varies function of
the sweep speed.
An instrument with times more storage capacity allows
you sample times more frequently for given
recording duration.
■Memory depth:
This expressed kilo points (kpoints) and determines
the "recording duration" according the sweep speed;
the higher is, the longer the "recording duration" will be.fr
.
According "Shannon's theorem", this frequency must least double the frequency the signal be
observed.
■Vertical resolution:
"Quantization" involves converting sample's value into binary number.
■Sampling modes:
For "real-time" "one-shot" sampling, all the samples are
acquired single sweep. This interval
determines the "horizontal resolution".
■Sampling frequency:
The inverse the sampling interval, this expressed MegaSamples per second (MS/s).metrix.
"Equivalent time" sampling can used achieve much
higher "sampling frequencies" because the samples are
taken from several successive sweeps. 1/256 0. Because the
processing digital, signals and automatic measurements
can stored and the data can transferred onto a
computer. The vertical resolution defined the
capacity bits the Analogue/Digital Converter (ADC). practice, the oscilloscope must sample frequency least times higher than the presumed
frequency this signal.)
Sampling
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Block diagram digital oscilloscope
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Detailed product brochures can downloaded from www.
The "useful bandwidth" will one tenth the maximum sampling rate and will expressed MegaHertz./
Theoretical Introduction
OSCILLOSCOPES
Digital oscilloscope
DEFINITION:
■ Digital oscilloscope
This instrument that allows you view the waveform
of periodic electrical signal (even very slow) a
function time, view single event.4% for 8-bit ADC (28=256)
■Signal processing:
Particularly useful mathematical operations between signals: +,-,* and even complex functions (Fast Fourier
Transform (FFT), harmonic analysis, etc. This mode is
reserved for periodic signals.
Choosing your digital oscilloscope
■ Sampling:
Operation that involves measuring the instantaneous value signal's amplitude regular intervals
