"First you have to go through NI-488.2 getting wizard from the National instruments start menu verify your hardware and software installations procedures and go through Measurement & Automation Explorer(MAX) and try to set the address 1 in the instrument as well as MAX, communicate with the instrument.then you can start using the instrument with labview using some examples from the GPIB section to write and read, make sure to give enough time-out 3600, and mode as 3 for example if more queries contact Regards [EMAIL PROTECTED]