Products/Services for Decibel Meter Schematic

  • Analog dBm Meters-Image
    Analog dBm Meters - (23 companies)
    Analog dBm Meters Information. Analog dBm meters are instruments that measure signal power. They display values on a dial, usually with a needle or moving pointer. Signal power, which can be expressed in decibels (dB) when the unit of reference...
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  • Noise Meters-Image
    Noise Meters - (20 companies)
    RF noise meters are used to measure and/or monitor noise produced by RF equipment. Noise Meters Information. RF noise meters are used to measure and monitor unwanted radio frequency (RF) noise across portions of the electromagnetic spectrum. RF...
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  • Measurement Microphones-Image
    Measurement Microphones - (60 companies)
    ...level is the deciBel (dB) with a reference pressure of 20 micro Pascals, which is the human hearing threshold. Microphone diameter has an effect on the dynamic characteristics. In general, larger diaphragms are more sensitive and have narrower...
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  • Sound Level Meters and Noise Dosimeters-Image
    Sound Level Meters and Noise Dosimeters - (232 companies)
    Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement. Sound Level Meters and Noise Dosimeters Information. Sound level meters...
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  • Acoustic and Vibration Test Equipment Repair Services-Image
    Acoustic and Vibration Test Equipment Repair Services - (58 companies)
    ...transducers, sound level meters and other specialty instruments. Sectors. Areas of expertise covered by providers of acoustic and vibration test equipment repair services include accelerometer or vibration sensors, acoustic sensors or microphones...
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    Liquid Level Sensors - (713 companies)
    Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids.
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    S Meters - (13 companies) a mid-scale reading of S 9. The upper half of the S meter scale is calibrated in decibels (dB) above S 9 up to 60 db. One S unit represents a 6-decibel (dB) change in received signal strength, and a reading of 60-dB indicates that the strength...
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    Analog Multimeters - (206 companies) analog multimeters include DC voltage, AC voltage, DC current, AC current, frequency range for AC currents, and decibel measurement. Analog multimeters that measure current may have a current clamp built-in or configured as a probe. A current clamp...
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    RF Power Meters - (27 companies)
    RF power meters measure the strength of an RF signal in dBm or watts and may also be called an RF wattmeter. Typically RF power meters are used to measure the output of a transmitter. RF power meters measure the strength of radio frequency signals...
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    Scales and Balances - (990 companies)
    ...currents, but if the exact temperature of the item is known than a misreading can be mathematically adjusted. Air pressure/altitude -- For every meter in altitude the item is raised, the change in air pressure will result in approximately -.065 mg...
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  • The Droitwich broadcasting station
    A schematic diagram, of the speech-input system is given in Fig. 32. The volume of the incoming pro- gramme, after equalization, is 16 decibels below " zero volume " (Zero volume is denned as that volume of programme which will give a maximum deflection during loud passages on a meter calibrated to read maximum …
  • A simplified auditory test for infants and young children
    Sound field and control room with schematic and instrumenta- tion used for Speech Reception Thresholds and Discrimination … room is less than 24 decibels , as measured by the General Radio Sound Level Meter set at position A.
    Figure 51: Schematic diagram illustrating the experimental set up of the control when comparing the materials used … The sound pressure level, in decibels [dB], was measured using a decibel meter made by EXTECH Instruments, model #407730.
  • Recent developments in radio-frequency cables
    Fig. 6.— Schematic of measurement equipment. block diagram of the apparatus. The signal is fed to the slotted line, and the voltage on the probe of the slotted line is measured by means of a ring detector, the output of which is fed into a v.s.w.r. meter calibrated in decibels .
  • Directional Couplers
    OSCILLATOR Fig. 9- Schematic diagram showing a power-measuring setup using the directional coupler as an attenuator. to powers in the milliwatt range, are available for use in the power meter . … power of the oscillator is 500 watts, the directional coupler should have 57 decibels attenuation to cut …
  • Aerodynamic Noise
    Fig. 7.3 Schematic sketch for measurement and data reduction for correlation … by comparison – beat methods – Cathode ray oscilloscope – Stroboscope – Electronic meters (accuracy ± 1 … … sound level meters are commercially available in which the former are very cheap, with several decibel ranges.
  • Experiences with the hearing width speech-audio meter
    We, sehlugen eiae, must it ~ mSglich is Priifanlage before 1, with wcleher to set the prerequisites in either decibel or La meter -distance information Spraehgeh6r under gleiehen that. … of Spraehaudiome ~ rie zngleieh ausgeffihrt is ~ out itself Lau~sprecher of a schematic representation of the …
  • A semi-automatic pen-recorder chart analyser
    A schematic diagram of the electrical connexions is given in Fig. 1, indicating the manner in which … Distribution curve in which abscissa represents percentage of time the field strength equals or exceeds ordinate value . strength in decibels relative to I pV/ metre , the nature of the scale being determined by the performance of the receiver, Fig. 4 shows the …
  • High-Index-Contrast Grating (HCG) and Its Applications in Optoelectronic Devices
    (a) Schematic of a 1-D HCG hollow-core slab waveguide structure consisting of two reflecting HCGs. Calculation of waveguide loss α (in decibels per meter ) at 1.55 µm for a 15-µm core slab HCG-HW as a function of (a) grating period and semi- conductor width and (b) thickness and semiconductor width.
  • Distortion Tests by the Intermodulation Method
    … the alternating-current com- ponent is amplified and measured by means of a copper-oxide-rectifier meter . The full schematic drawing of the frequency-combining unit is shown in Fig. 4 and the analyzer … … per cent to 100 per cent intermodulation; that is, a range of 60 decibels in convenient steps.