A piece of measurement equipment which can visualize one or more signals simultaneously on a time scale.

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42 views

Red Pitaya Software Costs

According to marketing, the measurement apps for the Red Pitya are open-source. Nevertheless, they charge 50EUR for the Oscilloscope/SignalGenerator app in the store. They also have a repository on ...
1
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1answer
84 views

IR2110 - measuring Vb to Vs kills MOSFET

I got a new digital oscilloscope as a gift. As a training course, I observed some waveforms of my test 12V full bridge circuit that is driven by TL494 and two IR2110 operate the IRF3710 100V mosfets. ...
4
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1answer
726 views

Using Oscilloscope So That Nothing Blows Up

I want to see the input current waveform of an LED T8 18W. An EM ballast is purposely placed in series with the lamp. I don't have a power analyzer. What's available is a GDS-2102 oscilloscope. So I ...
1
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1answer
80 views

Which one is more accurate: Digital oscilloscope or Analog oscilloscope?

I know it is some sort of wide question, but nowday I usually only see digital oscilloscopes around. I want to know if their digital nature will affect the accuracy of measurements? (Something like ...
1
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0answers
66 views

Oscilloscopes - Comparing Traces

I'm new to Oscilloscopes and so this question may be a simple one. We have a Rigol DS1104Z Oscilloscope and would like to compare the same point in the circuit at different times as the voltage ...
-4
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1answer
55 views

How to connect “violet ray” electrotherapy device to oscilloscope? [closed]

I'm currently working on analysing the frequency and voltage of a "violet ray" electrotherapy device. I want to use a high voltage probe and an oscilloscope. How do I connect the two?
6
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2answers
120 views

Probing with Oscilloscope Stops ADC Fluctuation

I've gone back to my constant current project to fix an annoying fluctuation in the required current display. See schematics below. The entire circuit consists of a CCS section with signal outs for ...
1
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3answers
99 views

Would you prefer a voltmeter or a scope when measuring average voltage precisely?

As far as I understood the DC setting of a voltmeter or a multimeter is measuring the average value of a periodic voltage signal(not rms but the average value). On the other hand, an oscilloscope as ...
3
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2answers
64 views

DIY DC Blocking Capacitor for oscilloscope

I'm studying switching converters and want a bench setup that will allow me to reliably observe the various voltage waveforms (output, inductor, switch) on my oscilloscope. I discovered pretty ...
3
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1answer
77 views

Would you explain the output waveform of this FM transmitter circuit?

I build this circuit and it works. I wanted to look at the output waveform by my soundcard oscilloscope software. I would expect something like the following picture: But the output waveform was ...
5
votes
2answers
246 views

What is the impedance limit for using 10X probes with oscilloscopes?

I thought 10X probes are only used for impedance matching at high freq. circuits. But I read in a text that they are also used in high impedance circuits to prevent loading. But isn't a scope's input ...
1
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3answers
114 views

What are the essential properties of a PWM signal that can be captured with an oscilloscope? [closed]

My question is regarding general guidelines when it comes to using oscilloscope captures in a professional-grade report to be presented to people working with signal processing, embedded systems, etc. ...
0
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4answers
62 views

Oscilloscope and main earth reference

I have AC/DC 3/6/12V out universal adapter with two pins (without earth connector) and would like to use it for powering my arduino project and playing with oscilloscope. Knowing that my oscilloscope ...
0
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1answer
48 views

Understanding Resonant Frequency in a Series RLC Circuit

After spending a couple of hours on the internet searching for answers I'm hoping Stack Exchange can help me. Recently, using simulation software, I used an oscilloscope to calculate the resonant ...
4
votes
2answers
315 views

How to generate high frequency clock with high stability from a microcontroller?

I am using TivaC launchpad TM4C123G microcontroller, to generate a clock of 40 MHZ but I tested it on the oscilloscope and it doesn't look like a square wave it's more like a sinusoidal here is a ...
1
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2answers
118 views

Questions about sound card scope software?

This is a popular software for those people who don't have a real oscilloscope or function generator: https://www.zeitnitz.eu/scope_en If anyone tried it before, would you answer my questions, ...
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votes
1answer
114 views

Building a low-cost oscilloscope and a function generator [closed]

I want to build an oscilloscope and a function generator as a graduation project in my university. Cost should not exceed 125$ or 250$ if the project has more additional features. I will display ...
0
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1answer
33 views

transformer waveform

Can you see the output waveform of this transformer across it's terminals if neither is tied to ground ? I assume it follows the input waveform in shape but if there is no zero reference would it ...
0
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1answer
98 views

Measuring Q and Bandwidth of an RLC series circuit using Oscilloscope

I have a HNC Lab assignment coming up. As part of the prep for the lab work we have been given an RLC series circuit for which we had to calculate some values such as volt drop , Wn, Q and Bs, which ...
3
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2answers
58 views

Emulating Old Tektronix Coded Probes

I've got an older Tektronix 2430 100MHz oscilloscope. The older probes are "coded" and according to the manual are supposed to automatically select the proper scale based on the probe type. My last ...
0
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1answer
81 views

LM311 Circuit only works when probe is attached

I'm trying to put together a circuit that takes a signal from a sensor, cuts out the negative side, compares it to a reference voltage and outputs a digital 1 when above the reference voltage. That ...
0
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2answers
67 views

Why does capacitive loading occur when using passive oscilloscope probes?

I was recently reading an article written about oscilloscope probing. And at one paragraph there is a comparison between active and passive probes as in the below quote: "For high-frequency ...
0
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2answers
63 views

UART is acting weird

I programmed UART3 peripheral on LPC4088 to send a single unsigned character posiljka over Tx line. This is done by continuously copying this character into the ...
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3answers
106 views

Oscilloscope measuring different voltages “across” the components when two probes are used

I'm having problems displaying two channels simultaneously on an oscilloscope when both probes are connected to measure voltages "across" the components. To demonstrate the problem two resistors are ...
3
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2answers
97 views

Isolation transformer and AC potential between grounds

Wisely (I think) after connecting my DUT (Tektronix 2710 Spectrum Analyzer) to an isolation transformer, I measured AC voltage between the DUT chassis ground and my scope (Tektronix 2440) ground lead. ...
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2answers
34 views

HP8116A Function Generator Signal Problem

I'm trying to use a function generator HP 8116A and an oscilloscope Tektronix TDS210. When i connect the probe to trigger output of function generator, i can observe the square wave correctly. ...
1
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2answers
115 views

Why would a 150 MHz probe work fine for a 100 MHz oscilloscope?

I read in many forums that one can use a probe with a higher bandwidth than oscilloscope's bandwidth. If it is right why it is not a problem? What is the theoretical explanation?
0
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1answer
82 views

Oscilloscope as monochrome bitmap image viewer [closed]

Iam a beginner in arduino and other open source platform programming and I came across a DIY project which involves using oscilloscope as an image viewer,but this project involves ATmega16 AVR IC1 ...
15
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3answers
996 views

What kind of oscilloscopes are qualified for measuring USB 3 Super Speed Signals?

I understand that they probably will be very expensive. But I have little idea of what kind would qualify. How much bandwidth? At what sampling rate? Any other parameters?
10
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5answers
2k views

How can I view USB traffic on an oscilloscope?

I'm trying to examine the communication of a USB mouse with an oscilloscope (PicoScope 3204). When I connect the scope's ground to one of the two data signal lines (Data+ or Data-) the mouse shuts ...
2
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0answers
64 views

Oscilloscope for SFP+ Host Board Compliance testing

What major criteria should I consider when buying an oscilloscope to test compliance for an SFP+ host board? Examples would be helpful as well. I am looking for a high-end product since this is for ...
1
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2answers
66 views

Quick safety question probing 120VAC

I did read several questions about safely probing high AC voltages with an oscilloscope. I had been taught to isolate the scope, which I see now is dangerous. So I think what I should do is then ...
1
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2answers
82 views

Is using a high sample rate on an oscilloscope ever a bad thing?

A while back i was gathering some ECG data for a colleague at a reasonably high sample rate (around 20kHz - 100Hz is enough for ECG). She came back to me and asked me to regather the data at a lower ...
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2answers
197 views

How does the internal resistance of oscilloscope compare to that of the DMM? [closed]

Both are the instruments that measure voltage, so what are the difference between multimeter and oscilloscope in terms of their internal resistance ?
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1answer
133 views

Does the Rigol DS1054Z have a “integrated 2 channel waveform generator”?

I'm seeing that this device lists, on Amazon, as having "and integrated 2 channel waveform generator" Does it have a waveform generator? And, if so what is the difference between a waveform ...
3
votes
1answer
68 views

Why does inserting a resistance in the common of my scope probe cause it to pick up AC noise so much worse?

I'm poking at the inside of a USB oscilloscope, with the hope of modifying it so that the scope probe commons can be referenced to different voltages. When I use my USB oscilloscope to measure a 24V ...
3
votes
2answers
122 views

As a hobbiest with trying to learn what exactly would a bench oscilloscope do for me? [closed]

I'm overwhelmed by all the stats and options out there and I'm not exactly sure what I would even do with one as a day to day basis. I have a little dso138 kit that I can see simple waveforms on ...
0
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0answers
46 views

Noise in Sound Card Oscilloscope

I have created an oscilloscope by following Instructable. I am getting signal but I am getting noise. Too much noise. Is there a way to minimize this? I am using any shielding. If I should use, please ...
3
votes
1answer
86 views

Sine wave distortion in simple op-amp circuit- bypass capacitor?

I've built a simple unity-gain buffer op-amp circuit from the UCSB lab here, with a 12V power supply and a 1V, 1 kHz input sine wave. simulate this circuit – Schematic created using ...
3
votes
1answer
166 views

How can I use an oscilloscope to measure voltages that are referenced to nodes several hundred volts apart?

In my organization, we often use four-channel oscilloscopes to check out products. Each probe reference might be several hundred volts away from the others, which makes using standard scopes ...
0
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1answer
107 views

Detecting 2.4 GHz signals using oscilloscope [duplicate]

I have used a spectrum analyzer with an antenna to see packets at 2.4 GHz being transmitted from my transceiver successfully. There was a mode in the spectrum analyzer which helps you to take a look ...
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2answers
95 views

How might one connect a laptop's aux out to an oscilloscope?

I am using an online pure tone generator (which generates sinusoidal sound waves) on my laptop to output sound. The AUX-out jack on laptops outputs sound in analog rather than digital signals. Unless ...
0
votes
2answers
126 views

How to measure RF power with an oscilloscope?

I'd like to measure the RF power coming from an RF amplifier using an oscilloscope. The signals are sinusoids with a frequency of 50-120 MHz. The maximal power coming from the amplifier is 20 W, ...
1
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1answer
77 views

CE Amplifier voltage gain is not as calculated

Am trying to learn from what i read by simulating a common-emitter-amplifier using 2N3055A that has Bdc(DC Current Gain) of 20 - 70. I fallowed the steps below but the Voltage gain is not even close ...
2
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1answer
81 views

NE555 speaker voltage spikes

I made a NE555 circuit with speaker. It works fine, but when I connect its output to the oscilloscope, I get this view: How could I reduce these voltage spikes? How can I get nice square waves? Or ...
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votes
3answers
49 views

Oscilloscope noise detection from VFD ~50V peak to peak

When I connect one lead of an oscilloscope to the frame of a machine (grounded) I see a +25 to -25V DC spike happening at about 12kHz. I suspect this is being generated by a bad ground either in the ...
0
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0answers
30 views

Can I use a Buffer Amp to Isolate Probe Loading on my Circuit?

and thank you in advance for the hand-holding. I was troubleshooting a very small and noisy signal in a circuit and the concern of probe loading came up... I only have access to affordable passive ...
0
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1answer
401 views

can't get an oscilloscope visualization window in proteus 8

I've installed Proteus 8 and began to work with it. I've built a primitive circuit with oscilloscope. At first time visualization window (with graph of signal) was being got. I closed this window and ...
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1answer
94 views

Is my oscilloscope affecting my tuning circuit?

I am building an AM Radio and I have constructed a tuner circuit. See below. simulate this circuit – Schematic created using CircuitLab However, I cannot use this circuit, because even ...
1
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0answers
67 views

Full wave bridge rectifier min volt is not zero in multisim oscilloscope

I used Multisim for a Full-Wave bridge rectifier, using 1N4007 diodes and 1K R-load. The problem is the Min voltages its not Zero, but goes as high as 3V. But when I used RMS voltage source instead ...