JRC JMA-993-SA Instruction Manual page 194

o o o o a a a a a o o a a a a o a a a a a o a a a f
a o o a o o o a o a o a o
5.6
DATA DISPLAY
Types of Data Display
Attention
o When a target or the own ship changes course or when a target is acquired, the
vector may not reach a given level of accuracy until three minutes or more has
passed after such a course change or target acquisition.
Even if three minutes or more have passed, the vector may include an error
depending upon the tracking conditions.
Target Data
Target identifi cation (l D)
lD number of the target
True bearing: T BRG
0.1 degree units
Range: RNG 0.01 NM units
I rue course: l" uuE
0.1 degree units
True speed: .T SPD
0.1 knot units
Closest point of approach (CPA)
0.1 NM units
Time to CPA(TCPA)
0.1 minute uni8s
Bow crossing range (BCR)
0.1 NM units
Bow crossing time (BCT) 0.1 minute units
Targets that have their numeric data displayed are indicaled with the symbol."a" to
distinguish them from other largets.
Note
lf a target's data is displayed, bui without the symbol "n", such a target exists outside
the currently shown radar display.
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