A piece of measurement equipment which can visualize one or more signals simultaneously on a time scale.
0
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1answer
79 views
What kind of oscilloscope is good? [closed]
I want to buy an oscilloscope as a gift of Father's Day to my Dad. I have no idea what kind of oscilloscope is good? Is there any kind-hearted friend can help me? Thank you in advance!!! :-)
2
votes
3answers
98 views
Oscillocope interleave mode and repetitive mode
Could someone tell me what interleave mode and repetitive mode are in oscilloscope?
References would be good too.
1
vote
1answer
102 views
Oscilloscope ground clips sparks while connecting to power supply
Oscilloscope ground clips sparks while connecting to power supply ground. I do understand The clip is connected to earth ground. But why does it not spark when I am powering a circuit of the supply?
1
vote
0answers
33 views
Why do my outputs look exactly the same for the Allegro 3901?
I am trying to capture results shown in Figure 8 of Allegro 3901 data sheet .
My circuit looks like this:
The channels above coresspond to the oscilloscope screen captures below:
In the image ...
0
votes
4answers
179 views
Design a FPGA based Oscilloscope
I want to design a little oscilloscope that is able to analyze signals up to 1 MHz using a Xilinx FPGA. I want use the VGA interface in order to display the signals. Is it possible obtain a good ...
5
votes
2answers
97 views
Low-sampling rate scope with high-frequency chips? How to bring the frequency down?
Kortuk instructed me with my new handheld scope DSO201:
You can use very high end chips and high working ranges, just at the end you will need a
filter to bring it down to what your o-scope can ...
0
votes
2answers
58 views
Why does my oscilloscope get no pulse wave when connected to my DAQ board?
I have created the following LabVIEW GUI to generate a square pulse train waveform:
As you move the frequency and pulse width knobs the waveform changes accordingly (pulse width is now 2ms).
...
2
votes
0answers
61 views
How can I project an oscilloscope display on to a wall screen [closed]
In the autumn I will be giving a talk to my local amateur radio club and I would like to illustrate it with live displays on my oscilloscope projected on to a large wall screen. I have tried this ...
3
votes
1answer
95 views
What's the use of ground coupling on digital oscilloscopes?
What's the practical use of ground coupling on modern DSOs? I know that it can be useful on analog oscilloscopes to adjust the ground exactly to a graticule line, but from what I've seen, most of the ...
0
votes
1answer
53 views
I2C on explorer 16 board not working
I am using the Explorer 16 Board for building a Accel connected by I2C .
Currently I have only the I2C part done and I am trying to tap scl1 & sda1 using oscilloscope. The accel has to connected ...
9
votes
1answer
166 views
A basic question about oscilloscope probes
I have recently acquired a Tek 460A scope and a mixed bag of oscilloscope probes. I have a very basic question about the probes:
One of the probes is a Tek P2200. This is a 1X/10X switchable probe ...
1
vote
2answers
197 views
Using Audio Input of computer as Oscilloscope for Hobby Electronics
I just discovered an app for mac that uses the Audio Input of the computer and the AD-converter in the sound card as an Oscilloscope.
First, I was thinking this can't work... but theoretically, it's ...
1
vote
1answer
102 views
Logic NOT gate only works with Oscilloscope probe connected
I have a very simple circuit that is misbehaving in a way that I cannot explain with my very limited experience.
The circuit that consists of a motion detector:
...
1
vote
1answer
231 views
Obtaining an op-amp's open loop gain
I'm trying to obtain an op-amp's open loop DC transfer characteristic curve on an oscilloscope, and from the curve, the open loop gain.
Here is an image (from some random website) showing the curve I ...
0
votes
1answer
99 views
attiny85 drops voltage level on an output pin… why?
I am in the process of building a wireless transmitter that is driven by an attiny85. I have programmed the MCU to encode the data using Manchester encoding and I have used an oscilloscope to show me ...
3
votes
2answers
155 views
Are bent oscilloscope probe BNC connecter pins usual feature?
I got a new Testec TT-LF312 probe for my oscilloscope and I noticed that on the probe's BNC connector, the pin in the center is bent sideways a little bit.
The result is that it takes a little bit ...
7
votes
2answers
224 views
Correctly debugging switching (DC-DC) boost converter with Oscilloscope
I have an LED driver (LM3410) that adjusts it's voltage based upon how many LEDs you place in series to it and I'm curious to see what voltage it is actually outputting. To test it I connected my ...
18
votes
4answers
384 views
What to look for in an oscilloscope?
I'm getting back into basic electronics with an Arduino after many years away from the hobby, and I've forgotten a lot of my knowledge.
One thing I'm finding is that I really need to get an ...
6
votes
4answers
427 views
What do I need to know about oscilloscope probes?
I've run across a Hitachi V-355 oscilloscope, and a friend who's willing to give me a deal if I want it. Unfortunately, there are no probes that come with it. I was searching for probes, only to learn ...
2
votes
1answer
268 views
What does “Mean Voltage” stand for in an Oscilloscope?
Most digital oscilloscope have some measurement options besides just displaying the signal. These include "RMS value", "Mean Value" and the like.
Is the "mean voltage" value of a signal shown in an ...
2
votes
2answers
353 views
Can we connect battery negative terminal to oscilloscope ground?
I want to test my setup with 200Ah battery and check the outputs on oscilloscope. While testing can I connect battery ground to the oscilloscope ground?
Is there any safety risk, as oscilloscope ...
2
votes
1answer
103 views
viewing microcontroller's output
I'm trying to sample a(low frequency) signal I'm producing using Microchip's PIC16F1783 (which has an internal DAC).
I connect its output and ground my PC's audio jack (GND+Right Channel).
I then ...
-1
votes
1answer
122 views
Reasonable DSO choice [closed]
i'm looking for relatively cheap, but usable 2/4 channel scope with 100 or even 200 MHz bandwidth and logic analyzer.
It can be standalone device or usb based scope (but in this case linux or osx ...
3
votes
4answers
253 views
Can DAQ devices be used as Oscilloscopes?
Recently, I took computer architecture course, and got interested in analog electronics. At present moment, I can't afford good USB oscilloscope such as Agilent or Cleverscope (though, they are not ...
4
votes
1answer
231 views
When scoping the CLK and DATA lines of a PS/2 keyboard it looks… rather odd
Normally if I look at a digital signal I see a nice, relatively sharp pulse train on the screen, but when scoping the outputs of a PS/2 keyboard things get a little weird and I'm not sure what it ...
7
votes
2answers
214 views
What can be the reason that oscilloscope is showing voltages 10 times more than expected?
I both check via voltmeters and osc. but oscilloscope is showing the values 10 times bigger. For example 5V pulse should be 2.5 mean and voltmeters shows exactly the same but osc. shows 25 V. What can ...
6
votes
3answers
1k views
How to calculate Real Power and Power Factor using an Oscilloscope?
I'm trying to calculate the Real Power consumption of my device in Stand-by mode, but to do that I need to figure out its power factor due to:
Real Power = Vrms x Irms x PF
Now, my device like many ...
5
votes
4answers
290 views
Does “50Mhz Oscilloscope” mean that it can plot up to only 50Mhz frequencies or its bandwith is 50Mhz?
I couldn't find it in the books. I mean the fixed freq. value on the oscilloscope.
4
votes
2answers
567 views
Oscilloscope with FFT or a Spectrum Analyzer?
Could someone explain to me please which aplications demand one and the other and why? As far as I read it's all about the 'db', is it true? And why?
5
votes
3answers
245 views
Help with oscilloscope
I'm little bit confused. Help me please to make everything clear. I want to buy oscilloscope and found two models suitable for me.
Rigol DS1102E
Rigol DS1102CA
But I don't understand the ...
2
votes
2answers
110 views
Triangular waveform shown by DSO for DC output. Is this usual?
Found this, confusing picture on a popular ecommerce site, shows an extremely economical DC-DC (step-down) adjustable voltage converter (based on LM2596S), which apparently works for upto 2Amps of ...
1
vote
1answer
176 views
op-amp + ADC slow reaction
I have the following schematics:
If I have a scope probe on VIN, everything works very well. VIN is an amplification of the input and the ADC reports it very well: good accuracy and no delay. But ...
1
vote
3answers
263 views
Debugging I2C bus using an oscilloscope
Is it possible to debug an I2C bus effectivaly with a two channel (plus an external trigger) oscilloscope?
I've been trying to do it, to catch a single transaction starting from the start until the ...
1
vote
1answer
62 views
How do I troubleshoot a broken SAA3004 Remote control transmitter used in a remote control?
I'd like to troubleshoot and fix a broken remote control for a Guldmann ceiling lift that uses the SAA3004 remote control transmitter (documentation below in link). Can someone explain the tools ...
3
votes
1answer
159 views
input stage (pre opamp) for voltages between 0 and 240V AC
I want to play with a custom DSO design:
sub 1MSPS
Mostly measuring 0-6V signals
Some audio signals
Power line signals
The hardest thing for me is the power line signals. Sometimes I just
want to ...
1
vote
1answer
514 views
using oscilloscope in Proteus AVR Simulator?
I'm generating pulses on ATmega32 and I need to see the pulse wave in the oscilloscope in order to check its frequency. So I connect the pin to the oscilloscope channel and the pin blinks on and off ...
0
votes
2answers
154 views
Oscilloscope reading not what I expect
I had my first very exciting and successful go at an oscilloscope today. The question which arose at the end of my first experience has to do with the accuracy I was expecting. My microcontroller was ...
3
votes
0answers
75 views
Logic Analyzer / Oscilloscope Suggestions [duplicate]
Possible Duplicate:
Beginner's logic analyzer?
I am a beginner in electronics. Been tinkering with micro controllers for about 2-3 months now. At this point I find the need for a logic ...
3
votes
3answers
307 views
home brew isolated oscilloscope lead
The ground clip for an oscilloscope lead is normally connected within the instrument to the power supply earth, and there are surprising circumstances where this could matter. The situation is very ...
0
votes
2answers
113 views
Generic Active Probes
I need an active probe for use with a spectrum analyzer and oscilloscope. My scope has contacts around the BNC connector for powering a compatible probe. The spectrum analyzer is a different story. ...
11
votes
4answers
534 views
Choosing my first oscilloscope
I'd like to repair older computers, such as C64's, Atari's, Apple IIe's etc and their power supplies. I have a multimeter already but I'd like to get an oscilloscope. I've been offered an Owon ...
1
vote
1answer
260 views
8284 Clock Generator Output wave
I am attempting to build my very own 8086 computer. (I know, awesome right?) But not to confuse you, this post focuses only on the 8284A. We have started to cover the Intel 8086 chip in my ...
8
votes
3answers
550 views
What is the name of this springy type oscilloscope probe accessory?
Exactly what it says on the tin.
How is this pictured accessory called? The obvious place to look for a name would be the probe manual, but it looks like they decided to add the accessory to the ...
10
votes
3answers
352 views
Initial experiments with an oscilloscope
So I finally have access to an oscilloscope, after wanting to use one for a very long time.
Now that I am in university, I can use the lab equipment. So my first question is, what should I do with ...
2
votes
1answer
214 views
Why did aliasing occur at a frequency before the Nyquist cutoff?
I sampled frequencies of 400, 500, and 600 Hz at a sampling frequency of 1 kHz. My oscilloscope showed aliasing at 400 Hz, nothing at 500Hz, and then a lot of aliasing at I saw some aliasing
...
2
votes
2answers
312 views
Is there a 10X probe compensator BNC, but with out the probe?
Is there such thing as a compensation BNC like the ones found on 10X probes? I'm basically taking about a BNC coupler with a resistor and a adjustable cap in it. I guess it would be like a standard ...
4
votes
3answers
396 views
RIGOL DS1052E applications
I was planning on getting a RIGOL DS1052E oscilloscope for some radio work. I will be working with the 400Mhz and 900Mhz bands using Amplitude-shift keying (ASK). I know the scope is 100Mhz: 1GS/s. ...
4
votes
2answers
613 views
Isolation transformer and scope when troubleshooting SMPS
I have a simple question, when troubleshooting a SMPS is highly adviced to use an Isolation transformer. But my question is this, if im using a scope to troubleshoot the "hot" side of my SMPS, both ...
5
votes
2answers
377 views
Not able to read SPI signal with digital oscilloscope
I'm trying to connect my beagle board xm rev. C to an external SPI device. Before doing this, I want to study SPI signal coming out from SIMO pin when running the spidev_test program (included in the ...
0
votes
2answers
156 views
oscilloscope dead?
I tried to calibrate the probes before i used the DSO203. I hooked up the function generator to channels a and b (one at a time). I do not get a wave form shown on the screen with the settings ...
