Teledyne-lecroy AORM - Advanced Optical Recording Measurements Manual de usuario descargar pdf (Pagina 31)

AORM Software Package

923133 Rev A ISSUED: June 2013 29

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.

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Teledyne-lecroy AORM - Advanced Optical Recording Measurements Manual de usuario Pagina 31