I prefer HD15 over SCART
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I prefer HD15 over SCART
I seem to prefer the HD15 connection between my HAS supergun and OSSC. SCART looks a little sharper but with HD15 the colors are more rich and pleasing and lag seems very slightly lower. Anyone else?
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Re: I prefer HD15 over SCART
edit: oops, read topic title as DB15 somehow. Editing post to avoid generating confusion.
Last edited by fernan1234 on Sun Nov 10, 2019 7:28 pm, edited 1 time in total.
Re: I prefer HD15 over SCART
The other day I arced out my HAS 5v PSU by plugging in the supplied Saturn controller adapter wonky.
The steel edge can be a conductor between power pins and ground and fry stuff thats why its design was ditched.
HDMI or USB 3.0 is a better option. But then you get confused which ones for analog video or data ect
The steel edge can be a conductor between power pins and ground and fry stuff thats why its design was ditched.
HDMI or USB 3.0 is a better option. But then you get confused which ones for analog video or data ect
Re: I prefer HD15 over SCART
Judging by the title I first thought you meant the physical connector types, hah.
Hypothetically speaking, if everything that is SCART now would become HD15 overnight, then I'd prefer HD15 instantly. SCART just feels so flimsy and a plugged in connector is easily crooked. Though I'm not going to gloss over the advantage that the plug has some extra space for components.
Hypothetically speaking, if everything that is SCART now would become HD15 overnight, then I'd prefer HD15 instantly. SCART just feels so flimsy and a plugged in connector is easily crooked. Though I'm not going to gloss over the advantage that the plug has some extra space for components.
Re: I prefer HD15 over SCART
HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
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Re: I prefer HD15 over SCART
While I agree, I don't think there are really that many people building their own cables, so this problem has a fairly small scope; and I don't think some mild difficulty with assembly would outweigh any of the advantages or usability of DE-15 over SCART.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
Re: I prefer HD15 over SCART
They make crimp style HD-15 connectors. Just crimp the pins to the wire and insert into the shell.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
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buttersoft
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Re: I prefer HD15 over SCART
I know they exist but I can never find the damn things!NJRoadfan wrote:They make crimp style HD-15 connectors. Just crimp the pins to the wire and insert into the shell.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
Re: I prefer HD15 over SCART
I prefer BNC over SCART and RCA.
Seriously SCART and RCA connectors gets worn out very easily when you hook/unhook them, I haven't used HD15 for anything other than older PC monitors way back and hardly ever hooked/unhooked, so I dunno how sturdy it is of a connection.
Seriously SCART and RCA connectors gets worn out very easily when you hook/unhook them, I haven't used HD15 for anything other than older PC monitors way back and hardly ever hooked/unhooked, so I dunno how sturdy it is of a connection.
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citrus3000psi
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Re: I prefer HD15 over SCART
I created a little board to help with that.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
https://twitter.com/citrus3000psi/statu ... 4634959873
https://oshpark.com/shared_projects/wBtrk34t
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buttersoft
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Re: I prefer HD15 over SCART
citrus3000psi wrote:I created a little board to help with that.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
https://twitter.com/citrus3000psi/statu ... 4634959873
https://oshpark.com/shared_projects/wBtrk34t
Errr, doesn't that PCB design wire pin 9 (VGA +5V) directly into all the ground pins? Or am i looking at it wrong...
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maxtherabbit
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Re: I prefer HD15 over SCART
Looks like it, that's bad mmkaybuttersoft wrote:citrus3000psi wrote:I created a little board to help with that.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
https://twitter.com/citrus3000psi/statu ... 4634959873
https://oshpark.com/shared_projects/wBtrk34t
Errr, doesn't that PCB design wire pin 9 (VGA +5V) directly into all the ground pins? Or am i looking at it wrong...
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citrus3000psi
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Re: I prefer HD15 over SCART
buttersoft wrote:citrus3000psi wrote:I created a little board to help with that.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
https://twitter.com/citrus3000psi/statu ... 4634959873
https://oshpark.com/shared_projects/wBtrk34t
Errr, doesn't that PCB design wire pin 9 (VGA +5V) directly into all the ground pins? Or am i looking at it wrong...
Thanks for notifying me, I pulled the design down. I did a quick google search on VGA pinout and some diagrams had pin 9 grounded. Must have been my issue or I just really made a dumb mistake.
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maxtherabbit
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Re: I prefer HD15 over SCART
Some really old VGA cards did in fact tie pin 9 to ground. I'm guessing the diagrams you found were from people just buzzing out those cards.citrus3000psi wrote:
Thanks for notifying me, I pulled the design down. I did a quick google search on VGA pinout and some diagrams had pin 9 grounded. Must have been my issue or I just really made a dumb mistake.
It's really dumb and bad and screwed up the first revision of my inline LPF design. I didn't even realise it was a thing until I sold a prototype for beta testing. Regardless I appreciate you fixing it
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mikejmoffitt
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Re: I prefer HD15 over SCART
Tying pin 9 to ground as the source (PCB, console, computer, etc) is fine, since the source provides the +5V voltage. Neither sink (monitor, consumptive device) nor cable should tie pin 9 to ground, as it would normally consume or ignore the +5V.
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maxtherabbit
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Re: I prefer HD15 over SCART
it's not fine if you're trying to make in inline device that ties its power rail to the +5 pin and has an option for external powermikejmoffitt wrote:Tying pin 9 to ground as the source (PCB, console, computer, etc) is fine, since the source provides the +5V voltage. Neither sink (monitor, consumptive device) nor cable should tie pin 9 to ground, as it would normally consume or ignore the +5V.
I get what you're saying, most of the time it would never cause an issue, but it's still bad practice to ground it at the source. Just leave it floating if you don't intend to provide power on the pin, there's literally no reason not to
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Re: I prefer HD15 over SCART
nmalinoski wrote:While I agree, I don't think there are really that many people building their own cables, so this problem has a fairly small scope; and I don't think some mild difficulty with assembly would outweigh any of the advantages or usability of DE-15 over SCART.Bratwurst wrote:HD15 is not fun to solder to. Scart has nice big spaced out connections and is cool and good.
You can make some pretty great cables with old OEM vga cables from Dell/Sony/etc. They are usually very high grade and shielded.
A camel is a horse designed by a committee
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Re: I prefer HD15 over SCART
I bet this is what I'm preferring about the HD15 connection vs SCART:
So *possibly* the LPF chip is responsible for creating a sharper image but sucks some life out of the colors and adds a small amount of lag.AV3 is best suited for high-quality input sources as video LPF functionality is limited (the AV1 and AV2 inputs are routed through a dedicated LPF chip).
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maxtherabbit
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Re: I prefer HD15 over SCART
noshmupsrocks wrote:I bet this is what I'm preferring about the HD15 connection vs SCART:
So *possibly* the LPF chip is responsible for creating a sharper image but sucks some life out of the colors and adds a small amount of lag.AV3 is best suited for high-quality input sources as video LPF functionality is limited (the AV1 and AV2 inputs are routed through a dedicated LPF chip).
1) LPFs do not sharpen the image, they do the opposite of that
2) it's a THS7353, it does not have any deleterious effect on color reproduction
3) it absolutely does not add lag
bypassing the THS7353 by using AV3 allows for a slightly higher video bandwidth to maintain sharpness when digitizing input resolutions greater than 1080p, that's it
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buttersoft
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Re: I prefer HD15 over SCART
Is it? Won't the power draw just spike on the short circuit? Like if you bridge USB +5V to ground, or one of the data lines, your mobo will just go into overcurrent protection and shut down. Is the VGA +5V rail separate? I would imagine a VGA port was less protected, being legacy, so you might actually blow something up.mikejmoffitt wrote:Tying pin 9 to ground as the source (PCB, console, computer, etc) is fine, since the source provides the +5V voltage. Neither sink (monitor, consumptive device) nor cable should tie pin 9 to ground, as it would normally consume or ignore the +5V.
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maxtherabbit
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Re: I prefer HD15 over SCART
what he is saying is that if the source device doesn't ever put +5 on the pin to begin with there won't be any current to sink to groundbuttersoft wrote:Is it? Won't the power draw just spike on the short circuit? Like if you bridge USB +5V to ground, or one of the data lines, your mobo will just go into overcurrent protection and shut down. Is the VGA +5V rail separate? I would imagine a VGA port was less protected, being legacy, so you might actually blow something up.mikejmoffitt wrote:Tying pin 9 to ground as the source (PCB, console, computer, etc) is fine, since the source provides the +5V voltage. Neither sink (monitor, consumptive device) nor cable should tie pin 9 to ground, as it would normally consume or ignore the +5V.
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mikejmoffitt
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Re: I prefer HD15 over SCART
Honestly, I think an in-line device isn't really doing the job of a sink any more, unless its output is actually isolated from the input (including pin 9), so I wouldn't tie it there anyway. I agree nothing should be tying it and should let it float, in any case.
In my experience, the VGA cable ends up getting quite warm when a monitor erroneously has 5V tied to ground. There is likely a current-limiting resistor in the source.
In my experience, the VGA cable ends up getting quite warm when a monitor erroneously has 5V tied to ground. There is likely a current-limiting resistor in the source.
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buttersoft
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Re: I prefer HD15 over SCART
You know i've never found a monitor that did that. Never even heard that pin 9 might be ground. It used to be part of the Key pin setup, didn't it, before it was 5V? I have noticed that a lot of HD15 extension cables leave out pin9 from the male end entirely. That way you can't get into trouble, i guess. I use it for blanking and power sometimes, so i'd want it added to any breakout.mikejmoffitt wrote:In my experience, the VGA cable ends up getting quite warm when a monitor erroneously has 5V tied to ground. There is likely a current-limiting resistor in the source.
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maxtherabbit
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Re: I prefer HD15 over SCART
I ended up adding a DIP switch to isolate the device power rail from pin 9 in/out if external power is being usedmikejmoffitt wrote:Honestly, I think an in-line device isn't really doing the job of a sink any more, unless its output is actually isolated from the input (including pin 9), so I wouldn't tie it there anyway. I agree nothing should be tying it and should let it float, in any case.
In my experience, the VGA cable ends up getting quite warm when a monitor erroneously has 5V tied to ground. There is likely a current-limiting resistor in the source.
I still want to help raise awareness to prevent devices grounding pin 9 at any point, because its just silly and unhelpful
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mikejmoffitt
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Re: I prefer HD15 over SCART
My writing was unclear - in this case, it was a harness someone else had crimped by hand, going from HD15 to the 6-pin JST connector used for RGB on most Nanao monitors.buttersoft wrote:You know i've never found a monitor that did that. Never even heard that pin 9 might be ground. It used to be part of the Key pin setup, didn't it, before it was 5V? I have noticed that a lot of HD15 extension cables leave out pin9 from the male end entirely. That way you can't get into trouble, i guess. I use it for blanking and power sometimes, so i'd want it added to any breakout.mikejmoffitt wrote:In my experience, the VGA cable ends up getting quite warm when a monitor erroneously has 5V tied to ground. There is likely a current-limiting resistor in the source.
Re: I prefer HD15 over SCART
I prefer almost anything over scart....
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OSD/External RGB Mux Diagram
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