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U2702A master-slave

I have three U2702A scope modules in the U2781A chassis.  I would like them to all trigger when a particular one triggers.  It seems that this is done via the master slave settings in the chassis SSI configuration.  I see where you can set this via there Agilent Measurement Manager tool, but does anyone know how to se this in Labview?  I do not see this capability in either thier instrument driver or the IVIScope driver.


On a side note is there any way to send VISA writes/reads to a IVI controlled device?  I tried and it fails.  It looks like the IVI session has it locked so you cannot perfrom a VISA write to it.  I think I know the command I need to send.

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Hello, Muffin!


Here is a document that outlines using IVI drivers in LabVIEW. I searched through some documentation and found this info below from an Agilent forum about the U2702A device. 

If you do have any questions as to the specific capabilities of the U2702A itself (can one be set to master?), it might be worth having a conversation with Agilent support. 


Using IVI Drivers in LabVIEW


According to the FAQs, the only method to control the analyzer is through the U2702A's IVI Driver as the instrument does not have SCPI commands.

Driver: U2702A IVI Driver ... id=1540317

FAQ: Are there any programming commands for the U2701A/U2702A USB Modular Oscilloscope? ... id=1493500

FAQ: Are there any SCPI programming commands available for the U2701A/2702A USB Modular Oscilloscope instrument control? ... id=1493511

FAQ: Where can I find the U2701A/U2702A IVI-driver's programming reference guide? ... id=1493635


John H.
Applications Engineering
National Instruments
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I have looked through these references, but they all seem to use C, not labview.  I am using pure labview, all graphical.

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Hi, Muffin!


After a little research, I have found drivers that could apply to your specific chassis. This link directs you to the drivers associated with the U2781A chassis, it doesn't look like there is a specific driver offered for the individual modules you are using, but within the drivers palette, there is a configure SSI VI. This VI might work with your chassis but if it does not, you can use the same format that it uses to send an SSI configuration to your chassis. 


These two links are what you can check out.

John H.
Applications Engineering
National Instruments
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