COS-1 COSTAS/SQUARING LOOP DEMODULATOR

The Type COS-1 Costas/squaring loop provides a training platform in the design and operation of the classical textbook implementation of a Costas and squaring loop for the demodulation of Bi-phase shift keying (BPSK) signals without a coherent carrier. The Type COS-1 system can be configured as a Costas loop or as a squaring carrier-regenerating loop. Either loop type offers adjustable I and Q-Arm lowpass filter bandwidths from 758Hz ~ 284kHz and is complete with a loop acquisition sweep generator to aid in loop lock. The acquisition sweep generator sweep rate is selectable, and the sweep can be disabled, if desired. The sweep is automatically disabled once acquisition is reached and turns on if loop lock is lost. The Type COS-1 possesses an on-board RMS power detector for accurate signal and noise power level settings. The Type COS-1 has built-in coherent lock detectors for both the Costas and squaring loop. The loop lock threshold is fully adjustable and a loop lock indication is pro