Questions tagged [function-generator]
A function generator usually refers to a piece of test equipment that generates a variety of waveforms over a range of frequencies. A typical unit may generate sine, square and triangle waves at a frequency up to around 20MHz, they tend to be less often used at higher RF frequencies.
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50 ohm vs HiZ setting on function generator?
I got my first function generator today. The generator is a SDG1032X.
It gives you the option to switch between 50 Ω output and HiZ (high impedance) output by long pressing the output buttons.
It does ...
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Dedicated ground vs power cord ground?
So my Siglent 1104X-E oscilloscope has no dedicated ground- it uses the power cord's ground.
My Siglent function generator has a dedicated ground (screw terminal with banana plug option). Obviously I ...
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Can I connect two function generators in parallel?
I wish to connect the output of two functions generators together - Agilent 33220A and HP 33120A. When measuring with an oscilloscope, I see that even when idle, the outputs of those generators differ ...
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Adding programmable amplitude control to an AD9833-based function generator
I'm working on making a function generator using the AD9833 DDS chip, but it doesn't have programmable amplitude control.
I want to use external hardware to achieve this. My amplitude has to be 1 V to ...
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Using a function generator as a clock source to drive several ICs (CD4000 CMOS series & 74 TTL)
I am building a circuit that uses a 4 MHz reference carrier. The used ICs are basically XOR 7486 and NOT 7404, CD4013 flip-flop, etc.
I have a function generator which is capable of providing up to 5 ...
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What is a simple circuit to generate TTL signal with fixed frequencies?
What is the simplest circuit that can be used to generate a 5V TTL signal with fixed frequencies such as 0.5Hz, 1Hz, 50Hz, 100Hz, 500Hz, 1kHz, 5kHz, 10kHz..?
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How can I send the output of a function generator to the STM board's ADC and check the digital values at the output?
I have an STM32F series board and I'm using the ADC. How can I send the output from a function generator to the board and get the digital output values on the STM32Cube IDE?
I'm using STM32cube IDE 1....
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Square wave only has a positive side, how do we move it to the middle so it has a positive and negative cycle?
We have a project to make a function generator that outputs a square, triangle, and sine wave. We have already made one, but there are several problem with it.
The square output only has the positive ...
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Device to vary the AC voltage output and frequency
Can a function generator be used to generate signals from 120 V to 220 V with a frequency of 50 Hz or 60 Hz?
The issue is that I require these signals to test an application for a microcontroller that ...
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Signal Generator Output Impedance Matching and Floating Ground
I am attempting to recreate a signal generator circuit based on the XR2206, as seen in this video. The schematic uses op-amps for offset cancellation and output amplitude matching. To avoid the need ...
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Why does voltage spike when resonance frequency is matched with crystal oscillator?
I am learning to test the accuracy of specific frequencies of crystal oscillators using a function generator and oscilloscope. When you get closer the the actual frequency of the crystal the voltage ...
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How can I generate square pulses of the format shown in picture? The positive part should have smaller time scale
How can I generate pulses of this format? I need to generate a single pulse of 20V as a trigger pulse for performing a microscopy experiment( I couldn't manage to get a programmable function generator ...
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Amplification needed to power Helmholtz coils
I'm having trouble generating magnetic flux between these coils that are hooked up to a function generator. An oscilloscope is also used to monitor the waveform.
The issue that I'm having is that I ...
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Understanding voltage terms
i am using a voltage divider circuit and i provide input using a function generator. For example I give a 1 Vpp square wave. Now, I measure the voltage across the resistors using multimeter and ...
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Match function generator output phase to line phase
I am new here so my apologies if I am missing pertinent details. I am trying to cancel a 60Hz EM field by sending a small 60Hz AC current through a loop of wire that I am generating with a function ...
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Understanding connection of floating function generator to oscilloscope
I'm working with a function generator that has a floating output. At one point, I looked at the signal on both the center conductor of the BNC connector and on the shield of the BNC connector relative ...
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Calibrating the R&S FPL 1003 Spectrum Analyzer
I am setting up an EMC test bench and I have a spectrum analyzer(SA): The Rohde and Schwarz FPL 1003 Spectrum Analyzer. I am trying to conduct some preliminary tests to ensure that the results seen on ...
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What is the simplest way to boost the output of a waveform generator to drive a piezo mesh?
I am trying to generate a ~40vpp sine waveform with a Rigol DG1022Z. Its maximum is 20Vpp.
I want to test the device at frequency ranges of a piezo device from 40kHz to up to 200kHz. This is to drive ...
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Impedance matching a function generator and a laser source
I am using a function generator to generate a sine input to a modulated laser. The function generator has output settings of 50 Ω and High-Z, while the laser for some reason has a 1 kΩ input impedance....
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Basic capacitor in circuit
I’m new with electronics. I really don’t know how to search up this circuit. This circuit will make the LED turn on when it has microphone input. Could someone explain or suggest what should I search ...
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Function generator cannot generate differential voltage?
I am using the AD620 as instrumentation amplifier to amplify the body's ECG signal. An ECG is a differential signal (measured with two electrodes) and I want a differential gain of \$G_d = 1000\$.
The ...
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UTG900E output specification
The datasheet of UTG900E Waveform generator says it can output up to 10 Vpp on a 50 ohm load, but in chapter 3.3.1 is stated the load can be set between 1 and 999 ohm.
Nowhere in the datasheet I see ...
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Adapter for a function generator output
I want to order this adapter, but I can't find it on the web. Can anyone please confirm the exact name of this adapter for a function generator having a channel output and terminals for a DC power ...
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Do 50 Ω signal generators have a series resistor or not?
I am wondering about something really simple and silly.
If functions generators have an internal series 50 Ω termination, then they would produce only half the set amplitude over a matched load.
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What is wrong with this function generator simulation?
I was trying to make a function generator using op amps, and I am supposed to get square waveform as output of the second stage and a triangular waveform as the output of the first waveform. But when ...
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Using RC lowpass filter at the MCP4802 DAC output (Arduino Nano waveform generator) [duplicate]
I have code on Arduino Nano that has predefined array of 4 waveforms (square, sawtooth, triangle, sine).
The array has, for each of the waveforms, 256 values where each value is 8 bit.
The speed, at ...
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Reducing the peak to peak voltage of a sine wave
I have a function generator, and I am outputting 100 mV peak to peak sine wave.
By making a circuit of resistances, I am trying to reduce the peak to peak voltage to 2 mV.
But I am getting noise in ...
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Attaching Lower Impedance Part to a Function Generator
If a speaker with a hypothetical 3 ohm impedance is attached a signal generator with an output impedance of 50 ohms, will the speaker draw too much current, and overload the signal generator?
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Generate an arbitrary wave (cos60t + cos1000t) with an arbitrary wave generator
I want to generate a wave with the help of an arbitrary generator.
$$v(t) = \cos 60t + \cos 1000t$$
My school lab has an AFG-2125-E4 arbitrary generator.
I have tried to use arbitrary wave to generate ...
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Mux 2:1 with NAND gate and function generator
I want to simulate the operation of a 2:1 mux using only NAND gates. I want to insert two square wave signals and obtain the corresponding result depending on whether the selection is 0 or 1.
With the ...
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What cable is this, and what is attached to the end? [closed]
I have a question regarding the cable in a red square, namely that green thing.
This is a video from YouTube and I am trying to recreate the same. I want to connect the same type of transducer to the ...
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Why is the scope showing half the value of the function generator?
This is a follow up on this question: Oscilloscope voltage not matching function generator
When the function generator is set to 50 Ω (Rint), it automatically assumes that the external load Rout (...
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Modulating a high-frequency signal to get rid of an undesired low-frequency component
So when I ask my function generator for 2 MHz, it gives me that with a 19 Hz oscillation. For my application this low-frequency signal is very problematic. I've tried high passing it which does close ...
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Change the duty cycle of pulses
I'm trying to raise the duty cycle of short pulses (about 10%) through the range up to ideally 80% using a potentiometer. I've seen variable pulse generator designs using 555s, but my trigger is ...
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Signal generator, DC offset, impedance into an open load - workarounds?
Video: MHS5200A Function Generator Review and Teardown
I have the signal generator referenced in this video. As the video says, its output impedance is specified into an open load.
It has a floating ...
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Electrolytic capacitor and AC
I'm doing an experiment to investigate the relationship between frequency and capacitance. The experimental setup is to connect an aluminum electrolytic capacitor to a function generator and use an ...
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Function generator with an operational amplifier
I am solving a function generator whose frequency of each output is 5kHz. My question is, how can I find the parameters of C3, R5 and R6 to get an output of the same frequency?
In addition to the ...
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How can I generate this waveform?
I am trying to generate this waveform:
basically a ramped square wave with a maximum frequency of 1KHz.
My first thought was to use the DAC pin of a microcontroller, but are there any ICs that can do ...
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What kind of latch would be best to continuously store and feed in a series of inputs?
So I've got an assignment where I've two buttons and LED screen. One button inputs a '1' and the other a '0', and when four inputs are detected the screen displays the number eg. If I typed 0011 it ...
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What is the best video/textual source for learning circuit designing? I want to create a high amplitude, function generator? [closed]
I am a self taught software programmer, I have an electrical engineering project where I have to design a function generator of high voltage/amplitude using 555 timer. The function generator that I ...
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Half-wave rectifier with filter and clipped input signal in oscilloscope
When building a half-wave rectifier with a capacitor filter for my electronics lab, there was significant clipping at the peaks of the input signal. When looking at the .csv file pulled from the ...
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LHT00SU1 logic analyzer clock generator
I was using a LHT00SU1 logic analyzer and according to this it should have the capability to produce a variable frequency signal (i assume through the CLK pin).
Using pulseview with fx2lafw firmware I ...
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AD9833 Function Generator - Poor square waveform
I have built a function generator using an AD9833 board, using the schematics found here. The circuit seems to work well, but the square waveform that it outputs isn't great and there is some ...
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Is lead color a safety issue?
BNC to alligator clip connectors were made for a function generator in our lab. Whoever made them decided that the ground connector wire should be red and the signal connector wire should be white.
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Higher voltages between protective earth ground (mains) and function generator than expected
I uploaded a video to YouTube specifically to help me explain my question. Please watch it if you can.
Otherwise, here is my text-based description:
I have an oscilloscope, function generator and ...
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Inject tone into computer
I'm using the circuit at the bottom of this post to generate a triangular wave, which I'd like to inject into a computer's microphone jack.
My computer has a single audio jack. When I plug a TRRS ...
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Inductor voltage not decaying to 0V by t=5 TC
In a new lab I have the following circuit:
The inductor will change from 200 mH -> 400/600/800 mH. I am starting with 800 mH.
The function generator is a square wave at:
50 Hz, 20 ms period, and ...
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Why do I get 0 volt output when I have a voltage divider with a square wave input?
I would like to state the problem I am dealing with which I cannot explain.
The set up I have is as follows:
2 x resistors 1 kΩ,
1 x breadboard,
Wires,
1 x Voltcraft DSO-6202FM oscilloscope which has ...
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RC circuit waveforms not lining up on oscilloscope (capacitor starting negative)
I have a lab for a circuits class and in it we are building an RC series circuit with a square wave input. I am using a function generator to produce a square wave at 50Hz, period = 20ms, Amp = 500mV,...
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How to measure the frequency response of a waveform generator?
I was looking at the data sheet of an arbitrary waveform generator and found a plot of the frequency response of the instrument, then wondered how it was measured. I know how to measure the frequency ...
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