Reference
30
Serial Mask Testing & Serial Pattern Trigger User Manual
There are a number of mask test key points to be aware of prior to using, editing,
or creating a mask.
Mask Testing.
Only one mask standard is active at any time. If you have a mask
selected/enabled and then select a new mask, the new mask replaces the previous
mask. You cannot test to multiple standards simultaneously.
Autofit and Persistence Interaction.
The Autofit function moves the waveform
vertically and horizontally in a mask to reduce the number of segment hits within
a mask. If persistence is set to infinite or variable, each Autofit waveform
movement clears existing persistence data. If Autofit makes frequent waveform
movements, there may be little or no displayed waveform persistence data.
Segments and Mask Hits.
Each mask can have a maximum of 16 segments.
Segments can overlap. The number of mask hits is the sum of all hits in all
segments, regardless of whether or not segments overlap. For example, if a
waveform crosses over an area where two segments overlap, both segments will
count the waveform hit.
Vertices.
Each segment can have a maximum of 50 vertices. Vertices are
numbered counterclockwise, with vertex one generally located at the bottom left
of each segment. The active (selected) vertex is indicated by an X. The instru-
ment automatically assigns numbers to vertices during mask creation or editing.
Mask Margin Tolerance.
Mask margin tolerance moves the mask segment
boundaries by the specified percentage. Negative margins reduce the size of the
segment, making it easier to pass a mask test. If a user defined mask has more
than three segments, turning on mask margins generates an error message.
Turning mask margin tolerance off redraws the mask segment margins to their
default values, but leaves the numeric value as it is, allowing you to quickly
toggle between default and user-set margin values.
Mask Key Points
Summary of Contents for CSA7000 Series
Page 8: ...Preface vi Serial Mask Testing Serial Pattern Trigger User Manual ...
Page 12: ...Getting Started 4 Serial Mask Testing Serial Pattern Trigger User Manual ...
Page 18: ...Operating Basics 10 Serial Mask Testing Serial Pattern Trigger User Manual ...
Page 48: ...Reference 40 Serial Mask Testing Serial Pattern Trigger User Manual ...
Page 62: ...Index 54 Serial Mask Testing Serial Pattern Trigger User Manual ...