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vrf E4419B Headaches

Question asked by WDrago on Mar 22, 2005
Latest reply on Mar 22, 2005 by WDrago
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META content="MSHTML 6.00.2800.1491" name=GENERATOR></HEAD><BODY><DIV><SPAN class=191510415-23032005><FONT face=Verdana color=#000080>Thanks everyone!</FONT></SPAN></DIV><DIV><SPAN class=191510415-23032005><FONT face=Verdana color=#000080></FONT></SPAN> </DIV><DIV><SPAN class=191510415-23032005><FONT face=Verdana color=#000080>I was tasked with a different crises today, so it's going to be a while until I can try your suggestions.</FONT></SPAN></DIV><DIV><SPAN class=191510415-23032005><FONT face=Verdana color=#000080></FONT></SPAN> </DIV><DIV><SPAN class=191510415-23032005><FONT face=Verdana color=#000080>Bill</FONT></SPAN></DIV><BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000080 2px solid">  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma   size=2>-----Original Message-----<BR><B>From:</B> Mike Groves   [mailto:mike@grovesnet.org]<BR><B>Sent:</B> Wednesday, March 23, 2005 12:13   AM<BR><B>To:</B> VRF<BR><B>Subject:</B> RE: [vrf] E4419B   Headaches<BR><BR></FONT></DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff   size=2>Sorry, but I forgot to add, you can find the PDF version of the manuals   here...</FONT></SPAN></DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff   size=2></FONT></SPAN> </DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff size=2><A   href="http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-11340.536881896.03&contentType=Editorial&entityType=ED35">http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-11340.536881896.03&contentType=Editorial&entityType=ED35</A></FONT></SPAN></DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff   size=2></FONT></SPAN> </DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff size=2>(You   may have to put it back together if Outlook mangles it into multiple   lines.)</FONT></SPAN></DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff   size=2></FONT></SPAN> </DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff size=2>More   cheers!</FONT></SPAN></DIV>  <DIV><SPAN class=677050805-23032005><FONT face=Arial color=#0000ff size=2>Mike   Groves</FONT></SPAN></DIV>  <BLOCKQUOTE>    <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma     size=2>-----Original Message-----<BR><B>From:</B> Mike Groves     [mailto:mike@grovesnet.org]<BR><B>Sent:</B> Tuesday, March 22, 2005 9:36     PM<BR><B>To:</B> VRF<BR><B>Subject:</B> RE: [vrf] E4419B     Headaches<BR><BR></FONT></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>Bill,</FONT></SPAN></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2></FONT></SPAN> </DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>The easiest way I found to set/use the Cal Factor     for that Power Meter is to first manually punch     in the Cal Factor tables for each of the sensors. Once done and     selected, any CAL performed (using the reference port) will     automatically use the 50MHz CF for that sensor. Also, for     any measurement, you can simply tell the PM what frequency you are     about to measure (it just has to be close) and it will interpolate     and set the appropriate Cal Factor. There is a small delay     each time a new freq is entered, so I just set it up with the center freq of     the range I'm working in and leave it there. I found the error     introduced is very tiny, compared with the overall picture. YMMV.     </FONT></SPAN><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>The only exception to this is during a full cal routine of     the test station, where broad freq ranges are used and delays     are not as important.</FONT></SPAN></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2></FONT></SPAN> </DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>Just as a side note. I worked in RF power and dealt with rather     large load attenuations, so during a detailed test station CAL routine,     I would have VEE save a profile of the load attenuator to a cal table on the     hard drive. During product testing, I would have     VEE recall the appropriate attenuation for the freq I was     working at and stuff it in the offset of the Power Meter. If     an exact cal point was not available, I would have VEE interpolate     between the 2 nearest points. Not only would it now read     "corrected" measurements right into VEE, but more important, the     PM's front panel always displayed corrected measurements during the     test process. This not only helped for "sanity checks", but also     when customers (and bosses) would be observing the stations     at work and watch the numbers go by.</FONT></SPAN></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2></FONT></SPAN> </DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>Just a little tip I picked up over the years. I'm sure     others in the VRF community do similar things, but as an inexperienced     programmer, I had to learn a lot of these things the hard     way.</FONT></SPAN></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2></FONT></SPAN> </DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>Cheers,</FONT></SPAN></DIV>    <DIV><SPAN class=271081203-23032005><FONT face=Arial color=#0000ff     size=2>Mike Groves</FONT></SPAN></DIV>    <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">      <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma       size=2>-----Original Message-----<BR><B>From:</B> Drago, William       @NARDAEAST [mailto:William.Drago@L-3com.com]<BR><B>Sent:</B> Tuesday,       March 22, 2005 1:10 PM<BR><B>To:</B> VRF<BR><B>Subject:</B> RE: [vrf]       E4419B Headaches<BR><BR></FONT></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080>Thanks,</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080></FONT></SPAN> </DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial color=#000080>It is       the 50MHz/1mW correction factor that I wanted to change. Yeah, I was       looking at the wrong display. Thanks.</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080></FONT></SPAN> </DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial color=#000080>I also       want to change the measurement cal factor so the info you provided on       that is appreciated.</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080></FONT></SPAN> </DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial color=#000080>BTW, I       have not been able to find the PDF version of the programming manual. All       I have is the hard copy.</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080></FONT></SPAN> </DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080>Thanks,</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080>Bill</FONT></SPAN></DIV>      <DIV><SPAN class=277110220-22032005><FONT face=Arial       color=#000080></FONT></SPAN> </DIV>      <BLOCKQUOTE       style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000080 2px solid">        <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma         size=2>-----Original Message-----<BR><B>From:</B> DANZY,OJ (A-USA,ex1)         [mailto:oj_danzy@agilent.com]<BR><B>Sent:</B> Tuesday, March 22, 2005         2:45 PM<BR><B>To:</B> VRF<BR><B>Subject:</B> RE: [vrf] E4419B         Headaches<BR><BR></FONT></DIV>        <DIV><SPAN class=672163319-22032005><FONT face=Arial color=#0000ff         size=2>Hello Bill,</FONT></SPAN></DIV>        <DIV><SPAN class=672163319-22032005><FONT face=Arial color=#0000ff         size=2></FONT></SPAN> </DIV>        <DIV><SPAN class=672163319-22032005><FONT face=Arial color=#0000ff         size=2>The command that you are using is changing the reference cal         factor used during the 50 MHz/1mW calibration process.  This         values is only displayed under [Zero/Cal] as the REF CF: value.          The CF value for measurements is set under the [Frequency/Cal Fac] ->         Cal Fac setting.</FONT></SPAN></DIV>        <DIV><SPAN class=672163319-22032005><FONT face=Arial color=#0000ff         size=2></FONT></SPAN> </DIV>        <DIV><SPAN class=672163319-22032005><FONT face=Arial color=#0000ff         size=2>Check out the command below to change the measurement cal factor         and the command you are already using if you want to change the cal         factor for the calibration (Reference cal factor).</FONT></SPAN></DIV>        <DIV><SPAN class=672163319-22032005>        <P align=left><STRONG><SPAN class=672163319-22032005></SPAN><FONT         face=Arial><FONT size=2>M<SPAN class=672163319-22032005>easurement         Calibration         Factor:</SPAN><BR>[SENSe[1]]|SENSe2:CORRection:CFACtor|GAIN[1|2][:INPut][:MAGNitude]         |numeric_value><SPAN class=672163319-22032005> (page 9-26 of         printed manual or 328 of pdf file).</SPAN></FONT></FONT></STRONG></P>        <P align=left><STRONG><FONT face=Arial><FONT size=2><SPAN         class=672163319-22032005>Reference Calibration Factor:<BR><B><FONT         face=Arial size=2>CALibration[1|2]:RCFactor |numeric_value> (page         4-12 of printed manual or 240 of pdf         file)</P></B></FONT></SPAN></FONT></FONT></STRONG>        <P align=left><FONT face=Arial><FONT color=#0000ff size=2><SPAN         class=672163319-22032005>O.J.</SPAN></FONT></FONT></P></SPAN></DIV>        <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">          <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma           size=2>-----Original Message-----<BR><B>From:</B> Drago, William           @NARDAEAST [mailto:William.Drago@L-3com.com]<BR><B>Sent:</B> Tuesday,           March 22, 2005 2:27 PM<BR><B>To:</B> VRF<BR><B>Subject:</B> [vrf]           E4419B Headaches<BR><BR></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005>All,</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN class=524072119-22032005>I'm           trying to write the calibration correction factor to the           E4419B.</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN class=524072119-22032005>I'm           using the example in the book: "CAL:RCF           98.7PCT"</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN class=524072119-22032005>I           can read this back successfully using, "CAL:RCF?"</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005>But, the meter display always shows CF:           100%</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005>What gives?</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005></SPAN></FONT><FONT face=Arial           color=#000080><SPAN class=524072119-22032005></SPAN></FONT> </DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005>Thanks,</SPAN></FONT></DIV>          <DIV><FONT face=Arial color=#000080><SPAN           class=524072119-22032005>Bill</SPAN></FONT></DIV>---</BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE>---<BR>You   are currently subscribed to vrf as: William.Drago@l-3com.com<BR>To subscribe   send a blank email to "join-vrf@it.lists.it.agilent.com".<BR>To unsubscribe   send a blank email to "leave-vrf@it.lists.it.agilent.com".<BR>To send messages   to this mailing list, email "vrf@agilent.com". <BR>If you need help with the   mailing list send a message to "owner-vrf@it.lists.it.agilent.com". </BLOCKQUOTE>---<BR>You are currently subscribed to vrf as: rsb@soco.agilent.com<BR>To subscribe send a blank email to "join-vrf@it.lists.it.agilent.com".<BR>To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com".<BR>To send messages to this mailing list,  email "vrf@agilent.com".  <BR>If you need help with the 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