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  2. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    An autoranging digital multimeter can automatically adjust the scaling network so the measurement circuits use the full precision of the A/D converter. In a digital multimeter the signal under test is converted to a voltage and an amplifier with electronically controlled gain preconditions the signal.

  3. True RMS converter - Wikipedia

    en.wikipedia.org/wiki/True_RMS_converter

    Distortion of a waveform True RMS Multimeter. For the measurement of an alternating current the signal is often converted into a direct current of equivalent value, the root mean square (RMS). Simple instrumentation and signal converters carry out this conversion by filtering the signal into an average rectified value and applying a correction ...

  4. Avometer - Wikipedia

    en.wikipedia.org/wiki/Avometer

    The multimeter is often called simply an AVO, because the company logo carries the first letters of 'amps', 'volts' and 'ohms'. The design concept is due to the Post Office engineer Donald Macadie, who at the time of the introduction of the original AVOmeter in 1923 was a senior officer in the Post Office Factories Department in London.

  5. Dummy load - Wikipedia

    en.wikipedia.org/wiki/Dummy_load

    A dummy load is a device used to simulate an electrical load, usually for testing purposes.In radio a dummy antenna is connected to the output of a radio transmitter and electrically simulates an antenna, to allow the transmitter to be adjusted and tested without radiating radio waves.

  6. Auto polarity (digital multimeter) - Wikipedia

    en.wikipedia.org/?title=Auto_polarity_(digital...

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  7. Utility submeter - Wikipedia

    en.wikipedia.org/wiki/Utility_submeter

    Submeters can measure use of a single panel, or multiple points within a panel system using single-point, multi-point, and branch circuit submeters. [9] The latest [clarification needed] trend in submetering is Automatic Meter Reading, or AMR. This technology is used to get from meter reading to billing by an automated electronic means.

  8. Laser rangefinder - Wikipedia

    en.wikipedia.org/wiki/Laser_rangefinder

    Usually tanks use LRF to correct the direct shoot solution. Handheld military rangefinders operate at ranges of 2 km up to 25 km and are combined with binoculars or monoculars . When the rangefinder is equipped with a digital magnetic compass (DMC) and inclinometer it is capable of providing magnetic azimuth, inclination, and height (length) of ...

  9. Mathematical discussion of rangekeeping - Wikipedia

    en.wikipedia.org/wiki/Mathematical_discussion_of...

    The observer would first use this device to measure the angular width of the target. Knowing the angular width of the target, the range to the target, and the known length of that ship class, the angle on the bow of the target can be computed using equations shown in Figure 2. Human observers were required to determine the angle on the bow.