Removing HP34401A driver

[jsproul]

I am trying to configure an HP34401A multimeter for use with LabVIEW 7.0, IVI 2.2 and MAX 3.1.1. Although I have the VIs in instr.lib, there is no entry for it in MAX under IVI Drivers > Advanced > Instrument Driver Software. I tried to install the .msi file downloaded from the instrument driver network, but it complained about the presence of an existing driver.

How do I remove the existing HP34401A software and reinstall it so that I can use this device?

[Makoto]

To manually uninstall the hp34401a IVI driver, look for the files in each of directories shown below, then delete them all.

hp34401a(_32).dll  - C:/Program Files/IVI/BIN and/or C:/VXIpnp/WinNT/BIN

hp34401a.h  - C:/Program Files/IVI/include and/or C:/VXIpnp/WinNT/include

hp34401a.lib  - C:/Program Files/IVI/LIB and/or C:/VXIpnp/WinNT/LIB

any files  - C:/Program Files/IVI/Drivers/hp34401a and/or C:/VXIpnp/WinNT/hp34401a

[Dennis_Knutson]

The driver that's installed with LabVIEW is not an IVI driver. To remove the old one, rename the folder under instr.lib. I said rename and not delete in case you want to use the native LabVIEW driver at some point.

[jsproul]

That did it - thanks for your help!