On the indicated channel, adds a limit line segment for the active trace. If the optional parameters are omitted, an empty segment is added.
No query.
Limit Lines for Rectilinear Displays
For rectilinear displays, up to 50 segment lines can be added to each trace display.
Limit Lines for Circular Polar and Smith Chart Displays
For circular displays (Smith Impedance Chart, Smith Admittance Chart, Linear Polar Graph, and Log Polar Graph), two limits can be defined as an Upper Limit and a Lower Limit. For example, the following commands set upper and lower limit lines:
• Clears all limit lines
:CALC1:LIM:SEGM:CLE
• Adds an upper limit line
:CALC1:LIM:SEGM:ADD UPP
• Sets the radius of the upper limit line to 1.321
:CALC1:LIM:SEGM:DEF 1.321
• Adds a lower limit line
:CALC1:LIM:SEGM:ADD LOW
• Sets the radius of the lower limit line to 0.395
:CALC1:LIM:SEGM:DEF 0.395
Limit Lines for Eye-diagram Displays
For eye-diagram displays, up to 50 segment lines can be added to each trace display. Limits can be defined as Upper, Lower, or Polygon.
Cmd Parameters
{<No argument>} | {<char>} | {<char>,<NRf>,<NRf>}
<No argument> If no argument is added to the command, the command adds an empty segment.
Defines a limit line segment for an added segment for the active trace of the indicated channel.
Returns the current limit line segment for the active trace of the indicated channel.
• If only one <NRf> parameter is set, it defines the limit radius for a circular display.
• If two <NRf> parameters are used, it defines the Y1 start value and the Y2 stop value.
• If four <NRf> parameters are used, it defines the Y1 start value and the Y2 stop value for the upper trace in a dual trace display, and the Y12 (Y1sub in the GUI) start value and the Y22 (Y2sub in the GUI) stop value for the lower trace in a dual trace display.
Sets the limit line type of the current limit line segment being defined for the active trace of the indicated channel where:
• UPPer = Upper limit line
• LOWer = Lower limit line
• POLYgon = Polygon limit line, valid only for Time eye-diagram trace with NRZ signaling type
• POL1ygon = Polygon1 limit line, valid only for Time eye-diagram trace with PAM-4 signaling type
• POL2ygon = Polygon2 limit line, valid only for Time eye-diagram trace with PAM-4 signaling type
• POL3ygon = Polygon3 limit line, valid only for Time eye-diagram trace with PAM-4 signaling type
• NONe = No limit line
Returns the limit line type of the current limit line segment being defined for the active trace of the indicated channel.
Note: The limit line must exist before using this command. If no limit lines have been created, use the prerequisite command below to add one or more limit lines:
Defines the indexed limit line segment for the active trace of the indicated channel. The limit segment must exist.
Returns the indexed limit line segment for the active trace of the indicated channel.
Note that if a :SYSTem:PRESet command is issued where the :SYSTem:PRESet:TYPe RESET command has been previously set, any user-defined segmented limit lines are cleared and the query generates an error.
One <NRf> Parameter
If only one <NRf> parameter is set, it defines the limit radius for a circular display.
Two <NRf> Parameters
If two <NRf> parameters are used, it defines the Y1 start value and the Y2 stop value.
Four <NRf> Parameters
If four <NRf> parameters are used, it defines the Y1 start value and the Y2 stop value for the upper trace in a dual trace display, and the Y12 (Y1sub in the GUI) start value and the Y22 (Y2sub in the GUI) stop value for the lower trace in a dual trace display.
Sets the limit line type of the indicated limit line segment for the active trace of the indicated channel where:
• UPPer = Upper limit line
• LOWer = Lower limit line
• POLYgon = Polygon limit line
• POLYgon = Polygon limit line, valid only for Time eye-diagram trace with NRZ Signaling type
• POL1ygon = Polygon1 limit line, valid only for Time eye-diagram trace with PAM-4 Signaling type
• POL2ygon = Polygon2 limit line, valid only for Time eye-diagram trace with PAM-4 Signaling type
• POL3ygon = Polygon3 limit line, valid only for Time eye-diagram trace with PAM-4 Signaling type
• NONe = No limit line
Returns the limit line type of the indicated limit line segment for the active trace of the indicated channel.
Note: The limit line must exist before using this command. If no limit lines have been created, use the prerequisite command below to add one or more limit lines:
:CALCulate{1-16}:LIMit:SEGMent:ADD
This adds one (1) limit segment which permits the example below to work.
Sets the start X1 value of the indicated limit line segment for the active trace of the indicated channel. For a dual trace rectilinear display, this sets the X1 start value for both the upper and lower traces.
Returns start X1 value of the indicated limit line segment for the active trace of the indicated channel.
Sets the start Y1 value of the indicated limit line segment for the active trace of the indicated channel. For a dual trace rectilinear display, this sets the Y1 start value for only the upper trace.
Returns the start Y1 value of the indicated limit line segment for the active trace of the indicated channel.