Taller Posted February 16, 2012 Report Share Posted February 16, 2012 I have an issue with the QRX100 running t/c. From camera into QRX is solid; From QRX to TRX900 is solid; TRX900 into 788 is solid, but then the 788 starts running slower within a few minutes. I've tried feeding the 788 from an ERXtcd and get the same problem. In the jam menu on the 788 I can see the RX and TX t/c, and the TX always ends up a second or two behind. I have tried with a second 788, same problem. I've also tried with a lockit box and that's absolutely fine. What's confusing is that timecode is correct all the way through the chain but something is forcing the 788's TX timecode to slow. This only happens if the 788 is hardwired to either the TRX900 or the ERXtcd, not if the QRX and 788 are jammed and left to run. Any ideas? Quote Link to comment Share on other sites More sharing options...
soundslikejustin Posted February 16, 2012 Report Share Posted February 16, 2012 Is the timecode rate in the ERX and TRX set correctly? ie, is it the same in the QRX, TRX/ERX and the 788T? The Zaxnet timecode broadcast is not timecode per se, it is a clocking signal. This is why you can broadcast timecode from the QRX and output a different frame rate from an ERX. Quote Link to comment Share on other sites More sharing options...
Taller Posted February 16, 2012 Author Report Share Posted February 16, 2012 Hi Justin thanks for replying. Yes the timecode rates are all the same at 25fr . I've been through the settings numerous times but it still seems that when I hardwire into the 788 from the trx900 or the ERX the 788 will slow. The incoming (RX) is fine but not the outgoing (TX). Camera, QRX, TRX900, and into the 788 will be rock solid when checked with a master clock but as soon as I run the 788 t/c from the TRX900 the RX slows. Am lost for ideas now. Quote Link to comment Share on other sites More sharing options...
Taller Posted February 22, 2012 Author Report Share Posted February 22, 2012 UPDATE: After messing around I've discovered the ERX, if left to run on it's own feeding the 788, keeps fairly good time but as soon as I turn on the QRX the 788 almost immediately starts to slow down. Anybody have any ideas? This is too weird. Quote Link to comment Share on other sites More sharing options...
Jan McL Posted February 22, 2012 Report Share Posted February 22, 2012 How do you initially "jam" the ERX and/or QRX unit? Ask because I've got similar issues (but not time code related) that I believe involve conflicting transmission of time code and audio via two IFB 2.4GHz sources running at the same time (QRX conflicting with IFB100). This is something I hope to solve this weekend with some other eyes, brains and ears in the room. I think it's a question of timing and being sure to only have one audio/time code broadcast active at one time. Maybe we could do some kind of audio/video phone or Skype together to figure it out. PM or call. Quote Link to comment Share on other sites More sharing options...
Jack Norflus Posted February 22, 2012 Report Share Posted February 22, 2012 Do you have your QRX set to transmit mode? If so have you tried setting TC transmission from QRX to a different frequency? You may be getting some interference. Quote Link to comment Share on other sites More sharing options...
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