Teledyne LeCroy AORM - Advanced Optical Recording Measurements - Manual (Page 31)

AORM Software Package
923133 Rev A ISSUED: June 2013
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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 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.