Title :
Fast, real-time, DFT instrument based on VMEbus
Author_Institution :
Tektronix Inc., Beaverton, OR, USA
Abstract :
An emerging class of VMEbus-based test and measurement instruments is benchmarked by a recently introduced digital spectrum analyzer. The instrument performs real-time spectrum analysis in the DC-to-10 MHz range at 5000 spectrums per second. Its architecture is based on the VMEbus and is partly adapted for high-speed pipeline processing. The keyboard and color graphic displays suit basic spectrum analysis, as well as advanced analysis of amplitude vs. both frequency and time. The instrument provides a DSP (digital signal processing) programming environment when an RS232 terminal is attached. With addition of an RF spectrum analyzer, downconverter, and software, real-time analysis is extended to 21 GHz and beyond. Postprocessable spectral output makes the instrument suitable for use in a larger signal analysis or test system. This digital spectrum analyzer, which has 17 boards on the bus, is representative of an emerging class of filled-enclosure instruments
Keywords :
computer architecture; computer interfaces; computerised instrumentation; digital instrumentation; fast Fourier transforms; pipeline processing; real-time systems; spectral analysers; 0 to 10 MHz; 21 GHz; DFT instrument; FFT; RF spectrum analyzer; RS232 terminal; VMEbus; digital signal processing; digital spectrum analyzer; filled-enclosure instruments; high-speed pipeline processing; real-time analysis; real-time spectrum analysis; Benchmark testing; Color; Digital signal processing; Displays; Graphics; Instruments; Keyboards; Performance analysis; Pipeline processing; Spectral analysis;
Conference_Titel :
AUTOTESTCON '89. IEEE Automatic Testing Conference. The Systems Readiness Technology Conference. Automatic Testing in the Next Decade and the 21st Century. Conference Record.
Conference_Location :
Philadelphia, PA
DOI :
10.1109/AUTEST.1989.81098
