Analysis of the use and instructions of the function signal generator

Today, I will sort out some information about how to use the function signal generator. I hope that netizens can better understand it by learning how to use the function signal generator. Although it is a bit repetitive, I will first talk about what a function signal generator is and then analyze the use of the function signal generator in depth.

A function signal generator is an instrument that can provide a precise signal source, also known as a waveform generator. Its most basic application is to generate sine waves/square waves/sawtooth waves/pulse waves/triangle waves and other time function waveforms with some specific periodicity (or frequency) for use as voltage output or power output, etc. Its frequency range is related to its own performance. Generally, it can range from a few millihertz or even microhertz, and can even display and output waveform signal sources with ultra-low frequencies up to tens of megahertz.

The following figure is one of our applications (simplified block diagram):

Function signal generator with sweep capability

We have talked about the basics and application examples of function signal generators here. Now let's learn in depth how to use function signal generators. We will explain it from the following aspects.

(1) Panel and operating instructions

This part is to explain the appearance of the function signal generator and some buttons on the panel. We must clearly know the function and role of each button/key on the panel, so that we can use it better. The buttons we often use include the power switch POWER, frequency display, frequency multiplication potentiometer, frequency meter input attenuation selection switch, frequency meter input selection EXT/INT, frequency meter input terminal, TTL/CMOS output terminal, analog signal output terminal, duty cycle adjustment/inverted output selection DUTY/INVERT, output signal bias adjustment, TTL/CMOS selection and CMOS level adjustment, analog output signal amplitude adjustment AMPLITUDE/output attenuation ATTENUAT10N, analog output waveform selection switch FUNT10N, frequency band selection switch, etc.

(2) Performance parameters

Regarding the performance parameters, although each function model generator is different, we generally need to understand the output frequency, output impedance, output signal waveform, signal amplitude and type, scanning method, modulation method, output signal method, stability, signal range, display method, etc.

Function signal generator

(3) Usage

A. Connect the function signal generator to an AC 220V, 50Hz power supply, press the power switch, and the indicator light will turn on.

B. Press the selection function switch of the desired waveform.

C. When you need to output a pulse wave, pull out the duty cycle adjustment switch, and adjust the duty cycle to obtain a stable and clear waveform. At this time, the frequency is 1/10 of the original. In the sine and triangle wave states, press the duty cycle switch knob.

D. When a small signal output is required, press the attenuator.

E. Adjust the amplitude knob to the required output amplitude.

F. When the DC level is required, pull out the DC offset adjustment knob and adjust the DC level offset to the level value that needs to be set. In other states, press the DC offset adjustment knob and the DC level will be zero.

(4) Notes

A. The instrument needs to be preheated for 10 minutes before use.

B. Before connecting the instrument to the power supply, check whether the power supply voltage and frequency meet the instrument requirements.

C. Do not apply voltage > 10V (DC or AC) to the output terminal.

The above is the editor's summary of the use of the function signal generator and instructions, I hope it can help friends who use the function signal generator. If we need to use the function signal generator better, we need to know the performance parameters we need to know when using it, as well as the distribution and function of each button on the function signal generator's user panel, as well as the use of the function signal generator operation steps and precautions. Once we master these aspects, we can use it like a duck in water and with ease.

In fact, no matter what electronic equipment we use, we need to understand the basic directions I mentioned above. Not only signal generators, but also many instruments need to be familiar with them to be used flexibly. It is not enough to just use it. We should analyze the schematic diagram of the function signal generator, the design diagram of the signal generator, etc. in more depth. Please continue to pay attention to the test and measurement channel of Saiwei Electronics Network for more relevant information.