Teledyne LeCroy SDA III-CompleteLinQ - Manual (Page 50)

SDAIII-CompleteLinQ Software
Vertical Noise Measurements
Vertical Noise Measurements Overview
Vertical noise measurement capabilities are part of the SDAIII-Crosstalk,SDAIII-CrossLinQ and SDAIII-Com-
pleteLinQ products.
The vertical noise measurements analyze and quantify the vertical noise present on serial data wave-
forms. Noise can be either random or deterministic variations in your serial data signal, and can be
caused by crosstalk due to coupling to other serial data lanes, pickup from EMI emitters, or noise from
the transmitter or receiver. The Noise Measurements toolkit includes tools for quantifying this noise and
views for understanding its distribution, spectra and time-ordering at a selected phase in the UI cor-
responding to the time when a receiver will strobe the bit.
With the Noise Measurements:
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Determine Total Noise (Tn) and separate into random (Rn) and deterministic (Dn) components
using one of three dual-Dirac models.
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Further decompose deterministic noise into Intersymbol Interference Noise (ISIn) and Periodic
Noise (Pn)
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View a track of the noise across the waveform at the sampling phase (RnBUnTrack waveform)
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View the spectrum of the noise track (RnBUn Spectrum), along with the peak threshold and peaks
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View the Pn inverse FFT plot
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View the noise distribution at the sampling phase (Rn+BUn Histogram)
Compatible Models
Noise Measurements are compatible with WavePro/SDA/DDA 7 Zi/Zi-A, WaveMaster/SDA/DDA 8 Zi/Zi-A,
LabMaster 9 Zi-A and 10 Zi series oscilloscopes, and require the SDAIII-Crosstalk, SDAIII-CrossLinQ or
SDAIII-CompleteLinQ software options.
Required Firmware
Your oscilloscope must be running firmware version 6.9.0.3. or higher to support the Virtual Probe
option. Firmware upgrades are available from teledynelecroy.com/support/downloads
Accessing Noise Measurements
Noise measurements are accessed from the Noise Meas button on the SDA Framework dialog.
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