from the interface as shown in waveform 1 of figure
b. Input Buffer. Line receiver AR7 is operated
2-4. The buffered signal
is then used
to drive J-K
with a high threshold for maximum noise immunity.
flip-flop U8. Figure 2-4 illustrates the waveforms
and timing relationship of selected signals on the
source for setting the threshold voltage at ap-
digital read/write card.
proximately +1.5 vdc. NRZ format data is received