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FOREWORD
General Information about DRS4D-NXT
• TARGET ANALYZER* function displays targets which is moving and getting close to own ship
in red and other targets in different colors. Speed analyzing range is ±50 kn.
* Requires a GPS sensor. When you change the setting of [Target Analyzer Mode] to [Rain],
rain clutter is displayed.
• AUTO TARGET ACQUIRE function automatically acquires only the targets which are moving
and getting close to own ship within the range of 3 NM by Doppler calculation. Automatic Dop-
pler function will be activated when there is a target which approaches own ship with the speed
of over 3 kn.
* The judged speed of target is dependent on its vector towards own ship.
• RezBoost provides azimuth resolution equivalent to comparable open-array radar.
Note:
Refer to the Operator’s Manual for your Multi Function Display regarding the above new
functions.
• Instant ON function. This radar sensor does not have a magnetron, therefore preheating of the
magnetron is unnecessary.
• Reduced electricity emission means no need to worry about the radiation hazard.
• Magnetron-less radar means no periodic replacement of magnetron or related parts.
• Retrofit from DRS2D, DRS4D or DRS6A is available using the existing cable.
Refer to Chapter 4 for retrofit.
• RACON (RAdar beaCON) and SART (Search And Rescue Transponder) within 0.5 to 1.5 NM
(Range dependant) can be displayed.
* The signal from RACON and SART is shown as a line.
• The maximum display range is 36 NM in the signal range mode.
• ARPA (Automatic Radar Plotting Aid) function applicable range is 12 NM.
* ARPA symbols are erased when switching between signal and dual range modes and vice
versa.
• Dual Range Mode has the following limitations.
- The maximum display range is 12 NM. (36 NM when single display)
- The maximum detection range is reduced a maximum of 20% compared to the single
display.
