1920x1080 (with Bright Eye 72s FWIW). 

Just to rule out the converter, have you tried DVI mode to a desktop display?


On Mon, Nov 26, 2012 at 10:54 AM, Jeremy Morris <jdmickies at gmail.com> wrote:


Try the Blackmagic SDI to HDMI converters. Dirt cheap and work great. 

Jeremy

Sent from my Verizon information-addiction enabling iPhone. 

On Nov 26, 2012, at 10:37 AM, "David Baker" <DBaker at addison-il.org> wrote:



Hi Jonathan,
Still working on this with Samsung. I'm using their MD40B which is supposed to be a "business" grade monitor. Zooming and positioning, along with setting specific aspect ratios cut off significant parts of the raster.
Checked the SDI from the switcher into an SDI monitor, bypassing the HDMI converter, and no problems there. Switcher output is 720 x 486 and monitor says it's reading 720 x 480 when HDMI is plugged into it.
The SDI to HDMI converter is a Ross SHC-9642.
Also used the DVI input with a HDMI to DVI adapter and no change, and I cannot set the resolution there. I can only set resolution with VGA input, and that's not an option for us.
Thanks for the help.
Dave


>>> Jonathan Solomon <jon at thesolomonhouse.com> 11/25/2012 8:29 PM >>>

David- 
Did you find answer to this? Most consumer displays have options to a) set the input standard / resolution and b) "zoom" the picture. Can you specify which converter and TV you are using? Also, have you tried a different SDI source (such as a camera) to verify it is not the switcher output?

Jonathan


On Thu, Nov 15, 2012 at 2:01 PM, David Baker <DBaker at addison-il.org> wrote:


Hi all,
Has anyone had difficulty setting up a flat panel monitor to display a multiviewer or any other SDI output correctly, specifically the image being cut off on the edges in 16:9 or 4:3 mode?
I'm outputting a 720 x 486 multiview SDI signal from a Ross Crossover 16 switcher into a Ross SDI to HDMI converter to feed a Samsung display, and much of the image on the sides and bottom is missing.
No amount of scaling or H/V adjustments fix the problem.
Ross maintains that their converters don't do any extra processing of the SDI signal coming in, and suggest the display should be pixel 1:1 or have a "fit" mode to display properly.
Can anyone suggest a display they have had success with, or give any other ideas as to why this cropping is happening?
This monitor also has a TV tuner, and I have heard that sometimes these combination displays cut off parts of the raster to hide the ancillary space in the incoming TV signal.
Thanks for any help.
Thank you,

David Baker, CBTE, CBNT
Media Production Coordinator
Community Relations Dept.
Village of Addison, IL
ofc: 630-693-7554 ( tel:630-693-7554 )
cell: 708-935-7829 ( tel:708-935-7829 )
fax: 630-543-5411 ( tel:630-543-5411 )
www.addisonadvantage.org

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