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<h4>Bandfilter &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,'','Marker','../Marker/Marker.htm','Search','Search.htm');return false;" title="Related Topics"><img src="../../../ss_btn_related_topics.gif" border=0 height=20 width=96 alt="Related Topics"></a>


 </h4>

<p>Opens a submenu to search for trace segments with a bandpass or bandstop 
 shape and determine characteristic filter parameters. </p>

<p class=Dropdownline><span style="color: #ff0000;"><font color=red ><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"></font></span><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a30" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandfilter 
 search and filter parameters</a><script type="text/javascript"
															language=JavaScript1.2><!--
kadovInitEffects('a30');
//--></script></p>

<div class="droptext" id="POPUP243165315" style="display: 'none'; " x-ss-type="dropdown">
 <p>Bandpass and bandstop regions can be described with the same parameter 
 set: </p>
 <ul type="disc" class="whs2">
  <li class=kadov-p-CList>
  <p class=List>A bandpass region contains a 
 local maximum around which the magnitude of the trace falls off by more 
 than a specified <span style="font-style: italic;"><I>x dB Bandwidth</I></span>. 
 </p></li>
  <li class=kadov-p-CList>
  <p class=List>A bandstop region contains a 
 local minimum around which the magnitude of the trace increases by more 
 than a specified <span style="font-style: italic;"><I>x dB Bandwidth</I></span>. 
 &nbsp;</p></li>
 </ul>
 <p>The analyzer locates bandpass and bandstop regions and determines their 
 position <span style="font-style: italic;"><I>(Center </I></span>frequency) and 
 shape <span style="font-style: italic;"><I>(Bandwidth, LBE, UBE</I></span>, Quality 
 factor <span style="font-style: italic;"><I>Q</I></span>; see <span style="font-style: italic;"><I><a 
 href="Bandfilter.htm#Show_Results"
	id=a31
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Show 
 Results</a>).</I></span> 
 For a meaningful definition of the <span style="font-style: italic;"><I>x 
 dB Bandwidth </I></span>criterion, the trace format must be <span style="font-style: italic;"><I>dB 
 Mag. </I></span></p>
</div>
<p class=Figure><img src="Bandfilter_menu.gif" width="413px" height="417px" border="0" class="img_whs3"></p>

<ul type="disc" class="whs2">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Bandpass_Search"
	id=a8
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandpass 
 Search Ref to Max</a><script type="text/javascript"
													language=JavaScript1.2><!--
kadovInitEffects('a8');
//--></script></I></span> 
 activates the search for a bandpass region in the active trace, starting 
 at the absolute maximum of the active trace within the search range. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Bandstop_Search"
	id=a9
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandstop 
 Search</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a9');
//--></script></I></span> 
 activates the search for a bandstop region in the active trace, starting 
 at the absolute minimum of the active trace within the search range. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List
								style="font-style: italic;"><a href="Bandfilter.htm#Tracking"
	id=A12
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandfilter 
 Tracking</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A12');
//--></script><span 
 style="font-style: normal;"> causes the bandfilter search to be repeated 
 after each sweep.</span> &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a 
 href="#Level"
	id=a10
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">x dB 
 Bandwidth...</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('a10');
//--></script></I></span> 
 sets the level defining the filter bandwidth. &nbsp;</p></li>
	
	<li class=kadov-p-CList><p class=List
								style="font-style: italic;"><a href="#Search_Range"
	id=a11
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Search 
 Range...</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a11');
//--></script><span 
 style="font-style: normal;"> confines the search to a subrange of the 
 sweep.</span> </p></li>
	
	<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
		class=kadov-p-CList><p class=List
								style="font-style: italic; color: #000000;"><a 
 href="Bandfilter.htm#Show_Results"
	id=A27
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Search 
 Result Off</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('A27');
//--></script><span 
 style="font-style: normal;"> hides the display of the bandfilter parameters 
 in the diagram area. </span></p></li>
	
	<li class=kadov-p-CList><p class=List><a href="#Bandpass_Search"
											id=a17
											style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandpass 
 Search Ref to Marker</a><script type="text/javascript"
													language=JavaScript1.2><!--
kadovInitEffects('a17');
//--></script> 
 activates the search for a bandpass region in the active trace, starting 
 at the position of the active marker. </p></li>
</ul>

<p class=Note><span style="font-style: italic;"><I><img src="../../../small_images/note.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs4"> </I></span>Bandfilter 
 mode can be selected for a broad range of measured quantities (<a href="../Measure/Trace_-_Measure.htm"
	id=a1
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Trace 
 &#8211; Measure</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a1');
//--></script>), 
 provided that the display format is <span style="font-style: italic;"><I><a 
 href="../Format/Trace_Format.htm#dB_Mag"
	id=a2
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">dB Mag</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a2');
//--></script></I></span>. 
 To obtain real filter parameters, the measured quantity must be a transmission 
 S-parameter and a frequency sweep must be performed. For other quantities 
 (e.g reflection parameters), the <span style="font-style: italic;"><I>Bandfilter 
 </I></span>functions are still useful to analyze general trace properties. 
 In some display formats (e.g. <span style="font-style: italic;"><I>Phase) 
 </I></span>the bandfilter search is disabled. </p>


<hr align="center" width="50%" class="whs5">


<h5><a name=Bandpass_Search></a>Bandpass Search Ref to Max</h5>

<p>Activates the search for a bandpass region on the active trace and activates 
 bandfilter <span style="font-style: italic;"><I><a href="Bandfilter.htm#Tracking"
												id=A42
												style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Tracking</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A42');
//--></script></I></span>. 
 A bandpass region is the tallest <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text0.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >peak</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a22');
//--></script> 
 in the <a href="#Search_Range"
			id=a14
			style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">search 
 range</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a14');
//--></script> 
 with a minimum <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text1.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >excursion</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a3');
//--></script> 
 specified by means of the <span style="font-style: italic;"><I><a href="#Level"
	id=a4
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">x dB 
 Bandwidth</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('a4');
//--></script></I></span> 
 parameter. </p>

<p>When <span style="font-style: italic;"><I>Bandpass Search </I></span>is activated 
 the analyzer uses (or creates) the four markers <span style="font-style: italic;"><I>Mkr 
 1 </I></span>to <span style="font-style: italic;"><I>Mkr 4 </I></span>to locate the 
 <a class="dropspot" href="javascript:kadovTextPopup(this)" id="a52" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">bandpass 
 region:</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a52');
//--></script> 
 </p>

<div class="droptext" id="POPUP243145012" style="display: 'none'; " x-ss-type="dropdown">
 <p class=Figure><img src="Bandpass.gif" width="248px" height="221px" border="0" class="img_whs6"></p>
 <ul type="disc" class="whs2">
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 1</I></span> indicates the maximum of the peak. </p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 2</I></span> indicates the point on the left edge of the peak where the trace 
 value is equal to the maximum minus <span style="font-style: italic;"><I>x 
 dB Bandwidth.</I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 3</I></span> indicates the point on the right edge of the peak where the trace 
 value is equal to the maximum minus <span style="font-style: italic;"><I>x 
 dB Bandwidth.</I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 4</I></span> indicates the center of the peak, calculated as the arithmetic 
 mean value of the <span style="font-style: italic;"><I>LBE </I></span>and <span 
 style="font-style: italic;"><I>UBE </I></span>positions<span style="font-style: italic;"><I>.</I></span></p></li>
 </ul>
 <p>For a symmetric peak, the positions of <span style="font-style: italic;"><I>Max 
 </I></span>and<span style="font-style: italic;"><I> Center </I></span>coincide. </p>
</div>
<p>The band filter search results are displayed in the bandfilter <a href="Bandfilter.htm#Show_Results"
	id=a53
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">info 
 field</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a53');
//--></script>. 
 </p>

<p><img src="../../../small_images/tip.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs7"> To search for a bandpass region in the vicinity of the 
 active marker, use <a href="Bandfilter.htm#Bandpass_Search_Marker"
						id=A57
						style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandpass 
 Search Ref to Marker</a><script type="text/javascript"
													language=JavaScript1.2><!--
kadovInitEffects('A57');
//--></script>.</p>

<table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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#BFILTer_MODE"
													id=A24
													style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:BWIDth:MODE 
 BPASs</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A24');
//--></script><a 
 HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#EXECute"
	id=A33
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:EXECute BFILter</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A33');
//--></script>&nbsp;</td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Bandstop_Search></a>Bandstop Search</h5>

<p>Activates the search for a bandstop region on the active trace and activates 
 bandfilter <span style="font-style: italic;"><I><a href="Bandfilter.htm#Tracking"
												id=a43
												style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Tracking</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a43');
//--></script></I></span>. 
 A bandstop region is the lowest <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text2.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >peak</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a23');
//--></script> 
 (local minimum) in the <a href="#Search_Range"
							id=a16
							style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">search 
 range</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a16');
//--></script> 
 with a minimum <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text3.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >excursion</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a5');
//--></script> 
 that is specified by means of the <span style="font-style: italic;"><I><a 
 href="#Level"
	id=a6
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">x dB 
 Bandwidth</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('a6');
//--></script></I></span> 
 parameter. </p>

<p>When <span style="font-style: italic;"><I>Bandstop Search </I></span>is activated 
 the analyzer uses (or creates) the four markers <span style="font-style: italic;"><I>Mkr 
 1 </I></span>to <span style="font-style: italic;"><I>Mkr 4 </I></span>to locate the 
 <a class="dropspot" href="javascript:kadovTextPopup(this)" id="a56" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">bandstop 
 region:</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a56');
//--></script> 
 </p>

<div class="droptext" id="POPUP174157205" style="display: 'none'; " x-ss-type="dropdown">
 <p class=Figure><img src="Bandstop.gif" width="213px" height="216px" border="0" class="img_whs14"></p>
 <ul type="disc" class="whs2">
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 1</I></span> indicates the minimum of the peak. </p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 2 </I></span>indicates the point on the left edge of the peak where the trace 
 value is equal to the minimum plus <span style="font-style: italic;"><I>x 
 dB Bandwidth.</I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 3 </I></span>indicates the point on the right edge of the peak where the trace 
 value is equal to the minimum plus <span style="font-style: italic;"><I>x 
 dB Bandwidth.</I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Mkr 
 4</I></span> indicates the center of the peak, calculated as the arithmetic 
 mean value of the <span style="font-style: italic;"><I>LBE </I></span>and <span 
 style="font-style: italic;"><I>UBE </I></span>positions<span style="font-style: italic;"><I>.</I></span></p></li>
 </ul>
 <p>For a symmetric peak, the positions of <span style="font-style: italic;"><I>Max 
 and Center </I></span>coincide. </p>
</div>
<p>The band filter search results are displayed in the bandfilter <a href="Bandfilter.htm#Show_Results"
	id=a54
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">info 
 field</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a54');
//--></script>. 
 </p>

<table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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="whs15"><a HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#BFILTer_MODE"
	id=A25
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:BWIDth:MODE 
 BSTOP</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A25');
//--></script><a 
 href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#EXECute"
	id=a34
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:EXECute BFILter</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a34');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Tracking></a>Bandfilter Tracking</h5>

<p class=nohead>Causes the bandfilter search to be repeated after each 
 sweep: When tracking mode is active the markers typically change their 
 horizontal and their vertical positions as the measurement goes on. &nbsp;</p>

<p class=nohead>Tracking for the different bandfilter search modes is enabled 
 or disabled in a selection box. Selecting a search mode for tracking also 
 activates this mode. &nbsp;</p>

<p class=Figure><img src="Bandfilter_Tracking_box.jpg" width="247px" height="116px" border="0" class="img_whs16"></p>

<p class=nohead><span style="font-style: italic;"><I>Tracking </I></span><span>is 
 a toggle function: Selecting the function repeatedly switches the tracking 
 mode on and off. </span>&nbsp;</p>

<table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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#EXECute"
													id=a35
													style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:EXECute 
 BFILter</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a35');
//--></script><a 
 HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#SEARch_TRACking"
	id=A36
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:SEARch:TRACking</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A36');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Level></a>x dB Bandwidth</h5>

<p>Opens the numeric entry bar for the minimum <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text4.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >excursion</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a7');
//--></script> 
 of the bandpass and bandstop <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text5.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >peaks</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a18');
//--></script>. 
 </p>

<p class=Figure><img src="x_dB_Bandwidth.gif" width="388px" height="23px" border="0" class="img_whs17"></p>

<ul type="disc" class="whs2">
	
	<li class=kadov-p-CList><p class=List>A bandpass peak must fall off 
 on both sides by the specified <span style="font-style: italic;"><I>x dB 
 Bandwidth </I></span>to be considered a valid peak. </p></li>
	
	<li class=kadov-p-CList><p class=List>A bandstop peak must increase 
 on both sides by the specified <span style="font-style: italic;"><I>x dB 
 Bandwidth </I></span>to be considered a valid peak. </p></li>
</ul>

<table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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="whs15"><a HREF="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#BFILter_BWIDth"
	id=A26
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:BWIDth 
 &lt;Level&gt;</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('A26');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Search_Range></a> Search Range...</h5>

<p>Opens the <span style="font-style: italic;"><I>Search Range Dialog </I></span>to 
 confine the bandfilter search to a subrange of the sweep. &nbsp;</p>

<p class=Figure
	style="x-condition: Webhelp_Print;"><img src="Search_range_bandfilter.jpg" width="206px" height="202px" border="0" class="img_whs18"></p>

<p>It is possible to define and store up to ten different search ranges 
 for each trace. The bandfilter search is performed using the markers <span 
 style="font-style: italic;"><I>Mkr 1, ..., Mkr 4, </I></span><span>irrespective 
 of the selected search range.</span> &nbsp;</p>

<ul type="disc" class="whs2">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a class="expandspot" href="javascript:kadovTextPopup(this)" id="a19" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Search 
 Range</a><span class=expandtext style="display: 'none';" id=POPUP170635273 >   Selects a search range for the bandfilter search. <span style="font-style: italic;"><I>Full 
 Span </I></span>means that the search range is equal to the <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text6.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >sweep 
 range</a>. 
 Besides, it is possible to store up to 10 customized search ranges. &nbsp;</span><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a19');
//--></script></I></span> 
 </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a class="expandspot" href="javascript:kadovTextPopup(this)" id="a20" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Start</a><span class=expandtext style="display: 'none';" id=POPUP173083350 >   defines the beginning of the search range. <span style="font-style: italic;"><I>Start</I></span> 
 must be smaller than the <span style="font-style: italic;"><I>Stop </I></span><span>value, 
 otherwise the search will not be initiated.</span></span><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a20');
//--></script></I></span> 
 </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a class="expandspot" href="javascript:kadovTextPopup(this)" id="a21" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Stop</a><span class=expandtext style="display: 'none';" id=POPUP174472854 >   defines the end of the search range. <span style="font-style: italic;"><I>Stop</I></span> 
 must be larger than the <span style="font-style: italic;"><I>Start </I></span>value, 
 otherwise the search will not be initiated. </span><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a21');
//--></script></I></span> 
 </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I><a class="expandspot" href="javascript:kadovTextPopup(this)" id="a40" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Range 
 Limit Lines On</a><span class=expandtext style="display: 'none';" id=POPUP173671789 >   displays two vertical lines indicating the <span style="font-style: italic;"><I>Start 
 </I></span><span>and the </span><span style="font-style: italic;"><I>Stop</I></span> 
 value of the current bandfilter search range in the diagram area. This 
 function is enabled as soon as one of the search ranges 1 to 10 is selected. 
 </span><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a40');
//--></script></I></span> 
 </p></li>
</ul>

<p class="whs19"><span style="color: #ff0000;"><font color=red ><span style="color: #ff0000;"><font color=red ><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"></font></span> <span style="color: #000000;"><font color=black ><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a13" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Search 
 range properties</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a13');
//--></script></font></span></font></span></p>

<div class="droptext" id="POPUP174355168" style="display: 'none'; " x-ss-type="dropdown">
 <p>In contrast to the marker properties defined in the <span style="font-style: italic;"><I>Marker 
 </I></span>and <span style="font-style: italic;"><I>Search </I></span>menus, the 
 ten search ranges are valid for the entire setup. This means that, once 
 defined, each of them can be used for any trace in the setup, irrespective 
 of the channel that the trace belongs to. </p>
 <p>The default search range of each new marker is <span style="font-style: italic;"><I>Full 
 Span.</I></span> The analyzer provides greatest flexibility in defining search 
 ranges. In particular, two search ranges may overlap or even be identical. 
 The search is confined to the part of the search range that belongs to 
 the sweep range. </p>
 <p>The following example shows how search ranges can be used to search 
 a trace for several bandpass regions. </p>
 <p><img src="../Search_Range.gif" width="332px" height="203px" border="0" class="img_whs20"></p>
</div><table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<td colspan="1" rowspan="1" width="24%" class="whs21">
<p class="whs11">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs22">
<p class="whs13"><a href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#DOMain_USER"
													id=a38
													style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:DOMain:USER</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a38');
//--></script><a 
 href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#DOMain_USER_STARt"
	id=a28
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:DOMain:USER:STARt</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a28');
//--></script><a 
 href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#DOMain_USER_STOP"
	id=a39
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:DOMain:USER:STOP</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a39');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Show_Results></a> Search Result Off</h5>

<p>Hides the info field with the results of a bandpass or a bandstop search 
 and disables bandfiter <span style="font-style: italic;"><I><a href="Bandfilter.htm#Tracking"
															id=A44
															style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Tracking</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A44');
//--></script></I></span>. 
 The info field is displayed again (and tracking re-enabled) when a new 
 bandfilter search is performed. &nbsp;</p>

<p class=Figure><img src="Bandfilter_parameters.gif" width="419px" height="126px" border="0" class="img_whs23"></p>

<p class=Dropdownline><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a29" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"> Bandfilter parameters</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a29');
//--></script></p>

<div class="droptext" id="POPUP171038932" style="display: 'none'; " x-ss-type="dropdown">
 <p>The info field contains the following search results: &nbsp;</p>
 <ul type="disc" class="whs2">
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Bandwidth</I></span> 
 is the n-dB bandwidth of the bandpass/bandstop region, where n is the 
 selected <span style="font-style: italic;"><I><a href="Bandfilter.htm#Level"
												id=a37
												style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">x 
 dB Bandwidth</a>.</I></span> 
 The bandwidth is equal to the difference between the Upper Bandwidth Edge 
 (UBE) and the Lower Bandwidth Edge (LBE). <span style="font-style: italic;"><I>&nbsp;</I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Center 
 </I></span>is the stimulus frequency where the trace reaches its absolute 
 maximum (minimum) within the bandpass (bandstop) region. </p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Lower 
 Band Edge</I></span> is the closest frequency below the center frequency where 
 the trace is equal to the center value minus n dB<span style="font-style: italic;"><I>. 
 </I></span>&nbsp;</p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Upper 
 Band Edge</I></span> is the closest frequency above the center frequency where 
 the trace is equal to the center value minus n dB<span style="font-style: italic;"><I>. 
 </I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List>The <span style="font-style: italic;"><I>Quality 
 Factor </I></span>is the ratio between the <span style="font-style: italic;"><I>Center 
 </I></span>frequency and the 3-dB <span style="font-style: italic;"><I>Bandwidth; 
 </I></span>it does not depend on the selected <span style="font-style: italic;"><I>x 
 dB Bandwidth. </I></span></p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Loss 
 </I></span>is the loss of the filter at its center frequency and is equal 
 to the response value of marker no. 4. For an ideal bandpass filter the 
 loss is zero (0 dB), for an ideal bandstop filter it is &#8211;<img src="../../../small_images/Infinity.gif" x-maintain-ratio="TRUE" width="16px" height="9px" border="0" class="img_whs24">dB. </p></li>
 </ul>
</div><table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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="whs15"><a href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#BWIDth"
	id=a32
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:BWIDth?</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a32');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<h5><a name=Bandpass_Search_Marker></a>Bandpass Search Ref to Marker</h5>

<p>Activates the search for a bandpass region on the active trace and activates 
 bandfilter <span style="font-style: italic;"><I><a href="Bandfilter.htm#Tracking"
												id=a49
												style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Tracking</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a49');
//--></script></I></span>, 
 starting at the position of the active marker. A bandpass region is the 
 closest <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text7.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >peak</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a50');
//--></script> 
 in the <a href="#Search_Range"
			id=a51
			style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">search 
 range</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a51');
//--></script> 
 with a minimum <A href="javascript:void(0);" onclick="BSSCPopup('Bandfilter_text8.htm');return false;" onMouseOver="if (parseInt(navigator.appVersion) >= 4) BSPSPopupOnMouseOver(event);" class="popupspot" >excursion</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a45');
//--></script> 
 specified by means of the <span style="font-style: italic;"><I><a href="#Level"
	id=a46
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">x dB 
 Bandwidth</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('a46');
//--></script></I></span> 
 parameter. </p>

<p>In contrast to a <span style="font-style: italic;"><I>Bandpass Search Ref 
 to Max,</I></span> the <span style="font-style: italic;"><I>Bandpass Search Ref 
 to Marker </I></span>does not change the position of the active markers. The 
 band filter search results are displayed in the bandfilter <a href="Bandfilter.htm#Show_Results"
	id=A55
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">info 
 field</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A55');
//--></script>. 
 &nbsp;</p>

<p><img src="../../../small_images/tip.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs7"> To search for a bandstop region in the vicinity of the 
 active marker, use <span style="font-style: italic;"><I><a href="Bandfilter.htm#Tracking"
														id=A58
														style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Bandfilter 
 Tracking</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A58');
//--></script> 
 &#8211; Bandstop 
 Search Ref to Marker.</I></span></p>

<table x-use-null-cells class="whs8">

<tr valign="top" class="whs9">
<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#BFILTer_MODE"
													id=a47
													style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:BWIDth:MODE 
 BPRMarker | BSRMarker</a><script type="text/javascript"
														language=JavaScript1.2><!--
kadovInitEffects('a47');
//--></script> 
 <a href="../../../SCPI_Reference/CALCulate/CALCulate_MARKer.htm#EXECute"
	id=a48
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
CALCulate&lt;Chn&gt;:MARKer&lt;Mk&gt;:FUNCtion:EXECute BFILter</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a48');
//--></script>&nbsp;</td></tr>
</table>


<hr align="center" width="50%" class="whs5">


<p class=Linkline
	style="x-condition: OLH;"><a title="Back to top" href="Bandfilter.htm" id="a15" style="x-condition: OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ " onmouseover="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_showtip(this,event,'Back to top');" onmouseout="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_hidetip();"><img src="../../../small_images/baby_up.gif" x-maintain-ratio="TRUE" width="20px" height="23px" border="0" class="img_whs25"></a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('a15');
//--></script></p>

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