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<h3>Marker Funct &nbsp;&nbsp;
<a href="javascript:void(0);" onClick="var e; if (parseInt(navigator.appVersion)>=4){e=event;}  if (parseInt(navigator.appVersion) >=2 && typeof(PopupMenu_Invoke) == 'function') PopupMenu_Invoke(e,'','Markers','../Marker/Marker.htm','Measured Quantities','../Measure/Trace_-_Measure.htm','Trace - Format','../Format/Trace_Format.htm');return false;" title="Related Topics"><img src="../../../ss_btn_related_topics.gif" border=0 height=20 width=96 alt="Related Topics"></a>

 </h3>

<p>The <span style="font-style: italic;"><I>Marker Functions</I></span> use the 
 <A href="javascript:void(0);" onclick="BSSCPopup('Marker_Funct._text0.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >active 
 marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a5');
//--></script> 
 to define the sweep range, scale the diagram and introduce an electrical 
 length offset. &nbsp;</p>

<table x-use-null-cells class="whs1">

<tr valign="top" class="whs2">
<td colspan="1" rowspan="1" width="24%" class="whs3">
<p><img src="Marker_Funct_key.gif" width="133px" height="126px" border="0" class="img_whs4"></td>
<td colspan="1" rowspan="1" width="76%" class="whs5">
<p class=Figure><img src="Marker_Funct_menu.gif" width="244px" height="379px" border="0" class="img_whs6"></td></tr>
</table>

<p>The functions in the upper section are also provided in the <span style="font-style: italic;"><I>Search 
 </I></span><span>submenu</span>:</p>

<ul type="disc" class="whs7">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Max"
	id=a36
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Max 
 Search</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a36');
//--></script></I></span> 
 sets the active marker to the<span style="font-style: italic;"> <I></I></span>absolute 
 maximum in the <a href="../Search/Search_Range.htm"
					id=a37
					style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">search 
 range</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a37');
//--></script>. 
 &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Min"
	id=a38
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Min 
 Search</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a38');
//--></script></I></span> 
 sets the active marker to the<span style="font-style: italic;"> <I></I></span>absolute 
 minimum in the search range. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="../Search/Search.htm#Next_Peak"
	id=a39
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Next 
 Peak</a><script type="text/javascript"
									language=JavaScript1.2><!--
kadovInitEffects('a39');
//--></script></I></span> 
 sets the active marker to the next maximum or minimum in the search range, 
 depending on the current search criterion. </p></li>
</ul>

<p>The following functions use the stimulus value of the active marker 
 to define the <A href="javascript:void(0);" onclick="BSSCPopup('Marker_Funct._text1.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >sweep 
 range</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a1');
//--></script>: 
 <span style="font-style: italic;"><I>&nbsp;</I></span></p>

<ul type="disc" class="whs7">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Center"
	id=a22
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Center 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a22');
//--></script></I></span> 
 sets the center of the sweep range equal to the marker value. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Start"
	id=a20
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Start 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a20');
//--></script></I></span> 
 sets the beginning of the sweep range equal to the marker value. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Stop"
	id=a21
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Stop 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a21');
//--></script></I></span> 
 sets the end of the sweep range equal to the marker value. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Span"
	id=a23
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Span 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a23');
//--></script></I></span> 
 sets the span of the sweep range equal to the active delta marker value. 
 </p></li>
</ul>

<p>The following functions use the response value of the active marker 
 to scale the <span class=popupspot>y-axis of the diagram</span><span style="font-style: italic;"><I>: 
 &nbsp;</I></span></p>

<ul type="disc" class="whs7">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Ref__Val_"
	id=a17
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Ref. 
 Value = Marker</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a17');
//--></script></I></span> 
 sets the reference value equal to the marker value. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Max"
	id=a14
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Max 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a14');
//--></script></I></span> 
 sets the upper edge of the diagram equal to the marker value. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Min"
	id=a16
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Min 
 = Marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a16');
//--></script></I></span> 
 sets the lower edge of the diagram equal to the marker value. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Zero_Delay"
	id=a18
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Zero 
 Delay at Marker</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a18');
//--></script></I></span> 
 corrects the<span style="font-style: italic;"> <I></I></span>measurement result 
 by adding or subtracting a constant group delay. &nbsp;</p></li>
</ul>


<hr align="center" width="50%" class="whs8">


<h4><a name=Center></a>Center = Marker</h4>

<p>Sets the <a href="../../Channel/Stimulus/Channel_Stimulus.htm"
				id=a7
				style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">center</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a7');
//--></script> 
 of the sweep range equal to the stimulus value of the <A href="javascript:void(0);" onclick="BSSCPopup('Marker_Funct._text2.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >active 
 marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a8');
//--></script>, 
 leaving the span unchanged. The active marker appears in the center of 
 the diagram. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs9"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions"
	id=a27
	style="x-condition: OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a27');
//--></script> 
 </p>

<table x-use-null-cells class="whs1">

<tr valign="top" class="whs2">
<td colspan="1" rowspan="1" width="24%" class="whs10">
<p class="whs11">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs12">
<p class="whs13"><a href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#FUNCtion_CENTer"
	id=A35
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:CENTer</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A35');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs8">


<h4><a name=Start></a>Start = Marker</h4>

<p>Sets the beginning (<a href="../../Channel/Stimulus/Channel_Stimulus.htm"
							id=a2
							style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">start</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a2');
//--></script>) 
 of the sweep range equal to the stimulus value of the <A href="javascript:void(0);" onclick="BSSCPopup('Marker_Funct._text3.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >active 
 marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a6');
//--></script>, 
 leaving the end (stop) value unchanged. The active marker appears at the 
 left edge of the diagram. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs9"></span> 
 <a HREF="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions" id="A25" style="x-condition: OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A25');
//--></script> 
 </p>

<table x-use-null-cells class="whs1">

<tr valign="top" class="whs2">
<td colspan="1" rowspan="1" width="24%" class="whs10">
<p class="whs11">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs12">
<p class="whs13"><a HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#FUNCTion_STARt"
	id=A33
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:STARt</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A33');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs8">


<h4><a name=Stop></a>Stop = Marker</h4>

<p>Sets the end (<a href="../../Channel/Stimulus/Channel_Stimulus.htm"
					id=a3
					style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">stop</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a3');
//--></script>) 
 of the sweep range equal to the stimulus value of the <A href="javascript:void(0);" onclick="BSSCPopup('Marker_Funct._text4.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >active 
 marker</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a4');
//--></script>, 
 leaving the beginning (start) unchanged. The active marker appears at 
 the right edge of the diagram. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs9"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions" id="a26" style="x-condition: OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a26');
//--></script> 
 </p>

<table x-use-null-cells class="whs1">

<tr valign="top" class="whs2">
<td colspan="1" rowspan="1" width="24%" class="whs10">
<p class="whs11">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs12">
<p class="whs13"><a HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#FUNCtion_STOP"
	id=A34
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:STOP</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A34');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs8">


<h4><a name=Span></a>Span = Marker</h4>

<p>Sets the <a href="../../Channel/Stimulus/Channel_Stimulus.htm"
				id=a9
				style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">span</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a9');
//--></script> 
 of the sweep range equal to the absolute value of the first coordinate 
 of the active delta marker, i.e. to the difference between the delta marker 
 and the reference marker positions. The function is available only if 
 the active marker is in <a href="../Marker/Marker.htm#Delta_Mode"
							id=a24
							style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Delta 
 Mode</a><script type="text/javascript"
									language=JavaScript1.2><!--
kadovInitEffects('a24');
//--></script>. 
 The reference marker appears at the right, the delta marker at the left 
 edge of the diagram or vice versa, depending on which of the two markers 
 has the smaller stimulus value. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs9"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions" id="a28" style="x-condition: OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a28');
//--></script> 
 </p>

<hr align="center" width="50%" class="whs8">


<h4><a name=Ref__Val_></a>Ref. Value = Marker</h4>

<p>Sets the <a href="../Scale/Trace_-_Scale.htm#Ref_Value"
				id=a12
				style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">reference 
 value</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a12');
//--></script> 
 equal to the response value of the active marker, leaving the values of 
 the vertical divisions <span style="font-style: italic;"><I>(<a href="../Scale/Trace_-_Scale.htm#Scale_Div"
	id=a13
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Scale 
 Div.</a><script type="text/javascript"
									language=JavaScript1.2><!--
kadovInitEffects('a13');
//--></script>) 
 </I></span>unchanged. &nbsp;</p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs9"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions"
	id=a31
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a31');
//--></script> 
 </p>

<hr align="center" width="50%" class="whs8">


<h4><a name=Max></a>Max = Marker</h4>

<p>Sets the upper edge of the diagram equal to the response value of the 
 active marker, leaving the values of the vertical divisions <span style="font-style: italic;"><I>(<a 
 href="../Scale/Trace_-_Scale.htm#Scale_Div"
	id=a10
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Scale 
 Div.</a><script type="text/javascript"
									language=JavaScript1.2><!--
kadovInitEffects('a10');
//--></script>) 
 </I></span>unchanged. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs14"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions" id="a29" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 marker functions for diagram scaling</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a29');
//--></script> 
 </p>

<hr align="center" width="50%" class="whs8">


<h4><a name=Min></a>Min = Marker</h4>

<p>Sets the lower edge of the diagram equal to the response value of the 
 active marker, leaving the values of the vertical divisions <span style="font-style: italic;"><I>(<a 
 href="../Scale/Trace_-_Scale.htm#Scale_Div"
	id=a11
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Scale 
 Div.</a><script type="text/javascript"
									language=JavaScript1.2><!--
kadovInitEffects('a11');
//--></script>) 
 </I></span>unchanged. </p>

<p class=Linkline
	style="x-condition: OLH;"><span class=dropspot><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs14"></span> 
 <a href="../../../Getting_Started/Basic_Tasks/Scaling_Diagrams.htm#Using_Marker_Functions" id="a30" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
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<h4><a name=Zero_Delay></a>Zero Delay at Marker</h4>

<p>Corrects the<span style="font-style: italic;"> <I></I></span>measurement result 
 by adding or subtracting a constant group delay. This function must be 
 applied to a trace which is displayed in <a href="../Format/Trace_Format.htm#Delay"
											id=a19
											style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">group 
 delay</a><script type="text/javascript"
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 format. The trace is shifted in vertical direction so that the delay at 
 the marker position vanishes. </p>

<p>The delay represents the propagation time of the wave across the DUT, 
 so this operation corresponds to a electrical length compensation, i.e. 
 to a shift of the reference plane by adding to or subtracting from the 
 test port a simulated lossless transmission line of variable length. The 
 correction must be carried out on the <span style="font-style: italic;"><I>Delay 
 </I></span>trace but has an impact on all trace formats. </p>

<p class=Linkline><span class=dropspot>A standard application of </span><span 
 class=dropspot
	style="font-style: italic;"><I>Zero Delay at Marker</I></span><span class=dropspot> 
 is correction of the constant delay caused by the interconnecting cables 
 between the analyzer test ports and the DUT (line stretch). </span></p>

<p class=Note><img src="../../../small_images/note.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs15"> The <span class=dropspot
										style="font-style: italic;"><I>Zero 
 Delay at Marker</I></span><span class=dropspot> function modifies the </span><span 
 class=dropspot
	style="font-style: italic;"><I><a HREF="../../Channel/Offset/Channel_-_Offset.htm"
									id=A32
									style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Offset</a><script 
 type="text/javascript"
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 class=dropspot> parameters and therefore influences the entire channel. 
 </span></p>

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