METRIX - Měřicí přístroje

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Katalog měřicích přístrojů METRIX - Chauvin Arnoux. Přenosné a stolní digitální multimetry, přenosné a stolní osciloskopy, generátory signálu, RLC metry, dekády RLC, zdroje napětí a příslušenství.

Vydal: GHV Trading, spol. s r.o. Autor: GHV Trading

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fr .metrix. An instrument with times more storage capacity allows you sample times more frequently for given recording duration./ 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.) Sampling VatacjlquvKiMbon IBMAOC) nggn position Acijutartion window Block diagram digital oscilloscope Attenuator {ADC Murray 1DAC ProceuJng ítlmtuá • Triggering Digftsl nrwbai* DAC Detailed product brochures can downloaded from www. This interval determines the "horizontal resolution". Choosing your digital oscilloscope ■ Sampling: Operation that involves measuring the instantaneous value signal's amplitude regular intervals. The vertical resolution defined the capacity bits the Analogue/Digital Converter (ADC). varies function of the sweep speed. According "Shannon's theorem", this frequency must least double the frequency the signal be observed. Because the processing digital, signals and automatic measurements can stored and the data can transferred onto a computer. ■Sampling frequency: The inverse the sampling interval, this expressed MegaSamples per second (MS/s). "Equivalent time" sampling can used achieve much higher "sampling frequencies" because the samples are taken from several successive sweeps. practice, the oscilloscope must sample frequency least times higher than the presumed frequency this signal. 1/256 0. ■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. The "useful bandwidth" will one tenth the maximum sampling rate and will expressed MegaHertz. ■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. This mode is reserved for periodic signals.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