Accession Number:

ADD015091

Title:

Digital Calibration Circuit Employing Composite Sine Wave Signals.

Descriptive Note:

Patent, Filed 30 Aug 90, patented 1 Oct 91,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1991-10-01

Pagination or Media Count:

7.0

Abstract:

A digital calibration circuit provides 13 octave center frequencies substantially in the range of 50 Hz-12.5 kHz 25 tones simultaneously at the output at repeatable levels. The system converts digital data to an analog representation for use in calibrating hydrophones. The calibration circuit is comprised of a clock section, a counting section, a clearing section, a data storage-transfer section, and a signal conditioning section. The information that is provided to the output in analog form is stored in digital form in an EPROM within the data storagetransfer section. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE