A34401A GPIB problem

[parthi1987]

Hallo All,

I am trying to measure the voltage from a agilent 34401A multimeter. i use a GPIB to USB converter from agilent. I was able to communicate with this like, 2 months before with the same laptop and the same version of labview. to communicate with my PID controller, i installed Serial port driver for Labview. after i installed the serial port driver, the GPIB option is gone from the resource name drop down box.

I used agilent driver search, and saw its working properly.and I did also send and recieve some message using this plugin. but im not able to communicate with labview. like im not able to initialize only.

what should i do now?.. i need to finish this project by the end of november. please throw some light.. 

[Maxmuc]

Hi,

have you tried to install the driver again?

[smercurio_fc]

Why did you install the serial port driver? Do you have a serial interface device? I assume you are referring to NI-Serial? If so, that would have also installed NI-VISA, and most likely that would have stomped onto the VISA that was installed with the Agilent device. In order to see non-NI products using NI-VISA you need to enable Passport for NI-VISA. This is done via MAX, and is explained here: http://digital.ni.com/public.nsf/allkb/3B3626D9C1F999218625694200791AD7