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PNA programming and Locked Measurement State

Question asked by SOLT_guy on Feb 7, 2012
Latest reply on Feb 12, 2012 by SOLT_guy
I own a 8753C network analyzer.

Sometimes when I run a program, the NA will remain in a locked measurement state.  In other words, when I take the load off the NA, the data trace remains in the same position.   The data trace should reflect an open when I take the load off the NA, instead my data trace is "locked" in the same state that I took my measurement in.

I use the HT Basic programming environment.

Depressing the hardkey, LOCAL, will not unlock the NA frozen state.    Even if I close my HTBASIC program, which closes the driver which is communicating to the NA, the NA may remain in a locked state. 

In programming manuals, I have noticed the use of the OPC command snippets.   The programming manuals do not go into detail about the OPC command sequence. (I hope this fact is helpful).

In any case, I am seeking a sequence of commands using Rocky Mountain Basic or HTBASIC or BASIC equivalent that will always cause my NA to become unlocked if I end my programs with this same specific sequence of commands, so that this locked state never occurs.

Can anyone help me with this issue?