A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 82, No. 4, pp. 290–291
Abstract: Three independent characteristic factors affect TV transmission picture quality: linear distortions, nonlinear distortions and noise. A new improved instrument has been developed for the measurement and analysis of video noise in accordance with CCIR Recommendation 421.2. This video noise meter has both true rms and peak-to-peak calibration for objective measurement of random, periodic and impulse noise. Highpass, lowpass and weighting filters permit detailed qualitative and quantitative analysis of the noise, including hum. By interchanging filter modules and resetting an internal switch, one can use the same instrument for both NTSC and PAL Standards. A built-in sag and tilt compensating circuit eliminates pseudonoise components such as are generated by shading of video pickup tubes. The instrument has an accuracy and repeatability of better than 0.5 dB and has a dynamic range of 85 dB, permitting testing of both subassemblies and complete systems.
Publication Date: 1973-04-01
DOI: 10.5594/J08886
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J08886
Author(s): George StoeppelRohde & Schwarz Sales Co. (U.S.A.) Inc., 111 Lexington Ave., Passaic, NJ 07055
Copyright: © 1973 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Measurement of Noise in Video Systems [Active]
2. CCIR Recommendation 421.2, in CCIR-Greenbook ( 1970 ). EXTERNAL
3. Handl J. , “Video noise measurements UPSF, 40 Hz −10 MHz,” News from Rohde and Schwarz , Issue No. 52. EXTERNAL
4. Blankenburg K. H. Schermer J. , “UVM Microvoltmeter,” and “The new UVM wideband microvoltmeter with rms rectification,” News from Rohde and Schwarz , Issue No. 45. EXTERNAL

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George Stoeppel; A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems, Journal of the SMPTE ( Volume: 82, Issue: 4, April 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08886

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George Stoeppel; A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems, Journal of the SMPTE ( Volume: 82, Issue: 4, April 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08886

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<span class="citation">George Stoeppel; <cite>A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems</cite>, Journal of the SMPTE ( Volume: 82, Issue: 4, April 1973); SMPTE, 1973. Available at <a href="https://doi.org/10.5594/J08886" target="_blank" rel="noopener">https://doi.org/10.5594/J08886</a></span>

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George Stoeppel; A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems, Journal of the SMPTE ( Volume: 82, Issue: 4, April 1973); SMPTE, 1973
doi: 10.5594/J08886
url: https://doi.org/10.5594/J08886

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<li>
George Stoeppel; <cite id="bib-10-5594-j08886">A Meter for Measuring Signal-to-Noise Ratio in Television Transmission Systems</cite>, Journal of the SMPTE ( Volume: 82, Issue: 4, April 1973); SMPTE, 1973
<span class="doi">10.5594/J08886</span>
</li>