<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 11 (filtered medium)"><!--[if !mso]><style>v:* {behavior:url(#default#VML);}o:* {behavior:url(#default#VML);}w:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}</style><![endif]--><o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"/><o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/><o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"/><!--[if !mso]><style>st1:*{behavior:url(#default#ieooui) }</style><![endif]--><style><!-- /* Font Definitions */ @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman";}a:link, span.MsoHyperlink {color:blue; text-decoration:underline;}a:visited, span.MsoHyperlinkFollowed {color:purple; text-decoration:underline;}span.EmailStyle17 {mso-style-type:personal; font-family:Arial; color:windowtext;}span.EmailStyle18 {mso-style-type:personal-reply; font-family:Arial; color:navy;}@page Section1 {size:21.0cm 842.0pt; margin:35.45pt 89.85pt 28.4pt 89.85pt;}div.Section1 {page:Section1;}--></style></head><body lang=EN-US link=blue vlink=purple><div class=Section1><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Hi Warren,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Thanks for that - I'll take alook....<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>James<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p><div><div class=MsoNormal align=center style='text-align:center'><font size=3face="Times New Roman"><span style='font-size:12.0pt'><hr size=2 width="100%" align=center tabindex=-1></span></font></div><p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Pickles, Warren[mailto:Warren.Pickles@tycoelectronics.com]
<b><span style='font-weight:bold'>Sent:</span></b> 02 February 2005 10:23
<b><span style='font-weight:bold'>To:</span></b> VRF
<b><span style='font-weight:bold'>Subject:</span></b> [vrf] RE: 8753Programmers Reference....</span></font><o:p></o:p></p></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>James,</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Try this really long URL:</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'><ahref="http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-536890841.536881991.03&LANGUAGE_CODE=eng&contentType=Editorial&entityType=ED35&COUNTRY_CODE=US">http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-536890841.536881991.03&LANGUAGE_CODE=eng&contentType=Editorial&entityType=ED35&COUNTRY_CODE=US</a></span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>(should all be on one line).</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Failing that, I have the PDFs but they arelarge files - will post to just you rather than to the group if you're stuck.</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial; color:blue'>Warren</span></font></st1:place></st1:City><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><blockquote style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Tahoma><spanstyle='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----
<b><span style='font-weight:bold'>From:</span></b> <st1:PersonName w:st="on">James Atkin</st1:PersonName> [mailto:JamesA@aerial.co.uk]
<b><span style='font-weight:bold'>Sent:</span></b> 02 February 2005 10:07
<b><span style='font-weight:bold'>To:</span></b> VRF
<b><span style='font-weight:bold'>Subject:</span></b> [vrf] 8753 ProgrammersReference....</span></font><o:p></o:p></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Hi all,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>I am writing some code to control the 8753B/C/D/Eetc... but can't find the programmers guide anywhere on the Agilent Web Site!<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Does anyone have a copy of the PDF they could post tothe group?<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><st1:PersonName w:st="on"><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>James Atkin</span></font></st1:PersonName><fontsize=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>---
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<b><span style='font-weight:bold'>Sent:</span></b> 02 February 2005 10:23
<b><span style='font-weight:bold'>To:</span></b> VRF
<b><span style='font-weight:bold'>Subject:</span></b> [vrf] RE: 8753Programmers Reference....</span></font><o:p></o:p></p></div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>James,</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Try this really long URL:</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'><ahref="http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-536890841.536881991.03&LANGUAGE_CODE=eng&contentType=Editorial&entityType=ED35&COUNTRY_CODE=US">http://www.home.agilent.com/cgi-bin/pub/agilent/expandedresults/cp_ExpandedResults.jsp?NAV_ID=-536890841.536881991.03&LANGUAGE_CODE=eng&contentType=Editorial&entityType=ED35&COUNTRY_CODE=US</a></span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>(should all be on one line).</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Failing that, I have the PDFs but they arelarge files - will post to just you rather than to the group if you're stuck.</span></font><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><div><p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial; color:blue'>Warren</span></font></st1:place></st1:City><o:p></o:p></p></div><div><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p></div><blockquote style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Tahoma><spanstyle='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----
<b><span style='font-weight:bold'>From:</span></b> <st1:PersonName w:st="on">James Atkin</st1:PersonName> [mailto:JamesA@aerial.co.uk]
<b><span style='font-weight:bold'>Sent:</span></b> 02 February 2005 10:07
<b><span style='font-weight:bold'>To:</span></b> VRF
<b><span style='font-weight:bold'>Subject:</span></b> [vrf] 8753 ProgrammersReference....</span></font><o:p></o:p></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Hi all,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>I am writing some code to control the 8753B/C/D/Eetc... but can't find the programmers guide anywhere on the Agilent Web Site!<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Does anyone have a copy of the PDF they could post tothe group?<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><st1:PersonName w:st="on"><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'>James Atkin</span></font></st1:PersonName><fontsize=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p><p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>---
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I agree with Julia that we need a better idea of what you mean by phase
difference in this case. Your data are extremely noisy so I would guess
that some kind of filtering is called for. This filtering is implicit in
the FFT method of determining the phase such as Dave Watling posted, so
that may be your best method.
The exercise is complicated by the fact that your samples do not start at
the same time value, but this can be adjusted for by adding the correct
offset to the FFT phase difference. More seriously, the sampling interval
varies by about 5% independently for both signals. This will limit the
accuracy of the FFT method, but perhaps the inaccuracy is minor compared to
the noise level. There are methods of determining an instantaneous phase
difference, but with the noise level and sampling variation I doubt they
would be useful to you.
Regards,
--
Bill Ossmann
Philips Ultrasound
e-mail: bill.ossmann@philips.com
------------------------------------------------------
Hi,
thank you for your answer, but unfortunatelly it doesn't help very much,
because the data are very raw measurement values... I attached two data
files, the (visual determined, see attached Excel Sheet) solution will be
something like delta_x = -50... I assume that I have to do something with
the method of minimizing the sum of the squares of errors (are these the
correct english words?)...
Regards, Axel
-----Ursprngliche Nachricht-----
Von: Dave.Watling@Zarlink.Com [mailto:Dave.Watling@Zarlink.Com]
Gesendet: Mittwoch, 2. Februar 2005 11:13
An: VRF
Betreff: [vrf] Re: Phase of two oscillations
Hi,
Here are three methods demonstrated in one Vee program - they assume the
oscillations are sinusoidal:
(See attached file: Measuring phase relationship.vee)
David Watling
a.kieser@francoty
p.com
To
02/02/2005 09:40 VRF <vrf@agilent.com>
cc
Please respond to Subject
a.kieser@francoty [vrf] Phase of two oscillations
p.com
Hi,
does anybody have a solution how to evaluate the phase of two oscillations
with the same frequency, which I have in measured (X/Y)-Data-Rows with
Vee
Matlab
and perhaps Excel
Thank you for an answer in advance.
with best regards,
Axel.
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[attachment "Dat2.txt" deleted by Bill Ossmann/ANR/MS/PHILIPS]
[attachment "Dat5.txt" deleted by Bill Ossmann/ANR/MS/PHILIPS]
[attachment "Dat.zip" deleted by Bill Ossmann/ANR/MS/PHILIPS]
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