LeCroy DDA 7 Zi series, Руководство оператора

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Operator's Manual
WP700Zi-OM-E-RevA
278
Threshold, which precludes
measurements of noise or other
perturbations within this band. The
width of the band is specified in
divisions.
Guidelines for Use
1. Hysteresis must be larger than
the maximum noise spike you want
to ignore.
2. The largest value of hysteresis
usable is less than the distance from
the threshold to the closest extreme
value of the waveform.
3. Unless you know the largest
noise and closest extreme level that
will ever occur on any cycle, leave
some margin on both sides of the
threshold.
Threshold Sets the absolute crossing level.
Clock
The clock need only be specified if the parameter requires a clock for the
calculation, or if it is used as the source of the period.
Clock/Period
By selecting From Data , you can
have the clock recovered from the
data. In this case, all other clock
setup fields except
Clock Slope are
unavailable.
When From Clock is selected, the
period is automatically measured
from the clock provided. The clock
must then be configured.
When Period Only is selected,
Period From
Indicates the period of the clock.
When a standard is selected, the
period is set to the value defined by
the standard. You can also set a
xN
multiplier (e.g., 10x).
Custom
allows you
to specify
the clock
period.
When
Custom is
selected,
another field
is displayed
in which to
input the
clock period.