R&S ZVL
GUI Reference
Trace Menu
Operating Manual 1303.6580.32-06
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Limit Check On
Switches the limit check of the active trace on or off. A checkmark appears next to the menu item when
the limit check is enabled.
When the limit check is switched on, a
PASS
or
FAIL
message is displayed in the center of the diagram. If
the limit check fails at a measurement point, the two trace segments to the left and right of the point can
change their color. The
Limit Fail Trace
color is defined in the
Define User Color Scheme
dialog
(Display –
Display Config. – Color Scheme...).
Limit check and display of the limit lines are independent of each other: With disabled limit check, the
limit line can still be displayed, however, no display elements indicating a limit failure will appear.
If no limit lines are defined for the active trace, the limit check can be switched on but will always
PASS the trace.
Limits are checked at the actual measurement points, whereas a limit failure is indicated for the trace
segments on both sides of a failed point. A small number of points causes wide trace segments so that the
out-of tolerance regions can appear wider as they are.
Markers show interpolated values. As a consequence, a trace segment can be failed, whereas a marker
placed on the segment may show a response value within the allowed range. This is shown in the
example below, with an upper limit line at 26 dB, and a marker response value of 25.968 dB. The small
circles correspond to the sweep points; the orange part of the trace is failed.
Remote control:
CALCulate<Chn>:LIMit:STATe ON | OFF
CALCulate<Chn>:LIMit:LOWer:STATe ON | OFF
CALCulate<Chn>:LIMit:UPPer:STATe ON | OFF
CALCulate<Chn>:LIMit:FAIL?
Define Limit Line
Opens a dialog to define the limit line for the active trace on a segment-by-segment basis. In each
