Pilot Agilent 33120A with Labview

Hello,

I have to pilot a multimeter Agilent 33120 A with Labview and my problem is that I downloaded drivers here :http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=E3B19B3E9066659CE034080020E748...

I tried to test one of the example given with drivers but it doesn't work, does anybody has an idea of the problem?

Do you think it could be about the interface because i'm using a RS 232 wire and I didn't see this type of interface in the suggested interfaces on the website i gave by the link.

Thanks