Data Display on HP 54504a Scope

[Xsis]

We are writing a VI to display the VTop and Vbase for the HP 54504a oscilloscope.  We are using the Prologix GPIB-USB controller to interface (don't think that the controller is the problem).  The VI that is attached to this message works well except that the second piece of data--the Vbase--does not display in the indicator box on the front panel.  The scope measures the Vtop and Vbase but the second parameter does not display on the front panel (Vtop does display on front panel).  Any ideas on what we are doing wrong? 

[nyc_(is_out_of_here)]

What does the programmer's manual say?

Did you get that VI from Agilent?

[Xsis]

As far as we know no one has written a VI driver for this scope, so we are attempting to write one from scratch.  From what we can tell we are using the correct programming commands.

[JÞB]

can you post the vi in LabVIEW 2011?

That's a pretty old scope there.  Why did you select it?

[Xsis]

We are a small company with a tight budget so we still use this scope model in our testing systems.  We just purchased Labview 2012 and started using it so we do not have older versions.  We have been successful at displaying the VBase, VTop, Duty cycle, Rise time, and Fall time from the scope as long as we do it one at a time.  But when we try to display more then one measurement on the VI front panel at a time we either get the wrong number or nothing displayed.

[nyc_(is_out_of_here)]

You should be able to save the LV 2012 file into an earlier version.

I only have LV 2009, so hopefully you can save it into that version.

[JÞB]

Just file>>Save for previous.  Select a version to save too in the pull-down 

[JÞB]

I would love too quote that last post by the Oquestion, just how much money are you saving by using obsolete equipment that you need to spend time and money for writing drivers. how much money will you save? Tomorrow, when the next piece of test equipment that's in your "dog-eared &tattered" shelf goes obsolete what amount of development cost can your employer tolerate without going out of business?

Upgrade. that scope could do well at a COLLECTORS AUCTION it is no longer test equipment.

[Xsis]

Here is the 2009 version.  When I run in highlight execution mode the proper measurement is shown for VBase on the block diagram.....it just doesnt get displayed on the front panel.

[Xsis]

Forgot to attach the VI above.