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

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1answer
35 views

Ground Plane Noise?

I have some noise issues on a PCB that I am having a hard time troubleshooting. Below are pictures of the schematic as well as 2 scope traces. The first trace shows the amplified signal with the noise ...
2
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1answer
27 views

Measure propagation velocity through finite transmission line

I'm currently trying generate a wave in a circuit but am running into the issue of figuring out exactly how to measure the propagation velocity. The circuit diagram is below L1=L2=L3, C1=C2=C3, ...
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17 views

Multiple Oscilloscope measurement in Multisim with small Variance

I have a design that consists of several stages, it's Dual DC Regulated DC power supply, using transformer, bridge rectifier, capacitor filter and regulator. We add the components one by one and each ...
0
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0answers
32 views

Oscilloscope Tektronic MDO 3034 Digital and Analog channel synchronization issue

My oscilloscope becomes really slow whenever I measure (direction and steps) digital signals from two stepper motors. This slowliness happens after I "zoom out" on my oscilloscope (e.g., make the ...
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2answers
55 views

How does an electron beam move in XY mode?

I was recently observing some Lissajous figures on an analog scope in XY mode . I was wondering how does the electron beam move . I know it should move from left to right but I find it difficult to ...
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1answer
70 views

Test 220V 50 Hz signal using oscilloscope [duplicate]

Can I test a direct electric signal wave AC 220V 50 HZ using an oscilloscope in safe mode and the schema for this testing. The description in my oscilloscope say that the input AC pk and DC is Max ...
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1answer
64 views

AVR BASED USB OSCILLOSCOPE [closed]

I want to create a simple oscilloscope that uses an AVR microcontroller to take the input and provides the data to the computer through the USB port. The data is to be analysed by the computer. Can ...
1
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1answer
39 views

Stray Capacitance in my load waveform?

I have just taken this trace of my Loadwave form for PWM controlled halogen dimmer. I was wondering if anyone could identify the cause of the transients below or above zero volts for each polarity. ...
6
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3answers
910 views

First checks after oscilloscope unboxing

You bought your first entry level oscilloscope (e.g. Rigol DS1004Z series, 4 Channels, 50-100MHz, 1Gs/s) and while it is slowly warming up to room temperature you are wondering if the unit you have is ...
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4answers
345 views

About Oscilloscope Probing Philosophy

Recently, I read Tektronix's Probe Bandwidth Calculations. It point out that Tektronix and Agilent have different probing philosophy: There are two schools of thought on what an oscilloscope probe ...
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4answers
730 views

Audio signal trying to go back to zero zeroes

I created a two differrent signals on my android phone, one to act as the clock signal (lower signal), and the other to be the data signal (lower signal), but the problem is that the audio the signal ...
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1answer
76 views

What happened to my second half cycle of my half wave rectifier?

When I'm doing a simple half-wave rectifier with the set-up as shown above (Note: Diode D2 is not connected) and connected terminal 5 and 4 with positive and negative terminal of oscilloscope, this ...
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1answer
51 views

How to use an oscilloscope with a function generator?

I am taking a digital electronics class and I am utterly confused. I am using Multisim to design circuits, and for one of my labs I had to use a function generator with a oscilloscope. Here is a ...
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1answer
88 views

Question about op amp DC offset [closed]

I need help explaining why I am getting such a large DC offset across the output for my op amp. I am using an OPA548 to amplify an AC signal and then drive a solenoid shaker. I have the circuit ...
0
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3answers
77 views

Amplifying a 100mV range (sinosoidal wave) to a range of 0 - 3.3V for the Arduino

I have a partial discharge wave form which varies between -100mV to +100mV. For simplification, I am using a sinusoidal wave with that range. I need to amplify and bias this signal between the range ...
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2answers
71 views

Oscilloscope Output with its positive terminal touching human's body and negative terminal left open

it once happened that when I touched the positive terminal of the Oscilloscope input probes letting its negative terminal open, I observed sinusoidal voltage signals with 0.5V peak to peak and of ...
2
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1answer
236 views

Using oscilloscope to measure voltage across a resistor

I have a board which is powered by a 5V PSU. I needed to measure the current flowing into the processor for computing power. Since there was no resistor that I could find in the path from the supply ...
0
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1answer
70 views

AC->DC Power supply ground and probing

I'm learning electronics and I have an old C64 power supply which was made at our local electrical shop back in the 80s. I'm taking a look at it to try and understand how it works. What I don't ...
3
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3answers
358 views

Questions about advanced use of oscilloscope

At my university, I'll be using the ELENCO S-1325 oscilloscope for a instrumentation lab. Since I'm a mechanical engineering student and not an electrical engineering one, I don't know exactly how ...
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1answer
34 views

collecting Sample points on the oscilloscope

I am using a 1.5GHz bandwidth and 20GSamples/sec oscilloscope to measure a signal. The measurement is TDR(Time Domain Refelctometry) I would like to collect the raw data from the oscilloscope. How ...
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2answers
103 views

What is the source of leakage current thru an isolation transformer?

I want to use my oscilloscope to check the cleanliness of the output a high-voltage power supply (electrophoresis type, up to 3000 volts DC). I built a 100:1 voltage divider (out of 2 resistors - ...
0
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2answers
109 views

Plugging in an oscilloscope in a land of non-grounded outlets

Background: I have only one outlet in my house that remotely approximates a proper equipment grounding conductor (it's bonded to the mains ground point via the armor of 50s vintage AC, which is better ...
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1answer
100 views

Bitscope DC Offset

I had an old Tektronix scope for a few years that finally gave out. I recently purchased a Bitscope, but it seems to be having some problems. I have connected the function generator to channel A, and ...
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1answer
131 views

What signals can be probed with an oscilloscope on an Arduino board?

I got my hands on 35 MHz analog oscilloscope. I'm trying to learn how to use it. Is there something that can be seen with a scope like this on an Ardiuno board? Clock signal maybe? The board I'm ...
0
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2answers
166 views

Does FFT (fast fourier transform) give RMS or peak to peak amplitude vs frequency?

I am using periodic triangular wave (Vp-p=3V, freq= 2kHz), as an input to my oscilloscope to do FFT. My question is that does the magnitude(y axis) of in FFT plot represent the peak to peak ...
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3answers
150 views

Can I visually obtain an equation from this curve?

While I was in the lab I was able to get the correct voltage curves on the oscilloscope, but time was short so I took a picture instead of measuring the voltage incrementally (the ultimate goal being ...
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1answer
90 views

Probe characteristics- what is CAT 1 and CAT 2 means?

What does this mean? Maximum input voltage : 300 VRMS CAT II Maximum input voltage : 300 VRMS CAT I
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1answer
105 views

why does a x100 oscilloscope probe grant a wider bandwidth than a x10 probe

I was asked in an interview the question "why does A x100 oscilloscope probe grant a wider bandwidth than a x10 probe? How much does it widen it?".
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3answers
401 views

How does a passive 1x Scope probe work?

I understand about input impedance and capacitance... My question relates to the cable: What is the characteristic impedance of the cable connecting the probe to the scope? It must be terminated in a ...
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2answers
135 views

Arduino-based oscilloscope: attenuate the input by varying reference voltage?

I don't have a proper oscilloscope. I don't have the budget to buy one, even a used one. I have to roll my own. :( The plan is to use an Arduino Leonardo or Due as a combined A/D and USB interface ...
3
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1answer
77 views

Power supply noise measurements

Im working on a project where I need characterise the noise from a power supply so I can then design some filters. The power supply provides 5V, 12V and -12V to a set of analogue sensors (hence the ...
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2answers
147 views

Oscilloscope measuring of PMT in photon counting mode

I have a setup as drawn below: DC source of 15V connected to high voltage (HV) source of 1500V connected to photomultiplier tube Hamamatsu, R1-R3 are resistors builtin the socket of PMT (there are ...
2
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1answer
154 views

On a Rigol DS1052E oscilloscope, what does the word “Local” mean?

On the front panel of my Rigol DS1052E oscilloscope, on the "TRIGGER" column of controls, the word "Local" is written alongside the bottom button, labelled "FORCE" . What is the significance of this ...
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0answers
72 views

Hitachi V-1050F 2nd Channel Problem

I have a Hitachi V-1050F Analog 100MHz Oscilloscope (operator's manual, service manual (5 part download)). Recently I noticed that the second channel does not display square waves correctly. The ...
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1answer
61 views

measuring load cell output by a oscilloscope

Is it possible to read a load cell output (0~10mV with 10nV steps) by a oscilloscope? or I should buy an extra high precision Multimeter to read the load cell output?
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1answer
48 views

DSO Screen Refresh - Start position

I just picked up my first DSO Oscilloscope, A Siglent SDS1052DL. I have never used an Oscilloscope, so I am trying to learn the basics. I have the following square wave, which drifts during the screen ...
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2answers
133 views

Negative voltages in the real world?

I was given the task to design a circuit that has a 5V input and uses a differential op amp to provide an output that oscillates between 5V and -5V. The design I came up with is the following: ...
3
votes
2answers
230 views

What is the red/orange coating underneath a CRT anode suction cup, and is it important?

This question is regarding a matte red/orange coating around the anode socket on a cathode ray tube which is made to be connected to via a cable with a suction cup, the coating seems to typically be ...
3
votes
1answer
90 views

Oscilloscope probe changes the frequency of the signal

I have a microcontroller that outputs a 50% duty cycle PWM signal at 500kHz. That is then connected to the gate of a MOSFET. Now, I want to measure the PWM signal at the gate of the MOSFET. If I ...
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0answers
151 views

Series diode voltage clipper, on Multisim clipping and shifting on positive and negative voltage

This is my circuit: I’m testing a Series diode clipper circuit, and the end result should be this: (I've used 5V in my circuit, not 10V like in this plot, but this is not the issue) Instead what ...
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1answer
113 views

Setting an oscilloscope to read a noise level

what to set an oscilloscope to when reading a 10 mV noise level on a 12 V power supply output? Frequency is unimportant.
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1answer
70 views

What are appropriate probes for use with a HP 54501A Osciliscope

I'm fairly new to hobby electronics, but when my office remodeled (I work on software in an EE lab) they were throwing out a HP 54501A scope that I was allowed to take. It didn't come with any probes, ...
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0answers
49 views

Trouble looking at Serial data my Scope

I can't seem to get anything looking like a square wave while connected to RS485 or RS 232. I'm not sure what I'm doing wrong. Here is a pic with time base increased.
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2answers
175 views

How to eliminate 50 Hz noise from amplifier's output

My goal is to amplify signals with a frequency from 100Hz above. My circuit is looking as the picture below. With an oscilloscope, I am trying to measure the output of the amplifier. If the input of ...
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2answers
115 views

Using Op-Amp for attenuation to give input to sound card

I know there is lot of question asked about this topic before, I read them but there are some limitation on those circuits which make me ask this one. I want to do analysis of main ...
6
votes
1answer
558 views

How to set the oscilloscope to measure potential between two points that aren't ground?

We have to measure the voltage across a-b in this circuit with an analog oscilloscope, but neither of these points are grounded. How should we put the channels of oscilloscope to perform the ...
2
votes
2answers
126 views

Analog oscilloscope triggers

I have recently received an old 70's era Tektronix 465b dual trace oscilloscope. Unfortunately I have close to no clue how to use it. I understand the concept of triggering but this scope has two ...
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1answer
139 views

Why does the GND of the Arduino oscillating as well?

I have an Arduino Uno and what it does is simply output an oscillating signal of 1 MHz on PIN11. I measured the signal using a oscilloscope and a probe with a ground clip. First, I connected the probe ...
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1answer
197 views

Measuring DC motor voltage with an oscilloscope

My current setup involves an analog controller board that is driving a DC motor and I would like to monitor the voltage being applied to the motor at all times. How do I physically connect the ...
0
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1answer
67 views

Is accelerometer taking as much power (current) as it needs? [closed]

I want to connect accelerometer to an oscilloscope. I have 3x AA rechargable batteries (2550mAh). I was told that e.g. microcontroller knows how much amps should it take and it wont burn if I ...