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-   -   advc 300 PAL problem (http://forum.grassvalley.com/forum/showthread.php?t=901)

jasonrhl 06-08-2007 02:28 AM

advc 300 PAL problem
 
I have a advc 300 and I have just started to try to play PAL video through it. I have set the dip switch to pal but the video comes out really strange. I cant really explain it but it looks like there are several wide bars and each bar is moved alternately to the left and right.

NTSC plays fine.

is there other switches which i may have to adjust?

Thanks

Jason

GrassValley_BH 06-08-2007 03:33 AM

Make sure you power-cycle the ADVC between DIP switch settings.

jasonrhl 06-09-2007 01:16 AM

I always do that because the manual said so.

:) doesnt do anything

jasonrhl 06-09-2007 01:25 AM

mm
now the status light on the front is flashing :(

whats that mean?

Meow 06-11-2007 01:28 PM

Was wondering the same thing. What does the status led mean? It is off in my situation mostly.

Amazulu 10-13-2013 05:52 PM

Same problem on ADVC-700
 
I have exactly the same problem on ADVC-700.

Tried both switches and menu option for PAL. Powered down. Status does not flash any errors. The picture is distorted to the extend you don't recognize what it is.

GrassValley_BH 10-14-2013 05:31 PM

What standard is your source device, NTSC, PAL, SECAM?

Unless it is a true multi-standard device that is able to do standards conversion, playing a source with a different standard from the playback device itself will produce unpredictable results.

To confuse the matter more (although convenient for those in PAL land), most PAL players will play NTSC tapes, but using NTSC refresh, but PAL color subcarrier frequency (4.43 MHz), which makes the resulting NTSC 4.43 (aka PAL 60) incompatible with true NTSC devices that use 3.58 MHz color subcarrier.

Of course few people in PAL lands know this, because most PAL televisions are very forgiving and happily play NTSC 4.43 signals.

From Wikipedia
Quote:

Many 1990s onwards VCR players sold in Europe can play back NTSC tapes/discs. When operating in this mode most of them do not output a true (625/25) PAL signal, but rather a hybrid consisting of the original NTSC line standard (525/30), but with colour converted to PAL 4.43 MHz—this is known as "PAL 60" (also "quasi-PAL" or "pseudo PAL") with "60" standing for 60 Hz (for 525/30), instead of 50 Hz (for 625/25). Some video game consoles also output a signal in this mode. Most newer television sets can display such a signal correctly, but some will only do so (if at all) in black and white and/or with flickering/foldover at the bottom of the picture, or picture rolling (however, many old TV sets can display the picture properly by means of adjusting the V-Hold and V-Height knobs—assuming they have them). Some TV tuner cards or video capture cards will support this mode (although software/driver modification can be required and the manufacturers' specs may be unclear). A "PAL 60" signal is similar to an NTSC (525/30) signal, but with the usual PAL chrominance subcarrier at 4.43 MHz (instead of 3.58 as with NTSC and South American PAL variants) and with the PAL-specific phase alternation of the red colour difference signal between the lines.
A general chart...
Code:

Tape  Player* Output
NTSC  NTSC    True NTSC (3.58)
PAL  PAL    PAL
NTSC  PAL    NTSC 4.43/PAL 60
PAL  NTSC    Undetermined, sometimes the player will just display "no signal."

* Does not apply to standards-converting multistandard players - these will properly convert the source tape standard to whatever output standard the player is set to.


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