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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Thu Mar 05, 2009 2:41 pm Post subject: |
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All the Barco S/Cine series video boards use BW peaking. What it does is help extend the BW of the video amp. But you have to be careful when using it as you don't want to use too much as it could tend to oscillate or have intermitant oscillations etc. Yes you could also do it on the 5166 but I would use a spice model sim first to see what it does using it and what component values to use. Too much can be bad but some can be helpful as VDC found out.
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Walter
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Thu Mar 05, 2009 2:50 pm Post subject: |
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| WTS wrote: | | All the Barco S/Cine series video boards use BW peaking. What it does is help extend the BW of the video amp. But you have to be careful when using it as you don't want to use too much as it could tend to oscillate or have intermitant oscillations etc. Yes you could also do it on the 5166 but I would use a spice model sim first to see what it does using it and what component values to use. Too much can be bad but some can be helpful as VDC found out. |
All peaking does on my 808s is brighten the left edge of red things... 
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Thu Mar 05, 2009 3:57 pm Post subject: |
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| Quote: | | One of the resonant caps aren't being Switched in and I am not getting the proper voltage reading on the Driver mosfet to open the gate on Q114 of resonant cap mosfet to switch it in. Think its the Zener diode... oh wait i went off tangent there for a bit. |
LOL!!! For an uneddycated fry-cook you're pretty damn smart, Athanasios!! I had most of an EE degree at one time and I barely understand what you said! 
Beautiful room, too! I don't remember seeing a shot of your HT before. Nice work!
Yeah, that first pic (3 resistors that come to a point) looks like the faint-line mod. I really need to do that on mine when I get a free minute -- my "faint line" is pretty darn noticeable. I like the way yours looks (all on top of the circuit board) instead of the stock recommended procedure.
But what's the 3 long resistors in the first pic? I don't remember seeing that one before.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Thu Mar 05, 2009 5:29 pm Post subject: Re: LongBow Rough Set up pics |
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| Nashou66 wrote: | Now for a pic of the 2035-02p Rev21 VIM Some things I have never seen before,
Must be for the LongBow aspect ratio which was preset for 16x9 when i first turned it on.Athanasios |
I had a version 21 VIM here. With trim pots there, it suggests these boards were tuned for peak performance at a specific resolution, no?
Last edited by draganm on Wed Jun 23, 2010 9:10 pm; edited 1 time in total
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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Thu Mar 05, 2009 5:36 pm Post subject: |
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Perisoft, what you're thinking of is a different type of peaking not BW peaking.
Not sure why they would need to BW peak the 449 as it has a 0.1 db of 200mhz which is pretty damn good to start with. I guess they figured it needed more.
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Walter
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Mar 05, 2009 7:32 pm Post subject: |
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| garyfritz wrote: | | Quote: | | One of the resonant caps aren't being Switched in and I am not getting the proper voltage reading on the Driver mosfet to open the gate on Q114 of resonant cap mosfet to switch it in. Think its the Zener diode... oh wait i went off tangent there for a bit. |
LOL!!! For an uneddycated fry-cook you're pretty damn smart, Athanasios!! I had most of an EE degree at one time and I barely understand what you said!
Beautiful room, too! I don't remember seeing a shot of your HT before. Nice work!
Yeah, that first pic (3 resistors that come to a point) looks like the faint-line mod. I really need to do that on mine when I get a free minute -- my "faint line" is pretty darn noticeable. I like the way yours looks (all on top of the circuit board) instead of the stock recommended procedure.
But what's the 3 long resistors in the first pic? I don't remember seeing that one before. |
Lol yeah Gary, I am a line cook at my restaurant, but a line Cook with an economic degree with a concentration in
Finance. 
Thanks on the theater I did almost all the work myself, with the Rough construction I had some help from the Builder of my house,who became my best friend. I did all the wiring, built the columns. Put in the drop ceiling etc, just mudding and sanding the dry wall i hired it out along with all the insulation and carpet.
Those three long resistors are not resistors, they are diodes to help prevent HVPS shut down in two cases, if one of the VNB's is not on you can still test the set for a period of time. And it helps in some cases with high vertical frequencies
with the same thing HVPS shut down or a full blanking of video on the neck card.
| Draganm wrote: | | Quote: | Nashou66 wrote:
Now for a pic of the 2035-02p Rev21 VIM Some things I have never seen before,
Must be for the LongBow aspect ratio which was preset for 16x9 when i first turned it on.
Athanasios |
I had a version 21 VIM here, gave it to a friend of mine. Where the 3 green trim pots are it had what looked like 3 green low profile cpacitors? It had all that other stuff too I think except for the 3 resisotrs tied together.
With trim pots there, it suggests these boards were tuned for peak performance at a specific resolution, no?
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Draganm you could be right!! maybe this is why i had distortion at 1080p@60 and lower and only got a good signal at 1080p@70. i will have to ask Scott when he gets back from Boeing.
| WTS wrote: | Not sure why they would need to BW peak the 449 as it has a 0.1 db of 200mhz which is pretty damn good to start with. I guess they figured it needed more.
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God point as i noticed the CLC449 also has one of the highest .1 db of 200mhz higher than the other chips i have tried even the EL5166, but the low noise of the EL5166 is why i like it. if i can use the same circuit for that it be nice to see what it can do, as long as no more noise gets added this way.
But going back to Draganm's observation, i need to do a firmware update to my C2-2250 and I should try the Lumagen to the LongBow as well with 1080p@48 I have set up in it i tried 800p@72 and it looked ok but i think it needed some tweeking of the timings, with the TV-One you need to use a resolution editor on a pc then up load and test it, i think it can be done via front panel but its not easy so the PC method works best for me.
Athanasios
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Last edited by Nashou66 on Tue Feb 01, 2011 12:14 am; edited 1 time in total
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emdawgz1
Joined: 14 Mar 2006
Posts: 7949
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| Posted: Thu Mar 05, 2009 7:50 pm Post subject: |
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| Nashou66 wrote: |
Lol yeah Gary, I am a line cook at my restaurant, but a line Cook with an economic degree with a concentration in
Finance.
Thanks on the theater I did almost all the work myself, with the Rough construction I had some help from the Builder of my house,who became my best friend. I did all the wiring, built the columns. Put in the drop ceiling etc, just mudding and sanding the dry wall i hired it out along with all the insulation and carpet.
Athanasios |
I also have a finance degree, and i've been a line cook..... The cooking job requires more skill.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Mar 05, 2009 8:58 pm Post subject: |
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| emdawgz1 wrote: | | Nashou66 wrote: |
Lol yeah Gary, I am a line cook at my restaurant, but a line Cook with an economic degree with a concentration in
Finance.
Thanks on the theater I did almost all the work myself, with the Rough construction I had some help from the Builder of my house,who became my best friend. I did all the wiring, built the columns. Put in the drop ceiling etc, just mudding and sanding the dry wall i hired it out along with all the insulation and carpet.
Athanasios |
I also have a finance degree, and i've been a line cook..... The cooking job requires more skill.
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I tell ya, it really is... it takes talent and common sense and trust me some very smart people
have come through my diner while going to University, but just lacked the common sense to do this job.
But have gone onto be lawyers and Doctors... go figure.
Some how i was lucky with some brains and Common sense and mechanically inclined. But i do have the firm
belief anyone can do anyhting if they put thier mind to it and are allowed to pursue it with out
getting in their way. I have seen this form some guys here who have never done any thing
with electronics and now are soldering, analyzing and having fun learning.
Tonight I hope to hook up the lumagen to the PJ and mess with it that way as I am more familiar with the lumagens menu
and controls. I want to find out why the LB only syncs correctly to high frequencies. I ahve to pull the HDM and look at the schematics Scott sent me. he said there are a different software version on the HDM.... or was it the CLm? i have to look at both.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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emdawgz1
Joined: 14 Mar 2006
Posts: 7949
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| Posted: Thu Mar 05, 2009 9:08 pm Post subject: |
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| Nashou66 wrote: | | emdawgz1 wrote: | | Nashou66 wrote: |
Lol yeah Gary, I am a line cook at my restaurant, but a line Cook with an economic degree with a concentration in
Finance.
Thanks on the theater I did almost all the work myself, with the Rough construction I had some help from the Builder of my house,who became my best friend. I did all the wiring, built the columns. Put in the drop ceiling etc, just mudding and sanding the dry wall i hired it out along with all the insulation and carpet.
Athanasios |
I also have a finance degree, and i've been a line cook..... The cooking job requires more skill.
|
I tell ya, it really is... it takes talent and common sense and trust me some very smart people
have come through my diner while going to University, but just lacked the common sense to do this job.
But have gone onto be lawyers and Doctors... go figure.
Some how i was lucky with some brains and Common sense and mechanically inclined. But i do have the firm
belief anyone can do anyhting if they put thier mind to it and are allowed to pursue it with out
getting in their way. I have seen this form some guys here who have never done any thing
with electronics and now are soldering, analyzing and having fun learning.
Athanasios |
I agree and disagree. Academically, i think everyone has the means to succeed. The dividing line is the determination to stay with it or to quit. Personally, i have a talent for language. It comes easy to me. Math... i had to grind my way thru Calculus and advanced math.
BUT. When it comes to some manual jobs. Like working a short order grill..... i have the skill, but i lack the temperament. Working a morning rush.. after about an hour... my mind just turns to mush. I cant keep things straight. I had to invent checklists so i would get orders right....
BTW, You truly SUCK!
Nice score, you've got me scanning the 'bay and others for an upgrade. 
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Bruce 09
Joined: 08 Mar 2006
Posts: 747
Location: Kamloops BC, Canada
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| Posted: Thu Mar 05, 2009 10:03 pm Post subject: |
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| Nashou66 wrote: | Got one in and will possibly do a quick set up tonight if I am up to it I was working
on a FCM issue the past few days, i know, I know set up the LongBow!!! But I love
the challenge of solving a Problem and I am getting close on this one, One of the resonant
caps aren't being Switched in and I am not getting the proper voltage reading on the
Driver mosfet to open the gate on Q114 of resonant cap mosfet to switch it in. Think its
the Zener diode... oh wait i went off tangent there for a bit. here is a pic of the longbow
next to last years 9500LC Gov Liq find courtesy of Bruce and my trusty M800 on the ceiling
that has allowed me to still watch movies while i messed around with the 8500 that used to
be on the road case that the scope you see is on behind the Longbow, I just love saying Longbow!!!
Longbow #1 I Nick named "New moon " ( in honor of Indian name's given to Helocopter military heritage)
for being the first into the theater. I'll need a name for the second one too, what can you guy's
come up with to coincide with his twin new moon?
Well here is New Moon with the gang
Off for a Starbucks to keep the economy going here in West Seneca, hey another Indian Name!
It was Meant to be !!!
Athanasios |
Looking Good Athanasios! NICE ROOM AS WELL!! Interesting find on the Vim .. What tubes Did you find in them ?
They won't arrive here till Tuesday here 
I guess your new line is want to come over to my theater and take a look at my longbow 
Bruce
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Thu Mar 05, 2009 10:12 pm Post subject: |
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| Bruce 09 wrote: | | I guess your new line is want to come over to my theater and take a look at my longbow |
Nice! Better than, "Wanna come over to my theater and take a look at my new 8-incher?", I guess.
SC
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Bruce 09
Joined: 08 Mar 2006
Posts: 747
Location: Kamloops BC, Canada
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| Posted: Thu Mar 05, 2009 10:14 pm Post subject: |
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| ecrabb wrote: | | Bruce 09 wrote: | | I guess your new line is want to come over to my theater and take a look at my longbow |
Nice! Better than, "Wanna come over to my theater and take a look at my new 8-incher?", I guess.
SC |
SC to some people 8" is a long bow ...
Bruce
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Thu Mar 05, 2009 10:21 pm Post subject: |
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Damn, all the talk about 8-inchers and you suck....I don't think I like where this thead is goin....Not that there is anything wrong with it...
Mike
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Mar 05, 2009 11:46 pm Post subject: |
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| MikeEby wrote: | Damn, all the talk about 8-inchers and you suck....I don't think I like where this thead is goin....Not that there is anything wrong with it...
Mike |
I just read that as "I don't think I like where this thread is groin."
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Mar 06, 2009 5:33 am Post subject: Ultra vs LongBow Ultra HDM pics |
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Ok Took pics of a stock Ultra HDM i have here and the LongBows HDM, mods done
on here as well, and once again we have to wait till Scott gets back to find out
more info.
Stock Ultra HDM
2003 08p iss .1 2
LongBow HDM
2003 08 iss .2 7
Notice the larger heat sink !!!
Stock HDM close up
LongBow HDM Close up
notice all the smaller Wima caps, on the stock ultra
they used Wimas for the larger caps on the Longbow those are
Vishay and ERO's(eros used on most other HDM's)
Unusual Software number system on Daughter Board
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
Last edited by Nashou66 on Tue Feb 01, 2011 12:18 am; edited 1 time in total
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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Fri Mar 06, 2009 4:16 pm Post subject: |
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Athanasios ,
Just because an opamp has a 0.1db of 200mhz doesn't mean it has what it takes to be a great performer. I'd be curious to know what VDC puts in their latest releases.
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Walter
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Mar 06, 2009 7:22 pm Post subject: |
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| WTS wrote: | Athanasios ,
Just because an opamp has a 0.1db of 200mhz doesn't mean it has what it takes to be a great performer. I'd be curious to know what VDC puts in their latest releases. |
well on this Rev21 board its the 449. And Yes its not everything, the higher slew rate of the El5166 is also nice, i am very tempted to add the EL5166 to an 02 vim i have hear and remove Tse's bandwidth circuit on that vim. I might have to give it a go, if it looks ok I can swap out the chips but only if i see an improvement there wise the longBow vim wont be scalped!
TSE hurry back we have Questions!!!!!
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Fri Mar 06, 2009 8:48 pm Post subject: |
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Wait until you get used to it first then make the changes and see.
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Walter
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Mar 06, 2009 9:03 pm Post subject: |
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| WTS wrote: | | Wait until you get used to it first then make the changes and see. |
But of course!! I just need to ask Scott why the PJ wont sync cleanly to lower resolutions... i think its the default timings in the existing sets of resolutions on the C2-2250, i looked at the sync times and for the lower resolutions they have much lower than the 1us timings for either the H or V, cant remember. But the marquee needs closer to 1us for one of them.
Once i mess around with it more I'll know more and report back, I will also try the LGBH200 directly into the moome card and see if the 1080p@60 there is stable.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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| Posted: Sat Mar 07, 2009 2:47 am Post subject: |
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Athanasios,
How the hell do you ever have time to watch a movie? Brand new ficking projectors and you have the boards, software and lenses ripped out of them.
Well at least yours were working before you started....Tell me you did fire them up...Didn't you?
My XG as been on the ceiling for 7 years....Get blending!!! NEED SCREEN SHOTS!!! 
Mike
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