Concepts and Features
R&S
®
ZNB/ZNBT
130
User Manual 1173.9163.02 ─ 38
As a consequence of the limit line rules, a DUT will always pass the limit check if no
limit lines are defined.
When the sweep axis is changed from linear frequency sweep to logarithmic sweeps,
straight limit lines are transformed into exponential curves. The sweep points are re-
distributed along the x-axis, so the number of failed points may change.
While "Show Limit Line" is active, the diagrams display all limit line segments.
Exception:
In a segmented frequency sweep with point-based x-axis, gaps between
the segments are minimized. To facilitate the interpretation, the R&S
ZNB/ZNBT dis-
plays only the limit line segments which provide the limit check criterion (the "tighter"
limit line at each point). In the example below, this rule results in a single, continuous
lower limit line.
Operations on Traces
