• User selectable locking mode(Quad+/Quad- 1 Null/Peak)• Two operation modes: calibration mode and locking mode• Calibration off mode for quick system setup in locking mode• Small size (2.53″ x 2.57″ x 0.65″)• Access for external photo-detector• GUI computer interface• Pulse mode for more accuarte null locking• Fine tuning pilot tone parameters through the GUI• Pulse mode for Null locking in dense pulse applications• GUI is provided with multi-unit control capabilities• RS232 interface provided• User may stop pilot tone, enter manual mode
