Hi Janezh,
There is not currently an instrument driver available for the HP E1430A either on ni.com or Agilent's website. If you would like to request a driver for your device, please visit the following sites to do so.
http://zone.ni.com/idnet97.nsf/instrumentdriverrequest/
http://ftp.agilent.com/pub/mpusup/vxipnp/ifnodvr.html
I encourage you to submit a request, as National Instruments develops drivers by popular request. Submitting a form will help us prioritize our instrument driver projects. Thank you!
Regards,
Josh Hernstrom
Applications Engineer
National Instruments