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vrf Simple GPIB logging

Question asked by VRFuser on Nov 26, 2007

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Deembed intrinsic

NWA calibrated to probe tips.

Have OPEN & SHORT on wafer.

I have been off vrf for some time. There probably is some example code in the vrf archive. (I no longer know where the archive is).

S-parameters of DUT and OPEN, SHORT are in TouchStone(and CITI) format.

I need to subtract the parasites from the DUT measurement.

Any help would be greatly appreciated.

Regards, Rick Powell

HYPERLINK "mailto:rpowell@amptechdesign.com"rpowell@amptechdesign.com

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VRFuser Nov 22, 2007 3:43 AM
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Hi all,

I would like to create an event handler which will be activated whenever the GPIB is used, for logging traffic (for each GPIB transaction).

I cannot use the Bus IO monitor because:

1) I cannot re-format the text to be ‘readable’ and

2) I cannot put other items in the same log (comments, serial bus traffic, etc).

Does anyone know how to do this?

Regards

David Watling

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les_hammer Nov 23, 2007 8:16 AM
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I would like to create an event handler which will be activated whenever the GPIB is used, for logging traffic (for each GPIB transaction).

I cannot use the Bus IO monitor because:

1) I cannot re-format the text to be ‘readable’ and

2) I cannot put other items in the same log (comments, serial bus traffic, etc).

Does anyone know how to do this?

I used to do this with a GPIB printer set to "listen all" mode - back in the days when printers were GPIB. You could make your own "GPIB printer" if you had another GPIB card that you set to monitor bus traffic.

Hmmm, Might be easier to figure out how to reformat the Bus IO monitor...

~~Les

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VRFuser Nov 23, 2007 9:39 AM
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Hi,

Thanks for all the replies. I think using the bus IO monitor -> file method is probably the best way so far – it’s just that I will need to post-process the file to make the logs readable. I cannot use the IO libraries v15 method, as I cannot use VISA to control my serial port (due to a problem with virtual COM ports).

What I was really after was an ‘event handler’, preferably using some GPIB activeX control which I don’t yet know about. This would be far more flexible, as I could process each line before it goes to file, and the file could be appended from any other functions.

Dave Watling

_____

From: Lopez, Francisco (Paco TIJ-Tools Tech) [mailto:paco.lopez@hp.com]
Sent: 23 November 2007 16:43
To: VRF
Subject: FW: [vrf] Simple GPIB logging

Hi,

You could activate file logging in the Bus I/O monitor, goto Properties and enable the File Logging (set it to TRUE), a new button will appear in the upper-right side of the IO Monitor to select the file to log the data. By enabling this, also appear new Add Terminal->Control input options. You could do logging that way and then read the file. I will write a sample next monday, my day has finished....

Hope it helps,

Paco

_____

From: les_hammer@att.net [mailto:les_hammer@att.net]
Sent: Friday, November 23, 2007 5:16 PM
To: VRF
Subject: Re: [vrf] Simple GPIB logging

I would like to create an event handler which will be activated whenever the GPIB is used, for logging traffic (for each GPIB transaction).

I cannot use the Bus IO monitor because:

1) I cannot re-format the text to be ‘readable’ and

2) I cannot put other items in the same log (comments, serial bus traffic, etc).

Does anyone know how to do this?

I used to do this with a GPIB printer set to "listen all" mode - back in the days when printers were GPIB. You could make your own "GPIB printer" if you had another GPIB card that you set to monitor bus traffic.

Hmmm, Might be easier to figure out how to reformat the Bus IO monitor...

~~Les

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vrf Simple GPIB logging

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