Okay, so here are my timecode settings:
Panny HDX900: 59.94, 24p mode, NDF
Sounddevices 664: 24p timecode Ext/Cont. timecode
Denecke TS-C slate: postion 3 for 24p. Slate and 664 are jammed via lemo cable, sometimes unplugging slate to go slate something.
Timecode drifting on camera, slate and recorder are the same.
Don’t have the HDX900 any more but have my HPX3700 sitting on the shelf, so I could do a test and put it in 59.94, 24p with the same settings.
Theories so far:
1. wrong setting in one of the devices
2. i dropped my Denecke slate on the gravel once or twice, maybe the crystal got busted?
3. Sounddevices 664 has latest firmware, but maybe a bad crystal?