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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 5:46 am 



Joined: 14 Mar 2014
Posts: 78
On one of my gscart lite switches, the green light was rapidly flashing. I reseated the power cord and it's a solid green light now, though I noticed it's easy to reproduce the flashing. What's the significance of the flashing?


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 6:56 am 


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FriendofSonic wrote:
On one of my gscart lite switches, the green light was rapidly flashing. I reseated the power cord and it's a solid green light now, though I noticed it's easy to reproduce the flashing. What's the significance of the flashing?


Under normal conditions, green flashing indicates that a signal was just locked and is soon followed by solid green. So if it's rapidly flashing that would indicate that either it's constantly locking, or constantly losing enough power to function (and possibly locking during each cycle, but that's moot)
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 7:24 am 



Joined: 14 Mar 2014
Posts: 78
Thanks Dirk-- I'll need to keep an eye on this then. It must be power related since I didn't have any consoles turned on at the time. Maybe the power cord was just slightly detached.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 12:26 pm 


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TheLordGuardian wrote:
Hello, I tried to post before but it did not seem to work.

I tried to preorder a gscartsw but on the paypal site the price is listed as 9999 USD (with shipping to Luxemburg)
Is there something I can do to place apreorder with the correct price? Thanks!

with best regards,
JC

You're the first one ordering from Luxembourg. Try now, I enabled it.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 12:29 pm 


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FriendofSonic wrote:
Thanks Dirk-- I'll need to keep an eye on this then. It must be power related since I didn't have any consoles turned on at the time. Maybe the power cord was just slightly detached.

As Dirk pointed out, rapid flashing indicates that the sync signal was successfully detected on one of the outputs. Also it blinks the same way once when you turn the switch on, this is indication that Altera IC started. Most likely it was the power issue.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Tue Sep 11, 2018 4:18 pm 



Joined: 07 Sep 2018
Posts: 2
superg wrote:
TheLordGuardian wrote:
Hello, I tried to post before but it did not seem to work.

I tried to preorder a gscartsw but on the paypal site the price is listed as 9999 USD (with shipping to Luxemburg)
Is there something I can do to place apreorder with the correct price? Thanks!

with best regards,
JC

You're the first one ordering from Luxembourg. Try now, I enabled it.


Thanks it worked fine now :)


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Wed Sep 12, 2018 4:13 am 



Joined: 29 Jul 2018
Posts: 2
So, I pre ordered a little bit ago. But is there a way to tell which batch I am in? I got no idea if I ordered fast enough to be in the first, or if I'm going to be in the second.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Thu Sep 13, 2018 9:06 pm 


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MattieBoy wrote:
So, I pre ordered a little bit ago. But is there a way to tell which batch I am in? I got no idea if I ordered fast enough to be in the first, or if I'm going to be in the second.

Sorry I can't answer that right now because if I do I'm gonna get another 100 PM's asking the same. When I open pre-orders there usually is a peak the first hour so there are many orders.
I will communicate everything when the time will come, most likely private directly to paypal email.

Right now my manufacturer is assembling the first units, I hope I will get some news this week.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 4:04 am 


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Hi superg,

I've been rocking your GSCARTSW for a while now and either direct or through an extron crosspoint it's worked wonderfully on 3 models of PVMs.

When running 15KHz consoles through the GSCARTSW the image is pushed slightly to the left. I was hoping to counteract this with an extron rxi 203 (which requires clean sync), but running the GSCARTSW DSUB out to it just results in a green, rolling image with "no sync" displayed on the 203.

This could very well be an extron issue, but my dreamcast via 31KHz runs through the 203 without issue. All 15Khz consoles that run through the GSCARTSW don't lock up with the Extron 203.

Can you speak to this? Is this a known issue? What could be causing it? I don't really want to change HPOS within my PVMs to match the GSCARTSW output because my newer consoles run to them direct and don't exhibit the same push to the left.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 5:15 am 


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HDgaming42 wrote:
Hi superg,

I've been rocking your GSCARTSW for a while now and either direct or through an extron crosspoint it's worked wonderfully on 3 models of PVMs.

When running 15KHz consoles through the GSCARTSW the image is pushed slightly to the left. I was hoping to counteract this with an extron rxi 203 (which requires clean sync), but running the GSCARTSW DSUB out to it just results in a green, rolling image with "no sync" displayed on the 203.

This could very well be an extron issue, but my dreamcast via 31KHz runs through the 203 without issue. All 15Khz consoles that run through the GSCARTSW don't lock up with the Extron 203.

Can you speak to this? Is this a known issue? What could be causing it? I don't really want to change HPOS within my PVMs to match the GSCARTSW output because my newer consoles run to them direct and don't exhibit the same push to the left.


I've been told this is because extron gear expects TTL sync. I've since recabled and am using the DSUB out. The extron locks on 15KHz, but the PVM either displays black, or columns of scrambled color.*

Any ideas?

*the PVMs happily take 15KHz console-->GSCART-->extron crosspoint-->PVM, yet introducing an extron 203 between the crosspoint and the PVMs exhibits the behaviour described above...


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 12:09 pm 


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Joined: 06 Jul 2014
Posts: 874
Location: US, MI
HDgaming42 wrote:
HDgaming42 wrote:
Hi superg,

I've been rocking your GSCARTSW for a while now and either direct or through an extron crosspoint it's worked wonderfully on 3 models of PVMs.

When running 15KHz consoles through the GSCARTSW the image is pushed slightly to the left. I was hoping to counteract this with an extron rxi 203 (which requires clean sync), but running the GSCARTSW DSUB out to it just results in a green, rolling image with "no sync" displayed on the 203.

This could very well be an extron issue, but my dreamcast via 31KHz runs through the 203 without issue. All 15Khz consoles that run through the GSCARTSW don't lock up with the Extron 203.

Can you speak to this? Is this a known issue? What could be causing it? I don't really want to change HPOS within my PVMs to match the GSCARTSW output because my newer consoles run to them direct and don't exhibit the same push to the left.


I've been told this is because extron gear expects TTL sync. I've since recabled and am using the DSUB out. The extron locks on 15KHz, but the PVM either displays black, or columns of scrambled color.*

Any ideas?

*the PVMs happily take 15KHz console-->GSCART-->extron crosspoint-->PVM, yet introducing an extron 203 between the crosspoint and the PVMs exhibits the behaviour described above...

How bad is the shift? gscartsw v3.4 has just EL1883 (LM1881) for cleaning the sync but that adds just a few pixels shifting the image to the right. Sync cleaner is always active on VGA connector and it's TTL. Why do you think it's the gscartsw issue? Also why do you use extron crosspoint, is it really needed in your setup? I'm not familiar with extron, maybe somebody can clarify what is going on.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 2:08 pm 



Joined: 08 Apr 2018
Posts: 13
HDgaming42 wrote:
HDgaming42 wrote:
Hi superg,

I've been rocking your GSCARTSW for a while now and either direct or through an extron crosspoint it's worked wonderfully on 3 models of PVMs.

When running 15KHz consoles through the GSCARTSW the image is pushed slightly to the left. I was hoping to counteract this with an extron rxi 203 (which requires clean sync), but running the GSCARTSW DSUB out to it just results in a green, rolling image with "no sync" displayed on the 203.

This could very well be an extron issue, but my dreamcast via 31KHz runs through the 203 without issue. All 15Khz consoles that run through the GSCARTSW don't lock up with the Extron 203.

Can you speak to this? Is this a known issue? What could be causing it? I don't really want to change HPOS within my PVMs to match the GSCARTSW output because my newer consoles run to them direct and don't exhibit the same push to the left.


I've been told this is because extron gear expects TTL sync. I've since recabled and am using the DSUB out. The extron locks on 15KHz, but the PVM either displays black, or columns of scrambled color.*

Any ideas?

*the PVMs happily take 15KHz console-->GSCART-->extron crosspoint-->PVM, yet introducing an extron 203 between the crosspoint and the PVMs exhibits the behaviour described above...


I can attest to having noticed this too and that the shift is quite significant. When running the 240p test suite I believe it cut 6-10 pixels on the left side of the screen. I also had many issues using my Extron 203 rxi in my gscartsw 3.4 setup in general and believed for the longest time it was broken. I even contacted Bob/RetroRGB and Matt from Videogamperfection about it since I knew they used Extrons - Also read up on the internal jumper setup for the Extron - and everything seem to be fine. After all my testing, I realized I had failed to do the most obvious test - to try it without the gscartsw. After running my Dreamcast directly into the Extron 203 it worked just fine. So it must've had something to do with having the gscartsw in the chain. The VGA cable between the gscartsw and Extron work just fine when paired with just the Extron and Dreamcast TORO box.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 2:35 pm 


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ViraLicious wrote:
I can attest to having noticed this too and that the shift is quite significant. When running the 240p test suite I believe it cut 6-10 pixels on the left side of the screen. I also had many issues using my Extron 203 rxi in my gscartsw 3.4 setup in general and believed for the longest time it was broken. I even contacted Bob/RetroRGB and Matt from Videogamperfection about it since I knew they used Extrons - Also read up on the internal jumper setup for the Extron - and everything seem to be fine. After all my testing, I realized I had failed to do the most obvious test - to try it without the gscartsw. After running my Dreamcast directly into the Extron 203 it worked just fine. So it must've had something to do with having the gscartsw in the chain. The VGA cable between the gscartsw and Extron work just fine when paired with just the Extron and Dreamcast TORO box.

There is nothing in gscartsw v3.4 except sync stripper circuit which can affect this behavior. Did you try to exclude extron from your setup? :)
Try it without extron and you will probably see just a tiny shift introduced by the sync stripper circuit. My speculation is that extron is actually making the shift at least twice as bad as it is after the sync stripper. I think it would be the same when using other sync separation devices like Micomsoft XSYNC-1 or even SCART cables with integrated sync cleaner, they're all built using the similar LM1881 IC's.
What you see is likely the effect of having RGBS->RGBHV conversion which is made worse by Extron.
As of your Dreamcast - it provides native separate HV sync, of course it would be fine as there is no conversion.
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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 4:02 pm 



Joined: 08 Apr 2018
Posts: 13
superg wrote:
ViraLicious wrote:
I can attest to having noticed this too and that the shift is quite significant. When running the 240p test suite I believe it cut 6-10 pixels on the left side of the screen. I also had many issues using my Extron 203 rxi in my gscartsw 3.4 setup in general and believed for the longest time it was broken. I even contacted Bob/RetroRGB and Matt from Videogamperfection about it since I knew they used Extrons - Also read up on the internal jumper setup for the Extron - and everything seem to be fine. After all my testing, I realized I had failed to do the most obvious test - to try it without the gscartsw. After running my Dreamcast directly into the Extron 203 it worked just fine. So it must've had something to do with having the gscartsw in the chain. The VGA cable between the gscartsw and Extron work just fine when paired with just the Extron and Dreamcast TORO box.

There is nothing in gscartsw v3.4 except sync stripper circuit which can affect this behavior. Did you try to exclude extron from your setup? :)
Try it without extron and you will probably see just a tiny shift introduced by the sync stripper circuit. My speculation is that extron is actually making the shift at least twice as bad as it is after the sync stripper. I think it would be the same when using other sync separation devices like Micomsoft XSYNC-1 or even SCART cables with integrated sync cleaner, they're all built using the similar LM1881 IC's.
What you see is likely the effect of having RGBS->RGBHV conversion which is made worse by Extron.
As of your Dreamcast - it provides native separate HV sync, of course it would be fine as there is no conversion.


Sorry, I didn't mean to make it sound as if there was something wrong with the gscartsw in itself. Apologies if it sounded like that. I love it and it is an integral part of my setup and I don't use the Extron anymore, I only use the gscartsw directly into my Framemeister and soon into my new OSSC. :)

You are right in your assumption. The Extron is making it worse - in particular when you have DDSP active and you can't manually adjust the image. Then it shifts the image a lot. However, when you can it disabled and can manually adjust the image, you then can fix the shift of the image. But, it introduces other issues then, such like a lot of noise in certain colors. This is most likely due to the Framemeister and its bad color convergence though.


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 4:47 pm 


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Posts: 138
Location: Canada
superg wrote:
ViraLicious wrote:
I can attest to having noticed this too and that the shift is quite significant. When running the 240p test suite I believe it cut 6-10 pixels on the left side of the screen. I also had many issues using my Extron 203 rxi in my gscartsw 3.4 setup in general and believed for the longest time it was broken. I even contacted Bob/RetroRGB and Matt from Videogamperfection about it since I knew they used Extrons - Also read up on the internal jumper setup for the Extron - and everything seem to be fine. After all my testing, I realized I had failed to do the most obvious test - to try it without the gscartsw. After running my Dreamcast directly into the Extron 203 it worked just fine. So it must've had something to do with having the gscartsw in the chain. The VGA cable between the gscartsw and Extron work just fine when paired with just the Extron and Dreamcast TORO box.

There is nothing in gscartsw v3.4 except sync stripper circuit which can affect this behavior. Did you try to exclude extron from your setup? :)
Try it without extron and you will probably see just a tiny shift introduced by the sync stripper circuit. My speculation is that extron is actually making the shift at least twice as bad as it is after the sync stripper. I think it would be the same when using other sync separation devices like Micomsoft XSYNC-1 or even SCART cables with integrated sync cleaner, they're all built using the similar LM1881 IC's.
What you see is likely the effect of having RGBS->RGBHV conversion which is made worse by Extron.
As of your Dreamcast - it provides native separate HV sync, of course it would be fine as there is no conversion.


I suspect a number of my cables have sync strippers in them and that is compounding the issue. Not all of course, or I'd simply not use the stripper in the GSCARTSW.

I resolved my issue by going:

15KHz console-->GSCARTSW DSUB-->extron crosspoint-->extron 203-->extron crosspoint AGAIN-->PVM


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 Post subject: Re: gscartsw / gscartsw_lite / gcompsw switches support thre
PostPosted: Sun Sep 16, 2018 8:33 pm 


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HDgaming42 wrote:
I suspect a number of my cables have sync strippers in them and that is compounding the issue. Not all of course, or I'd simply not use the stripper in the GSCARTSW.
I resolved my issue by going:
15KHz console-->GSCARTSW DSUB-->extron crosspoint-->extron 203-->extron crosspoint AGAIN-->PVM

Now that I thought a bit about it, was the frame shifted or cropped? If it's shifted it can be compensated by using underscan option on BVM/PVM but if already cropped after extron it means that nothing can be done.
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