MRE-280
Descriptions
Operation Manual
93144222-01
5
4. Operation
4.1 Setting the ATA parameters
Before using the ATA function, the following ATA parameters must be set.
CPA: Closest point of approach. Enter the minimum distance of other ship’s approach. Unit in NM.
Default: 3.0 NM.
TCPA: Time to CPA. Enter the minimum time required to reach the CPA. Unit in minutes. Default: 3
MIN.
VECT SET: Vector Time. Enter the length of a vector in minutes. The leading end of the vector is the
predicted point of approach. Units in minutes. Default: 6 MIN.
VECT MODE: Vector Mode. This selects vector’s motion mode, True or Relative. Defaulted to TRUE.
ATA: Sets ATA ON or OFF. Default: ON.
Use the following procedure to set up the ATA PRESET functions.
(1) Activate the ATA function by the following menu operations; SET UP => CUSTOM => ATA PRESET
=> ATA ON.
(2) Use the Up or Down cursor key to select the item. Use the right or left arrow key to move the cursor
to the right or the left.
CAUTION:
Unless the ATA board is installed properly, the ATA PRESET items are not displayed on the
above SET UP/CUSTOM menu.
4.2 Changing the acquisition mode
To change the acquisition mode from full-auto to half-auto/half-manual or to full manual mode, use the
following procedure:
(1) In the radar display unit find the status switch S1 and change the settings referring to Table 5.
(2) Set S1 according to your desired acquisition mode.
CPA SET
3.0 NM
TCPA SET
3 MIN
VECT SET
6 MIN
VECT MODE
REL TRUE
ATA
ON OFF
Figure 3 ATA PRESET sub menu
