ņ15 
[II] Check the Receiver System 
 
When the performance of receive unit is degraded, the attenuation will be strong. 
 
  Procedure    1  Press [4] key while Test Menu is open. 
 
MON Display menu opens. 
 
2  Turn [VRM] control to slide the VRM to 
the end of the performance monitor 
pattern. 
 
Attenuation in the receiver system is displayed in 
Attenuation Value of Receiver System. 
 
 
 
 
 
3  Check the attenuation value. 
 
* Receiver System   
    MON Pattern Range    (Initial value : 18.0NM) 
    Attenuation Value    Normal operating range : -2.9dB to +3.5dB 
      Performance degradation range : -15.0dB to -3.0dB 
 
Note:  If Receiver System Attenuation Value display is under -3 dB or Transmitter System Attenuation Value 
display is under -7 dB with the the performance monitor test, radar should be checked by service 
engineer.    This means that the TX/RX unit may be faulty.    Consult with the near-by dealer or our 
sales department. 
 
 
 Exit   1  Press [RADAR MENU] key. 
 
The menu will be closed. 
 
 
Performance Monitor Pattern   
(When the performance of receiver unit is 
degraded, the pattern distance will be 
shorter.) 
Adjust the VRM to the farthest point of the 
erformance monitor pattern.