Re: Mark space ratio in 1531 data signal

Den Tue, 10 Dec 2019 07:17:59 -0600 skrev "Jeffrey Birt"
<birt_j_at_soigeneris.com>:
> I don't understand the question. There is only one signal from the
> cassette read head. It gets amplified and 'squared up' to make a
> digital signal out of it. That is it. 

(And in this there is an amount of hysteresis so it won't pick up noise
from blank tapes)

> For writing the tape head is driven to saturation or not. It is not
> very complicated.

Rather saturation in either polarity.


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