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vrf using 2 PC's on same GPIB bus

Question asked by VRFuser on May 4, 2004
<!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 6.00.2800.1400" name=GENERATOR><STYLE>@font-face {     font-family: Wingdings;}@font-face {     font-family: Tahoma;}@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; }P.MsoNormal {     FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"}LI.MsoNormal {     FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"}DIV.MsoNormal {     FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"}A:link {     COLOR: blue; TEXT-DECORATION: underline}SPAN.MsoHyperlink {     COLOR: blue; TEXT-DECORATION: underline}A:visited {     COLOR: purple; TEXT-DECORATION: underline}SPAN.MsoHyperlinkFollowed {     COLOR: purple; TEXT-DECORATION: underline}P {     FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"}SPAN.emailstyle17 {     COLOR: windowtext; FONT-FAMILY: Arial}SPAN.EmailStyle19 {     COLOR: navy; FONT-FAMILY: Arial}DIV.Section1 {     page: Section1}</STYLE></HEAD><BODY lang=EN-US vLink=purple link=blue><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Hi Doug and Stijn, and vrf-ers, </SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Sorry for the late response.</SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Note that the Agilent 82357A USB-GPIB converter that Stijn mentions below cannot pass or receive Control (the GPIB "TCT" message). </SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Also, the 82357A must always be System Controller, which is a logical outcome of the inability to pass or receive control, given that the 82357A is primarily a controller.</SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>So the idea of having two GPIB controllers on a bus, at least one of them an 82357A and passing control between them, will not work.</SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Also, I have seen horrible things--complete paralysis or nasty unfixable error messages--occur at wakeup when there were 2 System Controllers on the same bus. Can't remember what triggered the problem unfortunately.</SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>I advise extreme caution and thorough testing if you pursue this path, because it's way out of spec and likely to fail under at least some conditions.</SPAN></FONT></DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004></SPAN></FONT> </DIV><DIV><FONT face=Arial color=#0000ff size=2><SPAN class=607250517-05052004>Best Rregards,</SPAN></FONT></DIV><DIV> </DIV><P><FONT size=2>Scott Bayes<BR>Software Technical Support<BR><BR>Agilent Technologies, Inc.<BR>815 14th Street S.W.<BR>Loveland, CO, U.S.A. 80537<BR><BR>970 679 3799 Tel<BR>970 635 6867 Fax</FONT> </P><BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid">  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma   size=2>-----Original Message-----<BR><B>From:</B> Doug Cote   [mailto:decote@verizon.net]<BR><B>Sent:</B> Wednesday, April 28, 2004 9:10   AM<BR><B>To:</B> PDL-LISTS,VRF (A-Lists,unix1)<BR><B>Subject:</B> [vrf] RE:   using 2 PC's on same GPIB bus<BR><BR></FONT></DIV>  <DIV class=Section1>  <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Yes you can. The GPIB   card in your old pc must remain configured as the Controller. There can be   only one controller on the bus; all other devices are talkers and listeners.   When you attach your new computer, the GPIB card must first be configured as   talker/listener. You do that during your initial setup of the card in   software, one of the settings you are asked to configure is “board is system   controller”, enter “NO” in this location. What this does is when your new   computer wants to send a command to another piece of equipment on the buss, it   must ask permission of the old computer (controller), it does this   automatically and with out your intervention. You can do this with multiple   computers, as long as only one is controller, you can send commands and   transfer data from any device to any device, computer or instrument. Hope this   helps</SPAN></FONT></P>  <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>  <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Doug   Cote</SPAN></FONT></P>  <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>  <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN   style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original   Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Deblancq   Stijn [mailto:Stijn.Deblancq@Advantra.com] <BR><B><SPAN   style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, April 28, 2004 1:55   AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> VRF<BR><B><SPAN   style="FONT-WEIGHT: bold">Subject:</SPAN></B> [vrf] using 2 PC's on same GPIB   bus</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=2><SPAN style="FONT-SIZE: 10pt">Hello</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=2><SPAN style="FONT-SIZE: 10pt">I want to upgrade my test equipment here   with a new pc and usb-gpib convertor.</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=2><SPAN style="FONT-SIZE: 10pt">I still want to use the old pc with old   software used in production.</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=2><SPAN style="FONT-SIZE: 10pt">Can i put both pc's on the bus at the   same time or will this influence my tests?</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P style="MARGIN-LEFT: 0.5in"><B><FONT face="Times New Roman" color=green   size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: green">Stijn   Deblancq</SPAN></FONT></B><B><FONT color=black size=2><SPAN   style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black"><BR>ADVANTRA   INTERNATIONAL</SPAN></FONT></B></P>  <P style="MARGIN-LEFT: 0.5in"><B><FONT face="Times New Roman" color=black   size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black">Software   Engineer</SPAN></FONT></B><FONT color=black size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: black"><BR></SPAN></FONT><FONT face=Wingdings   color=black size=2><SPAN   style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Wingdings">(</SPAN></FONT><FONT   color=silver size=2><SPAN style="FONT-SIZE: 10pt; COLOR: silver">   </SPAN></FONT><B><FONT color=black size=2><SPAN   style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black">Work Tel#:   </SPAN></FONT></B><B><FONT color=blue size=2><SPAN   style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: blue">+32 (0)   56-23.94.42</SPAN></FONT></B><FONT color=black size=1><SPAN   style="FONT-SIZE: 7.5pt; COLOR: black"><BR></SPAN></FONT><B><FONT   face=Wingdings color=black><SPAN   style="FONT-WEIGHT: bold; COLOR: black; FONT-FAMILY: Wingdings">+</SPAN></FONT></B><FONT   color=black size=1><SPAN style="FONT-SIZE: 7.5pt; COLOR: black">   </SPAN></FONT><U><FONT color=black><SPAN style="COLOR: black">mailto: <A   href="mailto:stijn.deblancq@advantra.com">stijn.deblancq@advantra.com</A></SPAN></FONT><FONT   color=navy><SPAN style="COLOR: navy"> </SPAN></FONT></U></P>  <P style="MARGIN-LEFT: 1in"><FONT face="Times New Roman" size=3><SPAN   style="FONT-SIZE: 12pt">- - - - - - - Appended by Advantra. - - - - - -   -<BR>This e-mail and any attachments may contain information which is   confidential, proprietary, privileged or otherwise protected by law. The   information is solely intended for the named addressee (or a person   responsible for delivering it to the addressee). If you are not the intended   recipient of this message, you are not authorized to read, print, retain, copy   or disseminate this message or any part of it. If you have received this   e-mail in error, please notify the sender immediately by return e-mail and   delete it from your computer.</SPAN></FONT></P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>  <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"   size=3><SPAN style="FONT-SIZE: 12pt">---<BR>You are currently subscribed to   vrf as: decote@twcny.rr.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". </SPAN></FONT></P>  <P class=MsoNormal><FONT face=Arial size=2><SPAN   style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV>---<BR>You   are currently subscribed to vrf as: scott_bayes@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   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 mailing list send a message to "owner-vrf@it.lists.it.agilent.com".</BODY></HTML>  

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