2016-05-29 20:34 GMT+02:00 Mark J. Blair <n...@nf6x.net>: > My first attempt to use silicone tubing to repair my TU58 rollers was also > unsuccessful. Maybe the material I used is too soft? Your experience > suggests to me that I should hook up an oscilloscope to measure bit timing, > and then adjust the roller composition and diameter to arrive close to the > correct bit length. >
It might be too soft. But the capstan doesn't look to flat when the tape is inserted. So I am not sure. Pin 5 on the 8085 has the read data and pin 7 is the strobe data. Another question is how sensitive it is to speed variations. Apparently it is. Or my tapes are bad. But I cannot tell for sure since I have no working reference. The encoding scheme is rather simple. And decoding is done by some analogue electronics doing integration. Since it is a fixed capacitor value used it can be problematic. /Mattis > > > -- > Mark J. Blair, NF6X <n...@nf6x.net> > http://www.nf6x.net/ > >
