Helpful tips

How do you calculate oscilloscope resolution?

How do you calculate oscilloscope resolution?

Oscilloscope vertical resolution Resolution is generally quantified by the number of bits in the analog-to-digital converter (ADC). The resolution is equal to 2 raised to the power of the number of bits. As such, an 8-bit converter has a resolution of 28 or 256:1.

What is the resolution of an oscilloscope?

An Oscilloscope with an 8-bit ADC has a resolution of 3.125 mV (800 mV/256 Q levels), while a 10-bit ADC has 0.781 mV. Each Oscilloscope can only resolve signals down to the smallest Q level. To get the best resolution, use the most sensitive vertical scaling setting while keeping the full waveform on the display.

What measurements can you make using an oscilloscope?

Ten Measurements Using an Oscilloscope

  • 1) Measuring and Viewing Voltage Waveforms.
  • 2) Measuring and Viewing Current Waveforms.
  • 3) Measuring Frequency.
  • 4) Measuring Rise Time of a Pulse.
  • 5) Measuring Capacitance.
  • 6) Measuring Amplifier Gain.
  • 7) Measuring Cable Length (TDR)
  • 8) Measuring Differential Signals.

What is the sampling rate of oscilloscope?

One of the banner specifications for any digital oscilloscope is the sample rate, which is quite simply equal to 1/ts. Sample rates for the highest performing Tektronix oscilloscopes are now in excess of 100 GS/s per channel.

What is Wfms?

Abstract – Waveform refresh rate, also known as waveform capture rate, refers to the number of waveform refresh per second, the unit is waveform number per second (wfms/s). Waveform refresh rate is an important indicator to measure the performance of oscilloscope.

What are the standard specifications of CRO?

Vertical Deflection System

  • Sensitivity in 1, 2, 5 sequence : 5 mV/cm to 10 V/m.
  • Band width : DC to 15 M Hz.
  • Rise Time : 24 ns.
  • Accuracy : ±3%
  • Max. Input voltage DC + AC peak : 400 V.
  • Input Impedance : 1 M/35 pF.

What is oscilloscope bandwidth limit?

BANDWIDTH. System bandwidth determines an oscilloscope’s fundamental ability to measure an analog signal – the maximum frequency range that it can accurately measure. What you need. ∎ Entry level scopes will often have a maximum bandwidth of 100 MHz.

Can an oscilloscope measure resistance?

There are a few ways to use an oscilloscope to measure current; one would be to measure the voltage dropped across a shunt resistor. The other is to simply use a current probe.

Can oscilloscope measure frequency?

Oscilloscopes measure the voltage of an electrical signal, which is then graphically represented by waveforms. However, an oscilloscope can be used to take measurements for a number of different applications – one of which is frequency.

Is 100MHz enough for oscilloscope?

The most obvious factor when choosing an oscilliscope is bandwidth. These two numbers are related, and most people know that the samples per second needs to be at least 3-5 higher than the bandwidth for accurate results (meaning a 100MHz scope should have ~500Ms/s, or even better 1GS/s for reliable results).

How do I choose DSO?

Important Parameters in Choosing an Digital Storage Oscilloscopes (DSO) – Part 2

  1. 2.2 Artefacts, invalid digital data.
  2. 2.3 Resolution and accuracy.
  3. 2.4 Reconstruction problems.
  4. 2.5 Z-axis.
  5. 3.1 Use a Combiscope.
  6. 3.2 Change the time base setting.
  7. 3.3 Watch the digital numerical displays.
  8. 3.4 Change the signal if possible.

What is the range of CRO?


Operating mode Y 1, Y 2, ALT, CHOP, ADD, X-Y
MAG Rate x5 Error < 5%
Frequency Bandwidth AC: 10 Hz~30 Hz-3 dB DC: 0~30 MHz-3 dB
Frequency Bandwidth by MAG AC: 10 Hz-5 MHz-3 dB DC:0~5 MHz-3 dB
Rising time

What are the characteristics of a high resolution oscilloscope?

Here are the characteristics of some of the resolutions available: Accuracy is not regarded as important for most oscilloscopes. You can make measurements within a few per cent (most DSOs quote 3% to 5% DC accuracy) but for accurate measurements you have to reach for a multimeter.

How is the resolution of an instrument related to accuracy?

Resolution The resolution of a measurement system is the smallest yet to distinguish different in values. The specified resolution of an instrument has no relation to the accuracy of measurement.

How is peak detect acquisition mode used in oscilloscope?

Peak Detect Acquisition Mode: Quickly find waveform anomalies > 50 ps wide that occur between samples at slow sweep speeds. See if a waveform is aliased. Use for single-shot waveform events. For periodic waveforms, normal Averaging can be used to reduce the noise over several triggers.

When to use peak detect mode in scope?

In the Peak Detect mode, the scope would analyze a group of 200 consecutive samples in real-time (sampled at a high rate), and then store just the maximum and minimum digitized values for this group of 200 points, which is just 2 points. This would be a decimation factor of 100. So you may ask, why not always use the Peak Detect mode?