Timecode Issues on Epic Build 3.3.x

[Tim Schumann]

Is anyone else experiencing timecode drift problems on Epic build 3.3.x?

We have multiple cameras with timecode jammed, all on builds above 3.3 and are experiencing drift issues.
Sometimes 1 frame difference, sometimes 4 frames, sometimes 2.

Doesn't seem to be any rhyme or reason to it. The drift is not consistent, not always in the same direction, doesn't seem to be linked to anything such as switching camera on & off, sync to varispeed and back, none of these things seem to be making it predictable....

Project timebase is 25p. Resolution is 5K HD. Compression 7:1.
Happening on up to 5 cameras randomly. Epic-X's and Epic-M'x.

Is anyone else getting this on a project shooting 25p on Build 3.3 or above?

 

[Elliott Balsley]

Might be related to this problem I had. I was using 3.2.21 at the time. I don't have a solution though.
EDIT: Forgot the link: http://www.reduser.net/forum/showthread.php?86500-SDI-Timecode-burn-in-jumps-around

 

[Tim Schumann]

Nope that's an entirely different thing.

Okay let's try it the other way around... is anyone shooting multi-camera shoots with jam-synced timecode with those settings? 5K HD. 25fps. 7:1 Compression on 3 or more Epics?

 

[Michael Lindsay]

Just for clarity: You are Jamming with a Lockit or similar then A (unpluging the lockit) B leaving it plugged in??

PS my experience is that when Jamed and left they will drift a bit (given enough time) but for a hour or so they are ok... If you change battery def Re-jam

 

[Christopher Mills]

oh yeah.. they are not really jammed if you leave them running without a box or cable continuously feeding them TC.. though you'll get "close enough" for single camera syncing if you just jam every hour or so and then let it roll until you re-power