3-2 
3 
 
z  Wait for about 2 seconds before turning on the 
power again. 
 
z  Immediately after the radar is installed, at start of the 
system after it has not been used for a long time, or 
after the magnetron is replaced, preheat the 
equipment in the standby state for 20 to 30 minutes 
before setting it into the transmit state. 
 
z  If the preheating time is short, the magnetron 
causes sparks, resulting in its unstable oscillation. 
Start transmission on a short-pulse range and 
change the range to the longer pulse ranges in turn.   
If the transmission is unstable in the meantime, 
immediately place the system back into the standby 
state and maintain it in the standby state for 5 to 10 
minutes before restarting the operation. 
Repeat these steps until the operation are stabilized. 
CAUTION 
 
3.1.1    Power ON and Start the System 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Attention 
A malfunction may occur if the power in the 
ship is instantaneously interrupted during 
operation of the radar.    In this case, the power 
should be turned on again.