Distance Measuring Equipment (DME) Test Sets
Distance measuring equipment (DME) is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between 960 and 1215 megahertz (MHz).

Viavi ATC-5000NG NextGen Transponder/ DME Test Set
Approved Viavi (Aeroflex) UK Technical Partner
The Viavi ATC-5000NG is an RF signal generator/receiver for testing Mode A, C and S transponders, designed with modern software defined radio technology and is the replacement product for the commercial functionality of the SDX-2000, ATC-1400A and S-1403DL.