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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Fri Oct 31, 2014 2:48 pm Post subject: |
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1080P 60hz on an old 180DMB 8" tube. This is with a lightly modded stock VNB (some filtering but stock op amp). and the new VDC card showing green only. I don't know about bandwidth but the new cards look blurry to me and that's what people notice the most.
Last edited by draganm on Sat Dec 06, 2014 8:46 pm; edited 1 time in total
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Fri Oct 31, 2014 2:57 pm Post subject: |
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| Nashou66 wrote: | He told me that the neck boards I have are for the regular 8/9 inch marquee tubes and that jumper should not be on pin A. That the wire is for a G2 at pin 2. But if the Jumper is there as on mine it is for G2 at pin 6 with no wire attached. But if you look at the pin outs for the LCP and the 8 Inch (DBV?) there is no connection at pin 6 so if the G2 goes there as well it wont harm anything I would assume.
I did a continuity test , I posted it somewhere here, but i found continuity from the end of the wire to the G2 connection on the VNB and also the resistance from the G2 connector on the VNB to pin 6 has the correct resistance of the G2 resistors as does the end of the black G2 wire.
Scott has no idea why it is like that, he never answered if it harm either tube.
Athanasios |
BTW, that schematic that was posted earlier did not work. moving the jumper to location B and adding the G2 wire at location WH2 resulted in no continuity to WH2 ( G2 circuit). To run these on factory tubes with G2 at pin 2 I had to set it up exactly how Nash's card is.
CHECK your continuity before running these.
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stridsvognen
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| Posted: Fri Oct 31, 2014 3:06 pm Post subject: |
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| draganm wrote: | | 1080P 60hz on an old 180DMB 8" tube. This is with a lightly modded stock VNB (some filtering but stock op amp). and the new VDC card showing green only. I don't know about bandwidth but the new cards look blurry to me and that's what people notice the most. |
You need to turn off all scaling to evaluate bandwidth performance, those pics you posted wont do any good.
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Melifluonze
Joined: 25 Nov 2013
Posts: 262
Location: Upstate NY
TV/Projector: 9500LC Ultra
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| Posted: Tue Nov 04, 2014 2:22 pm Post subject: |
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Guys, not to be a pain, but I've read my way through this thread and I'm still not very clear on how these new neck boards need to be set up for LUG vs. LCP. My boards are the same as those pictured by Nash.
Mine currently has LUG's installed from the factory. I have not pulled the neck boards off the tubes yet to check the jumper setting, but I do see the black wire that connects to BOTH open pins on the tube itself. There are two connections on the tube end of the black wire, one that slides over each pin.
How about...
To configure for LCP the following has to be done:
- Use the black wire???
- Change the jumper to what???
- Anything else that needs to be done???
To configure for LUG the following has to be done:
- Use the black wire???
- Change the jumper to what???
- Anything else that needs to be done???
To be honest, at this point, it sounds like you can put either tube into the projector and hook it up with no problem, and no jumper change... I'm feeling that this is probably NOT true!
Also, I'm not sure I want to use my LUGs yet. They're brand new and they don't have the colored C elements. Rather than swap the elements out, I'm thinking I'll install the LCP tubes I have with the elements already installed into my stack. That being said, can I use the older neck boards with the new VIM? I'm reading that I can, if I use the same VNB for all tubes in the projector. I'm thinking that I'll store the LUG tubes with the neck boards left on them, and just move the whole LCP assemblies into the 2008 vintage projectors...
Just want to confirm because a tube is a terrible thing to waste...
- M
_________________
Dual Marquee 9500LC Ultras, Dual JVC RS600
Focal Aria 5 custom speakers, HT Tuba
We STILL don't need no stinkin' 7.1!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Melifluonze
Joined: 25 Nov 2013
Posts: 262
Location: Upstate NY
TV/Projector: 9500LC Ultra
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| Posted: Tue Nov 04, 2014 2:33 pm Post subject: |
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Thanks, Nash, that answers that question. I'm good with that.
Have you guys figured out the definitive answer on how to configure the new neck boards for LCP, or is this still sort of in process...
- M
_________________
Dual Marquee 9500LC Ultras, Dual JVC RS600
Focal Aria 5 custom speakers, HT Tuba
We STILL don't need no stinkin' 7.1!
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Nashou66
Joined: 12 Jan 2007
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Location: West Seneca NY
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Melifluonze
Joined: 25 Nov 2013
Posts: 262
Location: Upstate NY
TV/Projector: 9500LC Ultra
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| Posted: Tue Nov 04, 2014 5:15 pm Post subject: |
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Nash, here's the actual circuit board number and revision...
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_________________
Dual Marquee 9500LC Ultras, Dual JVC RS600
Focal Aria 5 custom speakers, HT Tuba
We STILL don't need no stinkin' 7.1!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Melifluonze
Joined: 25 Nov 2013
Posts: 262
Location: Upstate NY
TV/Projector: 9500LC Ultra
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| Posted: Wed Nov 05, 2014 12:47 am Post subject: |
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Odd that the heat sink has configuration... see attached...
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9396 Time(s) |
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_________________
Dual Marquee 9500LC Ultras, Dual JVC RS600
Focal Aria 5 custom speakers, HT Tuba
We STILL don't need no stinkin' 7.1!
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Nashou66
Joined: 12 Jan 2007
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Location: West Seneca NY
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Dec 06, 2014 8:45 pm Post subject: |
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so yeah i know, this is still not native HD, it's PC 1440 x 960 on an 8 inch tube, showing a JPG, but it's a screen capture from a modified original Electrohome card. P14 voltage filtered, All premium caps on both de-coupling and video coupling, and Intersil EL5166 op-amp. Old Stock 02P VIM, same as the previous pics
not sure why this looks so different from the last ones I took, I mean the light-dark banding? I am 99% sure I used the same pic's there's no other ones in that folder?
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Nashou66
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stridsvognen
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| Posted: Sat Dec 06, 2014 10:57 pm Post subject: |
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The SMPTE pattern on the HD Basic disc is much better, this pattern used here is to bright. Its not possible to evaluate the black betwen the lines, and peaking.
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Nashou66
Joined: 12 Jan 2007
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Dec 06, 2014 11:55 pm Post subject: |
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yeah that looks very good, and it's sharp too, but then again it's a 9500.
I need a set of cheap HD10's so I can run my 9 inch tubes instead.
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stridsvognen
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| Posted: Sun Dec 07, 2014 10:59 am Post subject: |
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What is that..? 110Mhz.?
With or without peaking on the vim.?
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Dec 07, 2014 11:06 am Post subject: |
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| stridsvognen wrote: |
What is that..? 110Mhz.?
With or without peaking on the vim.? |
More like 90MHz pixel clock.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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Nashou66
Joined: 12 Jan 2007
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Location: West Seneca NY
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Dec 07, 2014 1:31 pm Post subject: |
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| Nashou66 wrote: | the TV one Resolution editor shows it at 118 mhz pixel clock.
it depends on the porch settings that the source device uses, TV-One must use a different method.
120 MHZ refresh shows a 150 mhz pixel clock for the same resolution.
But still low and why I like Blending. 
Nashou |
Aren't the scanlines too visible at that resolution on the 9500s? Even at 720P scanlines are visible on a properly set up 8" machine, and that equals to 960 pixels in 4:3, you use smaller resolution on a larger tube.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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