shmups.system11.org

Shmups Forum
 
* FAQ    * Search
 * Register  * Login 
It is currently Mon Feb 06, 2023 3:11 am View unanswered posts
View active topics



Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Extron VSC 500 Defective? Raised Black Levels SOLVED
PostPosted: Wed Nov 30, 2022 5:52 am 



Joined: 29 Jun 2020
Posts: 3
Hi all, recently bought a VSC 500 to output my PC to a JVC D-Series and I'm wondering whether this unit is functioning correctly. The problem is blacks are a greyish green. At first I thought it might be my Displayport to VGA converter, but then I tried with no signal going into the VSC 500.

-With the VSC 500 set to output a black screen on no signal, blacks are grey.
-When a signal is passed to it, blacks are grey.
-However, with the VSC 500 set to output a Color Bar screen on no signal, the right-most black bar is actually black.

Last picture shows a PS2 outputting black, so I know it's not the JVC. Is this just a bad unit or am I missing something?

Image

Image

Image


Last edited by HesterDW on Wed Nov 30, 2022 4:38 pm, edited 1 time in total.

Top
 Offline Profile  
 
 Post subject: Re: Extron VSC 500 Defective? Raised Black Levels
PostPosted: Wed Nov 30, 2022 11:04 am 


User avatar

Joined: 06 Mar 2006
Posts: 12958
Location: Germany
try the NTSC pedestal setting in the menu.


Top
 Offline Profile  
 
 Post subject: Re: Extron VSC 500 Defective? Raised Black Levels
PostPosted: Wed Nov 30, 2022 4:37 pm 



Joined: 29 Jun 2020
Posts: 3
That was it! I would have never thought to try that setting. Even after reading the user guide I have no clue what it does lol. Thanks so much.


Top
 Offline Profile  
 
 Post subject: Re: Extron VSC 500 Defective? Raised Black Levels SOLVED
PostPosted: Wed Nov 30, 2022 4:53 pm 



Joined: 11 Nov 2013
Posts: 378
What value did you end up setting it to?


Top
 Offline Profile  
 
 Post subject: Re: Extron VSC 500 Defective? Raised Black Levels SOLVED
PostPosted: Wed Nov 30, 2022 9:12 pm 


User avatar

Joined: 06 Mar 2006
Posts: 12958
Location: Germany
Quote:
I would have never thought to try that setting. Even after reading the user guide I have no clue what it does lol. Thanks so much.

it removes the DC offset which might be present on video signals. That usually depends on the original region of your equipment (like NTSC in Japan vs. NTSC in the US). This was a nuissance at best with analogue equipment, but becomes a nightmare when dealing with it on digital conversions, where it's easily confound with a range mismatch (black level in RGB vs. YCbCr).

There isn't much you need to understand about it. Just set it in a way so you get proper blacks without adding black crush.


Top
 Offline Profile  
 
 Post subject: Re: Extron VSC 500 Defective? Raised Black Levels SOLVED
PostPosted: Thu Dec 01, 2022 1:08 am 



Joined: 29 Jun 2020
Posts: 3
SavagePencil wrote:
What value did you end up setting it to?


The only values are ON or OFF. It was on by default, as stated in the manual. I turned it off and that solved it!

Fudoh wrote:
Quote:
I would have never thought to try that setting. Even after reading the user guide I have no clue what it does lol. Thanks so much.

it removes the DC offset which might be present on video signals. That usually depends on the original region of your equipment (like NTSC in Japan vs. NTSC in the US). This was a nuissance at best with analogue equipment, but becomes a nightmare when dealing with it on digital conversions, where it's easily confound with a range mismatch (black level in RGB vs. YCbCr).

There isn't much you need to understand about it. Just set it in a way so you get proper blacks without adding black crush.


Ok I somewhat understand. The manual mentioned blanking level but that went over my head. Analog video truly is a different world. Figuring out how to get a signal from modern tech that these CRTs can understand has been a journey.


Top
 Offline Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC


Who is online

Users browsing this forum: bobrocks95 and 13 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group