by Brian J Frohring Bruce E Peetz Mark A Unkrich and Steven C Bird
IN THE PAST. fast, wideband waveform recorders have not kept pace with their lower-speed cousins in measurement fidelity. Therefore, the primary design objective of the HP 5185A Waveform Recorder was superior dynamic performance, requiring careful design of all subsystems affecting measurement performance. This article describes the key considerations involved in the design of the major analog components. We also discuss the most useful parameter for verifying dynamic performance, effective...
by Albert Gee and Ronald W Young
THE ANALOG-TO-DIGIT A L converter ADC in the HP 5183A Waveform Recorder samples at a rate of four million samples per second and provides 12 bits of amplitude resnlution. The 4-MHz sample rate exceeds the minimum 2-MHz rate Nyquist rate needed for adequate characterization of input signals with 1-MHz bandwidth With 12 bits of amplitude data, the ideal signal-to-quantization-noise ratio is 74 dB and the resolution is 0.05 for full-scale input signals. Key features of the analog circuitry include...
by James L Sorden
FOR MANY APPLICATION'S, hfi Functions of an oscilloscope, voltmeter, counter, power meter, and spectrum analyzer can be provided by a single measurement instrument the precision digitizing oscilloscope, in add it inn to measurements on repetitive signals the generally assumed condition with conventional measurement instrumentation , the precision digitizing oscilloscope can make measurements on transient or single-shot signals, signals often impractical to analyze with conventional measurement...
by Patrick Deane Simcoe Walmsley Jr and Farid Dibachi
CUSTOM INTEGRATED CIRCUITS in the analog signal path make the superior measurement performance of Lhe HP 5185 A Waveform Recorder possible. As integrated circuits deliver higher levels of performance, particularly at high frequencies, greater care must be taken to ensure that this performance is not squandered by component packaging. The fundamental objective of the packaging scheme used in the HP 5185A was to achieve maximum performance from the custom chip set, taking into account not only...
by Rayman W Pon Steven C Bird and Patrick D Deane
ANY l.IMITED-TIME-DURATION measurements counter with a very short gate time, the spectrum of an RF burst, the energy of a transient spike is poorly made if it includes parts of the signal not relevant to the information being measured. Waveform recorders solve this problem by providing the ability to make measurements over limited, controllable periods of time, This article examines how the design of the HP 5185A Waveform Recorder digital hardware provides the ability to capture and focus upon...
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Editor. Richard P Dolan Associais Ediior Business M nager Konnelh A Shaw Ari Director Phoiograptier. Arvid A Dan.atson Suppcirr Supervisor. Susan E Wr.ght Administrative Services. Typography. Anne 5 loPrdsri European Production Supervisor, Micha a andwi ken ci Htfwiett-Packjira Company t9BH Primad .n US FESRUARY 19BB HEWLETT-PACKARD JOURNAL3 That most basic of electronic instruments, the oscilloscope, has gone digital in a big way. The 1988 Hewlett-Packard Test and Measurement Catalog doesn't...