Description (AMM 34-55-02)

 

A- The interrogator units are standard 1/2 ATR short assemblies which mount-on the E2-2 shelf in the electrical/electronics equipment center (Fig. 1).            

 

B- DME-1 interrogator receives 115v ac, 400 Hz, power thru DME-1 circuit breaker located on the P18 circuit breaker panel.  DME-2 interrogator receives its power thru DME-2 circuit breaker located on the P6 circuit breaker panel.            

 

C- Interrogator units provide the capability to transmit interrogation pulse pairs to a ground station, receive and process the returned reply pulses, which provide the slant range distance to the RDDMI's, the EHSI and other airplane systems.           

 

D- The slant range capability of the interrogator is from 0 to 389.99 nautical miles.

 

The DME (distance measuring equipment) system automatically measures the distance (in nautical miles) between the airplane and a selected ground station. The system measures the airplane-to-station slat-range distance and the information is displayed on a digital readout indicator as miles-to-go. The system is designed to indicate a range of approximately 390 nautical miles. 

 

The DME systems automatilly measure the distance between the airplane and a selected ground station. DME-1 and DME-2 systems measure the airplane-to-station slant-range distance and displays miles-to-go on the captain;s and first officer's RDDMIs. 

 

The DME systems automatilly measure the distance between the airplane and a selected ground station. DME-1 and DME-2 systems measure the airplane-to-station slant-range distance and displays miles-to-go on the captain;s and first officer's RDDMIs. 

 

An audio signal from the DME interrogator is applied to the flight interphone system.