A portable transponder/DME ramp test set, the rugged ATC-600A is the ideal solution for both ramp or bench use. Providing simulation of the ground station or airborne environment, the ATC-600A meets the latest ARINC specifications and FAA regulations concerning transponder receiver sensitivity and SLS tests. Transponder tests allow quick determination of transmitter power, frequency, percent reply, pilot’s code and encoded altitude. ForDMEtesting, the unit includes accurate range and velocity simulation, power and frequency and PRF measurements.