Capable of conducting analog and digital measurements of cable TV
networks, the A0N00010 digital signal level meter from GAO Comm
measures the average power of the DVB-C (Digital Video Broadcasting -
Cable) signal, as well as frequency power levels. It also performs tilt,
C/N (carrier noise ratio), voltage, MER (modulation error ratio), BER
(bit error rate), V/A, and automatic channel-power measurements.
handheld meter operates over a frequency range of 5 MHz to 870 MHz and
has a signal level measurement range from 30 dBµV to 120 dBµV, accurate
to within ±1.5 dB. Spectrum analysis and channel-spectrum scanning
functions enable installation and maintenance technicians to quickly
analyze and diagnose network faults. For QAM (quadrature amplitude
modulation) analysis, the meter supports QAM 32, QAM 64, QAM 128, QAM
256, and ITU-TJ.83 Annex A/B/C modulation types. In addition, the
A0N00010 offers USB and RS-232 interfaces for data exchange.
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.