I’m trying to get rid of some artifacts in my LZX system’s output. Problem #1 looks like this:
The rainbow colors you see are scrolling by quickly. The patch is external media player composite output → Cadet III → Cadet VII for scaling + offset → Bridge mult → RGB inputs of Cadet II encoder. Additionally, the composite out from the Cadet III is going to the sync input of the Cadet I.
I’ve tried to isolate the issue by changing the display device. Two different LCD displays show the issue with direct composite inputs. Running it through a Blackmagic Designs Analog to SDI → SDI to HDMI (or BMI UpDownCross HD) → monitor showed the same thing. Analog to SDI Mini → BMI HyperDeck Studio Mini shows the same artifacts on its built-in screen.
I also eliminated the power brick (a no-name 12V 5A adapter) and powered my Malekko Power from a good quality bench supply. No change.
Finally, I unplugged every other module except Cadets I, II, 2X III, and a Cadet VII. Still no change.
The rig is built into a 6U rack case, and this is the test patch:
I’m also investigating fuzzy edges on my Cadet VIII Hard Keys.