How to modify the VB examples in ni-scope to sample data simultaneously from two channels in PCI 5922?

Dear all:
I want to write VB programs to sample data simultaneously from two channels in PCI 5922. The niscope driver has some example VB programs to sample data from one channel, for example, the "save to file ", the program works well to sample the data from one channel. When I modify it to sample data simultaneously from two channels, I always get error so I seek your help on how to write the program to sample two channels simulatenously. Thanks. I attached the sample program here and what I tried to modify is the "channel name" and "waveform()"
Regards
Andy
Attachments:
savetofile.doc ‏42 KB

Hi Bajaf, regarding the FFT of the four channels, the next link might be what your looking for:
http://digital.ni.com/public.nsf/allkb/862567530005f09c8625671b00739970
Respect the phase issue how are you doing the acquisition of the signals, are you doing two independent acquisitions? if you are controlling them as independent acquisitions try to synchronize them with triggers and the clock.
How much are they out of phase?
By the way we know have forums in Spanish
Best Regards
Benjamin C
Senior Systems Engineer // CLA // CLED // CTD

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How to modify the search results of the GUI for subscribing to calendars

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Note:
<OL>
<LI>The following information applies only to iPlanet Calendar Server 5.0
Patch 3.
<LI>All of the cases for which the XSLT changes will work have not been
verified.
<LI>The following is only an example of an XSLT customization.
</OL>
The example below shows a sample customization of the
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part of the search results in the GUI, which would normally show just the
calendar ID. It will render the returned calendars in the following format:
<P>
Display Name - <I>description</I>
<P>
Normally, the format would be as follows:
<P>
Calendar-ID - <I>description</I>
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</A>
The example consists of the following two files:
<P>
<OL>
<LI>search_for_calendars_common.xsl
(the entire XSLT file)
<P>
<LI>diffctx.txt
(the context sensitive diff patch file,
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</OL>
<P>
<HR>
</A><B>
search_for_calendars_common.xsl</B>
<?xml version="1.0" ?>
<!DOCTYPE xsl:stylesheet (View Source for full doctype...)>
- 
- <xsl:stylesheet xmlns:xsl="http://www.w3.org/XSL/Transform/1.0">
- 
<xsl:output method="html" encoding="ISO-8859-1" />
<xsl:include href="data/common.xsl" />
<xsl:include href="data/i18n.xsl" />
<xsl:include href="data/date_format.xsl" />
<xsl:include href="data/dialog_tabs.xsl" />
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<xsl:apply-templates select="calendar" />
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- <xsl:choose>
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- <xsl:variable name="Frame1">
<xsl:value-of select="frame[1]" />
</xsl:variable>
- <xsl:variable name="Frame2">
<xsl:value-of select="frame[2]" />
</xsl:variable>
- <xsl:variable name="Frame3">
<xsl:value-of select="frame[3]" />
</xsl:variable>
- <xsl:variable name="tab_value">
<xsl:value-of select="@tab" />
</xsl:variable>
- <HTML>
- <HEAD>
<xsl:call-template name="contextJavascript" />
<TITLE>Calendars Search: Calendar Express - iPlanet</TITLE>
</HEAD>
- <FRAMESET border="0" frameborder="0" rows="77,*,71">
<FRAME name="tab" marginheight="0" marginwidth="0" scrolling="no"
scrollbars="no" src="{$Frame1}" />
<FRAME name="main" frameborder="0" src="{$Frame2}" />
<FRAME name="button" marginheight="0" marginwidth="0" scrolling="no"
scrollbars="no" frameborder="0" src="{$Frame3}" />
</FRAMESET>
</HTML>
</xsl:when>
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- <xsl:if test="@name='searchProperties'">
<xsl:call-template name="search_toolbar" />
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</xsl:when>
- <xsl:when test="@view='main'">
- <xsl:for-each select="group">
- <xsl:if test="@name='main'">
<xsl:call-template name="main" />
</xsl:if>
</xsl:for-each>
</xsl:when>
- <xsl:when test="@view='button'">
- <xsl:for-each select="group">
- <xsl:if test="@name='button'">
<xsl:call-template name="button_root" />
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</xsl:for-each>
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- <xsl:otherwise>
- <html>
What's this view? (search_for_cals.xsl) -
<xsl:value-of select="@view" />
</html>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
- <xsl:template name="search_toolbar">
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<xsl:call-template name="emit_frame_head_tag" />
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<xsl:value-of select="./formdata@action" />
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- <TD colspan="4">
<FONT size="{$font_size_big_2}" face="{$font_name}">Find all calendars where
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</TD>
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</FONT>
</TD>
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- <FONT size="{$font_size_big_2}" face="{$font_name}">
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</TD>
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</TABLE>
</TD>
</TR>
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</FORM>
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- <HTML>
<xsl:call-template name="emit_frame_head_tag" />
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<xsl:value-of select="./formdata@action" />
</xsl:attribute>
<xsl:attribute name="name">form</xsl:attribute>
<xsl:apply-templates select="formdata" />
<INPUT type="hidden" name="how" value="0" />
<INPUT type="hidden" name="which" value="name;calid" />
<INPUT type="hidden" name="what" value=" />
<INPUT type="hidden" name="selectedGroup" />
- <xsl:if test="(./calsearchresults/nomatch)">
- 
&nbsp;
&nbsp;
No Match Found
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- <xsl:for-each select="./calsearchresults/searchresultcal">
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&nbsp;
&nbsp;
- <FONT size="{$font_size_big_2}" face="{$font_name}">
- <FONT size="{$font_size_big}" face="{$font_name}">
Owner:
<xsl:value-of select="@owner" />
<FONT size="{$font_size_big}" face="{$font_name}" color="{$bgcolor_wend_mid}">|
</FONT>
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<xsl:value-of select="@id" />
<BR />
</FONT>
- <FONT size="{$font_size_big_2}" face="{$font_name}">
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&nbsp;
&nbsp;
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- <xsl:attribute name="value">
<xsl:value-of select="@name" />
</xsl:attribute>
</INPUT>
&nbsp;
&nbsp;
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<xsl:value-of select="@viewCommand" />
</xsl:attribute>
<xsl:value-of select="@name" />
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&nbsp;
&nbsp;
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- <xsl:attribute name="href">
<xsl:value-of select="@viewCommand" />
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<P>
<A HREF="#back">Back</A>
<P>
<HR>
</A>
<B>diffctx.txt</B>
Index: search_for_calendars_common.xsl
===================================================================
RCS file: /m/src/ns/server/msg/calendar/core/html/search_for_calendars_common.xsl,v
retrieving revision 1.1.2.14
diff -c -r1.1.2.14 search_for_calendars_common.xsl
*** search_for_calendars_common.xsl 2000/12/12 23:10:43 1.1.2.14
--- search_for_calendars_common.xsl 2001/03/15 23:55:19
*** 182,188 ****
&nbsp; &nbsp;
<INPUT type="checkbox" name="calendar">
<xsl:attribute name="value">
! <xsl:value-of select="@id"/>
</xsl:attribute>
</INPUT>
&nbsp; &nbsp;
--- 182,188 ----
&nbsp; &nbsp;
<INPUT type="checkbox" name="calendar">
<xsl:attribute name="value">
! <xsl:value-of select="@name"/>
</xsl:attribute>
</INPUT>
&nbsp; &nbsp;
*** 190,196 ****
<xsl:attribute name="href">
<xsl:value-of select="@viewCommand"/>
</xsl:attribute>
! <xsl:value-of select="@id"/>
</A>
</xsl:when>
<xsl:otherwise>
--- 190,196 ----
<xsl:attribute name="href">
<xsl:value-of select="@viewCommand"/>
</xsl:attribute>
! <xsl:value-of select="@name"/>
</A>
</xsl:when>
<xsl:otherwise>
*** 199,205 ****
<xsl:attribute name="href">
<xsl:value-of select="@viewCommand"/>
</xsl:attribute>
! <xsl:value-of select="@id"/>
</A>
&nbsp;(Subscribed)
</xsl:otherwise>
--- 199,205 ----
<xsl:attribute name="href">
<xsl:value-of select="@viewCommand"/>
</xsl:attribute>
! <xsl:value-of select="@name"/>
</A>
&nbsp;(Subscribed)
</xsl:otherwise>
<P>
<A HREF="#back">Back</A>

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