76 Keysight M8194A 120 GSa/s Arbitrary Waveform Generator User Guide
3 M8194A Soft Front Panel
Serial Data Waveform Tab
The Serial Data Waveform tab can be used to create single lane and
multi-lane bi-level and multi-level high-speed digital serial signals and
clocks. User-defined corrections may be applied to signals to compensate
for (or emulate) instrument, interconnections and interconnect linear
distortions. The serial data tab allows you to generate both data and clock
signals. It directly supports a large variety of channel coding and
modulation schemes. This is a list of the currently supported modulation
and channel coding formats:
• NRZ (Not Return to Zero).
• Unipolar RZ (Return to Zero).
• Polar RZ (Return to Zero).
• PAM-4 (Pulse-Amplitude Modulation, 4 level)
• PAM-5 (Pulse-Amplitude Modulation, 5 level)
• PAM-8 (Pulse-Amplitude Modulation, 8 level)
• PAM-10 (Pulse-Amplitude Modulation, 10 level)
• PAM-12 (Pulse-Amplitude Modulation, 12 level)
• PAM-16 (Pulse-Amplitude Modulation, 16 level)
Users can set the bit/signaling rate, basic pulse shape characteristics, and
transition time. Any AWG channel may be selected to generate either a
serial signal or a :2 or :4 synchronous clock. A series of standard PRBS
sequences with different lengths may be selected in order to produce
realistic traffic and to allow bit-error rate testing with standard BER
testers. Signals may be corrected for cabling and the AWG frequency
response in a channel by channel basis. Additionally, external correction
data may be applied to account for the distortions added by additional
cabling, passive or active system blocks or test fixturing. Channel to
channel skew can be also adjusted with resolutions as low as 100fs. The
application takes care of handling the requirements and limits of the target
hardware with respect to maximum and minimum record lengths,
sampling rate, and record length granularity. As a result, generation of the
signals designed in this tab will always be feasible by the instrument and
free of distortions such as wrap-around or timing artifacts at any signal
domain (time, frequency, and modulation), even if the signal is generated
in looped mode.
Figure 18 on page 77 display the Serial Data Waveform tab and its
controls.
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