Calling IBDEV

[jaysmall]

I am trying to write a simple driver for an HP 8757D Spectrum Analyzer. I have seen that many people have already tried this to no avail. This is because the system locks up after anything is read off of the Analyzer's ouput buffer. You can actually even notice the screen of the analyzer itself freeze.

I have noted that the system can be thawed by creating a new interactive session in MAX, which calls the IBDEV function. I believe that I can unfreeze the system if I can call the IBDEV function in Labview. The only problem is, I'm not sure what the actual command is to call that function. Can anyone help me out with that?

[smercurio_fc]

This to me implies that you are not performing the read correctly or completely. Most likely it's a termination byte. I've seen this with other instruments where after you've read all the bytes it says it has, there's still an additional termination byte, usually an EOL byte, like a linefeed.