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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Wed Nov 14, 2007 3:04 pm Post subject: RTC2200: plug and play? |
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i want to use my RTC2200 to add gamma control on the RGB stream. here is how i have it plugged in
RGB scaler output -- 5 wires in ceiling --- RTC2200 --- NECXG
to do this i have a pair of 6" VGA->BNC cables
5 BNC female -> DB15male
and
5 BNC male -> DB15male.
this allows me to plug the RTC2200 into the XG and plug the cable (the used to plug into the XG) into the RTC2200
without the RTC2200 i have the XG synced and converged to 1280x1024. i shut down the XG, insert the RTC2200 (plug in it and turn on the XG. i then get a completely black screen with the message "new signal". not a misconverged image, just black screen.
i would have thought that the RTC2200, in pass-thru mode, would have been plug and play and that i'd just insert it into the stream and bob's your CEO. what did i misunderstand?
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Wed Nov 14, 2007 3:29 pm Post subject: |
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kal wrote: | The RTC2200 allows for imagine shifting and allows you to play with the size. If you change these enough your projector will likely see a different 'signal' and require a new memory block.
Kal |
well i haven't touched any trimpots [yet] but perhaps the out of box settings are already different enough
but i'm not seeing a shifted/distorted/sized image. i'm not seeing any image at all.
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Link Posted: Wed Nov 14, 2007 3:31 pm Post subject: |
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zaphod wrote: | kal wrote: | The RTC2200 allows for imagine shifting and allows you to play with the size. If you change these enough your projector will likely see a different 'signal' and require a new memory block.
Kal |
well i haven't touched any trimpots [yet] but perhaps the out of box settings are already different enough |
Yes, possibly different enough from whathever you have set up from out of your scaler.
Quote: | but i'm not seeing a shifted/distorted/sized image. i'm not seeing any image at all. |
Does the XG require that you store or set up a memory block before you see anything? I can't remember... it's been a while since I've had one.
Hopefully Kim will chime in with some thoughts/ideas as well.
Kal
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Wed Nov 14, 2007 3:47 pm Post subject: |
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kal wrote: | Does the XG require that you store or set up a memory block before you see anything? I can't remember... it's been a while since I've had one.
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no, if i send it a new signal it presents a horribly converged image. it's like watching fantasia when on acid. i would imagine.
kal wrote: | Hopefully Kim will chime in with some thoughts/ideas as well.
Kal |
here's two that are hoping
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Link Posted: Wed Nov 14, 2007 3:56 pm Post subject: |
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Do you have a computer monitor or other display with RGB input that you can use to test out the RTC2200?
I do remember with my RTC2200, if I turned some of the pots enough, you could reduce some of the settings enough such that the projector could no longer sync properly. This is likely the problem. XG's are also a bit fussy about small porch settings IIRC.
Check out the manual and start tweaking some of the pots.
Kal
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Wed Nov 14, 2007 4:27 pm Post subject: |
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hmmm, good thoughts. i'll try that. lots of fun. i was hoping that pass-through would be unaltered by all the pots save for gamma. 'course i was also hoping for whirled peas.
_________________ walk gently. leave a good impression.
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dbaisey
Joined: 09 Mar 2006 Posts: 821 Location: Southern Cal LA / Seattle WA
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Link Posted: Wed Nov 14, 2007 8:50 pm Post subject: |
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zap,
Hit the info button and see what the signal properties say or you might have sync reversed or sync polarity is throwing it off. The 2200 has H shift so that may also be off or it could be phase in the projector. First see if your signal properties are different. If so do a signal entry under temporary then phase it.
Im betting right now its sitting at the top of the entry list whatever that may be. Doug
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Wed Nov 14, 2007 9:46 pm Post subject: |
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cool idea Doug, i'll take a look at the info panel next try at this.
_________________ walk gently. leave a good impression.
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greg_mitch
Joined: 03 May 2006 Posts: 5321
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Link Posted: Thu Nov 15, 2007 2:30 am Post subject: |
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Is there a chance that you have a component input plugged in as well that is set to a different resolution? I can't remember, but I thought the component input took priority and the VGA only works for pass through if it doesnt sense a component input.
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 17860 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Link Posted: Thu Nov 15, 2007 3:18 am Post subject: |
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greg_mitch wrote: | Is there a chance that you have a component input plugged in as well that is set to a different resolution? I can't remember, but I thought the component input took priority and the VGA only works for pass through if it doesnt sense a component input. |
You have it backwards. The RGB input has priority if both are on. See the manual and the FAQ:
"Auto-switches between inputs (if no sync is present on the RGB input than the component input is selected)."
Kal
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beun
Joined: 28 Jun 2006 Posts: 676
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Link Posted: Thu Nov 15, 2007 3:38 am Post subject: |
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Zaphod,
Did you receive your RTC2200 recently? I am not quite sure what sync the XG needs but the new batch of RTC2200 has a sync amplitude of a bit more than 1Vpp in 75 Ohm and 2.5V in a high impedance. If your XG has a 1V setting for the sync you will have to use that.
With all settings unchanged from shipment the sync through the RTC2200 from the RGB bypass is transparent, it will not change the width or position.
Edit:
Looking through the manual the impedance should be set to 75 Ohm. Also are the H and V sync hooked up correctly?
_________________ ESL-0.5 Full Range Electrostatic Loudspeakers | RTC2200 Component to VGA Converter with Gamma Boost
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Tom.W
Joined: 09 Mar 2006 Posts: 6637
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Link Posted: Thu Nov 15, 2007 5:16 am Post subject: |
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Mine worked perfectly out of the box but this was with a Barco. What are your sync settings ?
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Thu Nov 15, 2007 5:58 am Post subject: |
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beun wrote: | Zaphod,
Did you receive your RTC2200 recently? I am not quite sure what sync the XG needs but the new batch of RTC2200 has a sync amplitude of a bit more than 1Vpp in 75 Ohm and 2.5V in a high impedance. If your XG has a 1V setting for the sync you will have to use that.
With all settings unchanged from shipment the sync through the RTC2200 from the RGB bypass is transparent, it will not change the width or position.
Edit:
Looking through the manual the impedance should be set to 75 Ohm. Also are the H and V sync hooked up correctly? |
Kim,
yes, i received mine in the latest batch. (Lance Bailey in Wa state).
i'm still learning about sync and so on and i just don't know what you mean by that. do i need to adjust the impedence or not?
signed,
confused.
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beun
Joined: 28 Jun 2006 Posts: 676
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Link Posted: Thu Nov 15, 2007 6:12 am Post subject: |
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While looking through the manual of the XG I found two settings for the sync input impedance: 75 Ohm and Hi-Z. According to the manual, the H-Z setting is to be used for TTL level sync signals, conversely the 75 Ohm setting than should be used for the 1Vpp sync. Can you check wich stting you have on your XG?
Kal do you have any comments on my assumptions here?
_________________ ESL-0.5 Full Range Electrostatic Loudspeakers | RTC2200 Component to VGA Converter with Gamma Boost
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Thu Nov 15, 2007 6:25 am Post subject: |
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i just tried the rtc2200 again, and same results, but i snapped the 3 source info info pages.
page 1
Code: | NAME
INPUT TERMINAL INPUT A
INPUT SOURCE
VIDEO MODE RGB
FREQUENCY +h = 14.80 KHz
+v = 34.40
SYNC POLARITY HD (+) VD (+) |
page 2
Code: | SYNC CONTROL AUTO
G-SYNC
COUNTER 0
DISPLAY TIME 0000:00
SOURCE LOCK OFF
AKB OFF
G-Y MATRIX |
page 3
Code: | POSITION WIDE
FONT NORMAL
APERTURE MANUAL
LEVEL 1
SYNC TERMINATION 75 Ohm
AFC NORMAL |
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beun
Joined: 28 Jun 2006 Posts: 676
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Thu Nov 15, 2007 6:55 am Post subject: |
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i unplugged the RTC2200 and took a look at the info pages again. on page one these change:
fh = 76 KHz
fv = 72 KHz
SYNC POLARITY HD(-) VD(-)
so, the frequencies go to more expected values and the sync polarity changes to neg.
to me, this says that the RTC2200 is outputting positive syncs and not negative syncs.
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dbaisey
Joined: 09 Mar 2006 Posts: 821 Location: Southern Cal LA / Seattle WA
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Link Posted: Thu Nov 15, 2007 9:08 am Post subject: |
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zap,
You had some weird things going on here at first when its plugged in. 14.80 kHz x 34.40 Hz and its seeing it as sync on green instead of RGBHV separate sync. Thats less then video freq at 15.75 kHz. Something isn't right unless its not passing a signal
Then you have 76 kHz so that seems correct for 1280x1024 at 72 Hz. Its seeing neg neg sync. At that freq what does it say for sync? It should say separate. It's unplugged? Doug
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zaphod
Joined: 16 Jun 2006 Posts: 2002 Location: Cloverdale
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Link Posted: Thu Nov 15, 2007 3:22 pm Post subject: |
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i'll check when i get back home. i don't remember what it said for sync.
it's starting to look like i'm cabling up the rtc2200 incorrectly, but i can match colours with the best of them i wonder if i have a problem in one of the VGA-RGBHV cables that markertek sold me...
_________________ walk gently. leave a good impression.
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