Instrument Control (GPIB, Serial, VISA, IVI)

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RTS output and Visa write not in sequence

I am asserting RTS, writing and unasserting RTS, as shown below. unassert/assert state doesn't matter, RTS write is happening out of sequence.

RTS.png

 

 However on the scope I can see write starts, then RTS is asserted and quickly unasserted before write completes. I tried synch and asynch write and just put a sequence frame to no avail. VI is attached. Please help. Thanks. 

 

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Message 1 of 3
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Might want to check the following links:

 

How Can I Control the DTR and RTS Serial Lines in LabVIEW?

http://digital.ni.com/public.nsf/allkb/1ECEFAA7AD52994986256966005356EA

 

LabVIEW VISA Open/Close Session Asserts Serial DTS

http://208.74.204.114/t5/LabVIEW/Labview-VISA-Open-Close-Session-Asserts-Serial-DTS/td-p/1163857

 

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Thanks, yes, I am aware of the first link and the second link doesn't apply. The actual scope sequence doesn't match the VI/software.

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