Questions tagged [oscilloscope]
A piece of measurement equipment which can visualize one or more signals simultaneously on a time scale.
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Oscilloscope or bench multi-meter for ultra high sensor sample rate measurement
I need a device to measure the output of a load cell at very high sample rates. I am aiming for a sample rate of at least 100 kHz. For this goal, I wanted to ask if it would be better to use a bench ...
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How to measure the waveform of a piezo igniter?
Is there a (cheap) way to measure the pulse of commercially available piezoelectric igniters like those used in lighters or BBQ grills?
I use them as a cheap (and very crude, for sure) method for ESD ...
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sniffing a 32.768kHz low-power oscillator
I'm troubleshooting a real-time clock and suspect that under certain conditions the oscillator stops. How could I check if it is running, especially when the RTC chip is on battery power? It is Maxim ...
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Figuring out communication protocol
Complete beginner trying to learn by doing here...
Background:
I have a wine cooler (for beer) that I want to remote control the lights on by adding a microcontroller.
I'm planning on using a ESP32 ...
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Sawtooth wave in oscilloscope instead of a square wave
I am trying to observe I2C lines coming from an Arduino using a cheap oscilloscope (6022BE-25MHz.)
The signals I see do not resemble a square wave - it looks more like a sawtooth wave.
Does anyone ...
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Can I use a multimeter to measure the capacitance of my oscilloscope?
I'm trying to measure inductive (not RF) reception in a short-range PKE coil antenna, and that requires a tuned circuit and outputs very low voltage.
Does it make sense to measure my oscilloscope ...
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Guidance for making wide-bandwidth X1 scope measurements
I am making current measurements from a current-limited power supply. I'm currently using a 0.10 Ohm shunt with a X10 scope probe connected directly across the shunt. This connection uses the ...
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Questions on building probe station and pulse measurement
I don't have a strong ECE background, so I may ask many naïve questions.
I am building a probe station to measure pulses in a micro-coil, which looks like the following circuit.
Because I want to ...
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Preventing oscilloscope magic smoke by inverter vs isolation transformer? Good idea or not? [duplicate]
There was another question that said that an isolation transformer had to be used to prevent possible damage to an oscilloscope, and I suggested this as a solution, but never got an answer. This ...
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Oscilloscope safety, measurements for safe probe ground connection [closed]
I have several oscilloscope safety-related questions. The questions come after a bit of background information. Please let me know if you think there's something iffy with the background information. ...
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Is filtering useful here, and if so how to choose the value(s)?
Simple question of this project:
Is filtering useful here, and if so how to choose the value for L1/L2/L3 - especially L1?
simulate this circuit – Schematic created using CircuitLab
Context
...
user201301
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Is it possible to amplify an AC low level signal with a simple DC source?
The project has an input from -1V to +1V for input. I need a linear 0 - 5Vpp output with the same wave frequency (60Hz).
I tried this (and other configurations), but never get the output I need.
I ...
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How to test for PCB ground being pulled up to 2V when connected to RS485
I am currently trying to find an easy way test to diagnose a problem on some of our PCBs where the ground of the PCB is being pulled up to 2V's.
The Board
Simple modular RS485 sensor board. The main ...
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Unable to stabilize waveforms on oscilloscope
As part of my hobby, I wanted to design and understand a circuit involving an op amp inverting summer followed by a multiple feedback bandpass filter.
The goal was to feed two signals, one 250mV peak ...
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Can an oscilloscope be used as an EKG?
I was at my doctor's office and noticed an EKG machine that looked like a standard oscilloscope. In fact, its case was almost identical to my dual channel Tektonix 1104b. The main difference was that ...
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Connect probe properly to measure 230 VAC with oscilloscope
I just got this combined multimeter - oscilloscope Hantek 2D72
Link to manual:
https://www.circuitspecialists.com/content/476383/HANTEK2D72_Manual.pdf&ved=...
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Maximum input voltage to measure in multimeter/oscilloscope
I'm about to buy a Hantek 2D72 combined multimeter - oscilloscope.
In the specs it says:
Input: Maximum Input Voltage 150VRMS
DMM:
Maximum Input Voltage
AC : 600V
DC : 600V
Maximum Input Current
...
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Understanding ground when using a USB vs a benchtop oscilloscope
I am trying to understand how a USB oscilloscope can furnish a proper ground from which to take measurements.
If I'm not mistaken, my benchtop scope which is powered by my wall outlet at AC 120V, has ...
user205820
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What does "Vpp" mean in terms of generated and measured waveforms?
I'm using a Keysight "EDUX1052G" oscilloscope (with built-in wave generator) to drive a red LED through a 470 ohm resistor. (I'm taking great care to keep the current draw on the wavegen to ...
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Oscilloscope low side connection
I am taking an introductory circuits class where we are learning to measure resistances. I recently measured the resistance between the low-side of an oscilloscope and earth ground on a power supply ...
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Astable multivibrator malfunctioning on circuit board
Here is the circuit that I've built on my project board (GL-12)
Here is a schematic:
Note: I'm using BC107B transistors instead of BC547 as they are quite similar.
To test the circuit, I added two ...
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Using a DSO138 digital oscilloscope to probe a circuit
I'm new to using a DSO138 to probe my circuit.
In order to get the square waveform on my DSO for an astable multivibrator, do I need to connect a jumper wire from the collector of a transistor of the ...
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How to accurately measure ~1 A on 3-30 MHz?
I would like to measure the efficiency of an HF (3-30 MHz) class C power amplifier. In order to do this, I have to accurately measure AC+DC RMS current in the order of 1 A or so. Most instruments are ...
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Sniffing a CAN Bus with strange behavior
I want to sniff data from a CAN Bus where are nodes using these parts:
1 - 18F24K20 - Microcontroller
2 - VP233 - CAN Transceiver
3 - 78L33A - Voltage Regulator
These nodes are sensors that detect ...
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Viewing 100-200ns pulse on oscillocope
I've recently bought a Gould OS300 dual trace 20MHz oscilloscope.
I'm trying to view a 100ns to 200ns pulse, but I'm not sure I'm using the correct settings.
The pulse voltage goes from 3.80V to 0V so ...
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Create a 4, 8 or 16 MHz signal
I have 4 MHz, 8 MHz and 16 MHz oscillator crystals. I just got a oscilloscope and will like to see this high frequency signals on the scope. This is the circuit I built:
I got that from this video ...
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How can I match a transmission line impedance on the source side?
Suppose that I want to transmit a signal by a coaxial cable to a high-impedance load.
The signal is a single-ended TTL (3.3V) single square impulse from an FPGA output. The package of the FPGA is LQFP-...
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Should a UART serial transmission look like this?
I am trying to write simple AT commands with a UART connection from my MCU (just RXD and TXD at the moment) and am looking at the transmissions on the oscilloscope and trying to make sense of them. ...
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Looking for feedback on Bitscope BS50U. Is it an old design, no longer maintained?
I need an entry level, very basic oscilloscope with some logic analyzing features. Bitscope BS05U (http://bitscope.com/product/BS05/) is back in stock at Newark for $55.69 and I'm thinking about ...
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Why does this hysteresis curve approach saturation so immediately?
I am trying to find out the hysteresis curve of a transformer iron core. I use an LM741 for the op-amp integrator.
As I increase my 50Hz input voltage, I observe that Vin (value on the x-axis) does ...
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Hysteresis curve's Y axis seems to be primarily measuring the DC dual power supply of the opamp integrator
I am trying to find the hysteresis curve of a transformer's iron core.
The curve looks good, but I do have a doubt:
The LM741 op-amp integrates the output voltage signal from the transformer's ...
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Connect scope probe directly to (phase) and (ground or neutral)
I've been reading about how to connect an oscilloscope to the mains power so I could see its waveform, but I'm confused with the answers.
I read I could just use some transformer and see the waveform ...
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Multimeter resistance reading bounces placed between earth ground and bench PSU
I'm a total beginner trying to understand how not to blow up myself, scope or meters. I cannot figure out if probing around on a device powered using either of the two DC bench power supplies I have ...
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Grounding concept for an electrical machine test rig
I'm tasked wich building a test rig for electrical machines which consists of
Machines mounted on top of a large ground plate which is connected to PE through a thick cable
A torque transducer: The ...
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When these prototype devices become commercialised/productionised, how is the signal processing aspect of the oscilloscope built in to the device? [closed]
I read a lot of research papers that use large and expensive equipment, such as oscilloscopes, to do their signal processing. Oscilloscopes offer high sampling rate and bandwidth, which makes them ...
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Can anyone suggest what is wrong with this oscilloscope?
I just got my hands on a new (to me) scope. It is a fairly basic B&K model, analogue, 2 channel, 30 MHz. It seems to be in good shape. It was not expensive, so I don't have high expectations.
It ...
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How to connect the output of the 555 in monostable mode to an optocoupler?
I currently have the following schematic for my circuit:
Link to the simulation.
On the simulation everything is working pretty good. The output of the 555 which is in monostable mode is giving ...
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Measuring AC voltages with battery-powered oscilloscope
I'm wondering if I can view only for few seconds the waveform of a small transformer on my DSO.
It can handle up to 800V according to the manual (transformer outputs are 100V maximum.) From what I ...
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Probe specific performance on oscilloscope - offset
I have been having a weird unexplainable issue with my set-up. I am currently testing a flyback converter with a current sense source resistor. The scope shows a DC offset when using two different ...
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What is this Digilent Analog Discovery device doing in this experiment?
I'm a novice to electronics, and I was wondering if someone would clarify an experiment I just witnessed. A photodiode was set up to receive some signal. This signal is then read by a transimpedance ...
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How does this circuit generate a high frequency signal?
I am new to electronics. I am watching this video.
At 5:37, you can see the first half of the circuit generate a high frequency signal.
How do an op-amp, 9 VDC, and a few resistors generate a high ...
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Touching oscilloscope probe tip
When I touch the positive end of the oscilloscope probe without touching the ground, I see the following waveform on the screen. The Vpp is around 45 volts as shown in the picture below:
When I touch ...
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Tektronix oscilloscope setting to auto-scale waveform ranges?
Does anyone know if there is a setting on the Tektronix TDS 2014 oscilloscope that I can set that will individually, auto scale each of the different waveforms so that none of their peaks will ever go ...
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High voltage ripple measurement using a 1000:1 probe
I am measuring the DC voltage ripple at 400V provided from CAEN DT5534EM by connecting the output to the oscilloscope (AC coupling) through a 1000:1 probe. From the picture below, the ripple is around ...
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What is the purpose of oscilloscope-probe-to-BNC adapters?
What are these adapters used for?
(Image off Google, source)
They fit over the tip of a passive oscilloscope probe, like this:
(Image excerpted from https://www.caltestelectronics.com/public/...
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Hysteresis curve does not look like what is expected on the oscilloscope
update: Based one the comment from @Andy aka, I tried to obtain the curve without using the integrator. It does give me a better looking graph.
Afterward, I switched the power supply to another larger ...
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Siglent SDS Oscciloscope VISA disconnection
I'm currently connecting my Siglent SDS1202X-E Digital Storage Oscilloscope to my lab PC using a USB cable. I took advantage of the VISA interface that it has and used PyVISA package to write script ...
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How to set up an oscilloscope with a 10000 turns 0.05A transformer and an AC power supply, in order to generate a hysteresis curve of the transformer?
I am a high school student investigating how varying the current output affects the shape of the hysteresis curve of a transformer.
To measure the hysteresis curve of the transformer's core, I tried ...
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Oscilloscope impedance mismatch issue
We have connected an oscilloscope and a function generator using a connector plate. We have terminated the signal connections from the oscilloscope & the function generator to the connector plate ...
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How to debug 100BASE-FX, 100BASE-TX, 1000BASE links
I have pretty complex board which has few media-converters on it (fiber to copper), also some high-speed links like 1000BASE-TX, SGMII etc. (a lot of different ICs), and some times I've problems ...
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