As already mentioned, you should start off looking at http://www.hpmuseum.net for documentation and software for the HP 9000/382
I obtained an .ISO image of the HP-UX 9.0 installation CD-ROM there along with HP BASIC 6.2 images, both stand alone BASIC and BASIC/UX. There are currently no direct download links for those images. Jon Johnston there has been great about responding to requests for images if you send him an email. The SCSI hard drive in my 9000/382 was dead when I received it. It was fairly straight forward to install HP-UX 9.0 from scratch on a replacement hard drive from a SCSI CD-ROM. I forget how much memory mine had when I received. I found some additional memory to install and that helped with performance running HP-UX 9.0. I don't think I ever got around to trying to use HP BASIC to control any GPIB interface test equipment yet.
