# What is Distortion Meter?

Check this new article on another measuring instrument from the tutorial series of articles by one of our members.

So here comes another interesting tutorial on measurement devices related to electrical engineering. Distortion meter is another such useful device which is widely use now a days.

With the advancement in technology, development in engineering is leading to more refined results of our everyday problems. Even things of which we could not dream of earlier are being implemented today and problems which were considered negligible and ignorable are being solved.

What is a distortion meter used for? Now distortion meter is such a device which measures detects the frequencies which are responsible for producing harmonic distortion in our signal. So the first question that needs to be answered is that what is harmonic distortion?

### Harmonic distortion

Harmonic distortion is the distortion in our signal that is produced by the additional frequencies generated in the signal. These frequencies are nothing but multiples of the original frequency of our signal. Harmonic distortion occurs not only in sound waves, as that is the most commonly used example.

It also occurs in electrical signals, that is, when a current is passing through a circuit, it can induce vibrations in the circuit and the vibrations produced would obviously be some multiple of the current signal frequency. Hence these vibrations can cause distortion in our original signal. This distortion in current can lead to many problems like voltage fluctuation etc.

The thing that needs to be noted here is that harmonic potential is not always an undesirable phenomenon. Often in techniques of artificial reverberations we utilize it to create useful effects.

### How to use a distortion meter?

Now that we are familiar with the basics of harmonic distortion, and also the fact that a distortion meter is used for the detection and measurement of such frequencies, what lies next?

So once the frequencies are detected, the distortion meter now acts such that it works to eliminate the effect of such frequencies. For this purpose it has the option to set certain predefined parameters, so that any frequencies which lie outside these set of parameters are eliminated and not allowed to pass along with the original signal. The original signal can then be produced at the output in whatever way it is required.

So in short a distortion meter not only detects and measures the distortion in our signal frequencies but also works to overcome or eliminate them.

A typical distortion meter looks something like this:

### Applications of Distortion Meter

1. Distortion meters are being widely used now a days especially in music industry. To make the sound more pleasing and musical, many frequencies are eliminated and some are enhanced as well. For eliminating the unwanted frequencies we use a distortion meter.

2. Distortion meters also find extensive uses in electrical circuits now a days. As mentioned earlier they are used to eliminate the distortions in the currents and voltages which can also prove fatal in some cases.

3. Many advance electrical machines use distortion meters to compensate for the current distortions so that the expensive appliance can be saved from damage due to these distortions.

This was all for now. To know about more such devices do give this blog a visit in upcoming days because I have many other informative articles coming for you my friends.

Nasir.

### 1 Comment

• Dear Sir,

We have a requirement of RF Attenuator & Distortion Meter / Analyzer.
It is requested to please quote on FOB/C&F Karachi basis, including following information.
1. Delivery Period of Quoted Items.
2. Validity Period of Quotation.
3. Harmonized Tariff Code of the Quoted Items.
4. All Necessary Literature.
5. Warranty of Quoted Items.
6. Country of Origin for Quoted Items.

SR. No. DESCRIPTION QTY
01 RF Attenuator
Accuracy: +/- 0.5db
Operational Manual, Service Manual & Calibration Certificate from accredited lab, Imported 01 Nos.
02 Distortion Meter / Analyzer
Range: 0~100% , 5Hz ~100KHz
Accuracy: +/- 1db
Operational Manual, Service Manual & Calibration Certificate from accredited lab, Imported 01 Nos.

Best Regards
M.Faiq Faheem

For Khawaja (CEO)