trouble using the instrument driver for the "hp8753b"

[alexndr]

I am using the instrument driver for the "hp8753b", specifically the "collect and display data" driver.  I manually set my settings to the analyzer and run the VI (i.e. set start frequency to 500 kHZ and stop frequency to 1 GHz), when the VI runs with the "collect and display data" it defaults to start frequency 1 GHz and stop frequency to 3 GHz.  I have tried to modify the driver to only collect data and not to modify any settings on the analyzer but I run into errors.  Any help on this is appreciated.

[Jennifer O]

Hello,

I have installed the instrument driver you mention in your post. I am looking at the Collect and Display Data.vi, however I need more information from you to determine why your sweep is defaulting back to 1GHz-3GHz. 

When you say "I manually set my settings to the analyzer" are you making these settings directly on the analyzer? The Collect and Display Data.vi seems to read all of the settings from the hardware, I did not see any configuration in the VI.  What modifications were you making to the VI and what errors were you getting?

Can you see the range on the instrument?  If so , can you determine at which point the range defaults back to the higher range?  Running in highlight-execution mode in the VI and running NI-Spy (Start->All Programs->National Instruments->NI-Spy) to perform a capture of the GPIB commands can help to determine at what point the errors are occurring.  It will also let you see if there are any commands being sent which cause the instrument to be reset. 

Jennifer O.