... 3. Loopback, LAN, DMM, Webpage test 4. USB upgrade ST330 VDSL TesterIntroduction ST330 is designed for present all kinds ... WINCE display and touching operation for user’s easy operation Remote software upgrade Link to USB equipment, keyboard, mouse ... the tester, memory key and PC Help System Software Upgrade Function Set Screen Recalibration Tenical Specifications Chip Set: Globespanvirata ...