A: Jitter
is short-term variations of the significant instants of
a digital signal from their ideal positions in time. The
expected edges in a digital datastream never occur exactly
where desired. Defining and measuring the timing accuracy
of those edges (jitter) is critical to the performance
of synchronous communication systems.
A:
A plate cut
from a crystal of quartz in such a way that the plate
contains the X-axis and makes an angle of about 35 1/4¢X
which the optic axis on the r side.
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