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why Extron switcher don't work with Faroudja processor?  

post #1 of 7
Thread Starter 
Hi,

Just bought a new Extron switcher SW 4 AR HVxi few days ago for around $850. It's a 4 in 1 out RGBHV switcher all in BNC terminal. Very expensive but it suppose a quality product. URL at http://www.extron.com/product/product.asp?id=sw4ar-hvxi

My video processor is a Faroudja VP400A and the projector is the NEC XG85. The setup works fine when direct connect the 400A to the XG85 using 5 BNCs to BNCs connection. But using the Extron in the middle won't work. The projector 'INFO' said the singal is at 62.9Khz (right) and 33hz refesh rate (wrong). I only get a flickering video noise picture! But if I use the Faroudja 15pin monitor output with a 15pin to 5 BNCs cable to the Extron, the singal pass fine and the XG85 see the frequence is at 62.9Khz and 59.9hz refesh rate. Yesterday I borrowed a friend's Faroudja LD200 for a test. If using 5 BNCs to the Extron, the projector can never sync. Again the LD200 15pin output works with the Extron.

What give? I want to use the BNCs terminal of the Faroudja to the switcher! Anyone has any idea? Thanks in advance.

Btw, the 5 BNCs cable from Faroudja to the Extron is okay because I tried using 5 I-joins to direct connect the 5 short BNCs cable to the 5 long BNCs cable from the projector without any problem.

regards,

Li On
post #2 of 7
Tricky thing, good for you I know it because I had the same configruration
once.
The high level faroudja sync signals clip the inputs of
the Extrons inputs. They are 5 and 10 Vpp. You can try
double terminate them with additional 75 ohm resistors to
reduce the sync level of the VP 400. Hook an oszi you
will see it.


------------------
make it so
spatz
post #3 of 7
Thread Starter 
Hi spatz,

Thanks for the advice but I don't think so. The Faroudja VP400A manual read:

OUTPUT SINGALS (NTSC)
R,G,B Non-composite, Positive, 714mVp-p
Vertical Sync 59.94Hz, Negative, 4Vp-p, 75 Ohm
Horizontal Sync 62.8KHz, Negative, 4Vp-p, 75 Ohm

I believe that's a 'standard' level singal. Btw, if the expensive 'industial grade' Extron switched still don't work, what else?

regards,

Li On
post #4 of 7
I'm using a SW 4 AR HVxi, DVP5000 and a G-90. I have not had any problems.

As you know, the switcher can be set to manual, or auto switch on synch. If you haven't already, I would try both modes. Other than that, I would send the unit back. It should work.

Tim
post #5 of 7
Tim,
are you running 1080i into the 5000? I know this is a silly question since I already know the answer, but how does the 5000 & G90 look? (I assume it is fantastic but its not often we get to interact with someone who has this "dream" setup!- congrats!)

- Jerry
post #6 of 7
Jerry,

I am running 1080i from a Dish 6000 into the 5000. With my 92" diag. 16x9 1.3 gain Studiotech, the setup, with a good transfer, is incredible. When Roger Galvan set the G-90 up we discussed all the options and trade offs. After viewing contrast settings from 50 to 85. I keep it on 60. I guess that's the benefit of a relatively small screen. Roger confirmed that with the low contrast setting, watching 4:3 Dish programing will not be a raster burn issue, and with the 5000, I can even stomach watching SD Dish programming.

Sorry for the digression Li On. Hope your Extron issue works out.

Tim
post #7 of 7
Tim,
thanks for the info- must be spectacular! and yes, Li On, sorry for the digression and of course I hope the extron issue is resolved.

- Jerry
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