Teledyne LeCroy WaveExpert series Automation Manual - Manual (Page 252)

Chapter Four Control Reference
When activatred starts an automatic process to attempt to learn the base frequency of the clock or
data signal (see DataIsNRZ) and set the BaseFrequency contorl to the found value. Warning: be sure
to provide as many clock or data cycles as is reasonably possible for maximum precision in the result.
FindBaseFrequency Action
' Visual Basic Script
Set app = CreateObject("LeCroy.XStreamDSO")
' Automatically find the frequency for clock or data signal at the input
of the TIE processor.
app.Measure.P3.Operator.FindBaseFrequency
Example
Description
SignalType Enum
Values
Clock
Data
This is the frequency of used to provide expected times for TIE. If a PLL is being used, this frequency
must be within the capture range for the PLL (usually quite close) or you will encounter unexpected
results. Typically the find frequency operation is quite good for setting this value, unless the input
source is "data" and the signal is very stressed (closed eye or nearly closed eye).
BaseFrequency
From 1 to 1e+011 step 1000
Double
Range
Description
FrequencyMultiplier
From 0.001 to 1000 step 0.001
Double
Range
UseBaseFrequency Enum
Values
Custom
Standard
916435 RevA 4-48