LeCroy DDA 7 Zi series, Руководство оператора

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Operator's Manual
WP700Zi-OM-E-RevA
288
Touch inside the Data Gate field and select
a signal source. You can also select None .
Data Gate specifies the input that will be
used to determine where to perform
measurements on the input signal. If a Data
Gate is selected, the level is assumed to be
high.
The Hysteresis selection imposes a limit
above and below the Threshold , which
precludes measurements of noise or other
perturbations within this band. The width of
the band is specified in milli-divisions.
Select From Data from the Clock/Period
menu if you want to extract the clock from
your input waveform. In this case, all other
clock setup fields become unavailable
except
Clock Slope . Choose Pos , Neg , or
Near . “Near” means the nearest clock edge
to the data edge.
To keep noise out of parametric
measurements, set up a hysteresis band, in
divisions, about a level. The level can be
set to
Absolute (volts) or Percent . In either
case, touch inside the Abs Level or Pct
Level field and enter a value, using the
pop-up keypad.
Select a clock period by having the period
calculated from the clock source, by
choosing a standard, or by manually setting
a clock period. If you choose a clock period
from a standard, you can also set a
multiplier: