Time-Amplitude-Frequency (T-A-F) - A special electronic unit for measuring the TVG function of research echo sounders
Research report
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http://hdl.handle.net/11250/114504Utgivelsesdato
1985Metadata
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High precision in hydroacoustic instruments for fisheries research demands high precision and
reliability in the test instruments. To simplify the test measurements, a special test unit has been
developed. The operating principles are described, and a technical description is given for this
special-purpose signal generator. Application of the unit is described in detail, and an easy way to
verify the accuracy of signal amplitude and frequency is recommended. Finally a computational
example to derive correction factors is given.
Utgiver
[Fiskeridirektoratets havforskningsinstitutt]Serie
Fiskeridirektoratets skrifter, Serie Havundersøkelservol 17 no 16