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<h5>Balanced and Measured Ports &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,'','Mixed Mode Parameters','../../../System_Overview/Measurement_Parameters/Mixed_Mode_Parameters.htm','Trace - Measure','../../Trace/Measure/Trace_-_Measure.htm','Virtual Transform','Virtual_Transform.htm');return false;" title="Related Topics"><img src="../../../ss_btn_related_topics1.gif" border=0 height=17 width=82 alt="Related Topics"></a>


 </h5>

<p>Opens a dialog to select a balanced port configuration and define reference 
 impedances for balanced ports and to select the measured ports. </p>

<p class=Dropdownline><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a10" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Balanced 
 and Measured Ports</a><script type="text/javascript"
													language=JavaScript1.2><!--
kadovInitEffects('a10');
//--></script></p>

<div class="droptext" id="POPUP255541276" style="display: 'none'; " x-ss-type="dropdown">
 <p>Selecting a balanced port configuration means that one or more pairs 
 of physical test ports are combined to form logical (balanced) ports. 
 &nbsp;</p>
 <p><a HREF="../../../System_Overview/Measurement_Parameters/Balance_-_Unbalance_Conversion.htm" id="a21" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">unbalance-balance 
 conversion</a> 
 is the simulation of one or more unbalance-balance transformers (baluns) 
 integrated in the measurement circuit in order to convert the DUT ports 
 from an unbalanced state into a balanced state and virtually separate 
 the differential and common mode signals. The analyzer measures the unbalanced 
 state but converts the results and calculates mixed mode parameters, e.g. 
 <a href="../../Trace/Measure/Trace_-_Measure.htm#Mixed_mode_S_parameters"
	id=A17
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">mixed 
 mode S-parameters</a>. 
 The balanced ports of the DUT are directly connected to the analyzer ports 
 and no physical transformer is needed. &nbsp;</p>
 <p>Measurements do not necessarily require all of the physical and logical 
 ports of the network analyzer. To save measurement time, it is recommended 
 to define the ports that are actually used in the current test setup <span 
 style="font-style: italic;"><I>(<a href="Balanced_Ports.htm#Define_Measured_Ports"
								id=a20
								style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Define 
 Measured Ports</a>)</I></span>. 
 Unused ports will not be considered for the calculation of mixed mode, 
 Z- and Y-parameters. &nbsp;</p>
</div>
<p class=Figure
	style="x-condition: Webhelp_Print, ZVB_A_I;"><img src="Balanced_Ports.jpg" width="408px" height="316px" border="0" class="img_whs2"></p>

<p>In the<span style="x-condition: ZVB_A_I;"> 
 four</span> tabs of the <span style="font-style: italic;"><I>Balanced and 
 Measured Ports </I></span>dialog it is possible to </p>

<ul type="disc" class="whs3">
	
	<li style="x-condition: ZVB_A_I; /*begin!kadov{{*/ x-condition: ZVB_A_I; /*}}end!kadov*/ "
		class=kadov-p-CList><p class=List
								style="x-condition: ZVB_A_I;">Select one 
 of the predefined balanced port configurations <span style="font-style: italic;"><I>(<a 
 href="Balanced_Ports.htm#Predefined_Configurations"
	id=A3
	style="x-condition: ZVB_A_I; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Predefined 
 Configs</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('A3');
//--></script>).</I></span> 
 </p></li>
	
	<li class=kadov-p-CList><p class=List>Define a logical port based on 
 two physical ports and independent reference impedances for the calculation 
 of common mode and differential mode parameters <span style="font-style: italic;"><I>(<a 
 href="Balanced_Ports.htm#Define"
	id=A5
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Def. 
 Balanced Port</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('A5');
//--></script>)</I></span>. 
 </p></li>
	
	<li class=kadov-p-CList><p class=List>Dissolve a single logical port 
 so that the two involved ports are again used as physical ports <span 
 style="font-style: italic;"><I>(<a href="Balanced_Ports.htm#Dissolve"
								id=A6
								style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Dissolve 
 Bal. Port</a><script type="text/javascript"
											language=JavaScript1.2><!--
kadovInitEffects('A6');
//--></script>)</I></span>. 
 </p></li>
	
	<li class=kadov-p-CList><p class=List>Select the ports that can be 
 used for the measurement <span style="font-style: italic;"><I>(<a href="Balanced_Ports.htm#Define_Measured_Ports"
	id=A11
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Define 
 Measured Ports</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('A11');
//--></script>).</I></span> 
 </p></li>
</ul>

<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_whs4"></span> 
 <a HREF="../../../Measurement_Examples/Port_Conversion/Balanced_Ports.htm" id="A1" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 balanced ports</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('A1');
//--></script> 
 </p>


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


<h5 class=Dropdownline
	style="x-condition: ZVB_A_I;"><a name=Predefined_Configurations></a>Predefined 
 Configs </h5>

<p class="whs6">The <span style="font-style: italic;"><I>Predefined 
 Configs </I></span>tab of the <span style="font-style: italic;"><I>Balanced and 
 Measured Ports </I></span>dialog provides the most commonly used balanced 
 port configurations for the analyzer. </p>

<p class=Figure
	style="x-condition: Webhelp_Print, ZVB_A_I;"><img src="Balanced_Ports.jpg" width="408px" height="316px" border="0" class="img_whs2"></p>

<p class="whs6">The port configurations are arranged in 
 a scrollable list and selected with a mouse click<span style="font-style: italic;"><I>. 
 </I></span>The resulting port number assignment is shown on the left-hand 
 side of the <span style="font-style: italic;"><I>Balanced and Measured Ports 
 </I></span>dialog and in the <span style="font-style: italic;"><I><a href="Channel_Mode.htm#Port_Configuration"
	id=a16
	style="x-condition: ZVB_A_I; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Port 
 Configuration</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a16');
//--></script></I></span> 
 dialog. </p>

<p class=Dropdownline
	style="x-condition: ZVB_A_I;"><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a4" style="x-condition: ZVB_A_I; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Predefined 
 Configurations</a><script type="text/javascript"
												language=JavaScript1.2><!--
kadovInitEffects('a4');
//--></script></p>

<div class="droptext" id="POPUP325943537" style="display: 'none'; " x-ss-type="dropdown">
 <p>The number of type of predefined configurations depends on the port 
 number of the analyzer. </p>
 <p>The predefined configurations comprise the fully single-ended (unbalanced) 
 case, where the logical ports correspond to the physical ports, and all 
 balanced configurations where two adjacent physical ports are connected 
 to a logical port. In addition configurations where one or more ports 
 are excluded from the measurement are provided (see <span style="font-style: italic;"><I><a 
 HREF="Channel_Mode.htm#Measured_Ports"
	id=a12
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Measured 
 Ports</a>)</I></span>. 
 &nbsp;</p>
 <p><span style="font-weight: bold;"><B>Example:</B></span> 4-port analyzer</p>
 <ul type="disc" class="whs3">
  <li class=kadov-p-CList>
  <p class=List>Fully unbalanced: Physical ports 
 no. 3, 1, 4, 2 connected to logical ports (DUT ports) 3, 1, 4, 2. </p></li>
  <li class=kadov-p-CList>
  <p class=List>One balanced port: </p></li>
 </ul>
 <p class=List
	style="margin-left: 28pt;">a) Physical ports no. 3 and 1 connected 
 to logical port 1, remaining ports unbalanced.<br>b) Physical ports no. 4 and 2 connected to logical port 2, remaining ports 
 unbalanced.</p>
 <ul type="disc" class="whs3">
  <li class=kadov-p-CList>
  <p class=List>Two balanced ports: Physical 
 ports no. 3 and 1 connected to logical port 1, physical ports no. 4 and 
 2 connected to logical port 2. </p></li>
  <li class=kadov-p-CList>
  <p class=List>In additional configurations 
 one, two or three ports (marked as <img src="Unmeasured_Port.gif" width="20px" height="19px" border="0" class="img_whs7">) are excluded from the 
 measurement. &nbsp;</p></li>
 </ul>
 <p><img src="../../../small_images/tip.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs8">To define a non standard configuration or use different 
 port impedances, select the <span style="font-style: italic;"><I><a href="Balanced_Ports.htm#Define"
	id=a7
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Def. 
 Balanced Port</a></I></span>tab. </p>
</div>
<p class=Linkline
	style="x-condition: OLH, ZVB_A_I;"><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs4"> <a HREF="../../../Measurement_Examples/Port_Conversion/Balanced_Ports.htm#Predefined_Port_Config" id="A8" style="x-condition: ZVB_A_I, OLH; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 predefined port configurations</a><script type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('A8');
//--></script> 
 </p>

<table x-use-null-cells class="whs9">

<tr valign="top" class="whs10">
<td colspan="1" rowspan="1" width="24%" class="whs11">
<p class="whs12">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs13">
<p class="whs14"><a href="../../../SCPI_Reference/SOURce/SOURce_Ch.htm#LPORt" id="a26" style="x-condition: ZVB_A_I; /*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">SOURce&lt;Ch&gt;:LPORt&lt;log_port&gt; 
 &nbsp;&lt;phys_port1&gt;,&lt;phys_port2&gt;</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a26');
//--></script><span 
 style="font-family: Verdana, sans-serif;"><br>
(no extra command for predefined configurations) </span></td></tr>
</table>


<hr align="center" width="50%" class="whs15">


<h5 class=Dropdownline><a name=Define></a>Def. Balanced Port </h5>

<p>The <span style="font-style: italic;"><I>Def. Balanced Port </I></span><span>tab 
 of the </span><span style="font-style: italic;"><I>Balanced and Measured 
 Ports </I></span><span>dialog defines new balanced port configurations and 
 reference impedances for common and differential mode.</span> </p>

<p class=Figure
	style="x-condition: Webhelp_Print;"><img src="Define.jpg" width="459px" height="291px" border="0" class="img_whs16"></p>

<p>In principle, it is possible to combine any pair of two physical analyzer 
 ports. An n-port analyzer supports a maximum of n/2 (n even) or (n &#8211; 1)/2 (n odd) 
 logical ports. </p>

<ul type="disc" class="whs3">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Physical 
 Port Numbers</I></span> provides two drop-down lists to select a pair of different 
 physical ports to be connected to the logical (DUT) port. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Reference 
 Impedances</I></span> provides input fields for the differential and common 
 mode impedances. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Select 
 Logical Port Number</I></span> shows the current port configuration. Clicking 
 the table cells updates the left <span style="font-style: italic;"><I>Physical 
 Port Numbers </I></span><span>table and makes it easier to define new logical 
 ports.</span> </p></li>
</ul>

<p class=Dropdownline><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a19" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Reference 
 impedance settings</a><script type="text/javascript"
													language=JavaScript1.2><!--
kadovInitEffects('a19');
//--></script></p>

<div class="droptext" id="POPUP183978997" style="display: 'none'; " x-ss-type="dropdown">
 <p>The default reference impedance for a physical port is equal to the 
 reference impedance of the connector type assigned to the port but can 
 be defined as a complex value. For balanced ports it is possible to define 
 separate complex reference impedances for differential and for common 
 mode. </p>
 <p class=Figure><img src="Impedances.gif" width="562px" height="218px" border="0" class="img_whs17"></p>
 <p>The default values for the balanced port reference impedances are derived 
 from the (real) default reference impedance of the physical analyzer ports 
 (Z<span style="vertical-align: Sub;">0</span> = 50 <span style="font-family: Symbol, serif;">W):</span></p>
 <ul type="disc" class="whs3">
  <li class=kadov-p-CList>
  <p class=List>The default value for the differential 
 mode is Z<span style="vertical-align: Sub;">0d</span> = 100 <span style="font-family: Symbol, serif;">W</span> 
 = 2*Z<span style="vertical-align: Sub;">0</span>.</p></li>
  <li class=kadov-p-CList>
  <p class=List><span class=dropspot>The default 
 value for the common mode is Z</span><span class=dropspot
											style="vertical-align: Sub;">0c</span><span 
 class=dropspot> = 25 </span><span style="font-family: Symbol, serif;">W</span><span 
 class=dropspot> = Z</span><span class=dropspot
								style="vertical-align: Sub;">0</span><span 
 class=dropspot>/2</span><span class=dropspot>.</span></p></li>
 </ul>
</div>
<p class=Linkline
	style="x-condition: OLH;"><img src="../../../small_images/helpwoval3.gif" x-maintain-ratio="TRUE" width="42px" height="18px" border="0" class="img_whs18"> <a HREF="../../../Measurement_Examples/Port_Conversion/Balanced_Ports.htm#Define_Port_Config" id="A9" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Using 
 your own port configurations</a><script type="text/javascript"
															language=JavaScript1.2><!--
kadovInitEffects('A9');
//--></script> 
 </p>

<table x-use-null-cells class="whs19">

<tr valign="top" class="whs10">
<td colspan="1" rowspan="1" width="24%" class="whs11">
<p class="whs12">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs13">
<p class="whs20"><a href="../../../SCPI_Reference/SOURce/SOURce_Ch.htm#LPORt" id="a23" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">SOURce&lt;Ch&gt;:LPORt&lt;log_port&gt; 
 &nbsp;&lt;phys_port1&gt;,&lt;phys_port2&gt;</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a23');
//--></script><a 
 href="../../../SCPI_Reference/SENSe/SENSE_LPORt.htm#ZCOMmon"
	id=a27
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
SENSe:LPORT&lt;log_port&gt;:ZCOMmon &lt;real&gt; [,&lt;imaginary]</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a27');
//--></script><a 
 href="../../../SCPI_Reference/SENSe/SENSE_LPORt.htm#ZDIFferent"
	id=a28
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
SENSe:LPORT&lt;log_port&gt;:ZDIFferent &lt;real&gt; [,&lt;imaginary]</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a28');
//--></script> 
 </td></tr>
</table>


<hr align="center" width="50%" class="whs15">


<h5 class=Dropdownline><a name=Dissolve></a>Dissolve Bal. Port</h5>

<p>The <span style="font-style: italic;"><I>Dissolve </I></span>tab of the <span 
 style="font-style: italic;"><I>Balanced and Measured Ports </I></span>dialog 
 reestablishes a single-ended (unbalanced) port configuration where logical 
 ports correspond to (single) physical ports. </p>

<p class=Figure
	style="x-condition: Webhelp_Print;"><img src="Dissolve.jpg" width="409px" height="317px" border="0" class="img_whs21"></p>

<ul type="disc" class="whs3">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Select 
 Logical Port Number</I></span> shows the current port configuration. Selecting 
 a <span style="font-style: italic;"><I>Logical Port # </I></span>and<span style="font-style: italic;"> 
 <I></I></span>clicking <span style="font-style: italic;"><I>Dissolve </I></span>reestablishes 
 a single-ended (unbalanced) port configuration. </p></li>
</ul>

<table x-use-null-cells class="whs19">

<tr valign="top" class="whs10">
<td colspan="1" rowspan="1" width="24%" class="whs11">
<p class="whs12">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs13">
<p class="whs20"><a href="../../../SCPI_Reference/SOURce/SOURce_Ch.htm#LPORt_CLEar" id="a24" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">SOURce&lt;Ch&gt;:LPORt&lt;log_port&gt;:CLEar 
 [ALL]</a><script type="text/javascript"
										language=JavaScript1.2><!--
kadovInitEffects('a24');
//--></script></td></tr>
</table>


<hr align="center" width="50%" class="whs15">


<h5 class=Dropdownline><a name=Define_Measured_Ports></a>Define Measured 
 Ports</h5>

<p>The <span style="font-style: italic;"><I>Define Measured Ports </I></span>tab 
 of the <span style="font-style: italic;"><I>Balanced and Measured Ports </I></span>dialog 
 selects the ports that are used for the measurement. </p>

<p class=Dropdownline><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a70" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><font 
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	color=#008000>Measured Ports</font></a><script 
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<div class="droptext" id="POPUP180820467" style="display: 'none'; " x-ss-type="dropdown">
 <p>Measurements do not necessarily require all of the physical or logical 
 ports of the network analyzer. To save measurement time, it is recommended 
 to restrict the measurement to the ports that are actually needed. Note 
 that the analyzer will actually perform a measurement at each of the measured 
 ports. </p>
 <p>Unused ports will not be considered for the calculation of mixed mode, 
 Z- and Y-parameters. </p>
 <p>The measured ports are indicated in the first column of the <span style="font-style: italic;"><I><a 
 HREF="Channel_Mode.htm#Port_Configuration"
	id=a13
	style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Port 
 Configuration</a></I></span>table <span style="font-style: italic;"><I>(Meas).</I></span> The ports 
 can be either source ports or receive ports. &nbsp;</p>
</div>
<p class=Figure
	style="x-condition: Webhelp_Print;"><img src="Define_Measured_Ports.jpg" width="408px" height="317px" border="0" class="img_whs22"></p>

<ul type="disc" class="whs3">
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Port 
 Configuration</I></span> shows the current physical and balanced ports. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Range 
 of Measured Ports </I></span>shows the continuous range of ports measured. 
 Selecting another <span style="font-style: italic;"><I>First Port </I></span><span>or 
 </span><span style="font-style: italic;"><I>Last Port </I></span><span>changes 
 the range. To avoid ambiguities the selected ports are always logical 
 ports.</span> </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Define 
 </I></span>activates the current selection. </p></li>
	
	<li class=kadov-p-CList><p class=List><span style="font-style: italic;"><I>Simultaneous 
 Measurement of Port Groups </I></span>activates the definition of one or more 
 groups of ports that can be used for parallel measurements. </p></li>
</ul>

<p class=Note><img src="../../../small_images/note.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs23"> If a frequency-converting mode is active, 
 port groups can not be measured in parallel. </p>

<p class=Dropdownline><img src="../../../small_images/info_red.jpg" x-maintain-ratio="TRUE" width="32px" height="37px" border="0" class="img_whs1"><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a15" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Simultaneous 
 Measurement of Port Groups</a><script type="text/javascript"
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<div class="droptext" id="POPUP253428905" style="display: 'none'; " x-ss-type="dropdown">
 <p>A port group is a continuous range of measured ports which is labeled 
 with a capital letter. The analyzer can measure several port groups in 
 parallel. Port groups must not overlap and contain at least one channel, 
 so the maximum number of port groups is equal to the number of ports of the analyzer.</p>
 <p><span style="font-weight: bold;"><B><a class="dropspot" href="javascript:kadovTextPopup(this)" id="a18" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Example: 
 Using port groups on a 4-port analyzer</a></B></span></p>
 <div class="droptext" id="POPUP182030496" style="display: 'none'; " x-ss-type="dropdown">
  <p>A 4-port analyzer can be used for parallel measurements if only 1-port, 
 2-port or 3-port parameters are needed:</p>
  <ul type="disc" class="whs3">
   <li class=kadov-p-CList>
   <p class=List>Combining ports 1 and 2 to a 
 first port group, ports 3 and 4 to a second port group leaves two sets 
 of 2-port parameters to be measured in parallel. The measurement provides 
 2 * 4 = 8 S-parameters and is faster than a full 4-port measurement (16 
 parameters). </p></li>
   <li class=kadov-p-CList>
   <p class=List>A reflection measurement involving 
 four port groups, each with a single port, provides 4 parameters and is 
 faster than the measurement with two groups of 2 ports. </p></li>
  </ul>
 </div>
 <p>The defined port groups are indicated in the first column of the <span 
 style="font-style: italic;"><I><a href="Channel_Mode.htm#Port_Configuration"
								id=a14
								style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">Port 
 Configuration</a></I></span>table <span style="font-style: italic;"><I>(Meas).</I></span> Selecting 
 <span style="font-style: italic;"><I>Simultaneous Measurement of Port Groups 
 </I></span>enables two additional buttons: </p>
 <ul type="disc" class="whs3">
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Add 
 Group </I></span>adds a new group (with default channels, depending on the 
 existing port groups) to the <span style="font-style: italic;"><I>Port Groups 
 </I></span>table.</p></li>
  <li class=kadov-p-CList>
  <p class=List><span style="font-style: italic;"><I>Delete 
 Group </I></span>deletes the selected group.</p></li>
 </ul>
</div>
<p><img src="../../../small_images/tip.jpg" x-maintain-ratio="TRUE" width="36px" height="37px" border="0" class="img_whs8">Always select the balanced port configuration <span style="font-weight: bold;"><B>before</B></span> 
 defining port groups. When a new balanced port is created, the analyzer 
 deactivates <span style="font-style: italic;"><I>Simultaneous Measurement 
 of Port Group </I></span>and deletes all existing port groups. &nbsp;</p>

<table x-use-null-cells class="whs19">

<tr valign="top" class="whs10">
<td colspan="1" rowspan="1" width="24%" class="whs11">
<p class="whs12">Remote control:</td>
<td colspan="1" rowspan="1" width="76%" class="whs13">
<p class="whs20"><a href="../../../SCPI_Reference/SOURce/SOURce_Ch.htm#GROup" id="A83" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ ">SOURce&lt;Ch&gt;:GROup&lt;group_no&gt; 
 &nbsp;&lt;log_port1&gt;,&lt;log_port2&gt;</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
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//--></script><a href="../../../SCPI_Reference/SOURce/SOURce_Ch.htm#GROup_CLEar" id="a25" style="/*begin!kadov{{*/ position: relative; /*}}end!kadov*/ "><br>
SOURce&lt;Ch&gt;:GROup&lt;group_no&gt;:CLEar [ALL]</a><script 
 type="text/javascript"
	language=JavaScript1.2><!--
kadovInitEffects('a25');
//--></script></td></tr>
</table>


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