ARPA Settings

[Quitsa]

The manual is a little unclear as to what happens with a DRS25A-NXT if you turn off "Auto Acquire by Doppler." It says that targets can be identified manually to track but it also says that targets can be acquired automatically with a guard zone. The only difference seems to be the ability to track more targets if "auto acquire" is active.

Does this mean that I can turn off the auto acquire and set a guard zone and the ARPA will be just as effective at identifying and tracking all targets within the guard zone as it would be if "auto acquire" is turned on?

I am wondering if this is a possible solution to my spurious target issue since many of them appear close to the boat. I could designate a guard zone that is a short distance away and turn off auto acquire.

 

[Johnny Electron]

Yes, you can acquire more targets. Acquire by doppler is going to automatically track targets that are moving regardless where they are in the 360 degrees. You are correct that you can have better control of the area using guard zone as you can control the direction and how large the area is.