The ATC-600A is a portable ramp test set designed to simulate the ground station or airborne environment needed to test Modes A and C transponders. The ATC-600A meets latest ARINC specifications and FAA regulations concerning transponder receiver sensitivity, SLS, transmitter power, frequency, percent reply, pilot’s code and encoded altitude tests. _x000D_ _x000D_ For DME testing, the ATC-600A includes accurate range and velocity simulation, power and frequency and PRF measurements._x000D_ _x000D_ Measures transponder frequency and checks for correct DME channel_x000D_ _x000D_ Digital readout of XPDR code and altitude_x000D_ _x000D_ Binary pulse information for code and altitude_x000D_ _x000D_ Front panel connector provides direct check of altitude encoders_x000D_ _x000D_ Checks position of XPDR second framing pulse relative to F1_x000D_ _x000D_ Precision DME range and velocity signals, both X and Y channel_x000D_ _x000D_ Internal battery and battery charge_x000D_ _x000D_ _x000D_ Contact us today for quality new and used avionics equipment. If you are upgrading to newer technology we can help. We take trade ins and buy decommissioned gear.