You don't really need that much bars at the head of a digital tape. Unlike analog, you can pause digital without sacrificing the usability of bars. Seems like a lot of tape to waste.
first on a tape based I try for 30 sec even I've gonten it a couple times..but
with the HVX and P2 cards theres no dorp outs to be worried about. and I only run bars if I know I'm down converting to Digibeta or beta... (so the Enginers can say yep your singal is off... Can you fix it I ask ...This is the best we can do...)
but since I've only done that 3 times since febuary I miss the Color bars game...