Using Limit Lines and Display Lines – LINES Key R&S FSL
1300.2519.12 4.122 E-11
4. To shift the complete limit line parallel in the horizontal direction, select the Shift x button and enter
a
n x shift value. In this manner, a new limit line can be easily generated based upon an existing
limit line which has been shifted horizontally.
5. To shift the complete limit line parallel in the vertical direction, select the Shift y button and enter a
y
shift value. In this manner, a new limit line can be easily generated based upon an existing limit
line which has been shifted in Y direction
6. If required, edit the data as described in "To select a limit line" on page 4.119.
7. Save the limit line (Save Limit Line softkey).
To activate/deactivate a limit line
Prerequisites:
• The x– and y–units of limit line and current measurement setting have to be compatible. For details
refer to "Limit Lines" on page 4.123.
• The limit line has to consist of 2 or more data points.
1. In the Select Limit Line dialog box, select the limit line you want to activate/deactivate. For details
see also "To select a limit line" on page 4.119.
2. To activate or deactivate a limit line for a trace, press the Select Traces to check softkey and
select or deselect the trace(s) to which this limit line applies.
3. To deactivate the limit line for all traces, press the Deselect All softkey.
Display Lines
Display lines help to evaluate a trace – as do markers. The function of a display line is comparable to
that of a ruler that can be shifted on the trace in order to mark absolute values. They are exclusively
used to optically mark relevant frequencies or points in time (span = 0) as well as constant level values.
It is not possible to check automatically whether the points are below or above the marked level values.
The softkeys for setting and switching the display lines on/off work like triple switches. For details see
"To work with display lines" on page 4.119.
Two different types of display lines are provided:
• Two horizontal level lines for marking levels – Display Line 1 and 2
The level lines are continuous horizontal lines across the entire width of a diagram and can be
shifted in y direction.
• Two vertical frequency or time lines for marking frequencies or points in time – Frequency/Time
Line 1 and 2
The frequency or time lines are continuous vertical lines across the entire height of the diagram and
can be shifted in x direction.
Each line is identified by one of the following abbreviations:
• D1: Display Line 1
• D2: Display Line 2
• F1: Frequency Line 1
• F2: Frequency Line 2
• T1: Time Line 1
• T2: Time Line 2
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