User guide

Set criteria for the markers:
• Show Marker Lines
This option enables the markers on the screen.
• Reset marker
This brings the marker back to its default position.
Mask
• Load Mask File
With Load, a mask file is loaded. Once the file is successfully loaded the Start
button gets activated.
Set Mask Alignment:
• Display
The Display mode aligns the mask using the Vtop and Vbase values of the displayed
waveform. All the threshold coordinates of the mask will be relative to this voltage.
This is the default mode for mask alignment.
• Eye Boundaries
The Eye Boundary mode aligns the mask using the 1 level and 0 level of the
waveform. The 1 level and the 0 level are calculated between the Eye Boundary 1,
and Eye Boundary 2.
Set Mask Margins:
• Margins on
Mask Margins, allows the user to enlarge or shrink a mask in order to see the
margin size, and how much of it is violated. The maximum and minimum margins
are defined within the mask files.
Set Mask Scaling
With mask scaling the mask can be manually enlarged, shrunk, and moved around.
With the logic levels track selected, the mask regions are bound together, and
move together with a fixed amplitude. Position (pos) gives the timing displacement,
and dT gives the delta time offset.
Set Mask Run Control:
6 Advanced Analysis
336 Agilent J-BERT N4903B High-Performance Serial BERT
Markers
Mask Selection
Mask Alignment
Mask Margins
Mask Scaling
Mask Run Control