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  2. Personal RF safety monitor - Wikipedia

    en.wikipedia.org/wiki/Personal_RF_safety_monitor

    Other monitors, like extremely low frequency monitors which measure exposure to radiation from electric power lines, also exist. The major difference between a "Monitor" and a "Dosimeter" is that a Dosimeter can measure the absorbed dose of ionizing radiation, which does not exist for RF Monitors. Monitors are also separated by "RF Monitors ...

  3. Refresh rate - Wikipedia

    en.wikipedia.org/wiki/Refresh_rate

    For instance, a monitor with a horizontal scanning frequency of 96 kHz at a resolution of 1280 × 1024 results in a refresh rate of 96,000 ÷ (1024 × 1.05) ≈ 89 Hz (rounded down). CRT refresh rates have historically been an important factor in video game programming.

  4. Multisync monitor - Wikipedia

    en.wikipedia.org/wiki/Multisync_monitor

    A multiple-sync (multisync) monitor, also known as a multiscan or multimode monitor, is a raster-scan analog video monitor that can properly synchronise with multiple horizontal and vertical scan rates. [1] [2] In contrast, fixed frequency monitors can only synchronise

  5. Electronic monitoring in the United States - Wikipedia

    en.wikipedia.org/wiki/Electronic_monitoring_in...

    GPS-based tracking system used for some individuals released from prison, jail or immigrant detention. According to a survey distributed by The Pew Charitable Trusts in December 2015, "the number of accused and convicted criminal offenders in the United States who are supervised with ankle monitors and other GPS-system electronic tracking devices rose nearly 140 percent over 10 years ...

  6. Spectrum analyzer - Wikipedia

    en.wikipedia.org/wiki/Spectrum_analyzer

    The frequency halfway between the stop and start frequencies on a spectrum analyzer display is known as the center frequency. This is the frequency that is in the middle of the display's frequency axis.

  7. Computer monitor - Wikipedia

    en.wikipedia.org/wiki/Computer_monitor

    A flat-panel display (FPD) computer monitor A cathode-ray tube (CRT) computer monitor A computer monitor is an output device that displays information in pictorial or textual form. A discrete monitor comprises a visual display , support electronics, power supply, housing , electrical connectors , and external user controls.

  8. EMF measurement - Wikipedia

    en.wikipedia.org/wiki/EMF_measurement

    frequency selective measurements: in which the measurement system consists of a field antenna and a frequency selective receiver or spectrum analyzer allowing to monitor the frequency range of interest. EMF probes may respond to fields only on one axis, or may be tri-axial, showing components of the field in three directions at once.

  9. Van Eck phreaking - Wikipedia

    en.wikipedia.org/wiki/Van_Eck_phreaking

    Tempest for Eliza is a program that uses a computer monitor to send out AM radio signals, making it possible to hear computer-generated music in a radio. Video eavesdropping demo at CeBIT 2006 by a Cambridge University security researcher; eckbox – unsuccessful or abandoned attempt in spring 2004 to build an open-source Van Eck phreaking ...