Waveform Definition Section
The Waveform Definition section is organized in several tabs where controls are
grouped by their functionality: Waveform, Corrections, Jitter + SSC, Link Emulation,
De-Emphasis.
Waveform Tab:
Physical Layer Section: Physical characteristics of the waveform can be set up in this
section. These include the following controls:
Coding/Mod.
This drop-down list selects the different channel coding and modulation
schemes that are supported (see list above). NRZ is the default selection.
Bit/Signaling Rate
This edition field must be used to enter the signaling speed (or baud rate) for
the modulated signal expressed in Bauds (1 Baud = 1 Symbol/s). Baud rate is
equal to the bit rate for two-level line coding schemes. 4GBaud is the default
value.
Edge Shape
This drop-down list allows the selection of shape for the transitions (edges);
choices are ‘Rectangular’, ‘Trapezoidal’ (linear), First Order’ (RC network),
‘Gaussian’, ‘Bessel Thompson’ (4th order Bessel-Thomson reference receiver
filter), ‘Raised Cosine’ and ‘Root Raised Cosine’ (Square Root Raised Cosine).‘
Notes:
The default edge shape is ‘Gaussian’.
For clock signals (i.e. the Clock Toggle button is set to ‘C/2’ or ‘C/4’) the
edge shape is always Gaussian.
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