SDA Operator’s Manual
SDA-OM-E Rev H 355
Frequency 100 kHz to 4.5 GHz The bit rate of the signal under test. This number can
also be set to a sub-multiple of the bit rate to show
more than one eye. For example, 2.5 GHz will show
one eye of a 2.5 Gb/s signal while setting the control
to 1.25 GHz will display two eyes.
Auto Scale Vertical Adjusts the vertical scale so that the one level is
centered on 2.5 divisions above the screen center
and the zero level is set to -2.5 divisions.
Auto clear sweeps Clears the eye pattern display on each new
acquisition.
Clear Sweeps Clears the current persistence map from the display.
Scale Top to 4 V to -4 V Scales the one level to a specific voltage on the
display.
Scale Bottom to 4 V to -4 V Scales the zero level to a specific voltage on the
display.
MULTI-EYE MEASUREMENTS
Overview of Multi-Eye Measurement Tools
The Multi Eye Measurement Tool is designed to improve the analysis and processing of serial
data signals in high-speed buses and interfaces commonly used in desktop, server, and storage
applications. It is available with version 4.3 of X-Stream software in SDAs and WaveMaster
DSOs. Its main features are:
• Three Additional Modes of Eye Diagram display:
• Front Side Bus (FSB) Application
• Transition/Non-Transition Bit Application (PCI Express)
• Gated (Qualified) Eye Diagram
• Eye Diagram Measurements available in every mode:
• Amplitude measurements (Height, Amplitude, Zero Level, One Level)
• Timing Measurements (Rise Time, Fall Time)
• Eye-Specific (Crossing, Eye BER)
• Seamless Integration with Standard masks:
• User-Selectable, Dual mask inputs
• Dual Mask Violation Testing
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