Characteristics of measuring instruments: In electrical and electronic measurements using various instruments both analog (with aguga) and digital (display). All instruments, regardless of the magnitude that can be measured, must meet certain mandatory features to make a measurement .
Accuracy and precision: We must differentiate Although these two terms, since they are high precision diferentes.Una grouping means a securities firm Surroundings of a central value that is treated like the real value of the measurement, the accuracy gives us an idea of the degree of approximately X which a measured value agrees with the true value of measurement.
Sencibilidad: It is a characteristic of the instruments indicates the minimum q value variation medir.Un sencibilidad instrument has a little excitement when one makes the needle can move and display the value of magnitude.
Types of Scales: There are three types of analog scales in the instruments. These are the uniform, the logatmica and expand. Each one has its importance and its characteristics, PJ: The logarithmic at 0 the dryness of this value does not work but for measurements between 5 and 25 is very accurate.
Types of Errors in the measurements: In general, when performing an electrical measurement, never gets the value verdadero.Esto is because mistakes are xq whether the instrument is uncalibrated or defective, or because the that the measurement made mistakes of interpretation of scale, the instrument collected, etc.
Systematic errors: These are errors that originates x various reasons such as poor adjustment of the instrument, application of an inappropriate method, a defect of the observer, and so on.