Part of the HYAMP III series of manual ground-bond testers from
Associated Research, the Model 3145 provides up to 40 A of DC
ground-bond test current for alternative-energy and solar test
Model 3145 is designed to help manufacturers comply with international
safety-testing standards, including UL 2202, UL 1703, and IEC 61730-2.
can team the Model 3145 with Associated Research’s Hypot III dielectric
withstand tester to form a complete system capable of performing the
four most common electrical safety tests: AC hipot, DC hipot, insulation
resistance, and ground bond. This configuration provides a single
connection to the DUT, and the two testers can be deployed side-by-side
in a 19-in. rack. Whether used as a standalone unit or as part of an
automated test system, the Model 3145 can be controlled manually or via
an RS-232 interface.
The instrument’s graphic LCD and intuitive
menu simplify test setup and execution. It also furnishes memory for
storing up to 10 DUT-specific test routines. Other features include
4-wire measurement and milliohm offset, electronic dwell, and CAL-ALERT
for calibration tracking.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.