DocumentCode
1447379
Title
A novel method of measuring the deviation of video FM modulators
Author
Uyttendaele, A.G.
Volume
34
Issue
3
fYear
1988
fDate
9/1/1988 12:00:00 AM
Firstpage
398
Lastpage
406
Abstract
The author presents a simple yet accurate method of verifying, and if necessary adjusting, the frequency deviation of the visual carrier and of the aural subcarriers without having to resort to the indirect method of carrier Bessel null. The method proposed is a direct method in that it measures the actual deviation of the FM carrier when this carrier is modulated with video test signals. This assures optimum use of the available transponder bandwidth for single or dual video operation. Tables and charts are provided for determining the levels of test tones for any frequency deviation of the main carrier or aural subcarrier
Keywords
frequency measurement; frequency modulation; modulators; television equipment; video signals; FM carrier; aural subcarriers; charts; direct method; frequency deviation measurement; test tones; transponder bandwidth; video FM modulators; video test signals; visual carrier; Band pass filters; Bandwidth; Circuit testing; Cities and towns; Colored noise; Downlink; Frequency modulation; Low-frequency noise; Transponders; Voltage-controlled oscillators;
fLanguage
English
Journal_Title
Broadcasting, IEEE Transactions on
Publisher
ieee
ISSN
0018-9316
Type
jour
DOI
10.1109/11.7312
Filename
7312
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