Hi Lilach,
Try one more thing.
1. Open hp8753 save/Recall State.vi and go to its Block Diagram.
2. Double Click on HP 8753 Write Text to Screen.vi and go to its block diagram.
3. Can you see an Exclusive-OR Vi connected to the Extract GPIB Address.vi? OK, there you can see that the top input terminal of Exclusive-OR Vi is 1. Right?? Change that '1' to 0. Now try running the HP8753 Save/Recall state.Vi.
I personally think that top input terminal of Exclusive-OR should not be 1 or anything non-zero. It should be 0 if I am not wrong because say, if the top terminal of XOR is 1, then if your instrument address is 1, then the output of that VI will be 1 XOR 1 = 0. Hence the resource string to VISA OLD OPen vi will be GPIB0::0 which is not correct for an in
strument. hence I suggest that you change it to 0 and try running your program. Please get back if you still get errors.
Sincerely,
Sastry