Signal Processor

The signal processor gets bearing information from the

receiver/processor and changes it to digital signals. The

signal processor does these functions:

· Uses time measurement logic and the bearing information to calculate the intruder airplane range and bearing

· Detects the mode C or mode S pulses

· Controls the suppression circuit to send the suppression

pulse when TCAS transmits

· Makes all signals necessary to receive and transmit mode S and ATCRBS interrogations through the receiver/transmitter circuits.