G - Physics – 01 – R
Patent
G - Physics
01
R
324/3
G01R 31/28 (2006.01) G01R 31/00 (2006.01) G01R 35/00 (2006.01) G11B 5/035 (2006.01)
Patent
CA 1187937
APPLICATION OF ROBERT N. SPURR AUTOMATIC CALIBRATION SYSTEM FOR SIGNAL AMPLIFIER CIRCUITS ABSTRACT An automatic calibration system for signal amplifier circuits uses a single complex power signal to replace the Formerly used four separate sinewave frequencies and a square wave signal. In the illustrated embodiment of the invention, the power signal is recorded on a magnetic tape and is played back through reproduce equalizer circuits which apply the reproduced signal to a tracking frequency converter to produce an amplitude measurement of each of the preselected frequency components forming the complex power signal. The amplitude measurements are referenced to the power signal's actual harmonic content to enable an adjustment of the equalizer circuits to produce a minimum error in the playback signal. A bandpass phase response measurement is also performed on the reproduced signal by comparing the phase difference between the reproduced signal and a synthesized power signal after the amplitude compensation produced by the amplitude measurements.
420390
Honeywell Inc.
Smart & Biggar
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