what are the advantages of digital multitester over analog multitester?

Answer 1

Advantage of digital multitester over an analog multitester:

1)Older analog meters might have basic accuracies of five to ten percent. Modern portable digital multitesterss may have accuracies as good as ±0.025%, and high-end bench-top instruments can have accuracies in the hundredths of parts per million figures.

2)The inclusion of solid state electronics, from a control circuit to small embedded computers, has provided a wealth of convenience features in modern digital meters.

3)Digital meters often feature circuitry or software to accurately measure the AC voltage at any frequency within a specified range. These meters integrate the input signal using the root mean square method, and will correctly read the true voltage of an input signal even if it is not a perfect sine wave.

Answer 2

Analog Multitester

Answer 3

On the other hand, often the digital meter shows more digits than its accuracy justifies and we poor dumb humans write them down as truth. My cheap hand-held shows three digits, implying an accuracy on the order of one part in 200 (1.99 would be one part in 200) but it is only accurate to +/-2%, so the last digit is "just there". And an analog meter will show you "twitches", when the voltage you are measuring has some transients on it. The digital usually won't respond, but the analog will "twitch" and leave you wondering "what was that". I use both, usually interchangeably, but often one in preference to the other because I want to use its advantages.

Answer 4

Another disadvantage of the digital meter is that it requires a finite time for sampling the signal. Analog meters are still prefered for measuring the trends in a rapidly changing signal such as when turning a circuit for maximum power. A digital meter has to catch up with each change in tuning before you make another adjustment, a fairly tedious way to do things.

Answer 5

On digital you can read an exact number. Better digital ones have a serial output so you can send the reading value to a computer and put it on a chart. Digital usually has autoranging so you can never burn out meter by being on a low scale with a high voltage.

Answer 6

but taking a signal from an power amp to speakers and measuring voltage with a digital meter has an disadvantage from the slow read out

Answer 7

in digital meter we can accurately measure in single met re we can measure voltage current etc.error in digital met re is less. power consumption is more.there is no error because it has no mechanical parts.but only disadvantage is we need external power