Bypass doesn't bypass anything that I've ever noticed.
"Bypass" is actually a reset. Hold it for about 3 seconds to reset the current proc amp settings, then tap it several more times to reset each of the other proc amp settings. On the 4000, you manually change channels and repeat this.
The VP301 boards inside the TBC-3000/4000 were always fidgety, and it doesn't help that DataVideo gives zero documentation. As I understood it, from past conversations with DataVideo, the gear came with hands-on instructions when deployed in a facility. That's why DataVideo docs are pathetic pamphlets, and about as useful as used toilet paper. Nothing about it is actually documented, especially the internal switches. I had to learn what everything did by trial, and hoping not to break anything in the process.
I learned long ago to use it
- as a TBC-1000, in/out per channel
- proc amp if needed
- reset proc amp when done, using above method
If you don't screw around with it beyond that, it'll be the more stable TBC that I've ever used.
Though it still eats PSUs like candy. All DataVideo do. This time of year is the worst, something about the cold coils in the AC adapter just cannot cope. It's why I have backups on hand, just in case.
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