CurtPalme.com Home Theater Forum

[CasetheCorvetteman]

Do any of these internals report to Windows what their name is?

As in do they show in available displays as a MOOME or a HDF3?

[VideoGrabber]

[stridsvognen]

[Francisco]

Patience guys, I will do test with fixed camera position and not taken by hand.
Will test 1080p 60hz and 817p 72hz
With: - Eisemann Hdmi solution
- Ext. Moome V2 on port5
- Int. Moome V3 port3

[stridsvognen]

[redfox001]

Indead not to say anything negative but Francisco said that the pattern hardly improved but he did perceive a much sharper image. That made me think that the bandwidth had not improved very much but now I understand that even peaking should have improved the bandwidth so than peaking could not explain for the perception. Far beyond my knowledge this I mean there is no digital processing added is there? Or does the fury...?
On the other hand one could conclude that the bandwith has improved a lot and that shows in the picture but only a little bit in the pattern

[stridsvognen]

[Francisco]

[VideoGrabber]

[CasetheCorvetteman]

At the risk of repeating myself ans since i see no response:

[km987654]

[km987654]

[CasetheCorvetteman]

[Nashou66]

Case moomes EDID he uses is a NEC EDID. on my laptop the Moome internals and the Ext v2 all show up as a NEC display.

Nashou

[stridsvognen]

[geisemann]

To All:

I wanted to answer some questions:

We actually change all the opamps in the switcher and the RGB driver and when doing that it created a lot of oscillation and re-creation of noise in the video chain! It was headache to track down all the noise. We had to add filters to each chip on both the power rails and also the input and output legs. We had to also alter the circuit and add filters. So this work took a lot of time with a spectrum analyzer to find the 2-3 harmonic frequencies to eliminate. The result is the new gen OP-amps can really do there work to amp the video signal.

The higher the BW of the op amp the more risk of noise of oscillation. The good news is the higher the BW the better the picture and more video information is brought though and not muted or distorted.

The op amps we used are approx 2GHZ vs the old Barco 800MHZ so the increase is substantial. The results will be only as good as the condition of the tubes and focus of your tubes. We took the numbers off the chips so you cannot reverse engineer. In the past other people have tried to copy the mods with no success and we keep making changes as we get customer feedback to it be difficult to make a copy then in a month have a new version with a new chip. The mods we made 2 years ago are almost complete different than the ones we make today.

We grid the numbers off the of chips and we also change not one but many many resistors on the cards so you have to un-solder each resistor to check the values and caps etc.


The Fury product wile we use some of the same core modules to save cost we do heavy reworks of this card too. So its not same product and we have made our own custom firmware. There were several problems with the original design.

The internal solution bypasses 75 ohm connectors, motherboard, and connectors in the cards resulting in a much better, less noise and sharper image basically a more direct interface keyed to the video circuit. The old port 3 circuits were stripped off the switcher card as the BW was not acceptable and new transistors and interface capacitors were placed in to allow for the higher BW. The original port 3 card had very poor BW and should never be used in a projector.

I hope that helps some.

Greg

www.eisemann-theater.com

[stridsvognen]

Greg.

What is the bandwidth of the 909 after instaling the complete mod set.?

How high will it go before visible roleoff on the 1:1 pattern, and is there any peaking built into your boards.?

[Francisco]

[CasetheCorvetteman]

[geisemann]

Hi


I don't add any peaking. Peaking is tricky and I leave that up to the customer they need to add more or less based on preference. All peaking has been turned off it looks like in these photos. You can add peaking in the Barco Menu. That being said these pictures look very soft. Not sure if its the tubes, split pack config, or the calibration of the pole magnetic's?

I suspect a split back has much longer cable feeds to the neck cards causing more PF of loss in the cables. This will make the image softer. I hope barco compensated by using large RGB cables but I suspect they didn't.

I recommend people with split packs to look at these cables and possibly upgrade the Video feed to the neck cards ..

All peaking has been turned off it looks like in these photos. You can add peaking in the Barco Menu.

Some MOD specs:

Original cables from Switcher to RGB driver 60PF of capacitance. 17 PF after new lower loss RGB cables used. Factor of 3.

BW of original switcher at a gain of 2 card was aprox 650 MHZ before the mod after the mod 2.2 GHZ Factor of 3.3

BW of original RGB driver card at a gain of 5 was aprox 400 MHZ before and after the mod 860 MHZ Factor of 2


We have a custom neck card mod we are going to give this customer to give him better resolution. He will also be installing simulation grade new P19lug tubes so that should give him a big boost in sharpness aprox 25- 35% The green is the most important and I believe its has a standard resolution Panasonic standard oem Barco tube. We custom order our tubes and pay extra for better glass and gun.

So we are not done yet with this unit.

Again I have not the sharpness difference between split pack / regular 909 and am slightly concerned by larger interconnect cables.


GREG


www.eisemann-theater.com