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265 Threads found on edaboard.com: What Oscilloscope
I am actually supposed to simulate the design attached below and observe the output characteristic on the oscilloscope for different values of base current on proteus. Anyway, what exactly I m looking for is this: . But I couldn't do it because there is no display mode or such on proteus' oscilloscope. I m not familiar w
Hi, Have a re-read of the datasheet specs, page 4: "Zero Current Output Voltage" This is the Allegro Micro datasheet. Without any further information I would guess your supply voltage is 5V? Or with the motor on do you get a constant 2.5V at the sensor output pin? "The value nev
I produce a rectified sine wave 1Vpp 100Hz using a PIC + DAC 12bits. I would like to smooth the line by applying a filter. what filter do you suggest? 135668
Hello everyone. I'm trying to make a 8051 (AT89C51) to read temperature from DS18B20 and send it to a PC through the serial port (FT232). I'm almost done, have the code alraedy, and it actually works in Proteus simulation. 134562 this is my code: # include sbit dq = P3^5; // connect with DS1820 Dat
Hello, Working on a project of mine, I have recently bought a USB oscilloscope. It took me only 30 minutes to damage my project using the oscilloscope. I'd like to understand why it happened please . Setup: Arduino Mega fitted with a 4xLED driver shield ( )
The waveform is what you can expect when measuring the oscillator output with a regular oscilloscope probe, most likely using a long ground clip cable. It mainly shows the limitations of your measurement equipment, respectively your way to use it. Simply impossible to get trustworthy rise and fall time measurement this way. To suggest better
hello all I want to create a complicated signal (near guassian) as input in proteus. I know that i should use FILE type of generator mode in proteus. but when i give a file with 2 columns as volt vs. time and connect it to an oscilloscope it shows nothing. i put here my input file. 131374 what's wrong? any help is appreciated
Hi, what are the things that can't be done on a spectrum analyzer and can be done with the scope? I am talking only for RF work, I do not care about inspecting the edges of a square wave for example.
Hello, I have found this little oscilloscope project (URL) that uses a single A/D converter connected directly to the LPT port. It uses one pin of the port as an EXT trigger, which is desirable in my application. The author notified me that it can display signals up to 30-40KHz or so. 1. I wonder, what is the thing that limits the display of signa
How simple can it be designed/done ? what would it take ? A single channel, 100KHz bandwidth, no storage, VGA output for that spare old monitor sitting behind the spider webs... Or has it been done and there is instructions on the net ? Or such does exist in kit form ? There is many cheap oscilloscope kits but for smaller LCD displays.
I tried to verify the values manually (by using oscilloscope and testing several address lines) what exactly do you mean by manually ? How did you make the manipulation of logic levels on pins ?
Can anyone catch what I'm missing? Open the inductor parameters and look at the bottom line... 128062
If you want to trigger the trace to capture a spike you ideally need a storage oscilloscope so it can show the spike itself and not just what happens afterwards. The best you can do without storage is to set the trigger level to a point just higher than the highest normal voltage in the signal, this will unlock the trace so it free-runs and probab
If you ask me what piqued my interest in electronics, it was the Tek 545 scope. A short story: My father, an architect and avid stereophile, built a home for the owner of a local broadcast station. That person brought home one day the station's scope, hooked it up to the stereo amplifier, and played some music. To me, seeing the wavy line
Please describe what traces 1 and 2 are on your oscilloscope picture. The waveforms look completely wrong but without knowing which signals they are, what data is being shown and the time scale it isn't possible to make a good diagnosis. Brian.
Are you taking into account the current flowing in to the volt meter itself? It is unusual to configure a MOSFET circuit like that, the resistor is a 'pull down' and the switch connects the gate to ground to turn the MOSFET on. Is that what you intended? There will be some leakage into the gate as well, it will be very small but 4M limits the po
With just a brief glance at your two links, it seems to be a hardware kit that you can re-configure via software and view the results on the computer acting as a oscilloscope (CRO). There is no indication of what signal sources(real or virtual). Or even whether the simulated circuits and related to the plug in board, I.E. if you put a DVM across
Hi! I have problems with MOSFET overheating, while switching resistive load (resistor and LEDs). For driving a MOSFET (I'd tried with two different ones - FDD8444 and NTD3055L104) I'm also using a driver MCP1416. I've made some images with oscilloscope. Can someone explain me what is going one? Why is there a curve on the top of the square signa
In addition to what's said by Warpspeed about noise problems, I must confess that I'm unable to recognize from your oscilloscope wavefroms why you don't achieve 100 kHz. The 3842 oscillator is free running, so you should primarly see 100 kHz ocillator frequency at the RtCt pin, isn't it? But it's impossible to see if the oscillator is actually
what do you mean "the jitter needs to be lesser than the reference value." what's the reference value? Do you mean the 25MHz clock? There are devices called "jitter cleaners" that might be what you want-they are basically PLLs with very narrow filters. Look at TI, IDT, etc. Is your proposal to use two synchronous clocks? If they're not (...)
what do you mean "output is not reaching 0V"? what IS it reaching? Maybe 2V (like you'd expect)?
what is a problem to provide more information? Wich ARM do you using? Where is the code? We are not a magichans, we know nothing about black magic, fortuna cards and e.t.c.
what are you using it for. If just basic scoping low frequency signals then almost anything will do. If you want to depict ringing and peak drain voltage spikes in smps's then you will need high bandwidth. Beware some of the Far eastern ones where the save_waveform feature doesn't work on windows 8. Do you need sample and hold....if so, don't buy a
Before going into PLL configuration details, I would check with an oscilloscope 1. if the UART is running at all 2. what's the actual TX baud rate
I wonder what a "DC frequency" is meaned to be? The audio input can be expected to use AC coupling with e.g. 20 Hz cut-off frequency. So you'll see 0 signal when applying DC voltage to it. Take care that you restrict the input signal to usual audio levels if not otherwise specified.
First try to define what the "ripple" is. Ripple usually is defined for pulsed signals as deviation from the "straight" pulse top or bottom. For non-periodic signals, what is their form? what the "ripple" should be?
That looks like a fault in the X deflection amplifier. Do you have a service manual? what happens when you turn the X position control or select different timebase speeds? Brian.
The Trigger signal in the oscilloscope is responsible for what part of input signal has to be displayed on the screen. Which is generated with time scale setting and input signal edges, If the distance between edges in the input signals keep changing it cant be stable.
what exactly are you measuring? A sine wave, or some broadband modulation or digital signal? You would want to measure a stepped sine wave...i.e. CW tone, make the measurement at 60 MHz, step freq to 61 MHz, remeasure, and so on. Also, is there some isolation between the splitter and the DUT? like an amplifier with low S12? The reflected group
Sounds curious. Normally we should assume that the amplifier is either defective, overloaded or otherwise operated incorrectly. what's the coil impedance and signal level? Did you check the input and output waveform with an oscilloscope? I presume the DC offset option is disabled.
18bit is an extremely high precision, even a 75,000$ oscilloscope from Agilent does not support an 18 bit vertical resolution! The resistors and other components in the circuit will limit precision much before the ADC's limit. what is the maximum error percentage that you desire?
Pin 14 of U1 and U2 should go to Vdd (+5V) and both pin 7 should go to GND.(0V). Your clock pulse should go to pin 13 of both U1 and U2 as they are identical. Connect a oscilloscope to the 3 points as in my schematic and you can get more info on what your circuit is doing. See my attachment in proteus. Allen
I had small circuit from SMPS power supply. It's KORG KA-310 power supply for musical instrument. There was broken switching transistor and I suspect driver doesn't work (no pulses on my oscilloscope review), marked "62834". I can't find datasheet of it. Photo here: 106571 SOT-23 6-lead package. Anybody knows what can
what are the crystal frequencies? do you receive anything? have you tried connected the explorer to a PC to see if anything works have you an oscilloscope to look at the TX and Rx lines to see if any data is present?
BLDC motors contain all sorts of stuff, oscillators, power stages flux detectors. . . Just because there is an externally available pot to control the speed does not mean a great deal. Have you checked with a CRO, exactly what is on the pot? Frank
hi I want to calculate the duration of a disturbance signal,what i have done so far,i coded the program for adc interfacing with pic16f877a,capture all the samples and stored it in a text file. for disturbance detection,i used wavelet decomposition in matlab,simulated the disturbance and reference signal there and from there i calculated the
it samples the signal over and over, and eventually builds up a good idea of what the signal looks like.
Hi guys, I'm close, but am having trouble sending 6-bits to an IC that expects only 6 bits from my PIC18F2550. DATASHEETS: PIC: Hittite IC: This is what the oscilloscope shows: 103690[/ATTAC
How much voltage drop can you accept across your current meter? galvanic isolation required? sinusoidal or square wave? what will be the readout device (ADC, just volt or current meter, etc)? accuracy?
It sounds like the FPGA issues the reset to the microprocessor before it's ready, although that doesn't REALLY sound right. I would think the processor would start up before the uP. Have you looked at signals with an oscilloscope? I don't know what you mean by "hand" and "shake"-does this have anything to do with reset? Regardless, why don't yo
Buy what you need. Do you need a logic analyzer? Do you need a function generator? Can you find those functions cheaper (and at a later date) in stand alone products? Do you need 4 channels? 2 channel scopes are generally cheaper. It's up to you to decide the cost vs. functionality you need for your budget.
You forgot to post an image or sketch of what you see on your 'scope so we do not know what you are talking about. It should look like this: EDIT: The inputs must not be connected to the output 0V.
There are lots of good scopes out there. I really like the Agilent DSO6000 series, but they're a LOT more than $900. First you say your budget is $900, then you say you'd pay more. Which is it? Decide what you really need (and what you might need in the future). Those cheap Chinese scopes might look like they have similar specs compared to the
can you explain your requirement? what kind of hardware you are going to use for oscilloscope, impedance analyzer and spectrum analyzer. what do u mean by "I wished these three instruments could be used in a single device and make it computer-based. I also want to explore it using myDAQ and LabVIEW and a PIC microcontroller."
what about this:
Why do you have to use DC coupling on the oscilloscope Triggering when measuring Low frequency's? what does DC coupling do for the triggering? for low frequency's? Why does AC coupling Distorts waveform's? I know the AC coupling RC network causes the waveform distortion When measuring Low frequency squarewavefor
what you saw is absolutely normal, the 'line' drawn on a CRT oscilloscope is actually a single dot, it is the afterglow of the phosphor and persistence of vision that make it look continuous. At slow sweep speeds, both these effects are insufficient and you see the travelling dot instead. An analog storage scope and all digital scopes work by digi
what is the purpose of C42 to ground on the clock line?
If CRO is the Cathode-Ray oscilloscope, then today.s oscilloscopes use a different display. You can use any good oscilloscope to observe voltage waveforms. what exactly you need? Do you have some schematics and specifications?
how we can check the input and output of tranformers and what is the value of voltages at different transformers You can use voltmeter to measure transformer input and output voltages, also voltmeter should support that voltage range and voltage frequency for measuring. Probably value will be different for


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